The secondary port...what looks as if to be another spark plug port...is a compression port. Should you desire to have a compression release installed. This was common practice for having a comprtession release back in the 70\´s. It was good for turns in tight places. Of course ..we are talking ..dirt racing/riding.
We invite you to introduce yourself by a few sentences if you are new to
this discussion group. Enter your e-mail to join the forum and get notifcations on new messages. Or post your question,
answer or comment as a guest. We have just improved this discussion forum and expect the number of users to increase.
More 1978 Yamaha IT 250 E information
Our discussion groups are intended for short messages. We also welcome more extensive motorcycle reviews.
Bikez also recommends that you check out the technical
data and the riders' rating for the 78 Yamaha IT 250 E.
You can also rate it yourself. Use our efficient motorcycle
classifieds to sell or
this bike. Your motorbike gets a high quality presentation. Ads are free.