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Re: Building a 10,000 rpm NA engine.
Quote:
Originally Posted by RallyBob
With Jack's EG33 (and Frank's for that matter), the large lobes on the camshafts required all sorts of grinding adjacent to the buckets, and even the underside of the rocker covers needed grinding to clear the lobes.
Frank told me that on the later cam designs he ran he had to have the base circle diameter reduced as he was at about .550" (13.97 mm) valve lift. Jack's engine only has .460" (exh) lift max, and we still needed a bunch of clearancing.
A bigger bucket diameter would have alleviated the first problem anyway....
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YT should chime in here about all the fun (  ) he had converting Dan's engine to solid buckets and figuring out the right thickness shims to use for each bucket. I believe he also had to work on the underside of the rocker covers.
Bill
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'92 Fully caged, 5 speed, waiting for its fully built EG33
'92 "Test Mule", 4:44 Auto, JDM 4:44 Rear Diff with Mech LSD, Tuned headers, Full one-off suspension
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