TC Tappet cover gasket

[Charles Hill]

I got my '49 TC back together again after replacing the clutch. Everything works fine. The clutch works better than it ever did before. I now suspect it was bad when I bought the car. I don't have any other TC driving experience to compare so I didn't know. It now has a much lighter pedal and the whole "feel" is much better. While everything was out, I decided to fix a few other things. I took of the cast aftermarket valve and tappet covers and put on the original stamped steel pieces. I have a question about installing the tappet cover. The gasket I bought from MOSS is the same as the one that was on the car. The gasket covers the whole area of the tappet galley with 4 vent holes. The only problem is that it seems like the gasket blocks off the road vent tube. It seems to me that if the road vent tube is restricted, crankcase pressure would be able to build up and agrivate any existing oil leak problems. Should I cut the gasket to clear the vent tube? I would appreciate any comments/suggestions. Regards, Charles Hill

[Chip Old]

On Wed, 17 Oct 2001, Charles Hill wrote:

> While everything was out, I decided to fix a few other things. I took > of the cast aftermarket valve and tappet covers and put on the > original stamped steel pieces. I have a question about installing the > tappet cover. The gasket I bought from MOSS is the same as the one > that was on the car. The gasket covers the whole area of the tappet > galley with 4 vent holes. The only problem is that it seems like the > gasket blocks off the road vent tube. It seems to me that if the road > vent tube is restricted, crankcase pressure would be able to build up > and agrivate any existing oil leak problems. Should I cut the gasket > to clear the vent tube? I would appreciate any comments/suggestions.

Use the gasket as is. It acts as a baffle between the tappet chamber and the breather. Without it you'll lose oil out the breather tube at a rapid rate. -- Chip Old 1948 M.G. TC TC6710 XPAG7430 NEMGTR #2271 Cub Hill, Maryland 1962 Triumph TR4 CT3154LO CT3479E fold@bcpl.net

[Robert Grunau]

I agree with Chip. The four vent holes in the gasket allow the block to vent to the outside of the gasket and therefore indirectly to the vent tube. A small projection on inside end of the vent tube keeps the gasket from plugging the opening. A direct hole in the gasket will encouage oil leaking out the vent. Bob

On Wed, 17 Oct 2001, Charles Hill wrote: > While everything was out, I decided to fix a few other things. I took > of the cast aftermarket valve and tappet covers and put on the > original stamped steel pieces. I have a question about installing the > tappet cover. The gasket I bought from MOSS is the same as the one > that was on the car. The gasket covers the whole area of the tappet > galley with 4 vent holes. The only problem is that it seems like the > gasket blocks off the road vent tube. It seems to me that if the road > vent tube is restricted, crankcase pressure would be able to build up > and agrivate any existing oil leak problems. Should I cut the gasket > to clear the vent tube? I would appreciate any comments/suggestions. Use the gasket as is. It acts as a baffle between the tappet chamber and the breather. Without it you'll lose oil out the breather tube at a rapid rate. -- Chip Old 1948 M.G. TC TC6710 XPAG7430 NEMGTR #2271 Cub Hill, Maryland 1962 Triumph TR4 CT3154LO CT3479E fold@bcpl.net Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/