So some background info.. I bought a jdm gsr swap from a more shady vendor a few months back. I bought it because they had a video of them doing a compression test to it and it showed a strong 225 psi across the board - vin# on the block was included.
Received the engine and found out it had severe water intrusion . Had to pay to get the gunk cleaned out of manifold, tb, oil pan. New cometic 3 layer headgasket, h22a LMAS, and valve lash to spec. Had it dyno-tuned on Hondata... put out a decent 163 whp on a dyna pak with shitty 89 gas because thats what the tank in my civic was filled with when the b16 blew up, (later topped off with 94 on the way home). It had I/H/E and msd ignition during tune.
Recently noticed it was lacking power, and I later saw 2 wires were not secured to dizzy cap, which I fixed w/ snap ring pliers... and ran good once again after fixing that. However, I concluded that I had been driving the engine for about a week with a bad misfire (wasn't really pronounced, just ran weak), and worried about possible fuel wash of cylinder walls. Sure enough the crankcase smelled of gas. Thought it would be a good idea to do a compression check.
The other day I rented a OEM compression tester, and did a dry and wet compression test, with disappointing results:
Cyl 1: Dry-152, Wet-152
Cyl2: Dry-170, Wet-190
Cyl3: Dry-170, Wet-190
Cyl4: Dry-172, Wet 182
Notes: Engine fully warmed up, fuel fuse pulled, msd coil wire disconnected, throttle body held wide open, about 7 cranks per test. All cylinders not being tested had spark plugs threaded in.
I realize a leak down test is perhaps necessary, and I will do that as soon as I get time and money (college sucks)...
But in the meantime do any of you experts have any input for this data? Considering its a 10.6:1 compression ratio, are these numbers low enough to worry about? And finally, would any of the given information falsify the test (i.e. spark plugs of all other cylinders still being threaded in, or maybe a lower-reading tester)??
Thanks
Received the engine and found out it had severe water intrusion . Had to pay to get the gunk cleaned out of manifold, tb, oil pan. New cometic 3 layer headgasket, h22a LMAS, and valve lash to spec. Had it dyno-tuned on Hondata... put out a decent 163 whp on a dyna pak with shitty 89 gas because thats what the tank in my civic was filled with when the b16 blew up, (later topped off with 94 on the way home). It had I/H/E and msd ignition during tune.
Recently noticed it was lacking power, and I later saw 2 wires were not secured to dizzy cap, which I fixed w/ snap ring pliers... and ran good once again after fixing that. However, I concluded that I had been driving the engine for about a week with a bad misfire (wasn't really pronounced, just ran weak), and worried about possible fuel wash of cylinder walls. Sure enough the crankcase smelled of gas. Thought it would be a good idea to do a compression check.
The other day I rented a OEM compression tester, and did a dry and wet compression test, with disappointing results:
Cyl 1: Dry-152, Wet-152
Cyl2: Dry-170, Wet-190
Cyl3: Dry-170, Wet-190
Cyl4: Dry-172, Wet 182
Notes: Engine fully warmed up, fuel fuse pulled, msd coil wire disconnected, throttle body held wide open, about 7 cranks per test. All cylinders not being tested had spark plugs threaded in.
I realize a leak down test is perhaps necessary, and I will do that as soon as I get time and money (college sucks)...
But in the meantime do any of you experts have any input for this data? Considering its a 10.6:1 compression ratio, are these numbers low enough to worry about? And finally, would any of the given information falsify the test (i.e. spark plugs of all other cylinders still being threaded in, or maybe a lower-reading tester)??
Thanks