Hey - did you know if you click on the title of a thread it will take you to the first unread post since you last visited that thread?
but were afraid to ask: 
STOP!! Never post your email address in open forums. Bots can "harvest" your email! If you must share your email use a Private Message or use the 
smilie in place of the real @
Pretty Please - add it to our Events forum(s) and add to the calendar! >> 
001macdonald
Freshman Member
Offline
-
Hey Guest!
British Car Forum has been supporting enthusiasts for over 25 years by providing a great place to share our love for British cars. You can support our efforts by upgrading your membership for less than the dues of most car clubs. There are some perks with a member upgrade!**Upgrade Now**
(PS: Upgraded members don't see this banner, nor will you see the Google ads that appear on the site.)
-
When posting a classified ad, you MUST select a prefix from the drop-down next to the subject line. If you don't you will get an error and your ad will not be posted!
Open hole on Transmission
- Thread starter 001macdonald
- Start date
Share this page
OP
001macdonald
Freshman Member
Offline
What is this opening and should it have a plug or bolt in it? It's just to the rear of the master clutch arm on the bottom.
Gerard
Luke Skywalker
Offline
Do not plug it, it's a drain hole for any oil or water that gets into the bell housing. Normally it has a cotter pin, also known as a jiggle pin, to keep the hole from becoming plugged.
OP
001macdonald
Freshman Member
Offline
thanks for the info...Glad I didn't plug it. I had just finished topping up the transmission with Max-Life Oil (20-50) and noticed dripping from the hole. Is it possible to overfill the transmission?
Gerard
Luke Skywalker
Offline
If you are filling from the filler plug on the gearbox, it's not possible to overfill unless you did it with the nose up. It is possible for the front cover to leak. There is a bolt on cover. if it's loose or if your scroll seal is badly worn, you will lose oil from the front. Front covers are now available with a true lip seal, but you also need to check the input shaft for wear also. A Speedi-Sleeve can be used to restore the surface.
David_Doan
Jedi Warrior
Offline
Are the new front covers for the ribcase only, or will they also fit on the smoothcase?
Gerard
Luke Skywalker
Offline
I've only been able to find the ones for the rib case. To the best of my knowledge, those are the only ones made. The cover will bolt up to a smooth case, but the fork and hence the pivot point on both the cover and fork are different.
David_Doan
Jedi Warrior
Offline
That's what I thought. My car has a decent 948 and a wore out smoothcase. I don't want to invest in rebuilding it, but not leaking would be nice in the short term.
Long term is a 1275 or a Japanese motor with ribcase or 5 speed.
Long term is a 1275 or a Japanese motor with ribcase or 5 speed.
David_Doan
Jedi Warrior
Offline
So if the front seal is worn, how much lower is the input shaft than the fill hole? Safe to run it at that level?
Gerard
Luke Skywalker
Offline
The scroll seal is not designed to hold back oil when stationary, so even a full gearbox would not leak from the shaft. If the cover gasket is compromised or the nuts were loose, then yes, almost any level is going to cause a drip into the bell housing. The issue is oil accumulating or leaking while the shaft is spinning.