lost power after cam install
Thread Starter
Launching!
Joined: Mar 2006
Posts: 261
Likes: 1
From: Nebraska
lost power after cam install Ok lets cover the basics quick..
Previous
98 M6 114k miles, TSP LT's (no cats), LS6 intake, CAI, TB bypass, and corsa exhaust
340RWHP
Now... all the above plus
PRC dual springs, TSP harden pushrods, TSP 228R cam, LS2 timing chain, and Ls6 oil pump (ported)
Just got off the dyno.. stopped at 4kRPMs because it didn't sound right.. timing was put in place to get a good run out of it...tuner figured should have done 370ish on the first pull.. instead at 4k i was only at 300. What could the problem be?
Also a quick question... what should my oil pressure with a ported pump be on a cold idle?
Previous
98 M6 114k miles, TSP LT's (no cats), LS6 intake, CAI, TB bypass, and corsa exhaust
340RWHP
Now... all the above plus
PRC dual springs, TSP harden pushrods, TSP 228R cam, LS2 timing chain, and Ls6 oil pump (ported)
Just got off the dyno.. stopped at 4kRPMs because it didn't sound right.. timing was put in place to get a good run out of it...tuner figured should have done 370ish on the first pull.. instead at 4k i was only at 300. What could the problem be?
Also a quick question... what should my oil pressure with a ported pump be on a cold idle?
On The Tree
Joined: May 2006
Posts: 137
Likes: 0
From: 60 mi SE of Melbourne, Australia
Originally Posted by 2xLS1
Cam timing off a tooth would be a possibility.
I'd go with that one too, it happened to me. The engine just wouldn't make power over 4000rpm and after dropping the exhaust to ensure the cats weren't buggered (which they weren't), did more checking and found that the cam was off by one sprocket tooth. Once adjusted, it was no worries.
Good luck with it,
Macca
Originally Posted by MagiC5
Ok lets cover the basics quick..
Previous
98 M6 114k miles, TSP LT's (no cats), LS6 intake, CAI, TB bypass, and corsa exhaust
340RWHP
Now... all the above plus
PRC dual springs, TSP harden pushrods, TSP 228R cam, LS2 timing chain, and Ls6 oil pump (ported)
Just got off the dyno.. stopped at 4kRPMs because it didn't sound right.. timing was put in place to get a good run out of it...tuner figured should have done 370ish on the first pull.. instead at 4k i was only at 300. What could the problem be?
Also a quick question... what should my oil pressure with a ported pump be on a cold idle?
Previous
98 M6 114k miles, TSP LT's (no cats), LS6 intake, CAI, TB bypass, and corsa exhaust
340RWHP
Now... all the above plus
PRC dual springs, TSP harden pushrods, TSP 228R cam, LS2 timing chain, and Ls6 oil pump (ported)
Just got off the dyno.. stopped at 4kRPMs because it didn't sound right.. timing was put in place to get a good run out of it...tuner figured should have done 370ish on the first pull.. instead at 4k i was only at 300. What could the problem be?
Also a quick question... what should my oil pressure with a ported pump be on a cold idle?
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Thread Starter
Launching!
Joined: Mar 2006
Posts: 261
Likes: 1
From: Nebraska
my tuner played with it so it drives ok.... but at first the car wouldn't run at idle... still kinda rough for the size of cam... well i guess illl pull everything off (what a bitch) and double check the timing chain.
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Originally Posted by PREDATOR-Z
rookies
Check out the sprockets and timing chain make sure it's lined up.You can sometimes tell from a data log like the "live" tuning of HP tuners where you can read the timing, O2 voltage, enging RPM, Speed, etc. maybe you should ask the tuners. What year is the car are you getting any Knock or Knock retard? i know for some like 98's KR is common after cam installs typically 4* retard. or maybe your exhaust i banging or something
The problem lies somewhere in your timing i would say so i would try any possible way to see if it is off.
