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Discussion Starter · #1 ·
Here is some pics from a modern project for an old vintage snomo racer...
Was a piston port motor: so were adding Banshee Reeds
 

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Discussion Starter · #3 ·
We're adding triple exhaust ports now. This was about 15hp/cylinder setup, and we expect to make well over 40hp/cylinder. Much of the work is what cannot be seen. But it's a fun project. Here's a pic as we started to remove some metal so we can "add" some metal for the exhaust.
 

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QUOTE (more-torque @ Feb 2 2009, 09:34 PM) index.php?act=findpost&pid=28890We're adding triple exhaust ports now. This was about 15hp/cylinder setup, and we expect to make well over 40hp/cylinder. Much of the work is what cannot be seen. But it's a fun project. Here's a pic as we started to remove some metal so we can "add" some metal for the exhaust.

I love it Nate!! This is where the fun factor comes into play, the times when we can experiment and see the good (or not so good LOL) results. What kind of application is this going in?
 

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QUOTE (bubba297 @ Feb 3 2009, 05:47 AM) index.php?act=findpost&pid=28943I love it Nate!! This is where the fun factor comes into play, the times when we can experiment and see the good (or not so good LOL) results. What kind of application is this going in?
Nice project! I have done alot of reed cage conversions and it takes alot of welding and patients, looks great!
 

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Discussion Starter · #9 ·
Yes, the intakes/reeds are the easy part for sure. Here is some more pics of the triple ports about ready to start porting. Rebuilding the fins is a little tricky too. You might be able to see that we have re-built the fin above and below already. They are "in the rough" at this stage, and we still have to finish the center one as you can see.
 

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QUOTE (more-torque @ Feb 4 2009, 10:08 PM) index.php?act=findpost&pid=29169Yes, the intakes/reeds are the easy part for sure. Here is some more pics of the triple ports about ready to start porting. Rebuilding the fins is a little tricky too. You might be able to see that we have re-built the fin above and below already. They are "in the rough" at this stage, and we still have to finish the center one as you can see.
The air cooled motors are the easier ones to do. We used to put h2 sleeves in the old rd 400 cyls. and add extra ports,cages etc.If you really want to get crafty you could turn those into water cooled,we also would do what your doing to yours and water cool the old 250cc odyssey cyls. WOW I FEEL OLD!!!!
 

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Discussion Starter · #11 ·
Sounds Great. The question is always whether you can make enough power gain to warant the effort. Here are some pics of the outside of the cylinders finished. We ended up having to remove/re-place 4 fins on each cylinder
, but here is what is looks like after a little more time:
 

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Discussion Starter · #14 ·
Good looking work Nate. I know a polaris 250 cyl with a reed mod runs a bunch better than when it's a piston port motor.
It ended up at about 90hp, from the 30ish that it had stock. That was around 3 times the stock power. It has been winning on the track too. It was a very fun peoject.
 

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Thanks for the update Nate, I was actually thinking about those a few weeks ago. That's really cool!!
 
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