[AlfonsoR]

Have a few questions for my first engine rebuild for my 89 Carrera 3.2, ~100,000 miles, I am going through a rebuild because I am finding small aluminum bits in the oil. I have not dropped the engine yet, so...

1. should i replace the tensioners? These puppies are 363 each. Do I really need new? I am planning on replacing chains, ramps, idlers and sprockets.

2. oil lines. There are a few lines in the oil circuit with rubber as part of the line. Again, is it recommended to replace these? The line going from engine block oil pressure line to oil tank is leaking at the fitting. It's not available through our host, so was planning on sending it to Amazon hose, unless there is another fix.

3. the PO had the heads rebuilt by a non-porsche shop. They replaced a few exh valves and all of the valve guides, that was roughly 10k miles ago. I dropped the exhaust and noticed the number 5 exhaust has a bit of an oil film. Would a quality Porsche head shop be able to tell if the guides are of decent quality or is it better to bite the bullet, and have them all replaced? I know, I know, it might be the rings too.

4. again regarding the heads, with 100k miles, would replacing all the exhaust valves make sense? I have seen some people comment that they do this as a rule. What is recommended here?


Thanks,
Alfonso