>> Tom, The P-Ports will be NC milled. I don't think it is necessary
>> to thread the insert although this is what Jim Mederer says. I know
>> that others have not threaded and have not had problems. The angle
>> of the insert is another question. I would prefer it to be
>> perpendicular to the housing. However, this places the runner at a
>> weird angle if you intend to go over the top of engine. Better to
>> just have a couple of 90 degree bends that can be readily bought. I
>> am not locked into anything yet. The P-Port timing is still a
>> mystery to me. I tried to compare Paul Yaw's numbers with the tech
>> drawing of the Leman ports and they did not coincide. Maybe I did it
>> wrong. I would be happy to just copy the Power Sport ports, if
>> only I could. Jerry
>> --
>> Jerry Hey
>>
>> Tailwind & Rotary Engine Support
>>
>> http://www.j-winddesigns.com
>>
>> mailto:j-winddesigns@thegrid.net
>
>Jerry, you got the dimensions on the Leman engine. Why don't
> >you just copy that? What do you need the timing numbers for?
> >They are just academic anyway. If the port is in such and such
> >a location the timing is such and such. The two things are inextricably
>linked. I can't figure out what it is you are missing?
>There is no cam shaft timing to be set. There are no cam lobes
>to clock.
>
>Paul Lamar
All I have is the drawing that I hope is accurate but I don't really
know that it is. It is not dimensioned. Is it the actual
construction drawing or just a concept drawing that they used to
illustrate the article? If I had unlimited funds for rotor
housings and unlimited time to rebuild the engine over and over it
would not be a problem. Is there someone at Mazda who could provide
the information? I trust Lynn's personal experience just
transferring the port opening and closing events from the side
housing. That is solid information. Lynn's port opens later than
the Leman port as shown. Lynn, got any idea what hp you are
developing at 6000 rpm?
Don't get me wrong, I want to duplicate the Leman's ports. I agree
> with everything you have said about duplicating these ports. That is
what I want to do. In fact, I will pay $100.00 to anyone who can
irrefutably give me the Leman specs. Jerry
Jerry Hey
Tailwind & Rotary Engine Support
http://www.j-winddesigns.com
mailto:j-winddesigns@thegrid.net
Does Joy know about this? :-) Looking at the drawing there is absolutely
no doubt in my mind that it is accurate. If anything it is probably
more conservative than the Racing Beat P-ports.
Paul Lamar
I never saw the two view drawing before. It does give one more
confidence. Jerry Hey
Tailwind & Rotary Engine Support
http://www.j-winddesigns.com
mailto:j-winddesigns@thegrid.net
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