These will be the subject of another article. Aluminum melts around 1500 F. The hottest a two stroke cylinder head should get is 450 degrees continuous running, 500 for short periods. There is just enough room between the fins for the sensor to fit. by tristessa Sun Apr 03, 2011 10:09 am, Post easier to remove the faulty gauge if HST is not used to cover both wires. Fouled or malfunctioning spark plug or ignition wire:Elevated EGT on affected cylinder only (usually by about 50F or so). Please do NOT rely on PHOTOS while shopping as many of our products have selectable product options that may change the nature of the product being ordered compared to the representative photo. Mount the gauges Use nylon zip ties to mount the gauges on the left side bar. Skip to content. mechanical problems with the engine. some are even a bit over 500F. 275C. The wire from the CHT must not touch the cooling duct so be sure to make the slot big enough. Another problem with a cooler Commonly used on air-cooled engines, the head temperature gauge displays the work that the engine is performing more quickly than an oil or water temperature gauge. around 400F, and we can't say this is wrong. EGT is a true example of what is actually going on in the combustion of the cylinder. 1996-2023, Amazon.com, Inc. or its affiliates, Auto Meter 4336 Ultra-Lite Electric Cylinder Head Temperature Gauge, FARIA BEEDE "12819 Euro Cylinder Head Temperature Gauge with Sender (60-220F) - 2"", Black, Auto Meter 3336 Sport-Comp Electric Cylinder Head Temperature Gauge, Faria 13009 Coral Cylinder Head Temperature Gauge with Sender (60-220F) - 2", Black, Trail Tech 742-ET3 TTO Temperature Digital Gauge 14mm CHT Sensor, AUTO METER 2259 Electric Cylinder Head Temperature Sender, Universal Cylinder Head Temperature CHT Sensors K Type Thermocouple with 18mm Inner Diameter Washer & 10 feet Cable, CHT Sensor Cylinder Head Temperature Gauge Probe Under Spark Plug 14mm Washer Thermocouple, KOSO BA003245 Mini 3 Cylinder Head Temperature Meter, Walker Products 211-1119 Engine Cylinder Head Temperature Sensor, Universal Cylinder Head Temperature CHT Sensors K Type Thermocouple with 10mm Inner Diameter Washer & 10 feet Cable, Faria 13806 Chesapeake Cyl Head Temperature Gauge with Sender - White SS, 2", Standard Motors TS605 Cylinder Head Temperature Sensor, Car Cylinder Head Temperature Sensors K Type Thermocouple with 14mm id Washer Angled Bend, Combo Gauges for Diesel Trucks & Performance Cars, Quality Meters n Instruments at a Great Value, Runleader Digital Inductive Hour Meter for Mower, Automotive Replacement Water Temperature Gauges, Automotive Performance Water Temperature Gauges. Gauge importance (to US), in order, Cylinder Head Temperature, Oil Temperature, Voltmeter (charging system problems or broken fan belt), Oil Pressure. I have yet to see any Top 80 get even close to running the max Leave the old CHT in and add the JPI. Using a Dremel tool or a round file, make a Engine wont start, screeches then shuts off. Do not drill holes in the side bar in order to mount the gauges because it could In the case of airplanes which do not have cowl flaps, an indicator shall be provided if compliance with the provisions of 3.581 is For aircraft and motorcycles, the vehicle's speed alone moves enough cool air over the fins to keep the engine cool. You can also use relative EGT to set the mixture to a specific air-fuel ratio that is stoichiometric (peak EGT), richer than stoichiometric (ROP), or leaner than stoichiometric (LOP). 650 air-cooled, dual carb, dual ignition, rebuilt (like new! got to get under 300F before you shut down. must have the sensor at the 8 Aviasport. (assuming it was installed under the #3 plug, so you can compare it to others with the same install location). 2023 Caerbont Automotive Instruments Ltd, Classic SMITHS Speedometers, Tachometers and other gauges, New SMITHS International Dual Needle Boost Gauge. In this case, the overheating was caused by fuel starvation from a clogged The 250 Fi (same engine as my XT250) has an Engine Temp. As things heat up even more, the piston will seize and the engine will stop. b.) Do not remove the metal gasket on the spark plug CHT (cylinder head temperature) gauge w/probe, 2", new, $90 EGT (exhaust gas temperature) . Note: the stock wire on the CHT is short so As long as CHT is does not exceed the desired target, whatever mixture you have set is fine. The head temperature gauge, which is commonly found on air-cooled engines, displays the work that the engine is doing more quickly than an oil or water temperature gauge. Manufacturer; Certification; Size; Alcor. This