95ludeVTEC

Hello guys probably a stupid question but i just blew a rod in my H22a1 Block and was wondering if i could switch the block with an h22a4 block or what? just any input if anyone has done it before or what. i just found a good deal on a whole h22a4 motor so. that or im going to look for another bottom end for an h22a1

95ludeVTEC

or would i be able to easily swap the whole h22a4 into my obd1 95 lude? cuz i know the H22a4 is obd2, just need some advice, and thanks in advance

the boogler

im not too sure about the work required putting an obd 2 engine in a obd 1 car, probably will need a jumper harness.
all h22 heads were the same. as far as i know the only difference bettween h22 heads were the LMA's.
just be sure to use the correct head gasket, the a4 block is open deck while the a1 is a close deck. u need to use the a4 head gasket.

dirteydave

hey i got a question.i don't have a car as we speak but i am saving for one.im looking for a 2000 honda prelude but a friend of mine is telling me i should'nt get one because there motor's blow too easily.and i was wondering if you can fill me in on it and tell me is it a good car and another question,can i put a twin turbo on a prelude?please hit me back up,i have question's that need answer's.thanks

95ludeVTEC

i can honestly say in both preludes ive owned the motors have been strong so dont dispute that fact. i beat the crap outta my old prelude everyday for a year and a half put 20,000+ miles on it and never had a problem. and no twin turboing a 4 cylinder is pointless. people push enough power out of a single turbo on a prelude no need for 2

95ludeVTEC

and thanks for some info boogler

Apex1972

you have to use the entire rotating assembly from the H22A4 because it has larger main bearings. also make sure you use the H22A4 headgasket and youll be fine.

95ludeVTEC

so i could use the block of the h22a4 and keep the head i have off the a1 such as intake mani etc. and obvs use the a4 headgasket. and have no problems? also no problem with my obd1 wiring harness etc? i know there isnt many plugs on the block just the oil pressure etc.

Rosko

iTrader: (1)

I would swap the entire motor, that would be easiest. Just keep the obd1 distributor and intake manifold and obd1 wiring harness and you will be fine. Your oil pump would have a few extra obd2 sensors but if you keep the obd1 dizzy then it doesnt matter and they can just go unused.

95ludeVTEC

yeah thats what i figured. i just wanted to double check and make sure verything was straight with all that before i bought the motor for no reason and such. i would be able to keep the same ecu too right?

Patricbiffi

Timothy Hewston

I'm current putting an a4 block in my prelude and using my a1 head what are you calling the rotating assembly sorry for my ignorance but this is the first car I've ever tackled myself

TimiK

A1 and 4 have different crank

JRCivic1

Crankshaft main journal size makes no difference if you use the ENTIRE short block/bottom end. The A1 head will work just fine on an A4 block... the only tricky part is you need to use the head gasket that matches the BLOCK and not the head. So you will need to use an A4 ('97-01 Prelude) head gasket.