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Mazda Rotary Club

Cars by Model Type => 3rd generation RX-7's => Topic started by: Andy J Conroy on August 31, 2008, 09:29:55 AM

Title: egt max....
Post by: Andy J Conroy on August 31, 2008, 09:29:55 AM
What is the max we can see on our engines... currently im toping out at 800 degrees.... thats after a long wot run in 4th and 5th...
 
Afr\'s are arround 11. to 11.5....
Title: egt max....
Post by: AshRX on August 31, 2008, 03:46:08 PM
i never see over 750 on mine and thats a full boost doing track time. 800 is ok but if you see 900 start backing off

is that afr\'s on full boost?
Title: egt max....
Post by: Andy J Conroy on August 31, 2008, 03:54:01 PM
800 was at the end of fifth.. and it was a real hot day hear yesterday... did the same too.. and it was arround the 750 mark.......     yes it is the afr\'s on 1.0 bar full boost for the moment )
Title: egt max....
Post by: SiH on August 31, 2008, 03:54:32 PM
Totally depends - where\'s your EGT probe?
Not much use really comparing two readings if the probes aren\'t in the same place :)
Title: egt max....
Post by: Andy J Conroy on August 31, 2008, 03:59:59 PM
Quote from: SiH;529461Totally depends - where\'s your EGT probe?
Not much use really comparing two readings if the probes aren\'t in the same place :)

its in the manifold....
Title: egt max....
Post by: Timmy on August 31, 2008, 04:13:55 PM
Thats way too close to the engine, iirc need to be quite far down the down pipe. 800 in the mani is probably on the cold/rich side.
Title: egt max....
Post by: Andy J Conroy on August 31, 2008, 04:16:11 PM
well it is arrounf 11.0 full chat.... mind you im only running 1 bar... Im dying to get it mapped for more... but im very cautious i guess...
Title: egt max....
Post by: SiH on August 31, 2008, 06:08:36 PM
Quote from: Timmy;529467Thats way too close to the engine, iirc need to be quite far down the down pipe. 800 in the mani is probably on the cold/rich side.

Really? I was under the impression the closest to the combustion chamber the better?
Title: egt max....
Post by: BlitzBoy on August 31, 2008, 08:19:19 PM
pre turbo is ideal but you will see 200-300 degrees more, plus the probe wont  last too long lol
Title: egt max....
Post by: m1tch on August 31, 2008, 09:13:47 PM
900ish is max, although this is in degrees F, pinapple racing do a cool dual EGT gauge so you can watch each rotor:

http://www.pineappleracing.com/index.asp?PageAction=VIEWPROD&ProdID=24
Title: egt max....
Post by: BenLewisMav on August 31, 2008, 10:14:11 PM
What about positioning it next to the stock lambda position?
Title: egt max....
Post by: AshRX on August 31, 2008, 10:19:22 PM
I have mine in the down pipe about 7 inches from the turbo rear housing. As Mark said where you have it will destroy sensors, will last longer in the downpipe
Title: egt max....
Post by: BenLewisMav on August 31, 2008, 10:22:32 PM
What kind of temp would expect to get there?
And how you do put it there? I was going to get a thermocouple boss from RS components then drill and tap a hole in the manifold, would this work the same in the downpipe? Or would it need to be welded?
 Cheers
Title: egt max....
Post by: AshRX on September 01, 2008, 08:32:06 AM
im hitting 750 degrees and that is with a Defi EGT drill and tapped ionto the top of the downpipe

In manifold you risk the probe breaking and making its way through the turbo
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