BB Wiped Cam!
Le Mans Master
Joined: Mar 2008
Posts: 5,948
Likes: 72
From: Oxford MA-----You just lost the game!!!!
Cam break-in has always been a nervous time to go through, I remember back in '89, firing up a 440, that first 20 minutes seemed to last forever! Wiped out cams were a fact of life back then, and still are today.
Scott
Heel & Toe
Joined: Aug 2013
Posts: 23
Likes: 0
From: Bixby Oklahoma
Was helping a friend diagnose a problem.Suspected a wiped cam,sure enuff.Look what he found.He was using Mobil Delvac, oil recommended for diesel engines.This was a Comp Cam kit,he said he followed break in procedures.Cam had about 4800 miles when problem surfaced.No racing just street use.....Click on pic below for video [IMG]
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Safety Car
Joined: Jan 2009
Posts: 3,736
Likes: 56
From: anchorage ak
Enyone ever have a bad ROLLER cam, ??? I have, and to boot the engine would smooth out just fine along about 1200 rpm, but the idle at 800 rpm was ragged as a doll, BUT every once in a while the idle would smooth out and be fine.....it was very erratic in the acting up, this went on for years, ME going nutz with the injectors, HEI, computer, chips, and of course the computer looked good in all aspects....this drove me krazy, I got another stock L98 cam from a friend, and changed it out more for the economy than anything......upon pulling the ZZ9 TPIS cam out of the engine, I was shocked to see all the destruction on 1/2 the lobes, I examined the roller lifters really close, and they were perfect, smooth all over looked new.....the Cloys double roller chain was perfect too, changing the cam solved all the ragged intermittent idle problems....
so never buy anything from TPIS, they located in Chaska Minn.
I would not be too surprised to see other guys with defective lobes on roller cams too, somehow that junk gets sent out of some shops.....
the lobs looked as if the steel had delaminated or something, looked like it had pits all over, also....
so never buy anything from TPIS, they located in Chaska Minn.
I would not be too surprised to see other guys with defective lobes on roller cams too, somehow that junk gets sent out of some shops.....
the lobs looked as if the steel had delaminated or something, looked like it had pits all over, also....
