Centre Web Bearing Play?
-
- Member
- Posts: 56
- Joined: Mon Dec 17, 2018 1:49 pm
- Location: Essex UK
Centre Web Bearing Play?
Assembling my G11CS crankshaft, I am hoping to re-use the existing centre web bearings, which look reasonably ok, as does the journal. However, when fitted and torqued up correctly, I can feel a small amount of up and down movement, in all directions. I can't actually measure it now it's installed, but I checked the dimensions with a digital caliper before assembly and it all seemed to be right. Is this normal, and does it matter?
- dave16mct
- Member
- Posts: 3245
- Joined: Mon Jan 01, 1990 12:00 am
- Location: LANCASHIRE UK
Re: Centre Web Bearing Play?
Fit new shells and see if that does it. You need a good fit to maintain oil pressure to the big ends.
Dave.
Dave.
- 1608
- Member
- Posts: 2495
- Joined: Mon Oct 05, 2009 1:00 am
- Location: ESSEX UK
Re: Centre Web Bearing Play?
Agree with Dave, the centre bearing doesn't wear like the big ends and quite often ( provided the journal is not scored ) new shells will suffice.
The centre bearing is merely rotational as opposed to the big ends which take a thumping.
The centre bearing is merely rotational as opposed to the big ends which take a thumping.
-
- Member
- Posts: 56
- Joined: Mon Dec 17, 2018 1:49 pm
- Location: Essex UK
Re: Centre Web Bearing Play?
Thanks both of you. That all makes perfect sense. I was trying to save unnecessary cost, as these shells are horribly expensive, but it looks like I'll have to bite the bullet!
-
- Member
- Posts: 3533
- Joined: Sun Jan 01, 1995 12:00 am
- Location: ESSEX UK
Re: Centre Web Bearing Play?
I know a man that thought he would fit the old ones to save less than £100.00 he later had to spend many thousands have it put right.
Roy
-
- Member
- Posts: 56
- Joined: Mon Dec 17, 2018 1:49 pm
- Location: Essex UK
Re: Centre Web Bearing Play?
I'm sure you're right. It would be shame to spoil the ship for a hapeth of tar, as my dad used to say! (hapeth = half penny worth) Thanks.
-
- Member
- Posts: 56
- Joined: Mon Dec 17, 2018 1:49 pm
- Location: Essex UK
Re: Centre Web Bearing Play?
Have fitted new shells. Seems to have solved the movement problem, although I couldn't discern any difference in the measurement of the old and new shells. Fingers crossed.
- dave16mct
- Member
- Posts: 3245
- Joined: Mon Jan 01, 1990 12:00 am
- Location: LANCASHIRE UK
Re: Centre Web Bearing Play?
Good result. Thanks for updating us.
Dave.
Dave.