Join Date: Nov 2018
Location: Southern California
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Updates for those interested
Gents, a few updates since the last time this thread was alive. I discovered my EFI light problem was O2's, so both are now shiny new. Cleaned and tested the MAF and it appears in good working order, but she's still as slow as ever. Had a good demonstration of how slow last week, when I helped a friend move a small uhaul box trailer. Now RRC's are supposed to be able to tow 4500lbs in high range, and 7700lbs in low. This was approximately a 2500-3000lb trailer, so not unreasonable, yet on a number of hills (not that steep mind you, these are normal 45mph roads) I was in first gear with my foot buried to the floor trying my absolute best not to completely grind to a halt. 0-40 on flat ground took close to a solid minute, winding all the way to 4k+ in all gears to make any headway. We had the hazards on out of necessity the whole way and pissed off a lot of impatient people.
Now the above embarrassment prompted a compression test, which I hadn't done with the new cam (or in a while actually). When I last did one (about 2 years ago), the results ranged from 145 as the highest, averaged about 137-138, and a single low at 123 (mind you this was on a slightly warm engine). From what I understand, on a hot motor the 8.13:1 compression should yield between 150-160 on a perfect motor, so I thought ~140 on a 135K motor wasn't too bad. Fast forward to yesterday and a subsequent compression test. This was on a warm (not scalding hot) motor, with a new more aggressive cam (bit lope-y sounding, so some mild overlap at idle), and my wife cranking the car while I looked glumly at the gauge.
Now this seems dismally low, which would signal the need for a rebuild, but it just seems odd since it runs so cleanly, doesn't burn a drop of oil (or coolant), and passes smog (in CA) with flying colors. Is it just tired, despite all that, or am I missing something? Basically at this point I'm just desperately trying to avoid a $5K+ motor rebuild, or crate motor drop in. Thoughts?