94b18civicboost

Hi well let me start off by saying I rebuilt my b18b1 did everything right finished everything and put it back together and it ran like crap pulled spark plugs and had oil covered in them did a compression test and it had 65 psi in each cylinder can I get some help?!! Thanks 😄

94b18civicboost

ferio-ichi3

Did you check to make sure your timing was on point? New spark plug seals on the valve cover?

94b18civicboost

Everything was on point just not sure what's going wrong

PyroProblem

What was your piston to wall clearance? What was your ring gaps set to?

Usually when I have a low compression problem, I do a cylinder leakage test to see WHERE the compression is lost.
If all 4 cylinders have only 65 psi, you may have a camshaft timing problem.

94b18civicboost

Where should I start looking ? The heads off thinking about bulling the Pistons and rods

oldschoolmaster

Check your valve adjustment most compression loss is from head

ferio-ichi3

Put a little bit of oil on the pistons and see if it leaks down. If it holds, its alright, if not, then thats your issue, but probably, its in the valves. Turn the head upside down and pour some oil and se if the oil leaks down in. When you do that, do it to the head and pistons at the same time and check it in like 5 minutes. Free and effective way to do it.. thats what i did!

94b18civicboost

Thank you man I'll try it right now

PyroProblem

Cylinder leakage test aka cylinder leakdown test will tell you where the lost pressure is going and how much pressure your losing. You have to do it with the head on so its kinda too late now... TRy pouring liquid into the ports and see if the valves are leaking. I like windshield washer fluid concentrate instead of oil. Less mess and it smells good.

You did check your ring gaps, right? Any had the PTW clearance checked and set by a machine shop?
Valve lash set correctly?

94b18civicboost

I poured oil in it waiting now to see if it drains I did everything myself with the hand of a buddy

94b18civicboost

So far so good not leaking at all on both the head and the cylinders

ferio-ichi3

Mark where the levels are and check back tomorrow If everything is good. Did you get a fresh hone? Cyl 2 looks a bit off to me... If thats all good, then you need to redo timing. You made sure everything was lined up? Cyl 1 on TDC? cams lined up with the top head?

ferio-ichi3

Did you clock the rings the right way? If its new rings on a non honed block, you wont get a good seal. Are the pistons good? Why did you rebuild it? Was you burning oil prior to building the motor, or was it running just fine? What did you add? Tell the details!!!!

94b18civicboost

Letting it seat still so far so good also honing the cylinders tomorrow and I rebuilt it because I bought it boosted with an integra pulled it out and all the ring lands was done

94b18civicboost

Bump so far taking out Pistons today and honing it and re going over everything new rings clocked th right way but I think you're right about it not sealing right without a fresh hone

ferio-ichi3

Oh yea, get a fresh hone and do it again. Did the oil leak past the valves?how did you check tdc was correct?

94b18civicboost

Oil didn't leak at all still at same level on both the block and the head tdc was done with the head off lined it all up 100% put the head on and made sure tdc on head was perfect

ferio-ichi3

So cyl 1 was at the very top of the stroke? And the little nick on the crank lines up with the mark on the oil pump housing? Im wondering if the head might have a crack in the spark plug holes. Only way oil can get in the spark plug holes if the spark plug gaskets are bad. Strange issue, you have man

ferio-ichi3

Get the hone first and see what happens

94b18civicboost

I'm confused

94b18civicboost

Brand new bearings look done for

ferio-ichi3

DAMN! did you get the specs of your crankshaft?

ferio-ichi3

did you prime the motor before starting?

94b18civicboost

Primed it for a good while