gauge kit comes WITH the CHTs above 400F should be considered abusive, and grounds for doing something right now to bring them down. Mike Busch's books, articles, webinars, and other resources from Savvy Aviation, Inc. Attempt to unclog by going to full-rich mixture and high boost; otherwise, land as soon as practicable. Consider confirming by doing an in-flight mag check, but be careful if you turn off a mag and the engine quits, pull the mixture control before turning the mag back on to avoid possible afterfire-damage to the exhaust system. If they are mounted on the upper sticks, for example, you will have to turn your head quite a bit to read them. by kritip Mon Feb 16, 2009 3:57 pm, Post Please only continue if you are prepared to be PATIENT. Always have a small loop between the Motorcycle 4-in-1 Multifunction Gauge Mini 4 Meter (RPM Tachometer+Cylinder Head Temp+Voltmeter+Clock) 4in1 Multi-Functional Gauge Digital Multimeter Engine Temperature Meter (14mm) 5.0 (1) $2899 - $3099 Save 6% with coupon Universal Cylinder Head Temperature CHT Sensors K Type Thermocouple with 10mm Inner Diameter Washer & 10 feet Cable No reviews Doing the temp sensor mod should slightly help. Sounds like it's running lean. enough to quickly overheat an engine. . not line up with the cooling fins on the cylinder head. CHT Kit Specification: Gauge Dimensions:79mm x 43mm x 25mm. Replace the old CHT with an STC'd item and write it up on a 337. I would also monitor all 4 cylinders. SPECIFICATION : MYEM: CYLINDERS: 4: BORE x STROKE (mm) 86 x 90: DISPLACEMENT L (ci) ) 2.09 (128) GROSS POWER hp (kW) 74 (55.4) RATED SPEED : 2600: The CHT-100 is an advanced Cylinder Head Temperature Sensor for the Corvair Spyder and Corsa models. Please check the boxes for the options that you would like to add. Swift Gauge Dual 2 Inch Round CHT/Tachometer Gauge 100-7000F/-8000 Rpm. On a air cooled engine, all you can do it postpone blown head gaskets. on the Aircooled VW Engine. CHT Gauges; CHT Gauges. A reamer works much better than a drill bit. The wasted energy is measured and displayed on a triad of cockpit gauges: oil tempera-ture, cylinder head temperature, and exhaust gas temperature. The CHT gauge kits consist of a sensor and the gauge itself. 3. You should establish a target CHT that represents the maximum stress you want to place on your engine - 380F works well for most Bonanzas and Barons under typical conditions - and then adjust your power settings, mixture, and (if applicable) cowl flaps to ensure that all cylinders are operating at or below that target. the thermocouple is mounted under a spark plug. The Evans VP-1 and VP-2 Volksplane plans (which assume a hand-propped engine) call for just a tachometer, oil pressure, and oil temperature gauges. We are a "lean-staffed" small business and email care is how we are able to best take care of your aircooled parts needs! We sincerely appreciate your patience while we are doing these site upgrades. You do NOT want debris falling into the cylinder. $58.35 + $14.59 shipping VINTAGE PORSCHE VW BEETLE CAR TEMPERATURE GAUGE, BEETLE. First of all I have mostly built water cooled race engines and a few air cooled engines. Limiting EGTs accomplishes nothing useful. If LOP mixture, reduced EGT and CHT on affected cylinder, and possible engine roughness. Description. The new Cylinder Head Temperature Gauge is the latest new instrument developed by the Caerbont Automotive Instruments' design team. Richer mixtures also cause EGT to decrease because excess (unoxidized) fuel absorbs heat energy when it vaporizes. Either richening or leaning the mixture from that point decreases the burn rate, causes ppto occur later, and consequently reduces CHT. Air-cooled engines rely on natural air to keep the engine cool. Recently installed some CHT gauges on some fan cooled sleds. If you can JUST hold it without it burning your fingers, the engine temperature is OK. You must log in or register to reply here. failure of the side bar while flying could be catastrophic. Finally, a burned exhaust valve can increase EGT if it allows some of the ultra-hot gas during peak-temperature phase of the power stroke to leak past the valve and impinge on the EGT sensor probe located a few inches beyond the cylinders exhaust port. Completely clogged fuel injector:Engine rough, EGT cold, CHT dropping. Its obvious that CHT increases when power is increased, and that it also increases when cooling airflow is decreased. 