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Threadloc on main bearing bolts?
Posted: Tue Mar 15, 2022 4:45 pm
by peterheywood52573
The engine on my car was rebuilt 20 years ago, 20k ago. There are no tab washers on the main bearing cap bolts. I have had to run a tap down the bolt holes, to get the bolts to drive in freely. It might be that threadloc was used on the rebuild. I wondered whether to use it on this rebuild.
Peter
Re: Threadloc on main bearing bolts?
Posted: Fri Mar 18, 2022 7:57 am
by piman
Hello Peter,
no I don't think it's necessary. Just ensure that they are at the correct torque.
Alec
Re: Threadloc on main bearing bolts?
Posted: Fri Mar 18, 2022 7:50 pm
by peterheywood52573
Hi again Alec,
In the meantime I bought new tab washers. I felt I ought to have tab washers or threadloc. I dont have a great faith in either. At least the tab washers worked in the 60s.
Peter
Re: Threadloc on main bearing bolts?
Posted: Sat Mar 19, 2022 8:34 am
by piman
Hello Peter,
yes tab washers work, although on the probably ten or so engines I've worked om I've never come across a loose main or big end fastener.
As an aside my favoured method is wire locking, easy with the right tools.
Alec