Hi, I am new to this forum i have posted a small introduction about my self. I have at my disposal a Rover 3.9 engine which has been stripped down so it is as naked as a jay bird. I am now at the stage where i am starting to collate a list of parts that need replacing and the price of doing so. I have noticed that there is slight wear on the camshaft itself. Would it be worth changing the camshaft bearings,whilst the engine is in this state. I have had a good look at them,there does not seem to be any imperfections that I can see. Someone suggested that they cannot be replaced,and a new block would be needed? I will be replacing the camshaft itself along with the tappets. My way of thinking is if I am going to go to this trouble,then would it be wise to change the bearings as a matter of course.
Thank you
MadMonk
camshaft bearings replacement
Moderator: phpBB2 - Administrators
Re: camshaft bearings replacement
It's pretty easy to change the bearings, but you do need to have the necessary special tool to allow you to draw them out. And all 5 are different sizes!
You can download a sketch of the special tool here:
http://www.cowdery.org.uk/downloads/V8-Cam-brg-tool.pdf
If you have a friendly machinist, he can knock one up.
Just be careful to draw them squarely into the block.
I always do it as a matter of course. And just ensure the oilways line up.
Chris.
You can download a sketch of the special tool here:
http://www.cowdery.org.uk/downloads/V8-Cam-brg-tool.pdf
If you have a friendly machinist, he can knock one up.
Just be careful to draw them squarely into the block.
I always do it as a matter of course. And just ensure the oilways line up.
Chris.
--
Series IIA 4.6 V8
R/R P38 4.6 V8
R/R L405 4.4 SDV8
Series IIA 4.6 V8
R/R P38 4.6 V8
R/R L405 4.4 SDV8
Re: camshaft bearings replacement
Thank you Chris, i have d/l the sketch and will have a word with a machine shop
Regards
Mark
Regards
Mark
Re: camshaft bearings replacement
Not sure if it's on the drawing or not, but mine are all tapped M10 and I use a long piece of studding to draw the bearings into place.
Chris.
Chris.
--
Series IIA 4.6 V8
R/R P38 4.6 V8
R/R L405 4.4 SDV8
Series IIA 4.6 V8
R/R P38 4.6 V8
R/R L405 4.4 SDV8
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stevieturbo
- Forum Contributor
- Posts: 3979
- Joined: Sat Nov 18, 2006 6:22 pm
- Location: Northern Ireland
Re: camshaft bearings replacement
You can get various tools
https://www.summitracing.com/int/search ... al%20Tools
One of many videos
I would NOT try and install bearings without some sort of alignment tool too. And a tool to draw the bearings into place with threaded rod would give you more control....although I would aim more for like M16-20mm threaded rod, than M10.
I tried M12 on my LS a few years back and it didnt stand a chance. Far too small.
Although I did recently use one of the hammer tools as per the video and it was very easy and effective.
https://www.summitracing.com/int/search ... al%20Tools
One of many videos
I would NOT try and install bearings without some sort of alignment tool too. And a tool to draw the bearings into place with threaded rod would give you more control....although I would aim more for like M16-20mm threaded rod, than M10.
I tried M12 on my LS a few years back and it didnt stand a chance. Far too small.
Although I did recently use one of the hammer tools as per the video and it was very easy and effective.
