Phase Limiter v Phase Lockout
Thread Starter
Drifting
Joined: Jul 2015
Posts: 1,678
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From: NY
Phase Limiter v Phase Lockout
I know a lot of the early LT4 builds were going with VVT deletes and cam phase limiters. Has there been a shift towards lockouts? If so what was the discovery to the shift? Buddy of mine is trying to diagnose a possible drivetrain issue and a few people are stating its a lock out vs limiter issue. Any insight would be great!!
Last edited by BooSSted; May 7, 2020 at 09:30 PM.
Supporting Vendor
Joined: Feb 2009
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From: Mesa Az
we always do a full lockout. seen it countless times cars come in from other shops with a cam and a phaser limiter and the cam will roll back some up top.
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Cordes Performance Racing aka "CPR"
Owner of AZ's premier LSX/LTX motorsports shop
http://cordesperformanceracing.com/
www.facebook.com/cordesperformanceracing.com
joe@cordesperformanceracing.com
480-359-5914
Thread Starter
Drifting
Joined: Jul 2015
Posts: 1,678
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From: NY
Seeing this on certain applications more so than other, PD v Centri with more linear power or does it not matter really? Certain power level more at risk?
Thread Starter
Drifting
Joined: Jul 2015
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From: NY
Drifting
Joined: Jun 2000
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From: Dubai, UAE
What I understood previously is that VVT cams require phase limiters, while non-VVT cam require phase lock. I could be wrong
I am currently running LPE GT35 cam. Being a VVT cam, it has 11 degrees advance. I am suspecting that I may have a "roll back" problem at high rpm
Does anyone know what might happen if you put a phase lock on a VVT cam?
I am currently running LPE GT35 cam. Being a VVT cam, it has 11 degrees advance. I am suspecting that I may have a "roll back" problem at high rpm
Does anyone know what might happen if you put a phase lock on a VVT cam?
Melting Slicks
Joined: Aug 2004
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If you still have a VVT cam I belive you will have to change the lifters as well. I don't think you can just put a lock in the gear and call it good. The tune also needs to be adjusted. I don't know for certain that you can do this. It isn't a normal practice to attempt this way. I'd suggest a non VVT cam setup and lock it out. On a built motor and 2650 setup you shouldn't be running VVT anyways.
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Drifting
Joined: Jun 2000
Posts: 1,577
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From: Dubai, UAE
. I am running LS7 lifters
Thread Starter
Drifting
Joined: Jul 2015
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From: NY
I'm running LS7 lifters as well no issues up top. However my buddy is seeing issues with his build. But he has a 2650 on his LT4/Camaro. Car was breaking up, up top, now she's ticking on the leftside. Hoping its just a lifter. Oil pressure, oil and filter all look good.