Valve spring installed height?
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Valve spring installed height?
I got my comp cams springs, locks and retainers to match DEH265 cam. Checking the installed height and its coming out at 1.920 inlet, and 1.885 exhaust or thereabouts. This is before the seats are cut. I have the ferrea valves.
Installed height is supposed to be 1.800, whats the best way to get back to the recommending height?
Many thanks
Jason
Installed height is supposed to be 1.800, whats the best way to get back to the recommending height?
Many thanks
Jason
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Joined: Dec 2003
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From: iowa
if you have the comp cams recommended springs they would be 972 springs, your machine shop probably has spring spacers that sit under the springs to reduce the installed hieght if I recall they come in .015, .030, .060 hieghts and can be stacked if needed also you can get offset lockes that will reduce it by .050 but I would put a .060 under the intake, and a .030 under the exhaust that would put them both pretty close to 1.850-1.86 installed hieght according to comp that puts you at 109psi seat preasure, or do that, and install .050 offset locks, and puts you almost exactly at the required installed height.
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Thanks, Thats a relief i thought i had the wrong parts, i got 972 springs and 747 retainers. im using the ferrea valves 2V sizes. i thought about using the .050 offset locks and but unsure if comp cams do -.050 [10degrees] offset locks?
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Gonna get new guides fitted hopefully monday, what should be the clearance guide to stem using ferrea valves? Just thought about the different heat transfer using stainless valves, or something like that lol.
Thanks.
jason
Thanks.
jason
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