30-35 heads. Whats the difference?

Post by **skinnydog0_0** » Tue Jul 03, 2012 7:24 pm

Is there any difference between the heads on the 30 and the 35?
Not interested in cams just the inlet and exhaust ports really and valves.
Cheers

Post by **CMSMJ1** » Tue Jul 03, 2012 8:49 pm

ports are different - pretty sure Cammo has the pic ready to post.

If I find it I'll stick it up

In fact - mngforce blog has the details I am sure

Post by **skinnydog0_0** » Tue Jul 03, 2012 8:57 pm

Cheers Bud,
I'll have a look at mikes blog.
Thanks

Post by **Cammo** » Wed Jul 04, 2012 2:29 am

CMSMJ1 wrote:ports are different - pretty sure Cammo has the pic ready to post.

lol I don't have that pic (yet) Mark!

scooble · Post by **scooble** » Wed Jul 04, 2012 10:23 am

I heard that the inlet ports are narrower by 1mm not sure if its true. Cams are different too (duration), but do fit the NC30.

Post by **CMSMJ1** » Wed Jul 04, 2012 11:15 am

found the pic.

Post by **Neosophist** » Wed Jul 04, 2012 11:25 am

CMSMJ1 wrote:found the pic.

Valve seats are different (19mm/20mm) and the intake size is narrower to impove air velocity.

What are your intentions?

The changes were done to make it a smoother road goign bike.

Post by **Cammo** » Wed Jul 04, 2012 11:27 am

I'd be interested to hear from Mike N why he chooses to use rvf heads.

I imagine with narrower ports the rvf heads leave more material to shape them to his specs?

Post by **skinnydog0_0** » Wed Jul 04, 2012 5:54 pm

Thanks guys,
Thanks for that pic Mark, i knew i had seen it somewhere

I have some RVF heads fitted that have been polished and possibly worked a little, and wanted to try some standard heads for a comparison on power. It's for my race bike, so not to worried about fuel comsumption or slow running.
I have a set of 30 heads that i may send away to get sorted if the 35 ones are to hard to come bye.

30-35 heads. Whats the difference?

30-35 heads. Whats the difference?

Re: 30-35 heads. Whats the difference?

Re: 30-35 heads. Whats the difference?

Re: 30-35 heads. Whats the difference?

Re: 30-35 heads. Whats the difference?

Re: 30-35 heads. Whats the difference?

Re: 30-35 heads. Whats the difference?

Re: 30-35 heads. Whats the difference?

Re: 30-35 heads. Whats the difference?