Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - Rockers are hitting Retainers....??
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Old 07-01-2008, 09:25 PM
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Rockers hitting retainers

I agree with Coldknock, judging from the pics you posted the pushrods you have are too short. This is confirmed by the fact that the pics show the roller contact starting too far inboard( lifter valley side ) and moving too far to the outboard side at full lift. I would expect that with the parts you have that the correct pushrod length will fall in the 7.85"-7.90" range, and will require the use of longer rocker arm studs.
Just for future reference, Crane's recommendations would have been closer to correct if you would have had the spring pads on the heads machined deeper to allow you to achieve the desired installed height using a standard length valve, if the Sportsman II's have enough material to allow it.
Most experienced racers don't buy "matched kits" because they know that there are too many variables for a "one size fits all" kit to cover. Most mix and match parts (and brands) to fit their requirements and budget.
Don't get too hung up on everything being the same brand.

Last edited by ericnova72; 07-01-2008 at 09:26 PM. Reason: spelling
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