• 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.)
Tips
Tips

TR2/3/3A Just started burning some oil...

Share this page

HighAltitudeTR3

HighAltitudeTR3

Jedi Trainee
Country flag
Offline
Help - Moss Rockershaft Oil Feed Line [PN: 821-350]

Hello! So I just got home from a beautiful evening cruise and as I pulled in to my garage I noticed a puff of smoke (oil). I just double checked and it seems it's only on acceration, and at the early side of accelerating. Typically, I would assume that a valve seal or maybe a gasket is going (car just started running after 30 years!) but I also just put A rocket shaft oil feed line from Moss that connect the bottom of the engine to the top, bringing oil to the top easier. (Part number: 821-350)

Has anyone else had the issue where it might burn a little oil from this? I'm not burning enough to freak out, but would like to know if I should be thinking about seals... :/
 
Last edited:
I guess I don't actually have valve seals. Could be a leaky valve?
 
The extra oil bypass sends way to much oil to the top of the engine especially in addition to the regular flow. I have a engine that has a blockage somewhere below the rocker shaft. So I put on one of these bypass oil lines. Even with only that bypass I was getting to much oil to the head. To cure it I welded the office closed and drilled it out with a very small drill. I recall that it was less than 1/16".
Charley
 
It seems like a lot of oil, but it's strange that Moss swears by them. I almost feel like adding more oil with the regulator will fix it, sort of evening the pressure between the top and bottom. I will add a qt (I'm half a qt low) and see if that helps.
 
The original (60's ?) bypass had a restricter in it . I added this bypass & also started to smoke . Removed it after a day , all is well again .
 
I've heard several times over the years that those extra oil lines are not needed and troublesome (as you found out). I'd remove it.
 
I took the rockershaft line off and it stopped. Waiting on Moss to give me the A-ok for a return. Was on for all of 20 mins...
 
I would say they do as much good as adding a half quart of oil. Waste of money. I hope they let me return it, I have so many other parts to buy. ;)
 
Back
Top