Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.

Topics - hugh54

Pages: [1]
Engines / Big end torque settings
« on: January 15, 2023, 06:31:22 AM »
Hi again

I looked for the torque settings for the big end nuts but there doesn't seem to be any info about it. I guess it's a matter of getting it tight enough so that the split pin fits? Does anyone have any comments on the right way to do it?


Engines / CS 3-1 big end bearings
« on: December 30, 2022, 11:20:48 PM »

I'm fitting new big end shells measuring the clearance with plastigauge, and was wondering if anyone has noticed new big end bearing shells spreading the cap fractionally making it difficult to fit the cap, particularly from underneath inside the crankcase. It was easy to fit with the old shells but with the new ones the cap goes as far as the shank of the bolt where the thread stops and then has to be tapped on to go any further. It makes it difficult when testing for clearance with a plastigauge. I would have to tap the bolts out to get it off.

It seems that the spread of the bearing spreads the cap a fraction.

Might have to try a bit of wet and dry on the bolts to polish them a bit perhaps.


Engines / CS 3-1 blows blue smoke
« on: December 23, 2022, 10:07:22 PM »
Hi, Perhaps someone has some ideas from their experience with Listers.
I have a CS 3-1 that blows blue smoke and accumulates oil in the exhaust port which drips from the exhaust pipe. It's not being used to power anything and has no load when running.
The previous owner overhauled it with new mains, big end, rings and valves. In an effort to find out why it blows smoke I have pulled the head and barrel, and the rod to check the big end. The rings are good with the correct ring gap and ring to land clearance, bore is good and you can still see the cross hatching. Everything else looks like it's just been overhauled which, in actual hours running, in has I guess. So at a bit of a loss what to fix. I'm going to fit new rings and big end anyway.
I was wondering if anyone has any ideas. Perhaps it's blowby caused by not being run in?
Thanks in advance for any ideas.
I should have mentioned that the valve guides are good, no appreciable wear.

Pages: [1]