Searching around on the web, it kind of looks like a TilTech 298Dx, but I
donâ??t recall buying a cam from Larry and Tony Garmey doesnâ??t think so
either. I could just set it up as if it were, but it would be good to know.
> On Jun 14, 2016, at 10:40 AM, Bill Babcock <ponobill@gmail.com> wrote:
>
> Oh, and the lift is .372
>
>
>> On Jun 14, 2016, at 10:11 AM, Bill Babcock <ponobill@gmail.com> wrote:
>>
>> Iâ??m building a new motor for Peyote from the bits of itâ??s previous
>> engine. I discovered the front main bearing cap was cracked in half when I
>> decided to freshen the motor. Iâ??ll work on replacing the cap laterâ??maybe
>> get a billet one made, but in the meantime Iâ??ve run into a minor problem.
>> I donâ??t know for sure what cam I have or how it should be set. Tony
>> Garmey says itâ??s a BFE cam, but I canâ??t find any specs for those and
>> canâ??t get ahold of Ken.
>>
>> I ballparked where I think the cam might want to be and got this for
>> measurements:
>>
>> Reading the Intake and exhaust valve movement from the spring retainers I
>> use 0.033â?? as the open/close height which is .050/1.45 which as I recall
>> is the ratio of the stock rockersâ??
>> Intake open .033 @ 36 BTC
>> Intaake close .033â?? @ 76 ABC
>> Exhaust open .033â?? @ 76 ABC
>> Exhaust close .033â?? @ 42 ATC
>>
>> By my calculations that gives:
>> Intake duration 292.0 degrees
>> Exhaust duration 298 degrees
>> Intake lobe center 110.0 ATC
>> Exhaust lobe center 107 BTC
>> Overlap 78
>> Lobe separation angle 108.5
>>
>> Pretty sure this isnâ??t exactly where it needs to be. I have a vernier
>> sprocket so I can adjust the timing precisely. My questions are:
>>
>> What cam is this?
>> Where should it be set?
>> How much advance?
>
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