Bore size for cam shaft bearings

[TRsixchris]

Thanks again all. Plenty of options now. I don't mind travelling to get a decent job so John D and Dave McD recommendations are not out of the question. However if some one more local can do it I'll look into that to. I had contacted Rob Walker but he didn't reply so maybe a phone call only company.

As far as balancing goes I have always had the parts balanced when rebuilding these engines. Never gone as far as dynamic balancing but always matched pistons, rods for wieght and statically balanced the crank.

Chris

Edited August 17, 2018 by TRsixchris

[TriumphV8]

To be honest I did the line boring by myself but was not able to keep

the new bores in limits but I had them in line.

What I had also was a diametre gauge from the cylinders

and a lathe and micrometer measurement.

 

So I drilled them all in line and made my own bushings from CuSn12,

unfortunately that material is expensive but some companies

offer tube material and one had the proper diametre.

I could go up to 52mm!

 

Here are the pictures:

 

On the machine:

 

New bearing:

 

Cam fitted:

Edited August 18, 2018 by TriumphV8

[astontr6]

To be honest I did the line boring by myself but was not able to keep

the new bores in limits but I had them in line.

What I had also was a diametre gauge from the cylinders

and a lathe and micrometer measurement.

 

So I drilled them all in line and made my own bushings from CuSn12,

unfortunately that material is expensive but some companies

offer tube material and one had the proper diametre.

I could go up to 52mm!

 

Here are the pictures:

 

On the machine:

Ausrichtung Spindel01.jpg

 

New bearing:

Spindellager Nocke01.jpg

 

Cam fitted:

Spindellager Nocke02.jpg

Hi Andreas

,

Thanks for showing that and proving that it can be done as I consider it a waste of a good block without doing this type of repair.

 

Bruce.