4TN86CHT-MYEM Water Cooled Diesel Engine << Back to all water cooled engines. The red sensor wire can be secured with I am still astounded that this vitally important gauge is not standard issue for all paramotors. We feel critical temperatures are 425F when the thermocouple is mounted under a 14mm spark plug. The sympathetic arbitrator sided with four bikers claiming their Harley-Davidson motorcycles were defective in design. Cylinder Head Temperature (CHT) Limits According to the engine manual, the maximum allowable cylinder head temperature (red line limit) is 500 degrees F. Lycoming states flatly that the maximum redline cylinder head temperature limit must never be exceeded. Northeast - Middletown, PA The sensor wires are very durable but they cannot be stretched. Running the engine too hot will destroy the lubricating properties of the oil. petrol does things like that even at 0! The CHT wire is delicate and We ONLY charge for items that are available to be shipped in a timely or reasonably reliable timeframe. "Most factory installed cylinder head temperature gauges utilize a bayonet or screw-in resistive type probe that occupies one of the bayonet sockets. [Log in to Reply] [No Email] Glen in TN 05-20-2003 17:14:26 Report to Moderator Re: Temp Gauge for Air cooled engine? fuel inlet filter and a worn out fuel pump. Note that the lubricating oil on the surface of the piston has burned. Power Products. Replace the old CHT with a non-STC'd replacement and get it field approved on a 337. poadeleted20, Oct 7, 2009 #8 They readily available, inexpensive and pretty easy to install. I just tested a high rpm piston port intake 55cc Grubee engine and I redlined it for a mile at 9100 rpm and it only got up to 425 degrees farenheit. Retarding the ignition timing so that the spark plug fires later causes ppto occur later and decreases CHT. Youre overthinking it, the bike is most likely fine. Other engines are similar. Orders are processed in the order that they are received and order fulfillment time varies. problem being, it's a pretty well closed ducted fan setup on a pretty compact engine. Have you ever checked n adjusted the valves, check the compression also . the trick is the cool down. My question: Does anyone know the best / optimum CHT to operate a Lycoming IO-360A1B6 Angle Valve 200HP + with 10:5:1 compression. The completed installation should look like this on a Top 80. much more than a CHT and is complicated to install on a paramotor. Just happened to be the right size. We rely heavily on email as the most efficient and accurate way to serve our customers. If you drive an air cooled or in fact any vehicle this CHT gauge will tell you a lot about the state of tune of your engine. by Morgoon Wed Apr 06, 2011 3:03 am, Post ), 4.5mm (3/16") wide black nylon zip ties Clear 4 Digit RED Led Readout. thats about 150C. temperature when correctly tuned. If your bike doesn't come with a temperature gauge, you can buy an oil temperature gauge or cylinder head temperature gauge. Remove the spark plug and cover the hole in the cylinder with a piece of masking tape. This type of gauge is commonly preferred to oil or water temperature gauges by motoring enthusiasts as the performance data is registered quicker. Of course, if pilots have lots of money and like ignorance, who would care? Generally the higher the load, the higher the plug seat temperature, even with more cooling air. We feel critical temperatures are 425F when As the engine works at high speed or uphill, head temperature will increase quickly. FAA. This installation does not have a full length piece of HST to cover the gauge wires. Hopefully, they will get this fixed soon. With simple installation and its slick clean look, it makes it be another must have Ural Accessory. *** Supply-chain disruptions have hampered our ability to acquire/restock items reliably, and a lack of backorder ETA information is the frustrating "new normal" for our hobby. nah, VW set up the engines so at freeway cruizing you are at 3500-4000 rpms which is MAX cooling of the fan. Typical installation on the left side bar of an Air Conception. Aircraft Design / Aerodynamics / New Technology, Why battery-powered aircraft will never have significant range, Spar inspection results raise FAA concern. Falcon CHT 2 Inch Round Gauge. wheres the evidence to say that that bicycle caught on fire due to excess head temperature? This type of gauge is commonly preferred to oil or water temperature gauges bymotoringenthusiasts as the performance data is registered quicker. Fast Response time: 500 msec. careful because the bit can snag the plastic and split it. As a result, we have had to change our BACKORDER FULFILLMENT PROCEDURES. Typically, there is a sensor mounted in the exhaust of each cylinder of the engine which allows us to watch each cylinder temperature individually so we can compensate jetting to balance out heat conditions to produce . Quality Parts and Tech Info for Classic Aircooled Volkswagen Enthusiasts. Itinerant Air-Cooled. UMA. I would hesitate in saying that an air cooled engine runs hotter than a water pumper, and in good tune with all the cooling system . We will not drive without one! Having anything It's normal. The gauge measures in Celsius up to 1300c or 2372 Fahrenheit Easy installation. 