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how much spring pressure can my cam take?
I am running a comp cams 12-242-2 hydraulic flat tappet cam, and need too know how much pressure they can take before sadness and badness occurs. My springs have about 145lbs seat pressure and 343lbs open pressure.
5 Answers
- Shaun H-ALv 79 years agoFavourite answer
That is excessive pressure. 110-120 seat and 300-315 open. Must break it in with a dedicated break in oil or sadness and badness will happen within the first couple of minutes.
Source(s): Camshaft design/manufacture, full competition race engine building/development, internal engine failure analysis, carburetor blueprinting, drive-ability/MPG/durability expert, super-tuner. - 9 years ago
According to comp the max pressure you can run with this cam is132lbs/293lbs. That is the dual spring for this cam part#986-16. The single spring is part#981-16 and is 105lbs/273lbs. The springs you have sound like they are for a solid flat tappet or a mild roller cam. The way oils are nowadays you will wipe the lobes in no time. A buddy of mine went through 2 xtreme 294s before adding an oil additive with zinc for break in then it was smooth sailing. Good luck on build.
- chevyraceman_383Lv 79 years ago
Thats a pretty mild cam. 145# is way too much seat pressure on that cam.
I wouldnt run over 120# seat and up to 375# open. That would be MAX.
The correct springs would be in the 110-115# seat range and 300-340# open
- ?Lv 79 years ago
Definitely too much spring pressure. Why don't you do the obvious and call Comp Cams and get their informed recommendation? After all, they manufacture and sell the cam. The pressure also depends on spring installed height just in case you didn't realize that.
