just read a thread on the iva test,just in the process of starting my build again after about a 3 year gap.(bad move by the look of it)i am useing a 2004 r1 fuel injection motor,radiator ex-up valve and clocks.now i have read that you will need a reverse gear box,do you think it is worth while continuing with the bike engine.or will it prove to costly,and is now a good time to swap?????

As far as I am aware the problems with bike engines and IVA are that a reverse gear is now compulsory and the ever present noise issue which can be solved with a carefully put together exhaust system.

I say go for it as changing over to a car engine will probably cost you just as much, if not more anyway!

I'm building a CEC btw, so my statement has no BEC builder bias

Talk to Russ Bost about a reverse setup.
His one isn't too expensive.

how mutch is not too expensive ??? good job i never got a prop made up otherwise that would have been money down the swanny

Don't forget noise test is now 98dB, i am having trouble getting 101 dB

Well mine cost £360 from lynxae but Russ's one is at least half that.
The main thing is to get the sprocket and you can source a starter to suit. I think he uses an MR2 one.

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Originally posted by marmot0
Don't forget noise test is now 98dB, i am having trouble getting 101 dB

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Description

I failed my first SVA due to noise, have just put an airbox on which has won me back around 10dB the induction roar was huge, I have also lagged the bonnet with accoustic foam

quote:

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Originally posted by marmot0
I failed my first SVA due to noise, have just put an airbox on which has won me back around 10dB the induction roar was huge, I have also lagged the bonnet with accoustic foam

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what sprocket and where does it go any pictures

I'll say it again CONTACT RUSS BOST!

nitram, whats the specs on that reverse?