Just out of interest, mine is running 1.4 bar on a hybrid turbo.
Previous owner ran it on this and its been fine for me. But what's the max people are running and how long will it likely last before it goes bang if I leave it on 1.4bar?
I also have intercooler, dumpvalve and full exhaust
How much boost are you running on your Rev3 engine?
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How much boost are you running on your Rev3 engine?
Last edited by Revo on Tue Apr 13, 2010 2:50 pm, edited 2 times in total.
Re: How much boost are you running on your Rev3 engine?
Hi mate i've got a rev3 running at around a bar at the moment, was running 1.2+ but I turned the mbc down a tad.
Just waiting to get another profec b and i'll run it at about 1.1 bar.
This is on a pretty standard rev 3, on mods are exhaust, decat, cold air feed but I do have a fat ARC side mount intercooler which should help keep the temps down
Just waiting to get another profec b and i'll run it at about 1.1 bar.
This is on a pretty standard rev 3, on mods are exhaust, decat, cold air feed but I do have a fat ARC side mount intercooler which should help keep the temps down
Re: How much boost are you running on your Rev3 engine?
Yeah I forgot to add I have intercooler etc etc as well. Just wondering how much boost the internals of the engine can take before things start to get a bit dangerous. !
Re: How much boost are you running on your Rev3 engine?
My honest opinion and recommended advice...... doesn't sound much... peak it at 1.3 on cooler days, otherwise, run 1.2 bar... heat of the summer... 1 bar...
The piston integrity is one of the issues... I tested a stock engine with a chargecooler, so not the heat killing it off... it gradually got worse in performance, didn't feel fast... when I pulled it apart, all 4 pistons had stress cracks or cracks around the ringland.. between the 1st and 2nd ring. This was running a continuous 1.4 to 1.5 bar !
Engine had only done 45K miles.. and unopened... I did this to test the integrity and swapped it out for my built engine.... and changed out the pistons on the one damaged... going back to 2004 now !
The piston integrity is one of the issues... I tested a stock engine with a chargecooler, so not the heat killing it off... it gradually got worse in performance, didn't feel fast... when I pulled it apart, all 4 pistons had stress cracks or cracks around the ringland.. between the 1st and 2nd ring. This was running a continuous 1.4 to 1.5 bar !
Engine had only done 45K miles.. and unopened... I did this to test the integrity and swapped it out for my built engine.... and changed out the pistons on the one damaged... going back to 2004 now !
|| S256SX Airwerks Powered MR2 Turbo || V10 BMW M5 ||
Re: How much boost are you running on your Rev3 engine?
Ah ok. interesting. Might be worth turning it down a tad then
Re: How much boost are you running on your Rev3 engine?
I run
MBC @ 1.2 bar
I.C being fitted Monday due to warmer weather
Full exhaust
Apexi filter
MBC @ 1.2 bar
I.C being fitted Monday due to warmer weather
Full exhaust
Apexi filter
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Re: How much boost are you running on your Rev3 engine?
Standard....
with a Greddy Intercooler
Induction kit
De-cat
Mongoose Exhaust
with a Greddy Intercooler
Induction kit
De-cat
Mongoose Exhaust
Re: How much boost are you running on your Rev3 engine?
Revo wrote:Ah ok. interesting. Might be worth turning it down a tad then
I know you'll miss that hit, but believe me.. for the cost and efforts involved, simply not worth it.. unless you've got a spare £2k+ kicking about !!
|| S256SX Airwerks Powered MR2 Turbo || V10 BMW M5 ||
Re: How much boost are you running on your Rev3 engine?
Revo wrote:Ah ok. interesting. Might be worth turning it down a tad then
Yeah, I'd turn it down asap!!
If you can't see the angle, you're in trouble.
Re: How much boost are you running on your Rev3 engine?
JJ wrote:My honest opinion and recommended advice...... doesn't sound much... peak it at 1.3 on cooler days, otherwise, run 1.2 bar... heat of the summer... 1 bar...
The piston integrity is one of the issues... I tested a stock engine with a chargecooler, so not the heat killing it off... it gradually got worse in performance, didn't feel fast... when I pulled it apart, all 4 pistons had stress cracks or cracks around the ringland.. between the 1st and 2nd ring. This was running a continuous 1.4 to 1.5 bar !
Engine had only done 45K miles.. and unopened... I did this to test the integrity and swapped it out for my built engine.... and changed out the pistons on the one damaged... going back to 2004 now !
