What determines how much boost my engine can handle?
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PassionFord Post Whore!!
Joined: May 2003
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From: Middle of Nowhere
My 4x4 cossie turbo has arrived and my adapter to fit my S2 should be here in 2 days or so, so i would like to know what max boost i can put thru it? Turbo is mint no play done 60k, engine also done 60k.
I am curious as how much boost my engine can handle it is a case of getting it set up (fueling etc) so it can handle whatever boost the turbo can handle till it blows?
I am curious as how much boost my engine can handle it is a case of getting it set up (fueling etc) so it can handle whatever boost the turbo can handle till it blows?
i used to run 22psi on my erst on standard injection mate
all thanks to mark shead's setting up
but i did lower the compression, shot peened the rods and crank
totally lightened and balanced from pully to and including clutch.
arp big end bolts, grs intercooler
all thanks to mark shead's setting up
but i did lower the compression, shot peened the rods and crank
totally lightened and balanced from pully to and including clutch.
arp big end bolts, grs intercooler
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mine spikes at 20 holds 18, 17, 16, 15, 14, 13, 12, 10......
but that was with the old wanky pace!!
should be peaking at apporx 21 / 22 and holding 18 with the new much BIGGGGGGGGEEERRR intercooler!!
but i won't run more than 18psi...... (as i have nos)
but that was with the old wanky pace!!
should be peaking at apporx 21 / 22 and holding 18 with the new much BIGGGGGGGGEEERRR intercooler!!
but i won't run more than 18psi...... (as i have nos)
It's all to do with cylinder pressures and the correct a/f ratio. Obviously with stock c/r, you will be limited to the amount of boost you can run unless you lower this
.
I would take it to someone who can det check it for you and set it safely using the correct equipment to find out where the limit is (det-cans etc).
.I would take it to someone who can det check it for you and set it safely using the correct equipment to find out where the limit is (det-cans etc).
Originally Posted by Gra
oh cool cheers mike, thats wicked, as it explains it very well.
Keith it dont matter how much boost you got, when your nOZ blows your engine up

Keith it dont matter how much boost you got, when your nOZ blows your engine up

and its FACT that a VERY VERY VERY small % of NOS users blow their engines!! in fact, it can help cool the engine!!
the blown engines are usually down to either crap installations or just badly setup with too much NOS!!
GEEK!!!!!!!!
Originally Posted by Max
Originally Posted by keithG666
the blown engines are usually down to either crap installations

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From: Ramsgate, Kent Drives: E39 530D Touring
i havent touched it yet 
which reminds me kieth, when you wanna get the wiring done? i SHOULD be free on saturday afternoon (im going to SCC in the AM providing my springs turn up in time). you pay for my petrol and buy me a maccyDs tho

which reminds me kieth, when you wanna get the wiring done? i SHOULD be free on saturday afternoon (im going to SCC in the AM providing my springs turn up in time). you pay for my petrol and buy me a maccyDs tho
PMSL i reckon the ACT will be in tripple figures if your using a standard intercooler and lots of boost...
If your still on the standard cooler then judging by the rest of the spec this will be what limits you most.. IMO you wont want more than 13Psi
If your still on the standard cooler then judging by the rest of the spec this will be what limits you most.. IMO you wont want more than 13Psi
Originally Posted by Jim Galbally
i havent touched it yet 
which reminds me kieth, when you wanna get the wiring done? i SHOULD be free on saturday afternoon (im going to SCC in the AM providing my springs turn up in time). you pay for my petrol and buy me a maccyDs tho

which reminds me kieth, when you wanna get the wiring done? i SHOULD be free on saturday afternoon (im going to SCC in the AM providing my springs turn up in time). you pay for my petrol and buy me a maccyDs tho
and yes, if you want to come down saturday....I'M FREEE!!
but i got to meet up with chip sometime next week to pick up the minimiser...can you still wire it all up without this at the moment?!?!?
Originally Posted by Gra
oh cool cheers mike, thats wicked, as it explains it very well.
Keith it dont matter how much boost you got, when your nOZ blows your engine up

Keith it dont matter how much boost you got, when your nOZ blows your engine up

Its STUPIDITY that blows engines.
If people are going to play with things they should learn enough about them first, or get the help of someone who does.
Thread Starter
PassionFord Post Whore!!
Joined: May 2003
Posts: 6,220
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From: Middle of Nowhere
chip you should re word that
From:
Nitrous doesnt blow up engines, just like boost doesnt.
Its STUPIDITY that blows engines.
to:
Nitrous doesnt blow up engines, just like boost doesnt.
Its Keith
that blows engines.
From:
Nitrous doesnt blow up engines, just like boost doesnt.
Its STUPIDITY that blows engines.
to:
Nitrous doesnt blow up engines, just like boost doesnt.
Its Keith
that blows engines.
Originally Posted by chip-3door
Originally Posted by Gra
oh cool cheers mike, thats wicked, as it explains it very well.
Keith it dont matter how much boost you got, when your nOZ blows your engine up

Keith it dont matter how much boost you got, when your nOZ blows your engine up

Its STUPIDITY that blows engines.
If people are going to play with things they should learn enough about them first, or get the help of someone who does.
ignore Gra....he's just short!!
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