Pre1ude

If I close the deck then would my motor be as though as the H22A1 ?
And what kind of turbo is the best, and what kind of wastegate ???
Is J.E. rods and pistons the best ? What kind of injectors ?
Thanks !

ludeboom

My list would be:
Darton makes good sleeves, and they have new ones out now that connect the open deck cylinders together with steel. just remember that aluminum and steel are two different types of metal and at those temps they respond very differently to heat and rapid change's in heat

i personally think either a closed deck JDM block or USDM 4g block would be the best route. they are available by the truckload all over the internet. its not gonna come overnight but it will get to you eventually. sleeve that block, cylinder lining only (i think thats the only kind available for h22a/1 ).

rods and pistons are up to you really
make sure you get forged dish pistons and some eagle rods, unless you can afford the crower rods. change the bearings. change the oil pump. get the crank polished. spend around 1000 to get the engine and drivetrain to top physical shape where needed, axles, LSD, clutch, ignition, (all depending on boost).

go with RC injectors, they arent that much

turbo and wastegate. in a perfect world you would get a custom manifold made to use a mitsu turbo on that bitch and outrun some helicopters.

Tial wastegate is prob the best option from what ive seen.

~boom

Pre1ude

Thanks dude !!!
That was really well explain !
I guess I'll go with the H22a1 instead !

Pre1ude

What about my ATTS, Should I take it off ???

ludeboom

well i dont deal with ATTS because i have no use for it. ive heard it said (possibly in this thread) that ATTS does not respond well to high torque. a turbo h22 is going to make A LOT of torque. i dont even know if the ATTS unit will bolt to the h22a/1, i dont think it will. thats not to say you cant just leave it on and bolt your SH tranny to the h22a/1 because that is a direct fit.
as long as the ATTS mounts on the tranny and not the block.
but again ive never worked on a ATTS unit so i dont know for sure

with that much power, you will want a QUAIFE LSD anyway, because it will be hard to effectively put that power to the front wheels.
so, if electrically and hydraulically possible, remove the ATTS and disable it.
u might just want to sell the SH and get a base 5G lude.

or a 4g

~boom

drift

the SH tranny will not bolt up to an A1 block. it wont even bolt up to an A4 block unless it's an SH A4.

if you go A1, you'll need a tranny to go with it.

ludeconduct8

i disagree that the h22a4 is the worst block for high HP turbo setup....

yes they are open deck but all you need to do is get the re-sleeved and end of story....
The 93-95 h22a1's have small crank journals than the 96+ blocks..i for one would rather have a 96+ block.......

check out the September 2003 HCI (hot compact imports) mag they have an h22a4 that is booted and has 725 WHP with the bottle...i think without the bottle they had 550 WHP..

5hift

650 w/ out bottle. I got that issue, bad ass set up they got, they dropped it into a civic hatch none-the-less.....

ludeboom

my bad dont deal much with 5g's

~boom

ludeboom

1. - the h22a1's crank has never been a problem. ive heard it said that it will handle 1000 HP, cant validate that of course.

2. - ive seen/heard of more h22a4's spinning bearings under boost than any other h series, so maybe bigger isnt always better. . the fact remains that even with sleeves and even the interlocking sleeves that connect the cylinders, that the block TWISTS. not to mention that steel and aluminum are at opposite ends of the world of metalurgy.
so you have 4 steel sleeve's connecting the top of the block and aluminum connecting the bottom.
lets think about that
im sure it will make power, because its an H just the same. i just think for price its a better bet to go with a closed deck.

~boom