H22 Supercharged with nitrous - Honda Forum / Acura Forum

HondaH22a#1 · 09-02-2007, 09:09 AM

Hey,

My goal by the end of this year is to have my h22 supercharged with nitrous. I already gave a complete skunk2 valvetrain sitting in my room. I am just wondering what kind of cams and pistons would be good for both supercharge and nitrous. Is lower compression better or stock compression? Any help is greatly appreciated. Thanks

daveb91 · 09-02-2007, 04:30 PM

No need to change piston and cams for the SC. Now mattering on the shot you using I would at least got with ARP head studs and some forged pistons. I also wouldnt rely on the JRSC FMU with all that.

accordsleeper89 · 09-02-2007, 04:32 PM

FMU ftl, Standalone ftw

AcidLotus · 09-02-2007, 05:31 PM

It should be fairly well known that the H22s have weak ringlands, particularly when boosted or sprayed. However, I'm not familiar with how to resolve this issue, so you might look at new pistons and rods, or maybe a block guard.

accordsleeper89 · 09-02-2007, 05:39 PM

Quote:

Originally Posted by AcidLotus

It should be fairly well known that the H22s have weak ringlands, particularly when boosted or sprayed. However, I'm not familiar with how to resolve this issue, so you might look at new pistons and rods, or maybe a block guard.

if he is going to be boosted, he would want to re-sleeve it to maintain reliability as well

HondaH22a#1 · 09-03-2007, 07:00 AM

Would hondata be able to run all of that? Or would I have to get something else. I'm planning on running a 50 or 75 shot of nitrous. Also I was thinking about getting the block sleeved, is that needed?

accordsleeper89 · 09-03-2007, 10:13 AM

Quote:

Originally Posted by HondaH22a#1

Would hondata be able to run all of that? Or would I have to get something else. I'm planning on running a 50 or 75 shot of nitrous. Also I was thinking about getting the block sleeved, is that needed?

H series can be boosted without being re-sleeved, but you have to have a pretty good tune, it would be much more reliable and you would have a better feeling of security if you re-sleeve it.......FRM cylinder lining ftmfl, cast-iron (F-series ftmfw)

unaTEINable · 09-03-2007, 04:39 PM

FRM sleeves are very strong. Have you ever heard of someone cracking a FRM sleeve? I know I haven't. H22 can handle 6-9psi on stock internals with proper tuning. Especially if you send your supercharger to get reworked by Endyn. I highly recommend doing this. With the MUCH lower IATs that you'll get you could probably run 6 psi and a small shot of nitrous. You get air temps at 12 psi on a modded blower that are lower then 6 psi on an unmodded one.

If not, the trick with the h22 is the weak ringlands. So you'll want to replace the pistons. But due to the FRM sleeves, regular aftermarket pistons will scratch the cylinder walls. So you're choices are either resleeve (or press in) with standard iron sleeves or go with mahle FRM compatiable pistons. After that you could run probably 15-20 psi (on a modded blower of course, a stock blower would generate too much heat to be useful up that high) and a shot of nitrous. A member of Preludeonline.com is just finishing up this exact build. He'll have ~400whp.

unaTEINable · 09-03-2007, 04:44 PM

Oh one more thing, you don't really need to touch your head. The h22 head is fine. I would sell the valvetrain to fund other things.

And stock h22 cams are the way to get with a supercharger. No one has yet to find a cam that'll give gains on the h22. You can't even adjust cam gears with the supercharger on due to the brackets blocking everything.

accordsleeper89 · 09-03-2007, 06:24 PM

Quote:

Originally Posted by unaTEINable

FRM sleeves are very strong. Have you ever heard of someone cracking a FRM sleeve? I know I haven't. H22 can handle 6-9psi on stock internals with proper tuning. Especially if you send your supercharger to get reworked by Endyn. I highly recommend doing this. With the MUCH lower IATs that you'll get you could probably run 6 psi and a small shot of nitrous. You get air temps at 12 psi on a modded blower that are lower then 6 psi on an unmodded one.