80 mm. I gave this a good deal of thought with my 82 air-cooled, which I really cooked for fun one day in August on the way to Vegas. Never checked compression though. Matt Cramer -1966 Dodge Dart slant six running on MS3X. You should establish a target CHT that represents the maximum stress you want to place on your engine 380F works well for most Bonanzas and Barons under typical conditions and then adjust your power settings, mixture, and (if applicable) cowl flaps to ensure that all cylinders are operating at or below that target. by Matt Cramer Mon Feb 16, 2009 10:43 am, Post necessary. Exhaust temperatures would be less than 600F. In this (You can see this EGT rise every time you do a pre-flight mag check.). by Robert Hodge Mon Feb 16, 2009 12:46 pm, Post The TIT limit is usually either 1650F or 1750F, depending on the model of turbocharger in-stalled. The additional fuel compensates for the additional air. VDO 600F Cylinder Head Temperature (CHT) Gauge, Cockpit, Black Face, 2 1/16", V310901 is used to monitor the critical Cylinder Head Temperature on the Aircooled VW Engine. 24" extension lead #V300-24(The extension MUST be Always do a thorough test of the fuel delivery system before assuming there are ignition or the trick is the cool down got to get under 300F before you shut down. Tech and Community Help For Air-Cooled VWs, Post Additionally, paramotor engines are designed mechanically to run at a specified temperature Some air-cooled engines may also have ducts around the engine to keep air flowing . However, an engine running at BLUE LED CHT, 3M SENSOR $58.35 + $14.59 shipping Have one to sell? Important: The absolute value of EGT is not important. IMPORTANT GAUGE YOU CAN HAVE ON YOUR VW! 16C21. used as a REFERENCE, get used to them, and if you see it "too high" one If pilots want to spend the money and time to install an EGT, do it but I do not think it is I'd consider but I prefer analog. The purpose of the TIT limit is to protect the fast-spinning turbine wheel from blade stretch. Currently seeing 311F as a maximum. 3. too lean an air/fuel ratio. This set up is intended to help the rider maintain engine temperature in check while pushing it to the extremes. The "missing gauge" on an air-cooled vehicle. Mitchell Cylinder Head Temp Gauge For Rotax. CHT measures heat energy wasted during the power stroke, when the cylinder is under maximum stress from high internal pressures and temperatures. Temperature Sensor: Cylinder Head 14mm CHT Sensor, 550mm Long. sensor c.) Tachometer sensor wire location The RED tachometer sensor wire may be shortened as needed and loosely wound around the secondary (spark plug) wire 3 or 4 turns. Consequently, peak EGT can be used to identify a stoichiometric mixture, and decreases in EGT from peak can be used to establish mixtures richer or leaner than stoichiometric (ROP and LOP). . CoC. Sender installs over the engine spark plug, typically on cylinder #3. It must be modified while it is installed on the engine or the cut will I am going to have EGT gauges. 12v connection. The location shown here is the best and will result in the least wear and tear on the sensor wires. Sensor id Ring Size 14mm. Drill & tap a safe spot on the cylinder head, or carefully epoxy the sensor to the head, making sure you have good contact between the sensor and the cylinder. by Bleyseng Thu May 19, 2011 6:32 am, Post By contrast, high EGTs do not indicate that the engine is under excessive stress. cut in the duct by the spark plug 3/8" long and a width of the space between the fins, as shown in the photo. They must be fished from both directions with a thin line. or broken fan belt), Oil Pressure. PRODUCT IMAGES are representative only. For this reason, engine exhaust temperature plug and the sensor. You can find out more about the cookies used by clicking this link. you will know if your engine is running at peak output and when maintenance is required. Vittorazi, for example, recommends that the 180 Moster reach 120C before flight. This is especially an issue when using AVGAS. Midwest - West Chicago, IL Some other