8 replies to this topic

[davelh]

Hi All,

 

I have developed a leak at the rear of the sump on my 355.

Currently have a rubber gasket, which seemed to seal well, but has let go at the rear main cap.

Going to rip the motor out soon to replace it, but want peoples opinion - should I stick with rubber, or go cork?

 

Cheers,

Dave

[rexy]

I have used both. I dont think it makes a difference.

[davelh]

Cheers Rexy

[LCK186]

hi as Rexy has stated, definatly use both

[yel327]

They are rubber at the ends anyway if they have cork sides? Last one I built I threw away the rubber ends and just used the cork sides with 3bond liquid gasket replacing the rubbers. It never leaked again until I sold it. I did the same on the valley cover but threw away the cork ends and replaced it with liquid gasket.

[Rockoz]

Never done it with the sump gasket, but lots of valley gaskets.

First time I did it I used Wurth Hi Temp red sealer on a 350 chev engine.

The owner of the engine in a ski boat wasnt the sharpest tool in the shed and was pulling the engine every week chasing problems he created himself mostly.

Helped him put it back together and he didnt have the valley gaskets so I convinced him to use the sealer.

No leaks on the river when we put it in the water.

We pulled the engine another 5 times before he took advice on how to cure the problems.

Have used sealer on valleys instead of gaskets ever since and have never had an issue.

Cant see why it wouldnt work on the sump ends.

I liked the Wurth product because it stuck really well, and pretty much rubbed off the surfaces easily when cleaning up.

 

Cheers

 

Rob

[Redslur]

I have gone back to using the cork and rubber end seals as I am finding too many of the rubber one's leak. People tend to tighten them from time to time and they split and leak. 

[koalasprint]

I'm using rubber. It hasn't leaked in 5 years. Well not from the sump anyway. Lots of other leaks that I have finally got on top of. One thing I did was to use a torque wrench to make sure that all of the bolts had even clamping force. It seemed very easy to over tighten one or two and the gasket would bulge out otherwise.

[redtorana#3]

Years ago I built up a 308 and used Aviation Form-a-Gasket either side of the cork and join to the rubber with great results.

Did this on the valley corks as well.