McXpress Rx-1 - Max boost question

M

Martinmod

Free Member

Dec 10, 2007

18

1

3

• Dec 28, 2007

• #1

I have been running my Mcxpress rear mount on my RX-1 for 3 years with no problems. I am running 9 pounds of boost on pump gas and I am wondering,

- what is the max boost on pump?


-max boost on AV Gas?



thanks for any info,

 

W

Wheeline

Free Member

Apr 6, 2006

189

32

28

Eastern Washington

• Dec 28, 2007

• #2

stock motor?

 

M

Martinmod

Free Member

Dec 10, 2007

18

1

3

• Dec 28, 2007

• #3

stock motor ,with head gaskets done,

 

0

0007

Free Member

Nov 28, 2007

510

49

28

Vernon

• Dec 29, 2007

• #4

I ran mine up to 12lbs on 91, 3 head gasket's
Problem with turning up the boost is is just always feels like more

 

L

Linc

Active member

Nov 17, 2002

843

43

28

Pemberton

www.visionms.ca

• Dec 29, 2007

• #5

A few guys run 15 and 100LL,great fun.

 

W

Wheeline

Free Member

Apr 6, 2006

189

32

28

Eastern Washington

• Dec 29, 2007

• #6

according to a calculator I found on totallyamaha.com, with a .076 head gasket you can run about 11.5lbs on 92 octane at 6000ft. There is a lot of argument about the true motor octane of av gas so good luck on that one.

 

M

Martinmod

Free Member

Dec 10, 2007

18

1

3

• Dec 30, 2007

• #7

thanks for all the info guys. I have never had to adjust the boost, approx how many turns on the wastegate nut equals 1 pound of boost?

thanks

 

P

powdermuncher

Free Member

Nov 28, 2007

1,795

761

113

Yukon Canada

• Dec 30, 2007

• #8

I run one extra gasket straight Av gas up to 15 - 16 pounds 0 problem so far.
I personally don't know any one who has blown up a 4 stroke turbo sled on Av gas -- its good stuff. Just don't go nuts with the boost and you will be fine.
I like 12 to 14 lb for every day riding usually just leave it set there.