Lifter Failure
05-10-2007, 02:27 PM
#1
Lifter Failure I dont know if any of the other shop have been having this problem, but we have been seeing alot of lifter failures after cam swaps. 3 of the last 5 cam swaps we did, we ended up having to pull the heads to replace lifters.
I talked to Jerry Cantrell at Schneider Cams and he's blaming this new EPA compliant oil. He told me it doesnt have zinc, phosphorus and other chemicals that help aid in high-pressure lubrication. Does this sound right ot anybody? Is something happening when the lifters are disturbed during a cam swap?
I talked to Jerry Cantrell at Schneider Cams and he's blaming this new EPA compliant oil. He told me it doesnt have zinc, phosphorus and other chemicals that help aid in high-pressure lubrication. Does this sound right ot anybody? Is something happening when the lifters are disturbed during a cam swap?
05-10-2007, 03:19 PM
#2
Pull the heads to swap lifters---leads me to believe you're talking about LS1's which have roller lifters.
I have heard a lot in the past five years about the oil problem. It's usually flat tappet lifters that have problems, I have had a few new ones go bad with a new cam but not since using diesel oil like Rotella T and GM EOS.
Since there haven't been factory produced flat tappet engines coming out in around 20 years the EPA hasn't considered it much of a problem I guess.
I have heard a lot in the past five years about the oil problem. It's usually flat tappet lifters that have problems, I have had a few new ones go bad with a new cam but not since using diesel oil like Rotella T and GM EOS.
Since there haven't been factory produced flat tappet engines coming out in around 20 years the EPA hasn't considered it much of a problem I guess.
05-11-2007, 12:28 PM
#3
Moved from Advanced Tech. More eyes in here.
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2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2018 Cadillac Escalade 6.2L A10 Pat G tuned.
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2018 Cadillac Escalade 6.2L A10 Pat G tuned.
LS1,LS2,LS3,LS7,LT1 Custom Camshaft Specialist For custom camshaft help press here.
Custom LSX tuning in person or via email press here.
05-11-2007, 12:55 PM
#5
TECH Senior Member
Well on high lift cams, the lifter tends to go down further into its bore, that could reduce its oiling capability.
also year and block design has a big influence on that.
Morel/Comp/cadillac did a study on that and created lifters that cater to this change.
I always recommend changing lifters on anything over 50k miles, the fact that heads need to come off is the main reason poeple shy away from it.
also year and block design has a big influence on that.
Morel/Comp/cadillac did a study on that and created lifters that cater to this change.
I always recommend changing lifters on anything over 50k miles, the fact that heads need to come off is the main reason poeple shy away from it.
05-11-2007, 01:18 PM
#7
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Originally Posted by PREDATOR-Z
Well on high lift cams, the lifter tends to go down further into its bore, that could reduce its oiling capability.
also year and block design has a big influence on that.
Morel/Comp/cadillac did a study on that and created lifters that cater to this change.
I always recommend changing lifters on anything over 50k miles, the fact that heads need to come off is the main reason poeple shy away from it.
also year and block design has a big influence on that.
Morel/Comp/cadillac did a study on that and created lifters that cater to this change.
I always recommend changing lifters on anything over 50k miles, the fact that heads need to come off is the main reason poeple shy away from it.
The new LS1 lifters from Crane Cams are designed to cure this. Check them out.
http://www.cranecams.com/?show=newProduct&id=13
