Installed an EGT Gauge today..., Only took 10 minutes Options

[McMark]

I've had this Exhaust Gas Temp gauge sitting around for a couple months and while I had the car up on ramps getting a new fuel filter (and it needed it!) I decided to pop this guy in place.

I got the parts from Aircraft Spruce, this guage, this clamp-on probe, and this 15' extension cable. All told, I spend around $100. This gauge has the benefit of being semi-original looking, ambient temperature compensated, and matches my Micro1000 CHT gauge.

All I did to install it was drill a small hole in the exhaust tube, and insert the probe, tightened everything down, attached the cables and ran them to the cabin.

I drove the car around the block, which was very interesting. My car has been running very poorly ever since returning from the RRC, and I thought it was just the fuel filter. But it's not. It was very interesting to watch the needle moving as I opened and closed the throttle and it also helped me visualize the problem that I'm having. My car has been intermittently losing power, and I would be driving along at a nice EGT, and the car would lurch, and I would look over and the EGT was extremely low. And since it is my understanding that EGT is more affected by timing than AFR, I can be pretty confident that for some reason my timing is wonky. This may be the KitCarlson EFI dying or a bad wiring harness connection. It might be time to *GASP* install a spare set of carbs and a Mallory. (IMG:style_emoticons/default/ohmy.gif)

This was an affordable and easy upgrade. I expect that it will be a useful tool for tuning the motor and if anyone has an extra gauge slot to fill, I would recommend an EGT after you have a CHT.

[ME733]

............Well aircraft spruce is a good source for the EGT guage and parts. THEIR products are FAA approved.....which means they are the highest quality you can find.....some of the other brands are NOT.........then with all the genius EGT users making comments NO ONE has said ANYTHING, at all about the required location of the temperature probes to achieve accuracy of the combustion temperature....the EGT....readings.........FINALLY ....reguardless of what you have heard or read or have been told here is the facts.....EGT readings of 1275 to 1375......THESE temperatures are suitable ONLY FOR FORGED PISTONS...read FORGED PISTONS ONLY..........heres why.....at 1400 degrees a (typical) forged piston has lost 1/2 ONE HALF of it,s strength./structural regidity......(this is why you see drag racers, replacing pistons after every run.)(in the higher classes)..(even tho they have overkill in piston design) the temperatures and fuels (nitromethane)..shatter..in small fractures...their pistons , forcing replacement or a lost engine.......SO consider this....a CAST PISTON is NOT as strong as a forged piston....this is why cast pistons in stock engines are heaver than a replacement forged piston....they are making up for, in total mass, their lack of strength, as compaired to forged.....also cast pistons do not expand as much as forged , therefore, tighter cylinder wall clearances work fine for stock engines....BUT a EGT of 1275 degrees is NOT , NOT suitable /safe/or smart to use with cast pistons.....................................hope this saves you an engine.murray.