Jump to content

Question about domes 20cc or 21 cc for pump gas


Emhyr

Recommended Posts

Hi, now i'm running stock head (i think it has 22cc domes)

 

I was wondering could i run 20cc domes? in my country i can get pump gas like 95 or 98 octan

 

my mods:

 

0.20 over

jugs port matched to the cases

exhaust port polished to the mirror

+ 4 timming (modded stock plate)

T5 kit with toomey neddle 300main and 27.5 pilot - i'm on a sea level

airbox with lid on it (snorkel removed and instaled uni airbox vents 8pcs)

uni stage 2 airfilter

about 130-135psi on stock head now

 

i want to buy some prodesign cool head, but don't know which domes would be better (safe) 20cc or 21cc, need some advice from bhq ;-)

Link to comment
Share on other sites

yep it's milled a little bit like 0.001 and it's fresh rebuild less than 2hrs of riding, if it depends i have hot rod crank with stock stroke NOT welded too

 

i know 21cc will be fine, but 20cc will give me a little mor comp, my friends bike has a 170psi but i don't know his domes size and it runs fine on 95oct fuel

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
×
×
  • Create New...