Author Topic: Question about Sphynx, Puma, Saber-tooth and other big bore cylinders (Read 3533 times)

Black Sheep · « **on:** April 05, 2015, 10:14:25 PM »

Sphynx, Puma, Saber-tooth and other big-bore or powervalve cylinders.

Do any of these, or any other big bore cylinders not fit in the ATC 250R frame?

Hawaiiysr · « **Reply #1 on:** April 05, 2015, 11:43:04 PM »

Yes sir!

Black Sheep · « **Reply #2 on:** April 06, 2015, 12:14:15 AM »

uhm...ok what ones don't fit

rk88r · « **Reply #3 on:** April 06, 2015, 07:43:13 AM »

I think spark plug clearance is the issue.

Pumashine · « **Reply #4 on:** April 06, 2015, 09:41:41 AM »

No problem with the Puma

JesseA420 · « **Reply #5 on:** April 06, 2015, 09:48:15 AM »

spark plugs will always be close to frame, but squeezing huge intake tracts between that small area between the upper shock mount and the frame rail is going to be an issue id think.

dave moores new chassis addresses both these issues. i would contact him.

Black Sheep · « **Reply #6 on:** April 06, 2015, 10:00:31 AM »

I'm building my own frames for big bore 250R/500R engines. Intake clearance won't be an issue. Just curious to what problems the big bore 250R cylinders have with stock frames

Author Topic: Question about Sphynx, Puma, Saber-tooth and other big bore cylinders (Read 3533 times)

Black Sheep

Question about Sphynx, Puma, Saber-tooth and other big bore cylinders

Hawaiiysr

Question about Sphinx, Puma, Saber-tooth and other big bore cylinders

Black Sheep

Question about Sphinx, Puma, Saber-tooth and other big bore cylinders

rk88r

Question about Sphinx, Puma, Saber-tooth and other big bore cylinders

Pumashine

Question about Sphinx, Puma, Saber-tooth and other big bore cylinders

JesseA420

Question about Sphinx, Puma, Saber-tooth and other big bore cylinders

Black Sheep

Question about Sphinx, Puma, Saber-tooth and other big bore cylinders