boost and ping probs ...
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From: fort walton beach,fl
boost and ping probs ... Help needed! 1:Will a comp cam with a lsa of 112 be ok with a turbo set up or will it bleed off too much pressure?
i've had this cam in my motor since i last rebuilt it...
i have the ebay clone as some o' ya'll may already know...
reason i ask is because i've been experienceing over boosting i want 8psi..but was seeing 8-12 boosts,
i switched to a 5# w/g spring and i still see 7-11 psi...
i've doubled up t-bolt clamps in some places, and i have checked and/or replaced any pressure leaking injector o-rings...
if the boost spike is due to a leak and not the cam..then where the hell should i look next for leaks?...
motor doesn't smoke, i dont loose coolant..
2: I also am experienceing a lite gas ping just as motor starts to load and build boost in any gear usualy for first loaded 1,000rpm of gear.....example"say your going 0-xxmph and start to slowly accelrate and .......there it is
i've had this cam in my motor since i last rebuilt it...
i have the ebay clone as some o' ya'll may already know...
reason i ask is because i've been experienceing over boosting i want 8psi..but was seeing 8-12 boosts,
i switched to a 5# w/g spring and i still see 7-11 psi...
i've doubled up t-bolt clamps in some places, and i have checked and/or replaced any pressure leaking injector o-rings...
if the boost spike is due to a leak and not the cam..then where the hell should i look next for leaks?...
motor doesn't smoke, i dont loose coolant..
2: I also am experienceing a lite gas ping just as motor starts to load and build boost in any gear usualy for first loaded 1,000rpm of gear.....example"say your going 0-xxmph and start to slowly accelrate and .......there it is
Last edited by defaultexistence; May 29, 2008 at 04:04 PM.
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From: fort walton beach,fl
any helpers? please chime in
I have the kit that yours was copied from for quite some time. I have the turbosmart 38mm race gate and megasonic BOV found here: http://www.forcedinductions.com/product5.htm and don't have any boost creep at all, but I likely have a different turbo so it may be apples to oranges.
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What size turbo? gate may be to small. Especially being a knock off gate, i would be scared of it. Im guessing no boost controller? just running off the wastegate spring? I have heard of some electronic boost controllers having pretty bad boost creep.
good luck
Chris
ps.. Also as stated, it might just be where the wastegate is placed could be causing boost creep. Do you have pics of your install. Might help a little.
good luck
Chris
ps.. Also as stated, it might just be where the wastegate is placed could be causing boost creep. Do you have pics of your install. Might help a little.
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From: fort walton beach,fl
My turbo's #'s are as follows ..ex. side is 68 A/R and the comp. side is a 70 A/R,..also says somthing about 74mm on the comp side as well...
i dont know how to measure back pressure....
is the 112lsa comp cam i have going to be any good with a turbo?
......heres where the w/g is
i dont know how to measure back pressure....
is the 112lsa comp cam i have going to be any good with a turbo?
......heres where the w/g is 
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From: fort walton beach,fl
Thread Starter
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From: fort walton beach,fl
is it a useable size ? i really dont know where to start...the turbo is the one i got with the kit..havent really had the$$ to use smething else...or no idea where to start when considering A/R sizes......your thoughts on my over all needs? does the exa. housing need upped? will that be possible & still use the kits down pipe as-is?