Cast-Iron cylinder lining>FRM cylinder lining, hence better for boost, you can run the boost on the FRM composite sleeves all you want bro, but in the end, running the boost through cast-iron is going to be far more reliable even with higher boost pressures. You may be able to run boost on an H22 stock block, but how reliable is it truly going to be with the average driving style of kids these days? might last for 150 miles? maybe 500 tops. just go with new sleeves, its cheaper than a new motor........ btw I have seen a cracked FRM sleeve...fucking local tuners write checks their asses can't cash on a boosted prelude.....

All the above is taken in the mindset that the OP is the average boostaholic that does 3rdgear drops and goes into VTEC at every opportunity, or that the OP doesn't know he will need a new ECU setup.......

unaTEINable · 09-04-2007, 06:26 AM

Quote:

Originally Posted by accordsleeper89

Cast-Iron cylinder lining>FRM cylinder lining, hence better for boost, you can run the boost on the FRM composite sleeves all you want bro, but in the end, running the boost through cast-iron is going to be far more reliable even with higher boost pressures. You may be able to run boost on an H22 stock block, but how reliable is it truly going to be with the average driving style of kids these days? might last for 150 miles? maybe 500 tops. just go with new sleeves, its cheaper than a new motor........ btw I have seen a cracked FRM sleeve...fucking local tuners write checks their asses can't cash on a boosted prelude.....

All the above is taken in the mindset that the OP is the average boostaholic that does 3rdgear drops and goes into VTEC at every opportunity, or that the OP doesn't know he will need a new ECU setup.......

Sure cast iron maybe stronger, but those can crack just as easily without the proper setup. I think that if you could use aftermarket pistons with h22, a whole bunch of people wouldn't have sleeved their block. FRM is plenty strong. The only There are quite a few people over at Preludeonline.com that run JRSC and I think only one has sleeved his block. Their engines have lasted thousands of miles. One with over 50,000 miles with the JRSC.

If the OP wants to play it safe, all he needs are some mahle pistons and a good tune. Oh, and to the OP, if you do run nitrous make sure it's a direct port set-up. The extreme cold of the nitrous hitting the heated up supercharger blades ends up cracking the coating Jackson Racing puts on them and sending it into your motor. Or the Endyn mods will also remove it for you.

accordsleeper89 · 09-04-2007, 10:38 AM

Quote:

Originally Posted by unaTEINable

If the OP wants to play it safe, all he needs are some mahle pistons and a good tune. Oh, and to the OP, if you do run nitrous make sure it's a direct port set-up. The extreme cold of the nitrous hitting the heated up supercharger blades ends up cracking the coating Jackson Racing puts on them and sending it into your motor. Or the Endyn mods will also remove it for you.

HondaH22a#1 · 09-04-2007, 12:13 PM

Quote:

Originally Posted by unaTEINable

Sure cast iron maybe stronger, but those can crack just as easily without the proper setup. I think that if you could use aftermarket pistons with h22, a whole bunch of people wouldn't have sleeved their block. FRM is plenty strong. The only There are quite a few people over at Preludeonline.com that run JRSC and I think only one has sleeved his block. Their engines have lasted thousands of miles. One with over 50,000 miles with the JRSC.

If the OP wants to play it safe, all he needs are some mahle pistons and a good tune. Oh, and to the OP, if you do run nitrous make sure it's a direct port set-up. The extreme cold of the nitrous hitting the heated up supercharger blades ends up cracking the coating Jackson Racing puts on them and sending it into your motor. Or the Endyn mods will also remove it for you.

So are you guys sure that the stock head could handle it? Kinda worried bout bending a valve or somethin. Anyways so I definietly know that i'm gonna go with the FRM sleeves. What pistons and rods do you guys recommend goin with this setup?

unaTEINable · 09-04-2007, 04:06 PM

Quote:

Originally Posted by HondaH22a#1

So are you guys sure that the stock head could handle it? Kinda worried bout bending a valve or somethin. Anyways so I definietly know that i'm gonna go with the FRM sleeves. What pistons and rods do you guys recommend goin with this setup?

Positive about the valvetrain.

And some 9:1 c/r Mahle gold series pistons, and some Eagle rods I will be a fine set-up. Do you plan on getting your blower moddified by Endyn? If not I suggest you forget all about the pistons and rods and just spend the money on that. Then run 9 psi and forget about nitrous. You'll make about the same power, with less money and less stress on your motor. That's just my opinion, though.