Your just talking about the standard pistons though right, not the block? Forgies are fine for up to 1.6bar most seem to say, but I agree, 1.5bar is a good safe limit
Re: How much boost are you running on your Rev3 engine?
I'm talking about max boost a stock block can take before things go wrong
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Re: How much boost are you running on your Rev3 engine?
I run 1.2bar (though mapped to 1.3).
Revo, u running larger injectors and aftermarket EMS with that?
Revo, u running larger injectors and aftermarket EMS with that?
Re: How much boost are you running on your Rev3 engine?
Well I solved the mystery of the high boost!
Took the car out to have a fiddle with the boost settings and give the new brake pads a few more heat cycles before the track day and...
you guys are never going to let me live this down.. but I made a discovery, its not 1.4bar, but 14psi!! yes thats right I read the flippin gauge wrong and assumed it was in bar, but its in PSI!
14 PSI is actually about 1 bar!!
But this shameful storey has a happy ending.. according to you guys 1.2bar seems happily 17.5psi.. which I promptly turned the boost controller up to!
Peaks at 17psi now and goes to about 10-12psi after 5k
So now its even quicker! hahaha!! Weeeeeeee!
Good news as it means my car was never boosting more than it should of been happy face.
Took the car out to have a fiddle with the boost settings and give the new brake pads a few more heat cycles before the track day and...
you guys are never going to let me live this down.. but I made a discovery, its not 1.4bar, but 14psi!! yes thats right I read the flippin gauge wrong and assumed it was in bar, but its in PSI!
14 PSI is actually about 1 bar!!
But this shameful storey has a happy ending.. according to you guys 1.2bar seems happily 17.5psi.. which I promptly turned the boost controller up to!
Peaks at 17psi now and goes to about 10-12psi after 5k
So now its even quicker! hahaha!! Weeeeeeee!
Good news as it means my car was never boosting more than it should of been happy face.
Re: How much boost are you running on your Rev3 engine?
Revo wrote:Well I solved the mystery of the high boost!
Took the car out to have a fiddle with the boost settings and give the new brake pads a few more heat cycles before the track day and...
you guys are never going to let me live this down.. but I made a discovery, its not 1.4bar, but 14psi!! yes thats right I read the flippin gauge wrong and assumed it was in bar, but its in PSI!
14 PSI is actually about 1 bar!!
But this shameful storey has a happy ending.. according to you guys 1.2bar seems happily 17.5psi.. which I promptly turned the boost controller up to!
Peaks at 17psi now and goes to about 10-12psi after 5k
So now its even quicker! hahaha!! Weeeeeeee!
Good news as it means my car was never boosting more than it should of been happy face.
LOL, great ending and nice suprise. Enjoy
Re: How much boost are you running on your Rev3 engine?
its not 1.4bar, but 14psi!! yes thats right I read the flippin gauge wrong and assumed it was in bar
In reality, if your setup is bone stock ( ecu / engine ), you wouldn't see those level of boost without hitting fuel cut... sort of a misfire on boost ! Well done for owning up !!
Remember though, setting the boost to 1.2 bar on cooler days, it may spike to 1.3X which inadvertingly will hit fuel cut... again though... as a precaution, during the "hotter" days, try not to kick it too much as heat is then the killer of pistons... or turn the boost down... this is the luxury of electronic boost controllers !
|| S256SX Airwerks Powered MR2 Turbo || V10 BMW M5 ||
Re: How much boost are you running on your Rev3 engine?
10-12psi at redline, you sure???
Sounds like the boost controller needs setting up.
Should still be pulling 17psi at 7k rpm
Sounds like the boost controller needs setting up.
Should still be pulling 17psi at 7k rpm
Re: How much boost are you running on your Rev3 engine?
Fair enough, might get it looked at then as it definitely tapers off
Re: How much boost are you running on your Rev3 engine?
definatly diy
just have a look around on the web for the manual and start playing.
just have a look around on the web for the manual and start playing.
Re: How much boost are you running on your Rev3 engine?
and btw
quote from me in your other older thread below
Silly question I know, but this is 1.4bar and not 14psi right?
http://www.imoc.co.uk/forums/viewtopic. ... c&start=20
quote from me in your other older thread below
Silly question I know, but this is 1.4bar and not 14psi right?
http://www.imoc.co.uk/forums/viewtopic. ... c&start=20
Re: How much boost are you running on your Rev3 engine?
Cool I found a manual
Looks like I need to turn the gain up a bit to get a bit more consistency
Looks like I need to turn the gain up a bit to get a bit more consistency