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PostPosted: Tue Jan 08, 2019 2:42 am 
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848cc
848cc

Joined: Sat Mar 01, 2014 2:29 pm
Posts: 180
Location: Maryborough, Qld
Thanks Ian. That was a really good article. I've read a few things from Keith Calver but I must have missed that one. Interesting thing was that the better valve sizes for the small bore engine are 31mm/26.4mm.


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PostPosted: Thu Jan 10, 2019 3:51 pm 
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848cc
848cc

Joined: Wed Jul 02, 2014 11:38 am
Posts: 450
Yes mate the ports in my crossflow are 30mm I have no intention of making them bigger.
The shape of the intakes is really nice .The exhausts are quite large .Not sure why .Will be in the car shortly after lots of things sorted out.
Trust the blokes with flow benches and dyno and years of experience.You will find they can be secretive also
David Vizard had no secrets.He moved to bigger motors.


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PostPosted: Wed Jan 30, 2019 12:05 pm 
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848cc
848cc

Joined: Wed Dec 05, 2018 5:13 am
Posts: 40
We had our head ported and flowed by Ian Fahey, and he was strictly after torque. He maintained optimum air speed as he wasn't interested in chasing horsepower as it was being built as a high performance street engine.


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PostPosted: Sat Feb 23, 2019 2:23 pm 
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848cc
848cc

Joined: Sat Mar 01, 2014 2:29 pm
Posts: 180
Location: Maryborough, Qld
Toy444 do you have any pictures of the head?


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PostPosted: Sat Feb 23, 2019 8:29 pm 
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848cc
848cc

Joined: Sun Apr 17, 2016 9:33 pm
Posts: 42
Location: Melburn
NOT850 wrote:
Toy444 do you have any pictures of the head?

Second that!


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PostPosted: Fri Mar 08, 2019 9:32 am 
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848cc
848cc

Joined: Wed Dec 05, 2018 5:13 am
Posts: 40
Sorry guy's, unfortuantely not...Bob Rowntree started assembling the engine soon after he had received the head back from Ian.


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