Engine Re-build Advise
Posted: Mon Jun 21, 2004 12:01 pm
Dear all,
I :huh: am currently overhauling and rebuilding my lotus twin cam engine for Elan S3 1968 with webers and require some feedback on what people have done and expereinced to get the best out of the engine when carrying out such work.
Mine is a 79,000 miler which has had a tough life.
The valve stems show signs of wear and there is barelt perceptable play in the guides.The seats are all polished-but not pitted.
What I want to know is:
What sort of play is permissble in respect of valve guide wear?
What signs do i look for in respect of the need to fit new valve seats-other than pitting?
With respect to the camshaft- the cams are okay in terms of minimal wear- but the bearings are lightly scored- can I get away with new bearings and fit these to the existing cams?
Is there any value in having the ports cleaned and polished?
Any other useful advise that helps me to decide on the best course of action other than as a last resort spending hundreds on unecesscary work.
Thanks in anticipation of your help and replies
I :huh: am currently overhauling and rebuilding my lotus twin cam engine for Elan S3 1968 with webers and require some feedback on what people have done and expereinced to get the best out of the engine when carrying out such work.
Mine is a 79,000 miler which has had a tough life.
The valve stems show signs of wear and there is barelt perceptable play in the guides.The seats are all polished-but not pitted.
What I want to know is:
What sort of play is permissble in respect of valve guide wear?
What signs do i look for in respect of the need to fit new valve seats-other than pitting?
With respect to the camshaft- the cams are okay in terms of minimal wear- but the bearings are lightly scored- can I get away with new bearings and fit these to the existing cams?
Is there any value in having the ports cleaned and polished?
Any other useful advise that helps me to decide on the best course of action other than as a last resort spending hundreds on unecesscary work.
Thanks in anticipation of your help and replies