Best weight reduction mod

Wow, 400hp at 10k rpm and 245 ft lbs at 7500 rpm. Fits w/ the small displacement I guess. Bet it could sound wicked.

Mugen makes a v8 that does 590hp at 9500 rpm and 383 ft lbs at 7500 rpm but weighs 288lbs. I bet it'd cost exponentially more.
 
That engine has been out for a while now. Its acutally 2 1300cc Hayabusa motors mated together. That thing is packing alot of power for its size.
 
"2.8 liter V8, approximately 400 hp. Engine is inclusive of hardware as described below.... $27,700"
 
jdm monkey said:
That engine has been out for a while now. Its acutally 2 1300cc Hayabusa motors mated together. That thing is packing alot of power for its size.
Click to expand...

Hmm, that's a rough sketch. The heads (and probably pistons/rods) are from the busa but most other parts are bespoke, including the block with is CNC machined out of aluminum and of course the crankshaft.

For those with an interest in engine design, this thing is fascinating. Running two parallel inline fours requires flipping one of the heads around, a serious problem especially for the cam drive arrangement, in effect one of the heads must be extensively reworked to drive the cams from the opposite side; a problem which Hartley solved with an elegant solution: one cam drive on either end of the engine, the custom block accomodates this specific design (which I have never seen before). The heads can thus be used virtually unchanged. The block, as I understand it, is produced to replicate the combustion chamber design of the original busa engine, along with a few mods to make the sort of advertised power.

See the website for pictures of this clever arrangement.

Now, imagine doing the same with two F22C engines and a block designed to bolt straight into an NSX.. the V8 of our dreams. The Hartley V8 is a great engine but will be most effective in a lightweight sportscar, the NSX requires more torque at lower revs.
 
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If the Hartley is 27k, I can only imagine what price of the Mugen MF408S is.

Anyone have a contact at Panoz and can ask how much they paid for those a couple years ago?
 
bruckner said:
Now, imagine doing the same with two F22C engines and a block designed to bolt straight into an NSX.. the V8 of our dreams.
Click to expand...

This has been discussed before at length, but for obvious reasons it has never been done. I'm willing to be that Ponyboy's fabled Mugen MF408S would be cheaper to obtain than a bespoke F22C2. But it makes you wonder if Honda ever toyed with the idea. Of course, at this point, don't expect to see any motorhead engineering to come out of Honda unless it is in the shape of a RC car battery pack. :rolleyes: But I digress...
 
Juice said:
This has been discussed before at length, but for obvious reasons it has never been done.
Click to expand...

Could you please provide a link to a thread where this option has been discussed "at length"?

Building an engine using existing parts is certainly not easy. In fact, until Hartley came up with the dual cam drive idea, it was unthinkable without astronomical funds and engineering expertise.

Have a look at how the project came about, who built it and which methods are employed. The same could be done using F22C heads and pistons, although there may not be a large enough market to justify the development expenses.

As for the Mugen MF408S, wouldn't this be useless on the street? Rebuilds at 3/5,000kms sounds cool, but could rapidly wear off...
 


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