91HR Pipe - What is your preference

[John Knight]

Running a CMB 91HR in a rigger (RR), what is:

1. Your pipe of preference?

2. The pipe length?

Would like to hear your comments. I want to ensure smooth transition throughout all throttle range.

Let me know.

 

[ALLAN YUEN]

I knew that better improve CMB 91VAC than HR little different sleeve. anyway Contact Stu Barr He will help you and he knew his sercet modded Good Luck!

 

[John Knight]

I knew that better improve CMB 91VAC than HR little different sleeve. anyway Contact Stu Barr He will help you and he knew his sercet modded Good Luck!

HR and NOT the VAC. I know it can be uograded but am looking for an answer to the questions posed.

 

[Daniel Richard]

My Dad is running the CMB 67/80 pipe. I don't remember the length but it is showing a lot of promise. This is the pipe Stu recommended.

 

[ALLAN YUEN]

I knew that better improve CMB 91VAC than HR little different sleeve. anyway Contact Stu Barr He will help you and he knew his sercet modded Good Luck!

HR and NOT the VAC. I know it can be uograded but am looking for an answer to the questions posed.

Oh I see I l like better AA90 pipe fron Al Hobbs ( drilled out big hole into stinger) so use CMB header 22mm O.D and set up 12.75" @ adjust -/+.25" great easy all trottle range

I looked at Don F's Jagaur IIITwin . he use CMB AB 67 black pipe at hobart last sept

 

[javier molina]

CMB 67/80 pipe 11 1/2 pipe lenth. Good thru all ranges on the throttle. Can be purchased thru Stu Barr.

Javi

 

[dwilfong]

MAC 13cc with the stinger drilled to .470 at 11 1/2"

David

 

[gil sonsino]

CMDI Parabolic .84 with opened stinger at 11".

Gill