[Fot] Cam Bearing wear

[Don Couch]

I run a 3 quart Accusump so I don’t think that’s it. Baffled oil pan and always see 85-90 psi 
Not saying that it can’t be oil starvation but I just don’t think that’s it. 
Dennis had me running some pretty heavy springs. I will get with him and find out the seat pressures. But I’d think that would wear all four cam bearings if that was what it was.
He mentioned maybe too tight a timing chain. 
But don’t know if that’s possible with the kind of tensioner the Spitfire has.


Sent from my iPhone

> On Sep 6, 2018, at 9:03 PM, Greg Blake <gblake58tr3 at icloud.com> wrote:
> 
> Don,
> 
> Any chance you had a low oil pressure condition on startup or on track. 
> 
> Sent from my iPhone
> 
>> On Sep 6, 2018, at 11:34 AM, Rick Parent via Fot <fot at autox.team.net> wrote:
>> 
>> I've had every other problem but not that one, what is the open and closed pressures?
>> 
>> Rick
>> 
>> 
>> On Thursday, September 6, 2018 12:28 PM, don--- via Fot <fot at autox.team.net> wrote:
>> 
>> 
>> All, 
>> I have a 1296cc Spitfire motor with maybe 25 hours on it.
>> 2 race weekends for sure and some tuning hours.
>> Anyway, for other reasons I had to tear it down and I noticed
>> the fresh cam bearings had grooves worn on the six o’clock area. 
>> 
>> Seems a bit of premature wear to me. 
>> What might cause this?
>> Spring Pressures too high?
>> 
>> Thanks in advance, 
>> Don
>> 
>> 
>> 
>> DON COUCH PHOTOGRAPHY
>> www.dcphotos.com
>> (512)-680-3540
>> 
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