The beast lives , my NC30 with a VFR750 engine on the Dyno

[arsey30]

Mike is giving it to me for a while to check over.
Whilst it is apart, I will take some more detailed photos and post up

Dave.

[w00dzy]

Looks interesting..

how about this http://cgi.ebay.co.uk/ws/eBayISAPI.dll? ... :MESELX:IT

Its a shame to sell the wee beasty

[ibby4585]

Woodsy anymore piccys please??

Thanks Kris

[w00dzy]

I will get some pictures at the weekend once it has been cleaned up. I took her for a ride last weekend and got caught out in the rain!

I also have lots of spares.

[ibby4585]

What's the bhp?

Kris

[w00dzy]

I havent put the bike on a dyno myself..

It should be around the specs stated here..

http://motoprofi.com/motospecspictures/ ... -1990.html

[g-force performance]

Hey Mike, just a quick question for you. Have you guys ever done any engine development with the 5th generation VFR800 engine? I know its a close cousin to the RC45 engine in many ways, what would it take to get a set of decent cams made for it?

"Decent Cams" is a hard topic. we're still trying that one for the NC-30. I know of Kent Cams and Piper cams in the UK and here we have Megacycle Cams and Web Cams. Nobody likes custom cams much anymore. They want to be able to make 30 to 300 sets at a time or it's not worth their effort.

I have worked on Factory (American Honda) RC-30s, RC-45s and several older VFR700s and VFR750s (all pre-2001). They're all basically the same, but the RC45 has changed a bit to be mre simplified. Is the 800 really closer to the 45 than the 30? That could be interesting. I would be willing to develop a newer VFR800. I had another guy here ask me the same thing recently. A Honda V-4 is a Honda V-4. a few things change here and there, but all the same principles apply.

Mike Norman

[Neosophist]

Hey Mike, just a quick question for you. Have you guys ever done any engine development with the 5th generation VFR800 engine? I know its a close cousin to the RC45 engine in many ways, what would it take to get a set of decent cams made for it?

"Decent Cams" is a hard topic. we're still trying that one for the NC-30. I know of Kent Cams and Piper cams in the UK and here we have Megacycle Cams and Web Cams. Nobody likes custom cams much anymore. They want to be able to make 30 to 300 sets at a time or it's not worth their effort.

I have worked on Factory (American Honda) RC-30s, RC-45s and several older VFR700s and VFR750s (all pre-2001). They're all basically the same, but the RC45 has changed a bit to be mre simplified. Is the 800 really closer to the 45 than the 30? That could be interesting. I would be willing to develop a newer VFR800. I had another guy here ask me the same thing recently. A Honda V-4 is a Honda V-4. a few things change here and there, but all the same principles apply.

Mike Norman

From wikipedia...

Rather than being a direct development of the previous carbureted VFR750F engine, the VFR800 engine was a detuned and longer-stroke power plant based on the fuel-injected RC45 race engine. The RVF750R RC45 engine, although a development of the VFR750R RC30 and originally derived from the VFR750F RC24, was very different as the gear drive to the cams was moved from the centre of the engine to the one side, similar to the CBR250. Tuned for road use in the VFR800, fuel injection provided excellent driveability and power was slightly increased over the VFR750. The most noticeable change, however, was that the torque figures were substantially improved from the previous model right up to the 11,750 rpm red line. All VFR800 models use fuel injection instead of carburetors for fuel-air mixing. In 2000, Honda updated the fifth generation VFR (RC46) with a catalytic converter, oxygen sensors, and an EFI system that would enter closed-loop mode under highway (cruising) operation.

[hunter]

"Decent Cams" is a hard topic. we're still trying that one for the NC-30. I know of Kent Cams and Piper cams in the UK and here we have Megacycle Cams and Web Cams. Nobody likes custom cams much anymore. They want to be able to make 30 to 300 sets at a time or it's not worth their effort.

Mike Norman

I got some cams re-profiled by a company in the UK called joy cams,
they made the motor very responsive,it reved like an inline motor,
still have them to,will build another motor one day.

[Polarbear]

I got some cams re-profiled by a company in the UK called joy cams,
they made the motor very responsive,it reved like an inline motor,
still have them to,will build another motor one day.

you mean your nc30 cams were re-profiled? how much did joy cams charge for that m8?