grey matter 04

iTrader: (9)

Were all these ate up cams made by Comp?
Did they all run patriot springs?
Hard to point a finger at Patriot springs when its a known fact there were some issues with comps heat treat process
So is it possible these were defective cams and just by coincedince they were run on patriot springs?
The cam really needs to be sent of to get some proof of the matter,if the cams good by comp i say we have a known spring issue

1FastBrick

iTrader: (17)

Yes all of the cams were from Comp Cams!

The Main problem is Comp Cams opted for the less expensive cam core blanks that are maid from softer material to begin with. Some of them had heat treat issues but in the end it all came down to the Material. While it would have worked fine on small cams it does not hold up on high lift cams with the extra spring pressures.

1FastBrick

iTrader: (17)

Comp Cams does not heat treat the cams. The Cam Blanks are Heat treated first and then ground to spec.

1slow01Z71

iTrader: (36)

There may be some truth to the whole comp thing, either way all the ones Ive seen and many others with cam problems were using the patriot spings. Maybe since the patriot springs are stouter than a lot of the beehives it just exacerbated the soft cams sold by comp. Both of the cams Im talking about are about 3 years old.

FWIW Ill be pulling my gt2-3 cam in a couple months and by that time I expect it to have 4kish on it in my setup so I guess Ill see what it looks like. Anyone know who grinds lingenfelters cams?

1FastBrick

iTrader: (17)

Yup As I said the Extra spring pressures under load didn't help. But unfortunitly They tried to save about $20 a cam by opting for a less expensive core and this is what happened. Softer material and poor heat treating. I have a cam from them that only has dyno time on it. Guess what, its a paper weight IMO. You can see the wear marks on the cam from the liffters. It's Definitly a soft cam. When you hold that core up to a known quality core you can Physically see the difference in material i.e. color and texture not to mention the surface hardness when you pick at it.

MikeGyver

iTrader: (5)

Mine were an Comp. The springs are unnamed duals, supplied with the AFR complete heads. They are 120 pounds closed, 420 open.

CashDudeHomie

iTrader: (5)

Well, I tore the heads off and I was starting to get worried until I pulled the final pair of lifters-- from my good friend #7 The wheel has a flat spot on it. It almost certainly locked up because a flake of metal from the cam went under it.



The other ones all look like sh*t as you would expect, but this one was the first to take severe damage. Cam bearings look good so I'll put new lifters/trays/cam/pushrods and see what happens. Probably have it back up in 2 or 3 weeks.

budhayes3

iTrader: (19)

Cool deal man, glad to see that it's moving along

CashDudeHomie

iTrader: (5)

I can't find it right now, but the other day on another LS1 site, I read that Comp now uses billet steel on all of their cams, and no longer uses cast iron. Does anyone know if this is true?

1FastBrick

iTrader: (17)

I believe it was grey Iron and now its something like nodular. All cam Blanks are cast. Billet cam cores are custom made and cost a few hundred.