I have an h22 vtec in my 94 lude. It has 126k miles on it. is this to old to be reliable with a turbo on it? if so

Id be a little weary putting any means of forced induction on that high mileage of a motor.

My signature. Check the compression. How are the rods on the H22s? I've heard rumors about weak Honda rods? Hearsay or naysay?

i think what you heard was probably that some of the D series motors have week rods. this is true, but the H22 is a stronger engine

there is nothing wrong with the motor except it has 126k miles on it. would you guys recommend a new one? if so how much would a regular H22 cost in comparrison to the JDM h22 motor? by the way im gonna build up my internals, sleeve pistons, get gorged pistons, new rods, cams, lifters, cam gears. so my engine wont be weak, I just need to know if an 126k mile motor could handle about 10-12psi.

http://www.automotiveforums.com/vbulletin/showthread.php?t=184636

Theres an entire thread on the subject.

The D series engines have small rods, but they will run daily at around 220whp. That is quite a bit for how small the rods are. The only real problem you would run into is if the thrust and main bearings are slightly worn, you could spin a bearing easily w/ boost. The other problem is if the rings are worn, you could get severe piston slap. If the engine burned or used to burn oil, then you run the risk of predetonation because of hot carbon deposits on the piston head and valves. This question really depends on the condition of the engine.

H22's have very thin sleeves and are open deck. Thats a major problem with turboing them, even in good condition.

if you're going to turbo it, get better headbolts and a metal head gasket rather than a composite one.

You are usually better off sticking with the stock headgasket. This way if you develop a detonation problem, you just blow a headgasket instead of cracking a ringland or equivalent. IDK what the stocker is capable of, but it should hold out for some time. Look into it.

Don't they have a deck support piece for them now? I'm not too fond of the open deck idea anyways though.

But then if you push too much boost for the gasket, it blows and then you run the risk of warping the head. I would make sure that you have a good fuel system in place and then get the car tuned, but i still stand by the metal head gasket...but you do have a point with the detonation. I would make sure that the fuel system was in order and then i wouldn't have to worry about detonation.

But then if you push too much boost for the gasket, it blows

You'll probably end up blowing the gasket from detonation rather than overboosting it. :smile:

Detonation would destroy the gasket instead of a piston or worse. Its kinda like a failsafe.

IDK I would much rather just replace a headgasket than rebuild the engine. Same goes for getting the head milled. But I know a few guys that have blown headgaskets on more than one occasion and the head has been fine. Its usually just the thin part between the cylinder and the waterjacket that goes. But sometimes you get the ones that completely blow the side of the gasket out. Its your call.