7 replies to this topic

[basinhead]

Hi,

I'd like to change the cam bearings as there's deepish scratch on one of them. I'm sure it's easy enough to remove the old ones but is easy to fit new ones without taking the block to a garage?
Do they need to be pressed in?

I've not changed cam bearings before so I want to make sure it gets done right first time.

Cheers,

Rich

[the.stroker]

Topic moved

[SolarB]

Old bearings are pressed out - you can remove them.
New bearings are pressed in - you may be able to do this with a suitable drift.
New bearings are then reamed or scraped to size - you can't do this.

I'm afraid the only way to do it properly is to take the block to a machine shop.

[Southy]

The latest type of cam bearings are already finished to size and just require fitting with a cam bearing tool which keeps it straight with the rest of the bearings whilst being fitted.

[Shifty]

This is one of those things that I wouldn't like to do myself.

Its way to easy to screw up and then wipe out your cam and engine.

A decent machine shop should supply and fit for about £50, thats not a lot of money in the scheme of things.

[basinhead]

Thanks for that.

I'll err on the side of caution and get it done properly. I can just imagine getting the alignment the tinyiest bit out and getting into a right pickle.
I can lug the block to the boot of my car now its stripped. How can something so small be so heavy.

Can anyone recommend a good machine shop around Kidderminster, Wolverhampton, Birmingham area?

Cheers for the help,

Rich

[Shifty]

Its bit further out for you but I use Billcar engineering in Shrewsbury.

Theres gonna be loads closer though.

[samsfern]

i made myself a tool to pull them out and in myself, using some bits i machined up on a lathe, a long threaded rod, tightend some nuts to pull them out and in, etc, works fine. but unless you plan on changing them often on engines, its not worth the time to make a tool up, take it to a machine shop.

Edited by samsfern, 03 September 2010 - 09:46 PM.