JamieP Posted April 15, 2006 Share Posted April 15, 2006 i did a search and cant find much started looking at this last couple of days and im getting a max reading of about 700deg after a fast run, is that about right? Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted April 15, 2006 Share Posted April 15, 2006 Its more during the fast run/peak boost, that you need to monitor, but if its a peak hold meter then 700 is fine, its when it gets to 950 that you need to start looking into it. Quote Link to comment Share on other sites More sharing options...
JamieP Posted April 15, 2006 Author Share Posted April 15, 2006 Its more during the fast run/peak boost, that you need to monitor, but if its a peak hold meter then 700 is fine, its when it gets to 950 that you need to start looking into it. cool.. thats the highest ive seen it read, full boost fast run Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted April 15, 2006 Share Posted April 15, 2006 Just a thought, where is the sensor located? in the turbo or after it? Quote Link to comment Share on other sites More sharing options...
JamieP Posted April 15, 2006 Author Share Posted April 15, 2006 Just a thought, where is the sensor located? in the turbo or after it? not sure ill check tomorrow, where is the best place for it? Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted April 15, 2006 Share Posted April 15, 2006 Well best place is in one of the manifold runners before the turbo, but i am a bit weary of the sensor failing and destroying the turbo, so mine will be in the down pipe as close after the turbo as possible, but you need a rough idea of what temps people are getting before the turbo, to work out the temp difference, its usually about 150c less. Quote Link to comment Share on other sites More sharing options...
dangerous brain Posted April 15, 2006 Share Posted April 15, 2006 about 700 is right for the sensor being in the decat pipe or around the cats Quote Link to comment Share on other sites More sharing options...
Ian C Posted April 15, 2006 Share Posted April 15, 2006 When I had to fit my EGT sensor probe on my tubular manifold, I decided the best compromise place would be in the collector, where the 6 tubes meet and 2 tubes go off to the wastegate. It's slightly biased towards the wastegate so that if the probe does go, it should fly out the screamer pipe and bypess the expensive turbo altogether, but I still get an accurate EGT reading as it's pre-turbo Oh, and I've found you can get near your peak EGTs by fast cruising off boost around 3500rpm. Funny old thing, EGTs. -Ian Quote Link to comment Share on other sites More sharing options...
terribleturner Posted April 15, 2006 Share Posted April 15, 2006 I was talking to Greg about this yesterday Jamie on where it should be as when i got a garage tto do mine theey installed it in the 2nd decat pipe While my CI single manifold had a hole in the manifold at #6. Quote Link to comment Share on other sites More sharing options...
dangerous brain Posted April 15, 2006 Share Posted April 15, 2006 My old supes was at the No. 6 position. Hits 900 plus on WOT Quote Link to comment Share on other sites More sharing options...
Class One Posted April 15, 2006 Share Posted April 15, 2006 Oh, and I've found you can get near your peak EGTs by fast cruising off boost around 3500rpm. Funny old thing, EGTs. -Ian Funny you should mention that as my Blitz FATT has two settings one where you can fix the timer and one that seems "proactive" in that the base value is set but the time can vary according to work load. I find that fast crusing at around 3500rpm (max torque output is it ish?) off boost puts the timer value well up. I assume that it works according to EGT's Probably wrong though. (As I've been drinking and I'm probably talking gibberish) Quote Link to comment Share on other sites More sharing options...
sarjo Posted April 15, 2006 Share Posted April 15, 2006 Scary, mine averages about 1000 - but yesterday it hit 1200 after an hour at 70-80mph on the motorway??? Quote Link to comment Share on other sites More sharing options...
dangerous brain Posted April 15, 2006 Share Posted April 15, 2006 OK step back from the Mic. Dude thats way way too high. You need some cooling goin on there. Thats utter madness running an engine at that temp. Have you got an AFR meter? I'd get one. Check to see if its running too lean as those temps are uber too high. Quote Link to comment Share on other sites More sharing options...
sarjo Posted April 15, 2006 Share Posted April 15, 2006 OK step back from the Mic. Dude thats way way too high. You need some cooling goin on there. Thats utter madness running an engine at that temp. Have you got an AFR meter? I'd get one. Check to see if its running too lean as those temps are uber too high. Have got an AFR, when she gets going she's averaging about 14 - which I've heard is about right. So whats happening to make it go so high? Gotta check out where the sensor is then . . . . any ideas? Quote Link to comment Share on other sites More sharing options...
b_have Posted April 15, 2006 Share Posted April 15, 2006 Scary, mine averages about 1000 - but yesterday it hit 1200 after an hour at 70-80mph on the motorway??? That will be farenheit )or you have an engine made of something I want! Quote Link to comment Share on other sites More sharing options...
