PDA

View Full Version : 250r motor finally done



8586250r
02-02-2011, 11:42 AM
Just got my motor finished its got a trinity pro mx port job, cr head gasket shaven head, fmf fatty and fmf silencer,carbon fiber reeds, reed spacer, wiseco boost ported piston. Is this motor setup good? And Lookin for input o
n a cool head would i need to use a 17cc dome or less? Or more?

mmartin
02-02-2011, 12:35 PM
I just recently completed my motor build also. I cannot say one way or the other as far as which dome you should use but I can say that I have a cool head on mine and also have several different domes. I ended up using my 18cc dome and I ran compression tests and its pumping rite at 218psi. I'm now running leaded 112 octane VP fuel and I am very pleased with the power increase that mine is producing. But as far as headgaskets I stuck with the oem gasket and did not alter it in any way. Also for the most part are mods sound fairly close to being the same with the exception of I used an airbox eliminator and a 39mm PWK carb and a V-Force reed cage. I hope this gives you the info. that your looking for.

ceaserthethird
02-02-2011, 12:53 PM
You'll need to do a compression check see what it's Putting out
So run the motor get it hot than quickly do a compression check.

Before anything run race fuel 110 !

What carb ? Needle number & clip position, main jet , pilot jet ?

Since u have a shaved head with a CR gasket just try that & see what your getting report back with numbers.

8586250r
02-02-2011, 03:43 PM
Kehin 34mm carb a cgl needle and is set 2nd slot the main jet is 172 and pilot is 52

Saleenster
02-03-2011, 03:40 AM
why people continue to run gaskets on the head is a mystery to me....

NOS_350X
02-03-2011, 03:42 AM
why people continue to run gaskets on the head is a mystery to me....

Because most dont know any better. I got $3 in sealing my head.

ceaserthethird
02-03-2011, 12:12 PM
Main jet & pilot are about right, I would bump the main
To 185 jet to be safe and break it in.

You'll need to do a Compression Check, report back with numbers.

8586250r
02-03-2011, 01:56 PM
Main jet & pilot are about right, I would bump the main
To 185 jet to be safe and break it in.

You'll need to do a Compression Check, report back with numbers.

Compression is 210psi

200XMichigan
02-03-2011, 02:12 PM
why people continue to run gaskets on the head is a mystery to me....

What do you use instead?

Saleenster
02-03-2011, 07:55 PM
What do you use instead?

nothing, O ring the head.

ceaserthethird
02-03-2011, 09:07 PM
Ok, you'll need Race Gas - VP 110 octane

O - rings are really nice to have, you'll never need a gasket
Just o-rings.