So my H23 leaks about a quart of oil a week and I'm having a few other problems, so its time to give my lude some balls. I'll probably buy the engine from Hmotors, I've read good things about them.
Anyways, I've been reading up on how to do the swap and I have some questions...
I disconnected the stock oil pressure switch on my H23 cuz I've been using my Autometer gauge. Can I remove it from the H22 as well or does the ECU need it for VTEC purposes?
Are the crank and pulleys the same on the USDM and JDM engines? Are the A/C compressors and alternators usually in pretty good shape on these motors?
The ECU harness... I've read that some 93's are prewired for VTEC. If that is the case with mine, all I'd have to do is use my USDM harness on the H22 and just run the VTEC wiring right?
Is it ok to use my old manual tensioner from my H23 or should I buy a new one from Honda?
You must keep the OPS connected, for Vtec purposes.
I'm pretty sure all of the pulley's are the same for JDM and USDM.
The compressor probably won't work on the engine they give you, depending on how they cut/capped the lines.
Alternator usually works.
Yes some are prewired for Vtec. And yes all you would need to do is take the wire that's on the vtec solenoid from the motor you buy, and connect it to the connector that's sitting right behind where the stock air box sits.. there should be a connector not connected to anything sitting right there if your car is prewired.
It is BETTER to use the H23 tensioner rather than using the auto H22 tensioner.
Cool, I guess I'll have to buy a braided hose an a Tee so I could keep the stock pressure switch and use my Autometer at the same time.
But about the manual tensioner, there shouldn't be anything wrong with my old one right (engine has 171k miles)? Or should I just go ahead and buy a new one?
and btw, there are differences in the crank, i had to go out and buy a new belt (which you should do anyways) but there is one more rib on it.
or if you want to keep it, you can just put your h23 crank pulley on there. but i would just keep everything on the h22. i didn't use the h22a a/c compressor but i did use the altenator.
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I should clerify... there is no difference between JDM H22 and USDM H22 pulleys... but there ARE differences between H22 and H23 Pulleys... where the H22 came from has nothing to do with it...USDM, JDM, whatever. The H22 belts are 1 rib wider (ie H23 belts are 5 ribs wide, H22 belts are 6 ribs wide).
The valve cover gasket I'm going to replace since I'm going to change the T-belt and water pump. Should I go ahead and do the oil pan and rear main seal? Any other leakage prone seals / gaskets I should change while I have the engine on the pallet?
Since you're going to be in there, think about replacing your front main seal and the balance shaft seal too before you replace all your timing belt stuff. It would just be a lot easier with the engine out of the car.
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Ok, exhaust question... I've read that the VTEC downpipe will not bolt up to the Si cat. BUT, I have an aftermarket hi-flow cat. I can move the flanges around and I think the cat was too long for my exhaust.
Anyways, what is the difference between the Si and VTEC cats? Length and flanges? Any pics?
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44,444 Km or ~25k miles on the engine
Linear Mode
