i was just wondering why honda use that kind of material in thier sleeves on the top of the line models ie prelude and s2k. it seem like they were basically sayin if u have enouf money to buy one of these u will have enouf to totally redo the whole motor, if that is what u want to do with this type of car. It kind of gives us the short end of the stick when stock ls blocks can handle almsot insane amounts of boost and last for a really long time.

did a search fmr didnt come up nothin

 

it just seems like a waste when u could jsut buy a 240 and spend like 10 gs in it, and still have money to bet 5 or 6 gs against a s2k. The person with the s2k would just have stock car. dont get me wrong i love hondas but even if u built the hell out of a s2k that 240 could just get a skyline motor and own.

 

Do a search for FRM.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mattspivey &raquo;</TD></TR><TR><TD CLASS="quote">it just seems like a waste when u could jsut buy a 240 and spend like 10 gs in it, and still have money to bet 5 or 6 gs against a s2k. The person with the s2k would just have stock car. dont get me wrong i love hondas but even if u built the hell out of a s2k that 240 could just get a skyline motor and own. </TD></TR></TABLE>
thats really a arguement w/ no logic. comparing a modded car that is over a decade old to one that is brand new. i mean, you can do this in just about any car.

3k for a crx, 6k for suspension 10k for motor n' motor work...
vs a ferrari 360 modena for 180k....
the crx would own....
so going back to your arguement...whats the point?

 

well then get a new mitsu eclipse and boost that, but any way the question is why in the hell did honda use the fmr in the sleeves. it seem like a waste when u could get a car with iron sleeves change out the pistons cause, most of the new cars have so high compression from the factory, and run some boost.

 

Its FRM sleeves. They probably have their reasons for using it, why don't you write them a letter and ask. Maybe weight was an issue so they went with FRM instead of an iron block. Maybe its cheaper to produce and they never take into mind that people wantto put aluminum pistons in it.

 

dude that has to be the best straight forward reply ever. i bow down. but in the before post with that other guy i was tryin to compare similar cars the 240 and s2k both rwd with 4 bangers prob around the same weight 2. its not really fair to compare 2 different classed cars but i think its a little more fair to compare like ones.

 

FRM....fiber reinforced material...for the cylinder walls.

They dont use this because its cheap, but they use it because it allows the h22, c32, and f20c motorts to use very large bores w/out using a heavier cast iron cylinder. The is great because its x many times stronger that just an aluminum wall, i believe on bar w/ strength w/ a cast iron wall, but a hell of a lot lighter than using cast iron.

Now the downside...
When wanting to do an overbore, like...say if you had a b16...and instead of 84 mm bore, you wanted to go say 84.5 (Which i believe is the largest you can go w/out sleeving) it wouldn't be possible (correct me if i'm wrong here, but i'm pretty sure i'm right) because of the nature and the composition of the FRM walls. They can be honed when putting new pistons in (ie a rebuild) but w/ overbore situations, you'll always see people tearing them down, and just going w/ sleeves instead.

how's that for an answer?

 

that is a great one! buy why dont ppl on here just give the good answer the first time? that seems logical to keep the weight off the front of the car b/c the lude is like 60/40 with the light way and the s2k looks similar, but weight distrubition is prob more like 52/48. i completley forgot they were designed in japan, for like road racing with mostly factory settings. Not for the streets and drag strips of usa when the most hp is crutial and suspension has no role. i respectfully appoligize