guys get nervous around 400F, and we can't say this is wrong. Currently our response time to emails is slow (we are severely short-staffed). on the throttle increases the risk of catching the throttle on the risers, glider lines, or straps. A water cooled engine usually operates with a coolant temperature of 180-220. SA9 1SH, t: 01639 732200 like ignorance, who would care? point. by airkooledchris Mon Apr 11, 2011 12:15 pm, Post A Cylinder Head Temperature gauge is the missing gauge on any air-cooled vehicle. Some engines have a 2-3mm thick copper or aluminum spacer washer on the spark plug in addition to the stock All information should be verified prior to use. Please only contact us by PHONE and leave a voicemail if you have been unable to reach us via email for some reason, OR if your situation (or tech question) is impossible to convey in writing. even more, the piston will expand enough that its diameter will begin to exceed the inside diameter of the cylinder. JavaScript is disabled. make holes in the wings of the tachometer so it could be mounted properly. This gauge kit comes WITH the wiring harness, and the sending unit, you do not have to purchase these separately unless you want to have spares! Air going through that hose opening will deprive cylinder #5 of cooling air. of how your engine operates in various conditions, which is important! See, hello all, i'm still working on megasquirting a 1965 vespa. as you can imagine lal the sensors are add-ons and i'm very much starting from scratch. As the bike moves, air passes across the cylinder fins and reduces the engine's heat to keep it cool. Do I need to run CHT guages? With the engine completely warmed up, grab the dip stick and pull it out. to do and could harm the engine. The amsoil oil is for small engines and I believe it is sae 30. Slightly reduced CHT on all cylinders. Be very careful not to twist the sensor/wire assembly when tightening the spark plug. You may never need Our site uses advanced code and encryption that is not supported by Microsoft's Internet Explorer Browser. (see graph below) The picture below is of a motorized bicycle that caught on fire after the owner parked it after a ride and some gasoline dripped onto the cylinder head. (use commercial grade which is available in the electrical dept. This is THE MOST IMPORTANT GAUGE YOU CAN HAVE ON YOUR VW! how to change font in davinci resolve; kultura ng tarlac; apartments in southaven, ms under $800 The TTO gauges and the CHT extension are available from Miniplane-USA. If needed, pilots may contact us to order these washers ($1 + free shipping). GA aircraft that are carbureted The advantage of an EGT is that it detects changes in We are still processing and shipping orders from our warehouse as normal even while our site is offline. VDO Cylinder Head Temperature (CHT) 14mm Sending Unit, V323701 is used to monitor the critical Cylinder Head Temperature on the Aircooled VW Engine. From the pilot's perspective, this involves learning the best practices for power control, leaning procedures, cooling, and other operational considerations. VDO 250-1650F Pyrometer Temperature (EGT - Exhaust Gas Temperature) Gauge, Cockpit, Black Face, 2 1/16", V310953. . . Road. at hardware stores), 3/8" or 1/2" heat shrinkable tubing (HST), #14 drill (11/64" or 4.5mm) or reamer to widen the mounting holes in the gauges. Cylinder Head Temp Sensors. JavaScript is disabled. In addition, the piston, The CHT gauge on a TCMengine usually has a green arc from 200F to 460F, with a red-line at 460F. A Cylinder Head Temperature Gauge (CHT) measures the temperature of an engine's cylinder heads. weaken important structural materials. I didnt turn that fan on. Once again, red . Items that are not expected to be restocked within 2 weeks WILL BE AUTOMATICALLY CANCELLED. While tightening the spark plug, hold the sensor so it does not touch any parts of the air duct (if there is one) or the cylinder at any point. When adjusting power settings and mixture, CHT is the most important reference measurement, because CHT is the best proxy we have in the cockpit for internal cylinder pressure (ICP) which represents stress on the engine. A Grubee engine with a standard CDI should have a cold #7 as well as with a Jaguar CDI. Comes with box and instructions. CAR CYLINDER HEAD TEMPERATURE GAUGE KIT, CHT. I'm putting a sender on each of #1 and #3. . Since even a badly burned valve permits only a tiny amount of gas leakage, the EGT increase caused by a burned exhaust valve is usually quite small (typically a 20F to 60F rise of a 1400F to 1500F EGT) and quite easy to miss unless you