Listers,
We faced the same question recently, complicated by the fact that the cam
sprocket couldn't be slid onto the camshaft with the damper in
place--possibly the groove in the new sprocket wasn't deep enough, or the
new damper too fat? (The old one had totally disintegrated, so there was no
way of comparing anything.)
My earlier query to this list provided one response that the 4-cyl. race
cars didn't use the damper, so my mechanic suggested leaving it off. (He's
had much experience with old Chevy engines--which is essentially what the
100 is--and says that since they never had such a damper, he feels that
running without it would be OK.)
As there were no "don't do it!" responses to the racing-engines remark on
this list, I agreed to go along with his suggestion. It will be some time
before the engine is test-run (small matters of repairing the sump and
rebuilding the carbs...), so if there's anyone out there who feels strongly
about running a 100 engine w/o the rubber damper, speak now!
Sarah Carr
BN1 in PA
----- Original Message -----
From: "Bluechipracing" <bluechipracing@snet.net>
To: <Healeys@autox.team.net>
Sent: Thursday, November 09, 2006 9:42 AM
Subject: Timing chain damper on 100
> When I reassemble my BN2 engine should I leave out the timing chain
> damper?.
> Unlike the 6 cyl, its just a rubber "O ring" that fits around the cam gear
> between the two cam sprockets. I had heard that they disentegrate over
> time
> and end up contaminating the lube system, so I have purposely left it out
> of
> the race engine, but on this road engine, I would like it to run smooth
> and
> quiet.
>
> 100 listers, What is your experience / opinion?
>
> Jim Smith
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