i have noticed some 4 cyl engines making more horse then my duke stock could one put one of these in fiero and would it be drivable?
meaning would u have enough trq to launch?

there was one person that was trying to put in 2 busa motors, but i think he scrapped the idea and move to something more feasable.

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First LX9 Fiero GT, 1987

yeah i read that i was thinking one transversly

[This message has been edited by Bremertonfiero (edited 10-28-2008).]

HUH?

Norm

wow finish highschool english kids i ment to write transversly but i was on the phone which doesnt help my poor spelling

This is possible,, you just have to decide what clutch and drive system .. the motorcycle clutch would not handle the weight..
With all the auto engines available this is only desireable as a novelty .
there use to be a Citroen with a 2 cylinder engine .a really ugly carThe first Honda civics were powered by modified M/C engines and not a very big one
there have been small cars powered by M/C engines
think about the Geo Metro it has a 3 cyl engine
It all depends how much effort and work you want to do.,,A large M/C with a fat guy at the wheel and a sidecar loaded with his super porker wife is close to the weight of a small car

start with the ...........................
........ Idea of a flywheel mounted on the out put shaft of the scooter engine
think about a diferential
If you got the weight of the Fiero low enough you could find a bike engine with the heaviest duty clutch and you could power it with the M/C clutch..you would have to replace it frequently
A harley clutch would power the car for a while and thier would be some super duty clutches available
an automatic may be easier to adapt,it would have reverse

[This message has been edited by uhlanstan (edited 10-28-2008).]

And you're going to use what transmission with what gear ratios to do this?

Bike transmissions would be perfect - sequential 5 or 6 speed, add an electric reverse and you're done. The problem is the weight, it would require a lot of torque to move the car, and bike engines usually do not deliver much torque.

You can see bike powered Lotus 7 kit cars, and other lightweight creations - they make awesome little cars, just not suitable in the Fiero.

daveg

i was just wondering i know first gear would need to incredibly low because the motorcyle engines i have seen put out around 50 ft pounds ot tourque but they can to it at around 10000 rpm.
i would think a lower gearing would mke this ideal for example the stock izuze fives speed (what i have in my car) has a 1st gear ratio of about (correct me if im wrong) 3.4:1 u would want something like 7.2:1 or better because u ahve half the torque then u could start using stock fiero greaing for the rest but lower the heck outa fith gear.

The more jokes on this staid forum the better jokes at my expense need no apoligy,keep them comming..
the best transmission would be an auto matic because of the clutch and drive issue
adapting a flywheel and clutch would be major undertakings this is difficult because of the smaller drive area you can use a chain drive to a clutch ,, the origina M/C drive has far less weight to move and the clutch is completely unsuitable
If I did this the automatic transmission is by far the best option because of the torque converter
the M/C engine could be hooked to the auto by drive chain,, or direct..there have been M/C with single plate clutches ,,I do not know what is on the M/C market now..
the automatic makes this simpler,you would use the reliable superfabulous T125
this is a for instance post ,, the difficuty requires a disciplined individual

[This message has been edited by uhlanstan (edited 10-28-2008).]

quote Originally posted by uhlanstan: ,, the difficuty requires a disciplined individual

You mean like . . . a ruler across the knuckles?

Norm

No the ruler accross the knuckles never works on gear head knuckle heads ..you gotta have an attractive lady bringing the whip or meaner devise down on your softtender bottom ,,real discipline...this will keep a fellow out of the garage for 6 months to a year,but once you start spanking her as she so richly deserves,, you will soon be on some project with renewed zeal cramming a honda 1990,s V4 into a lightened fiero..not practical,,but interesting better to go with the Buick aluminum V8..
this project would be easy with an automatic

[This message has been edited by uhlanstan (edited 10-28-2008).]

You would have a bogging dog on your hands at any lower RPM range, as torque does the work. If you want to drive around buzzing like a bee all the time with it wound up, go ahead. A Hayabusa pulls what, 700 lbs of bike? Think about it. Maybe The big Triumph at 2300 CCs, you need torque.

There's 2 "Smart" cars on you tube with hyabusa motors - nasty little things...

http://www.youtube.com/watch?v=oPQIizRp9ck

and one in a VW golf!

http://www.youtube.com/watch?v=oPQIizRp9ck

[This message has been edited by katatak (edited 10-28-2008).]

a 2008-2009 hayabusa weighs about 1/5th the lightest fieros (552lbs), and has 102.3 lbft of torque, and 171 hp. So, if you used a Busa motor, you would have enough torque to accelerate , but the clutch would definitely be too weak, and the gearing would need to be changed.

If you used two hayabusa motors and found a way to mount them together, you would technically double your torque (kinda like mounting one for each of the rear tires as opposed to 1 for both tires), and would also make the project much more feasible. Mounting one for each tire would be near impossible, so you would need to have a crankshaft machined out so that it stuck out the end of the motor and had a gear on it. That gear would then need to hook to a gear of the same size on the other engine. The problem you run into here, is that I don't think you're really doubling torque anymore, and if one engine is running weak it will drag the other down with it.

Another option would be to make a custom head that hooks to both motors so that you're actually making a V8 out of the 2 busas. This would also require a lot of work. In the end, the "most difficult" option might end up being the easiest, lol. That's the one involving one engine per rear tire.