I'm told by an inside source that Spoon will be making a product announcement at Thunderhill regarding a stroker kit (2.2L) - I'm assuming it's a stroker kit since that's the way Mugen did theirs. Has anyone at Thunderhill seen or heard about the product announcement?

 

When will Thunderhill be taking place?

 

maybe turbo isn't the way to go after all... he he hhhheee.
Please tell me this isn't vaporware though.... pleaaaaase
What kind of numbers are we talking about here. hp and price?
What kind of hp did the mugen stroker produce... anyone remember?

 

dont get your hopes up. a .2 liter increase in displacement is not going to give anywhere near the 100+ RWHP as going FI gives.

 

100+ rwhp at what rpm ? I don't know about the turbo kits, but the SC kits don't provide a whole lot of extra torque below 5000rpm. They boost top end, which most people already believe is adequate.

There's also the issue of piston speed. I think the S2000 engine is already pushing the limits. A stroked engine would probably require a lower redline. This then changes the the VTEC switchover profile, which will further affect ... well, you get the idea. I think it's a good idea, but I wouldn't do it unless the kit included much more than a new crank.

I for one still maintain that a near ideal balance of the S2000 would still be preserved with an S2300 (the same basic engine, just bored out 300cc), and city drivability would benefit. I guess you could get the same result from a longer stroke.

 

Just wait until Honda does this for you

 

[QUOTE]Originally posted by snoopy
[B]100+ rwhp at what rpm ?

 

I wish Honda would make an inline 3 liter six. Basically just add two more cylinders to the block and keep everything else the same. Can you imagine what that would be like with 360 HP? Can you say M3 eater?

Oh well, I can dream can't I?

 

Actually, Mugen DE-stroked and bored it to obtain the 2.2L. When we were at Mugen in Tokyo, the lead S2000 engineer we met with has one of the 3 Mugen F20C's in the world. He told us that the principle gains in their engine is almost entirely in torque...and that's not a big surprise. There is a very thin (relatively speaking) sleeve surrounding the cylinders in the F20C. There can't be a whole lot of boring and I would bet that 2.3 or 2.4 would be really pushing it based on thickness of the cylinder walls and you will have to obtain gains in a pretty drastic combination of stroke and bore.

I have heard rumors that King was supposed to get one of these motors, but I don't know if this has happened yet, or if it ever be will a reality. I also don't know if the top end was sacrificed on the 2.2L, but Uno-san from Mugen was very enthusiastic about some rather dramatic increases in torque...made the car FAR more drivable about town.

I don't know squat about Spoon's attempts at this.

 

>>> wish Honda would make an inline 3 liter six. Basically just add two more cylinders to the block and keep everything else the same. Can you imagine what that would be like with 360 HP? <<<

It's not that simple. Straight sixes are smooooth and sound nice. BUT the long crank flexes much more than a 4 cyl crank to oversimplify a bit. An E46 M3 6 revving to 8000 is actually pushing the envelope more than a 9000 rev f20c in some ways.

Stan