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Old 01-30-2013, 02:01 AM   #85
Road Hog
Joined: Apr 2006
Location: Aussie Land
Oddometer: 3,789
Originally Posted by JMo (& piglet) View Post
Thanks Kasuyaho - that is good information!

It so happens that Rally Raid are just up the road from Cosworth Engineering in Northamptonshire (as many people know, that county is essentially the hub of F1 engineering in the UK) and John has already been talking with their development guys about exactly this issue.

He has a profile already mapped that ought to reinstate the compression ratio to where we want/need it, based on the new stroke characteristics, and will be machining a prototype piston on his own CNC machine in the next few days, together with the custom crank...

Nerdy photos of shiny metal to follow soon I hope!

Thats the way to do it for sure, talking to Cosworth is the go.

The guy that did my head work runs Top Bike.

The guy who did my valves "650R" was involved in the development
of the Repco / Brabham F1 engine etc etc
And later the Honda F1 engine.
Valve train.
A bit of trivia Jenny, the 650R runs the same size valves as the Honda F3 engine.

And Dave's where i used to work "USA" held many NHRA records over 30 years,
had a porting shop and consulted to Edelbrock and camshaft manufacturers etc etc

As Henry Ford said,
I may not know the answers to your questions,
but i employ people who do.

Looking forward to seeing some pics and seeing how it all comes together
KASUYAHO is offline   Reply With Quote