coffman tail pipe mod. 2 mm. pictures

sxr951 · 07-29-2009, 12:46 PM

coffman tail pipe mod. 2 mm. pictures
when bill spoke of wideing the tail pipe 2 mm to keep pistons running cooler. did he mean the inner pipe? or outter as this pic shows.

Bill O'Neal · 07-29-2009, 01:17 PM

He meant the inner pipe. Enlarging the outer pipe will do nothing.

sxr951 · 07-29-2009, 02:09 PM

rossiers stinger is already bigger than coffman. what does a smaller stinger do? give u more top end?

Bullett55 · 07-31-2009, 11:12 PM

Quote:

Originally Posted by sxr951

rossiers stinger is already bigger than coffman. what does a smaller stinger do? give u more top end?

What he said please... THX

Bill O'Neal · 08-03-2009, 01:53 PM

If the EGT is high and/or you are sufferring detonation problems, enlarging the stinger can relieve the backpressures in the tuned pipe and help control piston heat and detonation.