Our first Isky 295D failure
09-22-2004, 02:33 PM
#1
Our first Isky 295D failure #5 intake springs broke in multiple locations and also destroyed the fulcrum on the rocker. Good news is, no leaking, so the valve is fine. We will likely replace these with Manley springs, seats, retainers, and locks.
Lift on the intake side for this cam is .635, and these were the "tool room gold" springs. We have abused many of them, but this is our first failure.
Lift on the intake side for this cam is .635, and these were the "tool room gold" springs. We have abused many of them, but this is our first failure.
09-22-2004, 06:41 PM
#5
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Originally Posted by Trojan T/A
How many miles on the cam? I've been looking for a spring to hold .63x-.64x lift.
09-22-2004, 06:41 PM
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Originally Posted by Reckless
We will likely replace these with Manley springs, seats, retainers, and locks.
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09-22-2004, 08:58 PM
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Originally Posted by Reckless
#5 intake springs broke in multiple locations and also destroyed the fulcrum on the rocker. Good news is, no leaking, so the valve is fine. We will likely replace these with Manley springs, seats, retainers, and locks.
Lift on the intake side for this cam is .635, and these were the "tool room gold" springs. We have abused many of them, but this is our first failure.
Lift on the intake side for this cam is .635, and these were the "tool room gold" springs. We have abused many of them, but this is our first failure.
0 passes at the track
09-22-2004, 10:48 PM
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From everything I've read, that spring held up well. Everyone always says to swap at a 10k-15k interval on a high lift, fast ramp cam. Do you think the Patriots or Manleys will last longer?
09-22-2004, 11:27 PM
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I think the Patriots will last longer. I was told by tsp that with my cam i should see 30-35k out of them, but I that I should check them around 15k. Sounds good to me! Note, I told them my car won't see much track use, so if you go to the track often, the life will be shortened.
09-23-2004, 12:16 PM
#11
The heads were of the car just a few weeks ago and the valve springs were checked out be our head porter. He was happy to report the springs had only lost about 5 pounds of pressure. Guess that was 5 pounds too much 
Sorry to hear about the car Dean. You back from the sandbox now I presume?
Sorry to hear about the car Dean. You back from the sandbox now I presume?
09-23-2004, 12:23 PM
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Originally Posted by Reckless
The heads were of the car just a few weeks ago and the valve springs were checked out be our head porter. He was happy to report the springs had only lost about 5 pounds of pressure. Guess that was 5 pounds too much
Sorry to hear about the car Dean. You back from the sandbox now I presume?
Sorry to hear about the car Dean. You back from the sandbox now I presume?
09-27-2004, 09:16 PM
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Me too,had one cut through a COMP retainer and drop a valve, so I replaced them all, ISKY locks,seats,and retainers too and after 13000 relatively easy miles one broke and another was about to go,valve kissed a piston but not bad.I was so pissed I sold the heads and got AFRs w/patriot double golds.We shall see.
09-28-2004, 07:34 AM
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Originally Posted by kumar75150
about 15-20k of which there were prolly about 100 race passes
Id say they held up well knowing Kumars driving 
Mike
09-28-2004, 07:36 AM
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Originally Posted by luv2spd
I think the Patriots will last longer. I was told by tsp that with my cam i should see 30-35k out of them, but I that I should check them around 15k. Sounds good to me! Note, I told them my car won't see much track use, so if you go to the track often, the life will be shortened.
Mike
