H22A7 swap??

[VtecVentry]

Honda and mahle both imply that the frm sleeves are infact harder than the oem steel sleeves. The liners are not the problem, yes the use oil, but strength wise your wong. Honda tuning did an article on frm sleeves in 2009. Maybe u should look into that aswell

[VtecVentry]

http://www.hondatuningmagazine.com/tech/htup_0907_honda_frm_liners/

[DCrew]

Frm is not straight aluminum.. You cannot make a sleeve from pure aluminum.. GM tried in the 80's, it fail'd horribly. You just proved u do not kno what u are talking about. Maybe u should run honda's r&d program since from all ur knowedge on honda engines and claim frm is such junk......tell me tho... If it was such junk why did honda make the award winning f20c and f22c engines with 'junk' parts and yet ppl blow 500 hp thru them all day? u dont make any sense. I will bow out of this conversation since its a waste of my time and its evident i kno somethings that you do not.

Wow read my shit carbon alloy its a mix go read some shit bro. I did mine ok dont make me copy and paste bro

[DCrew]

1 reason im rite.. Many Prelude junkies will understand why I ask this question, so I explain for other readers: The H22A is known to have a "soft" block. If you want to turbo or supercharge it and never push the boost pressure past 8-10 psi, you will be OK with the stock engine and internals in the long run (this will most likely not get you much past 250 whp on the Prelude). But if you want more, then you have to upgrade internals -- forged pistons and rods, and sleeve the block. Other upgrades are necessary too, but not pertinent to this discussion. If you boost much past 10psi (some say even past 8psi) without these upgrades, you might hold it together for awhile, but eventually that boost is going to eat your sleezes up, and it will fail catastrophically and spectacularly.

So that's why the question. Sure, he's got dyno slips, sure, it was done by a performance shop. But I want to know. Sleeved or not sleeved? I think the answer is yes, and here's why:

-- he's got JE forged pistons (9.5-1 compression) and Crower rods. My understanding is that, forgetting high boost, those forged pistons will chew up the soft cylinder walls of the H22, and not take long doing it

[VtecVentry]

Belive what u want man.. Mahle would waste yrs of r&d on frm liner pistons if the were that junk, Honda wouldnt of used them in the NSX OR the S2000.. Your forgetting that the same frm liners are in the f/c engines. Please go tell all the s2k owners that have turbo builds blowwing 500 hp+ on stock bottom ends that their shit is junk... See how stupid u'll look

[VtecVentry]

Dude.. Really? you have to use an FRM compatible piston in a FRM block OR u have to sleeve it. It not fuckin rocket science that u cant use aftermarket genaric pistons in a frm block

[VtecVentry]

their are specilly design'd pistons for frm blocks. When i get finished putting my h22 boost build using frm liner compatible malhe forged p 9-1 comp rate pistons and everything else i have for it, i'll be sure to post it to make u look even more foolish with dyno results

[VtecVentry]

If u did kno, the liners dont fail from boost. The ringlands collapse under boost. Causing the failure. Stock h22 pistons arnt made for boost. period.

[VtecVentry]

Im done with this. its evident that we disagree. I also agree to prove my knowledge in thus information soon enough

[DCrew]

reason two y im rite:It's not a matter so much of how weak/strong the H22 sleeves are, as much as what they're made of. H-series blocks are built with FRM sleeves from the factory which, put quite simply, do not like boost. You'll hear different numbers about the max boost your can run safely on stock sleeves, but the unanimous decision is that it is not much at all. I think the most i've heard has been 7 psi. Even if that is all you're looking to run, you are still going to have to have a VERY conservative tune to make sure you're not going to ruin your cylinder walls. If you're looking to boost an H22, then i STRONGLY recommend getting the block sleeved so it can handle any boost you throw at it comfortably and you get to maintain peace of mind knowing that your engine isn't going to tear itself apart. It is DEFINITELY worth the extra investment in the long run.

[DCrew]

3rd reason im rite: Onto FRM sleeves (BTW I fixed all his 3rd grade spelling errors and weak sentence structures).

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FRM stands for Fiber Reinforced Metal. This basically means that the sleeve is not full ductile iron like the previous stronger sleeves of the Honda engine world.

This technology was introduced in 1988 with the introduction of the B21A1, which was included in the Prelude Si (JDM/EDM only).

FRM sleeves consist of a carbon fiber matrix, aluminum alloy, and aluminum oxide.

It is rumored that any type of power adder or forged piston in a engine used with the FRM sleeve will need to be re-sleeved, 95 percent of the people who have built an h22 with cracked sleeves will agree, the other 5 percent have never built a motor strong enough to crack the sleeve.

The following engines were created using FRM sleeves:
-B21A1
-H22A1
-H22A4
-H22A
-H23A
-F20C
-C32B(NSX)

FRM sleeves are also referred to as MMA in metalogy, but MMA is simply a blanket term for the MMA sleeves Yamaha used in their engine sold to Toyota.

Toyota motors powering the Lotus Elise, Lotus Exige, Toyota Celica GTS, Toyota Matrix etc. have FRM sleeves, but have a different composition sleeve than Honda's FRM sleeves.
.... damn bro!!!! i have a passion for the h motor and try to read up on them all the time anyone that close to me and know me. knows im the h guy. and i stated that they arent alum?? u posted it urself u prove urself wrong. and like i said before the friction of diff metals will cause them to fail.

[DCrew]

i said before they make frm pistons for builds rite we agree on that. im not doubting ur knowlege u make since. but the sleeze prove to be weak. weaker than anyother honda motor that dont have frm sleezes. u can boost more on any cast iron stock block than u can on h. we going to agree to disagree. good luck on build . and hope to see that shit tearing up the streets bullying around those b and embrassing those k's. power to the under dogs