ok to do Top End?, rings/heads only? |
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ok to do Top End?, rings/heads only? |
tat2dphreak |
Jun 17 2003, 07:43 AM
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#1
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stoya, stoya, stoya Group: Benefactors Posts: 8,797 Joined: 6-June 03 From: Wylie, TX Member No.: 792 Region Association: Southwest Region |
ok, as you all know by now I have a burnt valve, and I think that's it.
however, I'm catching a lot of grief from people saying I should split the case, do everything!!! I understand that if I want this 1.7 to last another 100k miles I do need to do this... however, if I only need to fix what's wrong until next summer/spring... is it ok, to just do the top-end(rings/heads) now? I plan to completely rebuild next summer, or next winter(2004) at the latest, put 96mm pistons with a 71mm(or 78mm) crank, new cam...the works!!! at most I will put 1-3k miles on the engine between now and then. I hardly drive it in the winter... no heater b/c of headers... so, can you do the rings and heads without cracking the case and checking main bearings, rod bearings and everything that will be replaced in a year anyway? I just didn't want to to all of this and have to do it all again when I trick out the engine... (IMG:style_emoticons/default/confused24.gif) |
Bleyseng |
Jun 17 2003, 11:31 AM
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#2
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Aircooled Baby! Group: Members Posts: 13,035 Joined: 27-December 02 From: Seattle, Washington (for now) Member No.: 24 Region Association: Pacific Northwest |
Check the rings as follows:
Warm up engine pull all the spark plugs Do a compression test for all cylinders, record results Squirt alittle motor oil in each cylinder Redo compression test Compare results if the test in each cylinder improves alot say from 90lbs to 120lbs the rings are shot. if the test results are in the 90 to 95lbs the valves are the real problem here and re ringing is a waste of money. I don't like rebuilt heads and new rings on a old bottom end. The strain on the bearings can result in a thrown rod bearing. It's just too much to ask for high mileage bearings. (150K) I am just trying to save you time and money on a motor you will rebuild later. But you might as well have something that is not a time bomb. Geoff |
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