Below is a picture of the chambers on my JDM h22 head. There looks to be alot of arbon build up. is this normal? the engine had about 2000(at the most) miles put on it since it was last taken apart. The tops off these pistons are BLACK...its worrying me...Whats going on???




Heres a pic of the cylinder wall on the #1 cylinder. The big box is pointing out that theres spots on the wall? what is this?? Has anyone else had this? The other cylinders seem to be ok...no vertical marks or anything. The SMALL box( i know you can really tell) shows theres a small nic in the wall. Will i have to hone or Bore the block?? All im trying to do is get the car running for daily driving.


Is there any Detailed write up on HOW TO remove pistons? IF i remove the pistons will i have to replace the rings? WIll i have to replace the piston bearings? Can i reuse the piston bearing if i see no damage on them?? I need alot of help and insight guys. I appreciate any help!!!

 

Carbon build up is normal.

I don't think anyone here would advocate for you to re-use bearings. Since you have the motor all apart, you might as well spend 200 on bearings for the sake of having new bearings. However, technically speaking, you can reuse the bearings, just make sure you keep them in order of the specific journal they came out of.

Also FYI, they are called main bearings or rod bearings. Pistons don't have bearings, they ride on the rod's wrist pin.

As for re-using rings, just get new rings, and have the block honed. It really isn't that much for all that and you know it's going to be right. It would really suck to assembly everything, to find out you're burning 3 quarts of oil per 100 miles.

 

thanks bb1.... I work at Honda....can i just go to the parts department and ask them to get me OEM size bearings for the rod? Or will it be an issue with sizing? or anyother issues? The money isnt the issue its the Mechanical skill that i would need to put it all back together, that worries me. get back to me! thanks again

 

Sizing is an issue. Bearings are color coded. You must figure out what your bearing clearances are in order to get the right sized bearings. One way of doing this is using a plasti-gauge.

I think your best course of action is to let someone with more exprience help you or have an engine builder assemble it. From your questions, I gather that you haven't had a lot of engine building exprience. Engine assembly is crucial to reliability and performance of that motor.

Yes you can goto the parts dept and order the bearings/parts that way.

 

your parts department will be able to help you with bearing selection. theres numbers stamped on the block for main bearing sizes and numbers on each crank web for rod bearing sizes.


thats a hell of alot of buildup for 2000 miles. any other probs or issues with the motor? looks like it was a little rich.

what injectors and ecu are you running?

 

Well..like in the picute theres a nic, not to sure if and what kind of problem that may be causing. To answer im running the stock injectors and I was running the JDM P13 Ecu( i just sold it). Your right though..to me it seemed like alot of build up.

When i wrote...would rod bearing size be an issue...what i meant was can i just go to the parts department at my work and get the OEM bearings for that engine? Can i just put oem bearing in without any sizing issue? Im not talking about getting ACL( is that what there called) bearing. Arent ACL bearing a "universal fit". I was just wondering if i would have to buy "oversized" rod bearings.
thanks guys...get back!

 

The Honda OEM bearing are size specific. They are the ones you would need to guage in order to use. You could use the "universal" ACLs if you wish, but for better engine life your better off getting the OEM in the correct size you need.

 

ACL's are somewhere in the middle of the tolerance range of honda bearings.

For rod bearings you'll need the number on the web of the crank for each corresponding journal as well as the number on the rod that will be used on that journal.

Its kinda confusing. I've used the ACL's before as well as TopLine bearings without a problem, but some peeps just like to keep it oem.

As for the injectors and ecu thing, i was just thinking maybe you had the wrong injectors for the ecu. I know theres a few different sizes out there for the h22 and not sure what the jdm ecu is set up for but that might be an issue if you are mixing and matching that stuff.

 

Ok...well...i guess im going to try to identify those items that you were describing on theweb, and rod. My best bet i think will be to get oem bearings.

 

i've ordered some bb6 type-S pistons, will i need to replace the sleeves to get them to fit in my H22A4? also, thanks to the thread starter, great pics and i'd love to hear more about your build, i'm a noob so i don't think i can pm you, but keep the forum posted, you've got me really psyched about my stuff coming in

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by bb4socal &raquo;</TD></TR><TR><TD CLASS="quote">Ok...well...i guess im going to try to identify those items that you were describing on theweb, and rod. My best bet i think will be to get oem bearings. </TD></TR></TABLE>

You should really start off with a factory service manual. It tells you everything you just asked, and where to look.

Second, if that little nick in the sleeve is deep enough where it can catch your fingernail when you run over it, the sleeves need to be honed or even bored out. That requires a special procedure since the sleeves are different, ask the Honda mechanics where they take their blocks to get honed.