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 This is a part with a long history. The whole story
started several years ago when we built a stroker motor with a roller cam. We
tried several different solutions to set the end play or thrust adjustment on
the camshaft, but nothing worked very well. The best advice I could get from
any of the vendors was either, "We've never had a complaint
before", or "Just use a hammer until the end play is correct".
Needless to say I wasn't impressed.
So we fired up the machining center and started to carve our own
timing chain covers out of billet aluminum.
While we were at it, we included a removable stainless steel center which is
sealed by double o-rings. This removable center allows a person to inspect
the cam drive and adjust it if they are using an adjustable top gear. With
the cover in place the roller button on the cam nose has a firm place to set
end play from.
We have been running these timing chain covers for many years now and they
are rock solid. The rail is about 0.500 inches thick and it really seals up
the front of the motor. The front of the cover is machined to accept the
factory oil seal, as well as the oil slinger. An adjustable TDC pointer is
included. This cover fits under the MP aluminum water pump housing as well as
a Meziere electric pump, but a factory cast iron
housing might require some clearancing.
The snout around the front seal on this cover is 3.600 inches in diameter
which is larger than the stock cover. Therefore, not all aftermarket
dampers will fit this cover. We know that ATI and Fluidamper
dampers fit, as do the stock type dampers. Also, the BHJ dampers fit.
We were notified by a customer that his TCI Rattler damper did not fit
this cover.
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