[Fot] Mystery cam

[Chuck Arnold and/or Kathleen Kelley]

Almost identical to the babe erson 300M that came with my PI TR6. It has
.333 lobe lift, 300 total duration, 104 lobe center angle, 104 intake
separation and 113 exhaust.
On Jun 14, 2016 4:22 PM, "Bill Babcock" <ponobill at gmail.com> wrote:

> I set it up like a Tiltech 298DX and got:
> Intake
> 45 BTC
> 71 ABC
> Exhaust
> 82 ABC
> 35 ATC
>
> Intake duration = 296
> Exhaust duration 297
> Intake lobe center 103 ADC
> Exhaust LC 113.5 BTC
> Lobe sep 108.3
> Overlap 80
>
> Still doesn’t look quite right.
>
>
> > On Jun 14, 2016, at 10:46 AM, Bill Babcock <ponobill at gmail.com> wrote:
> >
> > Searching around on the web, it kind of looks like a TilTech 298Dx, but
> I don’t recall buying a cam from Larry and Tony Garmey doesn’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 at gmail.com> wrote:
> >>
> >> Oh, and the lift is .372
> >>
> >>
> >>> On Jun 14, 2016, at 10:11 AM, Bill Babcock <ponobill at gmail.com> wrote:
> >>>
> >>> I’m building a new motor for Peyote from the bits of it’s previous
> engine. I discovered the front main bearing cap was cracked in half when I
> decided to freshen the motor. I’ll work on replacing the cap later—maybe
> get a billet one made, but in the meantime I’ve run into a minor problem. I
> don’t know for sure what cam I have or how it should be set.  Tony Garmey
> says it’s a BFE cam, but I can’t find any specs for those and can’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 0.033” as the open/close height which is .050/1.45 which as
> I recall is the ratio of the stock rockers”
> >>> Intake open .033 @ 36 BTC
> >>> Intaake close .033” @ 76 ABC
> >>> Exhaust open .033” @ 76 ABC
> >>> Exhaust close .033” @ 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 isn’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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