E: Engine Cometic timing cover gasket and quill clearance

[Bill Cannon]

As far as I know, they are available individually, although I don't have a price list. I ordered a twin set and 2 additional timing cover gaskets.

One twin kit- $52.46 ea.​

ET106 X 2 @ $13.74 ea.=$27.48​

Padded envelope $2.29​

First class postage $4.45​

Total $86.68​

A few months ago I ordered just timing cover gasket, minimum order was 10. All spares now sold on to Timetraveller. Bill

 

[Rob H]

Concerned about the oil seals, I have fitted new rubber seals and have a fitted a cometic gasket. There does not seem any resistance to the seals when fitting the timing cover. I bolted it down and left a week then removed. only two of the seals show the imprints of the nuts the other two no signs of contact. Without the gasket I can feel the resistance of the rubbers when locating the cover by hand. I am guessing that the fit to the seals is marginal at best. Questions I have are:

Does the seal have to be tight to withstand the oil pressure to the cams?
Any trick to check if the seal pressure or contact is adequate or not?
What about installing shims under the nuts to raise their heights a little to get a better seal?

Rob

 

[A_HRD]

Rob,
There are various things you could try:
1. Put a shim/washer under the nut - as you say (check if the 'nylon' is still locking).
2. Put a fibre washer under the seal.
3. Use a 499 5/16 BSF Nyloc wheel hub nut. Turn it down (or file) so that it is 15-20 thou longer than your current nut. (Check if the 'nylon' is still locking).

I'm sure others will add to the list...

Peter B

 

[Martyn Goodwin]

Concerned about the oil seals, I have fitted new rubber seals and have a fitted a cometic gasket. There does not seem any resistance to the seals when fitting the timing cover. I bolted it down and left a week then removed. only two of the seals show the imprints of the nuts the other two no signs of contact. Without the gasket I can feel the resistance of the rubbers when locating the cover by hand. I am guessing that the fit to the seals is marginal at best. Questions I have are:

Does the seal have to be tight to withstand the oil pressure to the cams?
Any trick to check if the seal pressure or contact is adequate or not?
What about installing shims under the nuts to raise their heights a little to get a better seal?

Rob

Remember - the oil 'pressure' is at most 10 psi at peak revs, more like 3 to 5 psi at cruze speeds

 

[bmetcalf]

Do you have restrictor discs under the seals?

 

[greg brillus]

Panic not.......Just install a 1 mm thick 5/16 ID washer under each nut, try one seal at a time starting from the rear and moving forward, you should be able to feel the rubber washer holding the cover off by a mm not more, you do not want to crush the washers. After you have tried each one and are happy then refit all four and the cover can be installed. No Problemo...............

 

[Rob H]

Do you have restrictor discs under the seals?

Don't think so but not sure what these are. There does not appear to be anything fitted under the seals just the recess and the small hole for the oil

 

[Rob H]

For info, just noted in the MPH that the cometic timing gasket can now be obtained in a thinner .018" version