relieving the exhaust bridge

[evaneyeball]

i have a 86 cylinder, so when you talk about relieving the exhaust bridge that does that mean when you bore the cylinder

[croat1]

Some good reading:

http://blog.wiseco.com/two-stroke-how-to-relieving-the-exhaust-bridge-and-drilling-lubrication-holes?hs_amp=true

[broken1]

Great info. Thanks Joe.

[The norm]

That article hits the nail on the head! Heat causes expansion and the thin exhaust bridge will grow faster and cause a seizure possibly or at the least it will cause scoring. Scoring in the cylinder wall will cause loss of compression.
Loren