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It is highly recommended with any new spring to heat cycle them to help with the temper of the spring. Just bring the engine to temp and then let it cool down completely. Do this a few times and you're all set to go. I cycled mine 3 times to be on the safe side.
Re: Do new spings need breaking time? (BlueBlazer)
why did you change to the Iskey's? and was the valvetrain quieter than your REV's with them?
:lurk: Which spring compressor tool did you use? Are they dual springs? Any machining to the spring seats required for these? What was the install height?
Mike,
Sorry to break off topic. but why did you change to the Iskey's? and was the valvetrain quieter than your REV's with them?
I believe he broke 2 REV's within a month or so. So he changed them out. :cheers:
:withstupid:
I replaced with Isky Double springs and using a really cool valve compressor tool that only costed 30$. Check my other post for that tool.
Well, it is still as noisy as REV and you need to use new seats and retainers.
Isky's are also dual and I have heard many good review about them ... people even told me that Isky warranties their spring for 10K miles up to .65 lift. Another thing was it only costed me 100$ to swap.
I don't know how much for Crane Duals.
Mike,
Why did you go with the Isky's instead of the new Crane Duals?
i would use comp cams "spring spray" on the springs so when you start the engine for the first the spring are lubed because till the oil get to them they can get very hot. i watch a dyno test were they cut off the oil supply to the springs and in less than 30 seconds the exhaust spring were glowing red. this lead to the development of the "spray bars" inside the rocker covers for NASCAR engines. the "G" forces in the turn was causing the oil not to reach the springs and cook the life out of them. this overheating no matter how small could be the cause of valve spring failure
Re: Do new spings need breaking time? (clem zahrobsky)
Clem is right but you don't have to spend money on the spray. Just get a quart of Mobil 1 (or whatever oil you are using) and pour it slowly over the rockers and springs after everything is installed. I use a small 1-pint pump oil can with a flexible spout and squirt inside the springs to be sire the valve stems 7 seals are well lubricated too (especially with new heads).