really pay attention. We are able to serve the many aircooled VW fans who rely on our services most effectively via Online Ordering and via Email. Last summer mine got so hot, that I couldn't kill the engine with the kill switch nor removing the spark plug cable. or 9 o'clock position. unfortunately they only read up to 125deg, but somethign similar would be ideal Engine Guard - Product Overview - Engine Guard basically this.. "cylinder head temp gauge" VDO 12v DIGITAL CYLINDER HEAD TEMP GAUGE KIT 4WD TRUCK | eBay Ambient air about 70-75 deg.F Front to rear variation is only about 5 deg. Some other guys get nervous A Cylinder Head Temperature gauge is the missing gauge on any air-cooled vehicle. We serve the VW parts and VW Tech needs of owners of aircooled Type 1 VW Beetle, Karmann Ghia, Type 181 Thing, Type 2 Volkswagen Bus, Type 3 VW Squareback / Fastback / Squareback, and Type 411 & 412 Volkswagens. less than 70C will have problems with fuel vaporization which is necessary for efficient combustion. Swansea The art of troubleshooting with an engine monitor is a subject thats so rich and fascinating that Im in the process of writing a book about it. some are even a bit over 500F.. 275C. Always use a torque wrench to tighten the spark plug to specifications. $79.25. Some aftermarket temperature sensors and overheat warning systems have become available over the years. I am still astounded that this vitally important gauge is not standard issue for all paramotors. EORI Number GB558214927000. This is a piston from an overheated Top 80 engine. The oil used in this engine was probably some inexpensive brand because the oil burned so easily Filters and sorting. Some have used their own NTC (negative temperature constant) resistor epoxied to the head as well. by airkooledchris Mon Apr 11, 2011 5:08 pm, Post Copyright 2021, Savvy Aviation, Inc. All rights reserved. Customer Service: 800-861-3192 If you wind the pickup A drill press and reamer was used to . Therefore, attempting to limit EGTs in an attempt to be kind to the engine is simply wrongheaded. NOTE:In extreme cases of fuel starvation, a CHT may not be helpful because there is so little fuel reaching the engine that it will not even run. The use of these terms in no way denotes or infers a direct or indirect connection between Aircooled.Net, Inc. and Volkswagen or any of its subsidiaries. Engines cooled by air rather than water require a steady and constant flow of air and accurate temperature monitoring is critical as overheating can cause engine failure. The holes in the gauges are slightly smaller than the width of the ties. by pinzgauer Thu Feb 19, 2009 9:46 am, Post The cylinder head temperature is just as relevant for air-cooled VW or Porsche engines as the oil temperature, especially with modified engines you should keep an eye on it. These are. East - Peachtree City, GA by steve74baywin Fri May 27, 2011 6:45 am, Giving y'all first crack at this before I put an ad on. At this point, irreversible damage occurs to both the piston and the cylinder. My favorite CHT gauge is made by Dakota Digital. If the temperature increases very quickly, the crown of the piston can melt at the center and form a hole. Anything that causes ppto occur earlier (i.e., closer to TDC) in-creases CHT, and anything that causes ppto occur later (further from TDC) decreases CHT. Limiting CHTs is essential to ensure cylinder longevity. My column last month talked about the fact that our piston aircraft engines convert only about one-third of the energy contained in avgas into useful energy to the propeller. I never recommend more than 150psi for these engine, but some after market cylinder heads can easily give 180psi. Discussion in 'Thumpers' started by Modron, Apr 11, 2016. separately unless you want to have spares! It is also good to have an hour meter/tachometer so manufactured outside the U.S. and the temperatures specified are always given in centigrade. Cylinder Head Temperature GaugeGaugeNew Product, Categories: (If burned valve fails completely, EGT of affected cylinder will go cold and engine will run rough. We appreciate your continued support and understanding. Note: the 10mm sensor is easily deformed by the small diameter spark plug. air cooled aircraft engines go up to a minimum of something in the 425F range which is about 218C. You can email to cancel un-shipped/un-paid items at any time as long as they are not direct-shipped, special order or made/machined-to-order. also easily visible on the side bar. You obviously need an engine monitor to measure the CHT of all six cylinders (or twelve if you fly a twin).