[m&m or vitos]

M & M all the way...Andy is straight forward and holds no punches...stands behind what he sells.....

[Plug chop & Problems...]

I had the same problem on mine... the positive wire for the coil was freyed at the connector...would run at idle and mid, hit wop throttle and not..some spit and sputter or nothing.

[How many HQ members own 4 mill Cub or Serval motors?]

# 7

 

#2

[cpi inframes how to tell big bore are small bore]

If you have access to a known set of small bores it's very easy to tell them apart. Where the header pipe joins the stinger pipe is clearly bigger on big bores. No need to measure anything. My buddy has a set and that's the only diff we see.

 

good point...these are small bore...had no access to any others...and several people i asked couldnt answer or would measure there own....oh well, just sharing what i learned.... they do run much better than the r2"s that were on my cub.

[cpi inframes how to tell big bore are small bore]

I think it is id, you need to contact cpi to find out exactly, or have someone on here check theirs.

 

I know t thread is really old..how ever picked up set of inframes for my bike..they were used, and couldnt get real answer as to how to tell apart from big or small... called CPI measure stinger welded to expansion chamber..OD 1" small bore... 1"1/8 is big bore..no other diff according to cpi...

[Afraid to trail ride...]

Forgot I posted this. guess I was having an off day. I been riding and got used to the washing off after ever ride. just got back from a 8 hour trip! Man, this thing flies

 

Was great meeting you today, your machine does not do bad at all...lol...