4 replies to this topic

[ClassicAlex]

Hi everyone,

I am in the process of rebuilding my A+ 1275cc engine again, after fuel went into the oil after a mechanical fuel pump failure! I bought a new camshaft from Wood and Pickett 5 years ago during the last rebuild and I am unable to find out what the brand is in order to be able determine what the specified timing is for this cam..

According to the original invoice it is a WPA266 Camshaft Fast Road 1275 266 profile new, but no indication what brand i.e. Kent...

The reason for asking is because I want to find out what the specified timing was for this cam.. I did time the cam 5 years ago when i rebuilt the engine but forgot what the timing was and the machine shop lost the woodruff key when the engine went in for crankshaft polishing and cylinders re-honing so I can't work out what it was and need to order a new woodruff key (ordered a few keys with a variation of offsets as well as a STD one for a benchmark)

I know with the Kent 266 cam, it is timed to 106 degrees and was wondering if this also applies to my 266 cam as well?

Hope this makes sense!

Many thanks!

Edited by ClassicAlex, 19 April 2021 - 01:22 PM.

[ClassicAlex]

This is the cam in question 

Attached Files

•  IMG_0549.jpg   31.55K   6 downloads

Edited by ClassicAlex, 19 April 2021 - 01:39 PM.

[Cooperman]

Unless it is a race engine, I would set it at 106 degrees with a new chain. It will certainly run fine at that.

I don't recognise the part number and your alternatives are to measure the cam profile accurately to determine the ideal figure, or just set it at a nominal figure and try it. 

Consider that most people just set the cam on the dot-to-dot basis and then the actual cam timing can vary from the ideal by several degrees either way depending on component tolerances.

[ClassicAlex]

Thank you, after doing a deeper research into the subject throughout the forum I have also arrived to the same conclusion as well.
I ordered the uprated material cam chain from mini spares a few weeks and am going to fit it onto this engine as apparently with this material it doesn’t stretch as much as those provided as standard.. the part is 3H2127EVO.

[Cooperman]

I just fitted that chain onto a 1993 'Open Classic'. It will be interesting to see how it compares compared to earlier ones.