RazorV3

[QUOTE]Originally posted by cjb80
If you add 30 psi, you still have the same displacement.

Intrepid175

When I look at the pictures of the S2000's cylinder block that have been posted in this forum, I have a very hard time seeing that you could over bore the engine at all. There just doesn't look like there's "any" excess metal between the cylinders. I'm not saying it can't be done, it just doesn't look like there's much room to do it!

As for the pressure problem? I understand what you're asking, I've just got no idea how to answer. I would think, however, that it probably doesn't work that way. It's almost never the case in nature where increasing the input exactly increases the output. Doubling the pressure probably won't double the effective displacement. There are always loses in the system that have to be delt with. Otherwise, we'd have cars running with perpetual motion engines!

Drive Safe,
Steve R.

Urge

Displacement = pi*(0.5*Bore)^2*stroke*# pistons...

If you want liters, use bore and stroke in mm and divide by 1 million...

I know two notorious tuners that are sleeving to 89 mm...

J

Elistan

For lots of race regulations, a turbo engine is classed the same as a naturally aspirated engine 1.5 times its size. So a 2000cc turbo would be classed the same as a 3000cc n/a.

Of course, actual hp outputs are often refined further by the regulations via inlet restrictors.

Honda-S2000VTec

When I ask the engine builder about boring out as large as possible he also stated that you need at least .110" material to seal between the bores. We measured the distance between the bores at .284" on a stock sleeved block. If you subtract 1.5mm per sided for a total of 3mm. .284"-.118"(3mm)=.166 minus some chamfering around the top .020 per side for a total of .04 = .124" left. So it looks like there is enough material between the bores for 90mm bore.

cjb80

That would be a bore increase of 1.5mm, not 3mm.

Chris

honda9krpm

How much do you need to bore the f20c block to put a sleeve in?
Is there any reliable place in USA that you guys would recomend for rebuilding a shortblock to be able to handle more boost? Can I have their websites or contact no?

cjb80

I have one block done by Benson which is currently in my car, and one block by Golden Eagle, which is being rebuilt now. The Golden Eagle (http://www.goldeneaglemfg.com/) one has braces to help support the sleeves, but the braces seem... for show. Some of the 'prongs' don't even touch the inside side of the block casting, which to me seems like they are doing nothing?? I imagine it will hold up just fine, but I think the 'block guard' (braces) thing is a gimic.

I don't think Benson has a site?

Chris

honda9krpm

how much is it for the rebuild cjb80?
how much would you sell (if you do sell it) one of your block for cjb80 ?

Honda-S2000VTec

You have 1.5mm increase in each bore when measuring between them.