Can you make tools from plaster?

[DIYer]

Thanks tonyfoale! We've added your Flow Testing Spacers to our Motorcycle Engine category,
as well as to your builder page: tonyfoale's Homemade Tools. Your receipt:

Flow Testing Spacers by tonyfoale

tags: motorcycle, valve, measurement

[tonyfoale]

Fascinating stuff Tony, the graph result is impressive.
A lot of tuners will keep their work to themselves to keep an edge, I like the way you share it with us.
Regards
Alan

Alan, (and any others of course)

Here is a link to some tests and results as promised. https://www.dropbox.com/s/v0vox1ygm0...tests.pdf?dl=0
This was from a few years ago and better results have been achieved since then.
Thanks for your interest.

[crazypj]

I thought the same approach could be used on Harley-Davidson Sportster 'Evo' heads, the original ports make an updraft intake,which is also present on aftermarket heads. I've looked at them pretty close and it seems there is plenty of material before you hit spring seats.
They were only making around 44~45bhp at wheel which is pretty pathetic for 883cc

[vogiatzakis]

You are a legent mr Tony thanks for all this posts

Way ahead of you. Have a look at https://motochassis.com/FileDump/AmalMk2.pdf

[rickomatic2006]

Your thought process and ingenuity remind me of the late John Britton and Jeff Henise. Both which have done great things in motorcycle racing. Great reading! Thanks! Rick