my friend had a 89 prelude i think, it was the S, had a blown hg, bought the SI motor. its the DOHC SI motor

he sold the car/motor to his cousin, who did some research on it, and seems to think that the cylinder walls were partially made of carbon fiber. now is it just me, or does that seem like a terrible idea. carbon fiber isnt all that great as far as heat goes, at least not center-of-the-engine heat.

and my friend is an idiot, and thinks it is so you never have to hone the cylinders...but he doesnt know what hes talking about.

 

its FRM, fiber reinforced material

 

Yeah FRM, it's basically an aluminum oxide alloy with carbon fibers in it....
And your friend might not be as stupid as he seems, a lot of luders dont even have to hone their FRM cylinders durring a rebuild because the cylinders are still in awesome shape, it's the piston rings that get chewed up by the FRM...

If Carbon Fiber isn't so good for heat dissipation then why do they use carbon fiber for high hp clutch applications, or for use with brake rotors? Carbon fiber is awesome, it's lightweight, durable, and expells heat quickly all while keeping it's composure and it doesn't warp as easily. It's main drawback is it tends to be rather abrasive, which is why it's so good with rotors and clutches, but mess up the piston rings...

 

carbon ceramic is not the same thing as carbon fiber

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RangerJoe &raquo;</TD></TR><TR><TD CLASS="quote">carbon ceramic is not the same thing as carbon fiber</TD></TR></TABLE>
Of course not, I never said that...
But it's true that carbon fiber does dissipate heat quickly...Another example, Advanced Induction Research's carbon Fiber intake....

 

intake manifolds dont take nearly as much heat as cylinder walls