4-stroke Motor Builders

2F4A
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137
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5/17/2019
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NL
2F4A 7/25/2020 2:15pm
7/25/2020 2:15pm
Vollenberg obviously
Riesenberg448
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2042
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9/22/2006
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Blaine, MN US
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Riesenberg448 7/26/2020 3:25am
7/26/2020 3:25am
Some good builders on the list with proven results, some.... maybe not.

The GYTR stuff is really good, you can get better but marginally.

The engine guys at RT have tested nearly everything available for the Rockwell/Nic blast/Ryan Clark team and have found a lot of small gains to make a big change in the yz250f.

Depends what you’re looking for, but a good head goes a long ways. The rest follows.
Ghostrider145 7/26/2020 4:59pm
7/26/2020 4:59pm
Jack_Wagon wrote:
Dan Lamey (Dasa Racing) probably knows more about a YZ250F than anybody.
PTshox wrote:
Dan will know that YZ250F head probably better than anyone. Very nice guy too. CNC porting machine in his shop. Works closely with WebCams too. They...
Dan will know that YZ250F head probably better than anyone. Very nice guy too. CNC porting machine in his shop. Works closely with WebCams too. They are good friends.

Note: More than one factory team has their heads CNC ported by Dan. He's behind the scene doing a lot of work for names we all know very well.
Was he not who Two Two Motorsports used for multiple seasons? Dasa has been around a while.
•Dasa
•Tom Morgan
•TLR (Todd LaChance)
•XPR (Chad)
•Twisted Development
•TZR (Tom)

Pretty sure you can find one in this lineup...

Ghost

The Shop

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brocsdad
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Thompsons Station, TN US
brocsdad 7/27/2020 7:36am
7/27/2020 7:36am
Jack_Wagon wrote:
Dan Lamey (Dasa Racing) probably knows more about a YZ250F than anybody.
PTshox wrote:
Dan will know that YZ250F head probably better than anyone. Very nice guy too. CNC porting machine in his shop. Works closely with WebCams too. They...
Dan will know that YZ250F head probably better than anyone. Very nice guy too. CNC porting machine in his shop. Works closely with WebCams too. They are good friends.

Note: More than one factory team has their heads CNC ported by Dan. He's behind the scene doing a lot of work for names we all know very well.
Ghostrider145 wrote:
Was he not who Two Two Motorsports used for multiple seasons? Dasa has been around a while. •Dasa •Tom Morgan •TLR (Todd LaChance) •XPR (Chad) •Twisted...
Was he not who Two Two Motorsports used for multiple seasons? Dasa has been around a while.
•Dasa
•Tom Morgan
•TLR (Todd LaChance)
•XPR (Chad)
•Twisted Development
•TZR (Tom)

Pretty sure you can find one in this lineup...

Ghost
I left messages with Twisted, Dasa and Tom Zont last week. With Loretta’s and the 1st Pro race coming up they could be busy.

Hopefully they will respond soon.

Thanks to everyone for the input!
1

Pit Row

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