Taco plate leak - Need you help / inside, Did you have the same issue?? Options

[draganc]

Hi everybody,

I’m having a leak issue at the taco place and was wondering if you have some advice or experienced similar issue.

It appears that the plate leaks only in one area – see picture. The engine has been sitting on my work bench for a few months after rebuild, hence is leaking even at cold temp.

- I checked the plate on a mirror and it appears to be flat and the overall condition looks very good – no nicks nor bents or scratches at the sealing surface.
- New o-ring and copper washer have been installed.
- The M6x10 hex screws have been tighten to spec.
- The crank opening measures 84.2mm, the taco plate’s o-ring surface measures 76mm and the o-ring is 4mm thick.

It takes only a little bit of force to put the plate in place with mounted o-ring and it appears that plate is already touching the crank-case w/o torquing down the screws.

Any ideas or suggestions?

Thanks,
Dragan

[ChrisFoley]

I checked a taco plate with sender and it measured 76.9mm diameter at the seal surface. Thats quite a bit bigger than 76mm. Maybe there is something wrong with your taco plate and a new one would cure the leak. They have always fit tightly for me.
Anyone else have a measurement?