Just information Gas Flowing

[john.p.clegg]

Have been looking at this for a while,he's not far from me and helped diagnose a faulty ABS sensor...

http://www.ebay.co.uk/itm/280489399531? ... 1438.l2649

but it looks like they chop what valve guide is protruding into the tracts to achieve better flow??

John

[rgh0]

I think this came up before a couple of years ago. The photos and specification data is not for a twin cam. They are clearly confused.

cheers
Rohan

[rgh0]

I certainly would not shorten the twinks valve stems they are to short already!. its common for people doing CNC porting to just machine of the valve stems in the process and fit new ones when finished. Maybe the photos of what ever head it is show part way through this process

cheers
Rohan