speedyxjs
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| posted on 22/10/09 at 08:33 PM |
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Exhaust discolouration
Just wanted to check to make sure this is normal.
After my first long engine run, the exhaust has the normal blueish tint, as they normally do. The thing i am a bit concerned about is the fact that it
is discoloured right up to the silencer.
Is this ok as i have never seen this much exhaust 'blued'?
How long can i resist the temptation to drop a V8 in?
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austin man
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| posted on 22/10/09 at 08:35 PM |
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would suggest a lot of heat, have you noted any overheating problems ?? is it running ok ?? if both the previous are ok I wouldnt worry
Life is like a bowl of fruit, funny how all the weird looking ones are left alone
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speedyxjs
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| posted on 22/10/09 at 08:39 PM |
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It had an air leak but not sure if that would increase the temperature. A small section was covered in exhaust wrap to protect the brake reservoir and
it was idling at, i would guess, around 3-4000 rpm as it wouldn't idle (hopefully caused by the air leak).
How long can i resist the temptation to drop a V8 in?
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iank
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| posted on 22/10/09 at 08:43 PM |
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It will get much hotter if it's running lean due to the air leak.
Be careful you can destroy an engine if it's very lean.
[Edited on 22/10/09 by iank]
--
Never argue with an idiot. They drag you down to their level, then beat you with experience.
Anonymous
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speedyxjs
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| posted on 22/10/09 at 08:46 PM |
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quote:
Originally posted by iank
It will get much hotter if it's running lean due to the air leak.
Be careful of you can destroy an engine if it's very lean.
Well that would probably explain it then 
The air leak should be sorted now but i need to put some more oil in before i can test it and i cant afford the oil atm 
How long can i resist the temptation to drop a V8 in?
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prawnabie
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| posted on 22/10/09 at 08:49 PM |
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What oil are you after speedy?
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speedyxjs
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| posted on 22/10/09 at 08:51 PM |
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10w 40
How long can i resist the temptation to drop a V8 in?
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twybrow
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| posted on 22/10/09 at 08:54 PM |
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You have to run very lean (AFR 17+), and normally under load to really do damage don't you? If your zorst is new, then I wouldn't worry -
I think it looks much better than shiny stainless!
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mark chandler
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| posted on 22/10/09 at 09:30 PM |
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If you run a cars engine with it parked up then the exhaust will get very hot as nothing blowing around to cool it off.
So 5 minutes @ 4000rpm, no load would start to make the thing red hot along its entire length
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A1
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| posted on 23/10/09 at 10:37 AM |
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when my engine was running very lean it was glowing after a minute or so of running, but when i was at the sva they were running it for about 20 mins
and it was fine, no redness at all
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