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post #1 of 10 (permalink) Old 06-20-2006, 06:05 PM Thread Starter
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Hayabusa V8...

Hello all,

Thought I would drop this in all of your laps to think about...

A V8 engine based on two Hayabusa engines. It is a reality and currently being tested. I have included some pictures... Imagine this in your Giulia...

This information comes from:


He is designing his own race car currently and this is the engine he plans on using for final production. He has a link of it running in the car and the sound, but I will not link to his site like that.


James Hochmuth
1970 GTJr
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post #2 of 10 (permalink) Old 06-20-2006, 08:50 PM
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wow...what a neat idea. i have seen a few light weight race cars running just the single inline four busa engine and they really fly. i wonder how money has been poured into it....casting a new block and crank etc etc cant be cheap!

No more Alfa ..
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post #3 of 10 (permalink) Old 06-20-2006, 10:08 PM
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I've heard of racing engineers building V8's from Yamaha and Ducati engines like this too. Usually utilising heads, pistons, rods, etc. I'm sure its a good way of producing a screaming hi-power 2L compact V8 if you have enough money!

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post #4 of 10 (permalink) Old 06-20-2006, 11:17 PM
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Just had a look at the car he is building ... talk about laterial thinking, very different and strange.

Must have lots of money ...

ps: Remember it's all just opinions
'71 1750 Series 2 GTV: http://www.alfabb.com/bb/forums/1140899-post1.html
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post #5 of 10 (permalink) Old 06-21-2006, 05:45 AM
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Many years ago, Moto Guzzi built a 500 cc v8 for their race bikes, dual cam, 4 valve per cylinder, 2 carbs per cylinder and supposedly 150 hp. The only problem was that the torque curve wasw only from 17000 to 17500 rpm and they ran out of places to put gears in the transmission at a 9 speed. they went back to the old 500 single with the horizontal piston.
that looks like very nice work on the car and engine.
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post #6 of 10 (permalink) Old 06-23-2006, 08:21 AM
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Radical already built a car "Radical SR8" (and runs a racing series) with this kind of engine:


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post #7 of 10 (permalink) Old 06-25-2006, 05:45 AM
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the engine was designed around its use in the Radical... the Radical is the daddy if you like! p.s. got invited to have a test in one when it was a late prototype... OMG.... serious piece of kit, we spent the day playing with camber and castor, much fun! So fast... down the straights my slightly aerodynamically designed helmet with a small bib on the front was not aerodynamic enough and started trying to pull off my head... now thats what I call fast!


1966 2.0 Sprint GT race car, 1967 T/S GTA Replica, 1965 FIA App.K 1600 GTA, 1965 1600 GTA Stradale RHD, 1965 1600 GTA Stradale LHD, 1966 1600 Giulia GTC, 1991 S4 Spider, 1967 1600 Duetto, 1999 2.0 916GTV (soon to be sold!) and now replaced with 2002 3.0 V6 24v 916 GTV
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post #8 of 10 (permalink) Old 06-30-2006, 06:39 AM
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The RST V8 has the same concept. Probably ready for sale:

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post #9 of 10 (permalink) Old 06-30-2006, 07:39 AM Thread Starter
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That engine I know as well, and it is more expensive... $30,000 + if I am not mistaken...

1970 GTJr
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post #10 of 10 (permalink) Old 07-21-2006, 05:45 AM
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Originally Posted by Insoc
That engine I know as well, and it is more expensive... $30,000 + if I am not mistaken...

1970 GTJr
From Dennis himself:
"The v8 is being developed by someone else, I'm simply the first customer and test case. Production engines will be available in a couple of months. The cost is US $25K including ECU, injectors, flywheel, alternator, dry sump.
It does not include exhaust, clutch or plumbing, as this is about half the cost of the powertec and RST motors. Power is 375hp @10K, torque 210 lb-ft @6500, weight is about 220 lbs as described above."

Now that's serious power for not much weight!!
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