motorbike powered cars

[herpsuk]

just general questions about motorbike engined cars

firstly, am i right in thinking that if i have a 1litre car engine in one car and a 1l bike engine in a similar car, the bike engined one would be more pwoerul? as the Yam R1 has 170bhp :chin:

also how do you attach a sprocket to the back to drive the back wheels??

thnaks

J

 

[pinin__prestatyn]

Of course, Motobike engines are far more powerful than their Car counterparts. Sprocket? no idea sorry.

 

[FuzzyPanda]

They lack torque though, which is much needed considering a Panda (for example) weighs about 3 or 4 times that of a bike...

 

[col7104]

My guess is you would need a sprocket adaptor to drive a propshaft to a rear diff/beam assembly.

More power but as said, not much torque, makes up for it in revs though

 

[x Alex x]

what's wrong with just having a bike and car

 

[richardmk1ut]

A decent bike engine will certainly make it shift. I have a Lotus 7 style kit car with a 2003 R1 in it and there aren't many things around that will live with it up to about 110mph. Also rally with a mate in A Mini with the same engine and that does the business, regularly beating all but the best Impreza's on tarmac rallies. You need to get a sprocket adapter to enable you to bolt a prop to take drive to whatever diff arrangement you decide on. www.zcars.org.uk for some ideas.

 

[paulbfd]

www.zcars.org.uk for some ideas.

Then www.holeshotracing.co.uk for the 550bhp turbo kit.

 

[faster4_tec]

I'm interested in sticking some kind of wild big single cylinder (4stroke 4valve) bike engine in a trabant

doable for £500?? we'll see

 

[Liam]

For a start the only place the engine can go is the back so you get a whole new sprocketed axle.

Basically you cut a huge hole and weld in mounts for a subframe.

Liam

 

[Goldie Punto]

Ive seen vidoes of a smart car with a gsxr 1000 engine in there and all i can say is it will make you want one.

 

[herpsuk]

http://thekneeslider.com/archives/2005/06/08/smart-car-plus-gsxr-equals-smartuki-a-very-smart-car

:chin:

ill reply morelaters as im in lesson lol

 

[faster4_tec]

the reason I want a single in there, is it will easily fit (With g;box if its upto any use in such a comparitvly heavy thing) into the engine space left by the massive two single's bolted together affair that trabants use

 

[richardmk1ut]

For a start the only place the engine can go is the back so you get a whole new sprocketed axle.

Basically you cut a huge hole and weld in mounts for a subframe.

Liam

Doesn't have to be the case. Our R1 engined rally Mini was the first that Chris at Z-Cars built and due to rally regulations the engine is in the front. Custom 2 piece prop to a Sierra diff housing with a TranX LSD and custom shafts.

 

[x Alex x]

wow a mini with an R1 engine must be Sh*t hot!

 

[herpsuk]

thanks guys

ive been looking at all sorts of projects and all semm feasable but with lots of money and such and then i thought maybe this cud be a fun one :chin:

does anyone know any sites that sell the parts and sites with informaiton on how to connect the cog to the rear axle?

Thanks

J

 

[faster4_tec]

you could weld it, but IMO it would be too brittle, probably be offcentre and would shear fairly soon.


I think the Z cars boys get custom drive shafts made up (shaft between bike gearbox and rear diff).

the rear half is the std shaft that came with the car.
and the front half is some wild CNC'd output job from the bike gearbox, with maybe a split pin affair (or big eff off bolt) that connects the end (custom end) of the driveshaft.


to be honest putting a bike engine in, is fair simple, mainly because they are nearly self containted (if air cooled its as simple aspie!!) and they weigh nothing so you can hoik one around on your own.
but the difficulty IS getting the transmissions hooked up.

AND FFS don't use a chain!!!!

 

[Liam]

Doesn't have to be the case. Our R1 engined rally Mini was the first that Chris at Z-Cars built and due to rally regulations the engine is in the front. Custom 2 piece prop to a Sierra diff housing with a TranX LSD and custom shafts.

I was giving out duff info, did speak to Chris at Z cars 2 years ago and at that time front engine was a no go. Hmm where is my cinq when i need it now!

Liam

 

[faster4_tec]

tis not impossible!!!!

I reckon it could be done as above, with some kind of WILD (emphosis on wild) cnc'd output piece from teh gbox (instead of the sprocket) and get the original driveshaft cut up.


that OR use the exisitng trabbie gearbox (tis RWD anyway) and bolt the engine onto that (they have a transverese engine layout too).

 

[faster4_tec]

this is the engine it will be replacing

and if I could get my hands on a good working one for under £500 then thats what i would be using, but there are not many left, and they cost quite a lot, as they tend to be rebuilt using homemade parts (new parts dissapeared from shelves about 5year ago )


they are TINY

hence why it would have to be a single to replace it

 

[richardmk1ut]

tis not impossible!!!!

I reckon it could be done as above, with some kind of WILD (emphosis on wild) cnc'd output piece from teh gbox (instead of the sprocket) and get the original driveshaft cut up.


that OR use the exisitng trabbie gearbox (tis RWD anyway) and bolt the engine onto that (they have a transverese engine layout too).

Sprocket adaptors are widely available for most of the popular bike engines. Simply undo the large nut, take off output sprocket and put the adaptor on in it's place and this has mounting holes in it to bolt a prop to. This is if you are running the engine in front as in our Mini and my kit car. If you put the engine in the back you simply mount the engine in the same orientation as the bike and use a chain to drive the diff as most of Z-cars are done.
Either way you use the bike gearbox, 6 speed sequential box