• 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

rebuilding my 1300 motor

Share this page

rikiwho123

rikiwho123

Senior Member
Offline
hi guys this is my 1st rebuild of a triumph motor and i have a few questions about it ;1st my main bearing cap bolts have an S on them and no washers i ordered new ones from canley and they came with an L on the bolts plus lock washers ; can i trust my old bolts or do i use the new ones; the S is a stronger bolt from what i have read; 2ed these thrust washers why do we have a full washer faceing the clutch but only half of one on the other side of the bearing cap ;any advice is welcome rick.
 
You're probably going to get answers split down the middle on #1. I reused my old main bearing bolts. I was buildign a street engine and I've read that the original fasteners Triumph used were good quality. I have great doubt about the quality of stuff made today. If dong anotehr engine I would probably use the ARP bolts, which are actually threaded rods with nuts in the 1296 (I think).

Sorry, but not sure I understand the second question. On Triumph engines, you only have a "half" of a thrust washer on each side of the rear main bearing. Its one of the weak points of these engines. Once they get some wear on them, the washer tends to drop out and inot the opil pan. You then get some bodacious end play on the crankshaft. If it goes on for long, the crank or block can be ruined.
 
Thanks Bill never had thrust washers on a small chevy ; my rear main bearing cap has a thrust washer pinned to it; so that would be the only space for it ;and one on the other side of the bearing cap is this right.
 
Back
Top