gaskleppie

The S2000 has a nikasil coating on the cylinder walls as you know.
I want to put a set overbore pistons in it so the nikasil plating will be bored out. Do you need to re-plate the nikasil coating or not?

Its rather expensive you know....


Modified by gaskleppie at 9:35 PM 4/18/2004

MachAF

Nikasil is VERY expensive.

It has many advantages though: creates very strong cylinder walls, reduces friction, reduces vibrations, increases engine life.


Modified by MachAF at 12:53 PM 4/18/2004

Sonny

Most 2 stroke dirt bikes have nikasil plated cylinders. I'm not sure if it's the case with the S2000, but on the Honda 2 stroke dirt bikes, the cylinders are all aluminum. There is no iron liner. Without the plating, the cylinders wear extremely fast.

http://www.ericgorr.com

That's a place that does replating. I blew an engine up once and damaged the plating. I had it sent there and replated. I don't think they do any automotive work, but they might be able to point you in the right direction.

Sonny

gaskleppie

Ok, good info but do you need to replate them? does anybody know?

I've read from differend people that they have overbored a S2000 engine but no one is talking about replating.

gaskleppie

anyone?

sharkcohen

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by gaskleppie &raquo;</TD></TR><TR><TD CLASS="quote">The S2000 has a nikasil coating on the cylinder walls as you know.[/i]</TD></TR></TABLE>
No it doesn't. You are confusing nikasil with FRM.

gaskleppie

ok? And wat is FRM? Also some kind of coating?

dennis

http://autozine.kyul.net/techn...6.htm

JonnyCoupe

The B series liners are FRM aswell.

Your best of sleeving it TBH with a stiff ductile liner.

The H22 has Nikasil bores

Silverpike

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JonnyCoupe &raquo;</TD></TR><TR><TD CLASS="quote">The B series liners are FRM aswell.</TD></TR></TABLE>
No they are not.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">The H22 has Nikasil bores</TD></TR></TABLE>
No it doesn't.

Stop spreading misinformation. Do some research before you spout crap.

sharkcohen

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JonnyCoupe &raquo;</TD></TR><TR><TD CLASS="quote">The B series liners are FRM aswell.

The H22 has Nikasil bores</TD></TR></TABLE>
No, and no.

gaskleppie, are you looking to install OEM overbore pistons, or aftermarket pistons?

JonnyCoupe

Thnk what you think

sharkcohen

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JonnyCoupe &raquo;</TD></TR><TR><TD CLASS="quote">Thnk what you think</TD></TR></TABLE>
Hahahahahahahahahaha!

99blackcivicSi

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JonnyCoupe &raquo;</TD></TR><TR><TD CLASS="quote">Thnk what you think</TD></TR></TABLE>

How about think what we know!!!!!!! considering you have no idea what your talking about H series has FRM walls that is whey when you put a forged pistion in it gauls the sides up very very bad because it is a composte fiber type thing!!!!!! don't spread missinfo like this listening to people like you makes everyone dumber

JonnyCoupe

The H22 has Nikasil bores, tahts why you cant drop forgies in, the materials in such a piston bind on the nickel compounds, hypereurtic pistons are ok though.

Honda has always used composite sleevs since the advent of VTEC and can have forged pistons dropped in.

JonnyCoupe

Okay i misused the term FRM, its 3am iver here at mo !

What i meant was composite sleeves, where HOnda uses a matrix of alloy and iron materials to reduce weight in the early VTECs, that is what im refering to as the B16

FRM is very much a recent thing steming from the NSX. These pistons need a coating of iron though as they bind against teh alumimum bores.

H22 are, still are and always have been Nikasil coated.

sharkcohen

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JonnyCoupe &raquo;</TD></TR><TR><TD CLASS="quote">H22 are, still are and always have been Nikasil coated.</TD></TR></TABLE>
No, the H22 does and always has used FRM (Fiber Reinforced Metal) sleeves.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 1997-1999 Honda Prelude Service Manual &raquo;</TD></TR><TR><TD CLASS="quote">Bore Honing: Caution: This cylinder liner uses FRM (Fiber Reinforced Metal).</TD></TR></TABLE>




Modified by sharkcohen at 8:50 PM 4/19/2004

mos

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JonnyCoupe &raquo;</TD></TR><TR><TD CLASS="quote">

Your best of sleeving it TBH with a stiff ductile liner.</TD></TR></TABLE>

Saying 'stiff ductile' is like saying jumbo shrimp. Sorry, but I don't nitpick on non-nitwits.

JonnyCoupe

Well it doesnt flex like the composite ones. Afterall the aftermarket sleeve kits are ductile iron.

Maybe you should look at the JE website, it clearly says you need to re sleeve the H22A engines cos there Nikasil coated.

THe early 1992 Prelude onwards have the H22a, or is that another great car the Yanks misse dout on cos they prefer using all the worlds resources in their big V8 barge cars

sharkcohen

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JonnyCoupe &raquo;</TD></TR><TR><TD CLASS="quote">Maybe you should look at the JE website, it clearly says you need to re sleeve the H22A engines cos there Nikasil coated.</TD></TR></TABLE>
LOL, I could care less what JE has posted on their website. If that is on their website, then it is incorrect. H series engines have FRM sleeves. Known fact.

JonnyCoupe

That would mean it used it before the 3.2 NSX. Which it didnt.

I now realise the 95-97 model use it, but the early one are nikasil for sure.

sharkcohen

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JonnyCoupe &raquo;</TD></TR><TR><TD CLASS="quote">That would mean it used it before the 3.2 NSX. Which it didnt.</TD></TR></TABLE>
Actually, it did

gaskleppie

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sharkcohen &raquo;</TD></TR><TR><TD CLASS="quote">
gaskleppie, are you looking to install OEM overbore pistons, or aftermarket pistons?</TD></TR></TABLE>

I'm looking for hi compression aftermarked overbore pistons. (12,5:1)

I'v downloaded the service manual so its all clear now about the sleeves and pistons. your alowed to bore the sleeves a bit. For a max size piston of 87.233mm or 87.246mm
Does anybody know who can deliver an aftermarked overbore high compression piston?

alphajesse

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sharkcohen &raquo;</TD></TR><TR><TD CLASS="quote">
No, the H22 does and always has used FRM (Fiber Reinforced Metal) sleeves.
</TD></TR></TABLE>
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JonnyCoupe &raquo;</TD></TR><TR><TD CLASS="quote">
H22 are, still are and always have been Nikasil coated.
</TD></TR></TABLE>
No, the H22 does and always has used FRM (Fiber Reinforced Metal) sleeves.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 1997-1999 Honda Prelude Service Manual &raquo;</TD></TR><TR><TD CLASS="quote">
Bore Honing: Caution: This cylinder liner uses FRM (Fiber Reinforced Metal).
</TD></TR></TABLE>




Good one Shark.
This JohnnyCoupe guy is a tard.

ALL H22 engines use FRM. F20C in the s2k uses FRM. 3.2L NSX uses FRM. The reason for its use in all of those engines is that it actually STIFFENS the cylinder bores versus an iron liner, allowing closer spacing between the cylinders and giving some additional reinforcement to the block.

edit: damn forum doesn't allow nested quotes

JonnyCoupe

You dont know what composite sleeves are clearly.

Those are the ones in the most Honda, rather than alloy with fibres reinforcing (FRM) its a alloy and iron metal matrix.

THe H22A1 is Nikasil coated. Do some research, afterall we did actually get all the decent engines over here.