• 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!
Tips
Tips

Simple Rebuild question.......

Share this page

M

mxp01

Jedi Warrior
Country flag
Offline
I am rebuilding a 1275 and have reached the point of installing the pistons. Which is the #1 piston? Does it go in the radiator or transmission end?

Thanks,
Mike Pennell
 
#1 is closest to the radiator, but get someone to confirm this in case the method/reference is different during a rebuild.

Let us know how it comes out Mike.
 
always the radiator
 
startech47 said:
Remember there is a drivers side and a passengers side to the pistons as well.
Click to expand...
:iagree:

Don't ask me how I know
 
Do you have a Haynes or one of the shop manuals? Also, you're probably going to need a piston ring clamp. You place it around the piston to squeeze the rings in so the piston and rings can be fitted into the cylinder. Watch the bottom of your connecting rods as they go in. You don't want them scratching up your cylinder walls.
 
Yes, I do have both a Haynes manual and a ring compressor. I just got tripped up a little when the manual directed me to make sure the triangular arrow on the top of the piston is pointed toward the front of the engine. I have new pistons and I really can't distinguish an arrow on these pistons.

Also, since we are discussing the re-build, can someone tell me the p/n and a little bit about the improved rear oil seal for these engines? I bought the standard gaskets kits, but a buddy reminded me about these improved seals that really can cut down on leaking oil.

Mike Pennell
 
mxp01 said:
Yes, I do have both a Haynes manual and a ring compressor. I just got tripped up a little when the manual directed me to make sure the triangular arrow on the top of the piston is pointed toward the front of the engine. I have new pistons and I really can't distinguish an arrow on these pistons.


Mike Pennell
Click to expand...

usually stampped on top, but might be underneath or on side by pin bore. Sometimes overbore number (.020, .030, etc..) may be used as "front" mark IIRC. This going by several different manufacturers. Your results may vary.

When in doubt, call manufacturer or supplier.
 
Back
Top