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Originally Posted by 3barboost
(Post 293347)
my guess is the battery was going a little low when they got to number 4
do the test again but this time start on number 4 I would boost it and worry later put it this way if it is "down" you can lean all about tuning and so on on an engine that is not perfect - so if it blows up you were already "expecting" and budgeting for it the next engine will be even more awesome think of the internals you can add for the "surplus" of money or you can just paypal to me |
update:
Did another compression today. Similar results. Cyl 4 is awol. Did a wet psi and it went up so he deduced it was prob the rings. Hes going to get back with me for my 3 options 1. Crate Motor 2. Low Miles Used Motor 3. Rebuild and Build current motor |
Sorry about that
did they try a leakdown test ? I would still run it as it is and enjoy it ! |
I would have a leakdown test done to confirm its the rings. However depending on your power goals may be a good time to rebuild motor. Best thing about leak down will give you a better idea what is leaking. ex if intake valves will hear noise at intake filter, exhaust valves will hear at exhaust, piston rings or cylinder walls will hear at oil cap and oil dipstick if removed, or headgasket can see if radiator cap removed but does not appear to headgasket. Had a 1.6 built and shop supposedly vaccum tested head and said was all good. After a couple of months of driving with no boost and only a couple pulls at 7lbs of boost was having issues performed compression thought #3 cylinder didnt seat. Performed leakdown and was getting minor leakdwon from rings but primarily leaking from exhaust valves. What kind of power levels will do be looking for?
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Originally Posted by naarleven
(Post 294280)
update:
Did another compression today. Similar results. Cyl 4 is awol. Did a wet psi and it went up so he deduced it was prob the rings. Hes going to get back with me for my 3 options 1. Crate Motor 2. Low Miles Used Motor 3. Rebuild and Build current motor As of yesterday the u pull it on 441 has a 94 with the motor still intact. Dont know about the mileage, cluster was gone. __________________ Best Car Insurance | Auto Protection Today | FREE Trade-In Quote |
must be nice to have upull its that actually have miatas. We have two upullits and only about 1/20 of their inventory is imports and mostly sedans.
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