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Big Bang r1
CRAIGR - 7/6/20 at 08:53 AM

Anyone used a Big Bang r1 engine in their kit car . Been offered a complete setup still in the damaged bike .Seems mixed reviews .


CosKev3 - 7/6/20 at 09:19 AM

Seen videos on YouTube, sure it was a MK.

Like most modern bike engines,tall engine so you need a massive bonnet bulge or the air box sticking out


CosKev3 - 7/6/20 at 09:21 AM

https://youtu.be/1ZtWyB2XdYM


CRAIGR - 7/6/20 at 09:29 AM

Not sure I’d be able to see over it in my Striker lol


adithorp - 7/6/20 at 06:10 PM

quote:
Originally posted by CRAIGR
Not sure I’d be able to see over it in my Striker lol


In your case, I'm not sure the engines to blame for that


CRAIGR - 7/6/20 at 06:13 PM

Haha Adi. Hope you are well mate . Any thoughts on this


TimC - 7/6/20 at 06:56 PM

They do sound the business.
https://youtu.be/ahhCNZHV3Fw

https://youtu.be/RfUFDXNk0yI


adithorp - 8/6/20 at 06:42 AM

Compared with the previous motors they make less power but because of the way it's delivered (in the bike) it's more usable. Apparently (according to those I've asked) they can get on the power earlier without it trying to throw them in a ditch. In a car that's not so much of a problem and you've just got less power.

Not sure about the failure issues. That could just be poor build/conversion design putting it in a car... We'll only know that once someone figures out a way to stop it happening and let's us know.

Like Tim says though, they sound amazing.


CRAIGR - 8/6/20 at 12:12 PM

Failure issues Adi . Not seen those


adithorp - 8/6/20 at 02:30 PM

Good question Craig. I'd have sworn I'd read fairly recently that folks had suffered issues but I'm damned if I can find anything now... As you were.


baz-R - 19/6/20 at 09:07 AM

im not sure it would be so kind on the driveline , normal bike engines conversions can, hop out of gear, bang out the boxes or fail early if there is no rubber crush to put a bit of give in the drive like a motorbike would have in its rear wheel.

a big bang fires in pairs to offer the traction of a big twin but give the near performance of a 4cyl in a bike

your putting so much more load buy putting a bike engine in a car and the bigger power pulses and gaps between are going to exadurate the problem i would say?


SPYDER - 19/6/20 at 11:42 AM

quote:
Originally posted by baz-R
im not sure it would be so kind on the driveline , normal bike engines conversions can, hop out of gear, bang out the boxes or fail early if there is no rubber crush to put a bit of give in the drive like a motorbike would have in its rear wheel.

a big bang fires in pairs to offer the traction of a big twin but give the near performance of a 4cyl in a bike

your putting so much more load buy putting a bike engine in a car and the bigger power pulses and gaps between are going to exadurate the problem i would say?


A "true" Big Bang engine might fire in pairs but the R1 variant doesn't. It does have unequal firing spacing of 270-90-180-90 but the cylinders all fire separately.
I'd happily use one in a BEC but I would make sure that the engine came with it's ECU and all necessary sensors etc to make it work as not all aftermarket ECUs will be suitable.
It would have to be cheap though, to stop me using a CBR1000RR engine.


adithorp - 19/6/20 at 02:28 PM

quote:
Originally posted by baz-R
im not sure it would be so kind on the driveline , normal bike engines conversions can, hop out of gear, bang out the boxes or fail early if there is no rubber crush to put a bit of give in the drive like a motorbike would have in its rear wheel.

a big bang fires in pairs to offer the traction of a big twin but give the near performance of a 4cyl in a bike

your putting so much more load buy putting a bike engine in a car and the bigger power pulses and gaps between are going to exadurate the problem i would say?


Which is why most BECs have a cush-tube in the prop'.