OK.. so I finally got things together and did a leakdown test on my stock B17a1 with 239,400 miles.

I set each cylinder to TDC and tested that cylinder. I set the regulator to 100psi and each cylinder gave me the exact readout. 104psi.

Cylinder 1 - 104psi
Cylinder 2 - 104psi
Cylinder 3 - 104psi
Cylinder 4 - 104psi

Does this seem right? I did it with the engine warm. I listened for leaks and didn't hear or feel any leaks from anywhere.. Only when I left the air on in the cylinder, the spark plug seals started to leak air..

My compression results from September were great as well.

Cylinder 1 - 190
Cylinder 2 - 185
Cylinder 3 - 185
Cylinder 4 - 190

So I guess my engine is doing AMAZING for the amount of miles on it.

Let me know what you guys all think.

 

The results of a leakdown test are indicated as a percentage. Did you follow a procedure similar to what is outlined here or did you simply fill each cylinder to 100 psi? Either way, the results of your compression test seem to indicate that your motor is indeed in decent shape from a compression standpoint.

 

ya if your not having oil consumption problems your motor is in great condition.

 

I used c-speedracing.com and some other peoples advice on here.

I did it while the motor was warm.. (it reached operating temps). Then proceded to each cylinder. I did it in this order 1,4,2,3. dont ask me why.. lol.. I just did.

I just bought a new compressor with a max of 135psi. I screwed in my compression tester adapter into the spark plug whole and then I set my regulator to 100 psi and let the air into the cylinder. I watched my air pressure gauge and it was constantly reading 104psi. I did the test 3 times on cylinder 1 just to make I was doing it right.. And each time I got test reading.

I did that for each cylinder and kept getting 104psi in each cylinder. So I'm assuming I did everything right.

And the motor doesnt leak or burn oil. Well it only burns oil when I use VTEC a lot.. Like every other VTEC engine.

 

 

dang