Matt Harwood Posted April 15, 2006 Share Posted April 15, 2006 Have got an AFR, when she gets going she's averaging about 14 - which I've heard is about right. So whats happening to make it go so high? Gotta check out where the sensor is then . . . . any ideas? If it's averaging 14's at full throttle, start saving for a new engine... Quote Link to comment Share on other sites More sharing options...
dangerous brain Posted April 16, 2006 Share Posted April 16, 2006 If it's averaging 14's at full throttle, start saving for a new engine... Is that over or under fuel? Quote Link to comment Share on other sites More sharing options...
JohnA Posted April 16, 2006 Share Posted April 16, 2006 under. Only in exceptional cases do you want to see 12:1 or higher Normally people aim 11:1 for safety (we're talking full throttle AFRs, remember) Quote Link to comment Share on other sites More sharing options...
JamieP Posted April 16, 2006 Author Share Posted April 16, 2006 Have got an AFR, when she gets going she's averaging about 14 - which I've heard is about right. So whats happening to make it go so high? Gotta check out where the sensor is then . . . . any ideas? did i read you brought the car of leon green? Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted April 16, 2006 Share Posted April 16, 2006 Scary, mine averages about 1000 - but yesterday it hit 1200 after an hour at 70-80mph on the motorway??? I suspect the gauge is reading wrongly, your pistons would probably be melted by now if that was the case, and cruising would normally give a much lower reading that at full boost. You haven't mucked about with the fuelling, or timing, in any way, have you? Quote Link to comment Share on other sites More sharing options...
sarjo Posted April 16, 2006 Share Posted April 16, 2006 I suspect the gauge is reading wrongly, your pistons would probably be melted by now if that was the case, and cruising would normally give a much lower reading that at full boost. You haven't mucked about with the fuelling, or timing, in any way, have you? Chris - havent messed with the fuelling but it is in desperate need of a bloody good mapping! Its aem and to be honest dont think its had a proper mapping since it went on the car about eighteen months ago. Trying to get it to Bijal on Tuesday but at the mo gearbox is off the car again. Was told that 14 was about right on the AFR, I actually think its running a bit rich . . . Yes it is in fahrenheit, no special engine for me . . yet ! Didnt buy the car off Leon Green, but another Leon in Southampton who told me when I bought the car that 1000 was about right?? So, am I going to get the car from Cwmbran to Leicester on Tuesday without doing some damage? How can I eliminate faulty guages without putting new ones on? Sorry for the highjack Jamie Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted April 16, 2006 Share Posted April 16, 2006 If it's in fahrenheit then that's OK.... Just drive it gently until it's mapped. Quote Link to comment Share on other sites More sharing options...
JamieP Posted April 16, 2006 Author Share Posted April 16, 2006 just had a look and my EGT sensor probe is right where the turbo bolts to the manifold Quote Link to comment Share on other sites More sharing options...
sarjo Posted April 16, 2006 Share Posted April 16, 2006 If it's in fahrenheit then that's OK.... Just drive it gently until it's mapped. Yeah, will do. That makes me feel happier knowing the car aint gonna blow up on the m5! The car was doing about 85-90 leptons on average at 3000 revs and hitting 12-1300 on the egt. Does that sound about right? Will have to try a conversion of F to C to compare with Jamie OK - just done that 1200 is 648.9 oC 1300 is 704.4 oC. I was told Friday that the pistons are made of aluminium and the melting point for these is 660 oC, does anyone know if thats right cus if thats the case and my dials are right, I shouldnt have any pistons left, nor Jamie !!!!! I guess it depends where the sensor is though eh? Quote Link to comment Share on other sites More sharing options...
uk-rich Posted April 16, 2006 Share Posted April 16, 2006 i put mine just after the turbo in the down pipe (about half a inch away), really didn't want it breaking up in one of the runners a eating my turbo Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.