Getting close to MBT?

[dnb]

I'm getting a little worried by the amount of ignition timing I can add to the part-throttle areas of my Griff's ignition timing map.

Am I getting close to MBT? (There's very little chance of knock occuring before MBT here)

I know people say they can take bucket-loads of timing, but 40 degrees at 2000 RPM is a little silly in my book!

[350Matt]

Sounds like it might be time to get it on a hub dyno chap, or a good rolling road, look for somewhere thats got lots of cooling air blasted over and under if possible.

From memory I was using about 38° at 20% throttle in that area

Did you get it through the MOT in th end?

Matt

[dnb]

Yes. No problems with MOTs now.

Dyno is planned, but I'm still waiting for some interior bits (like a 2nd seat!)

[350Matt]

What was the fix for the MOT then?

If you don't mind me asking?

Matt

[freddies_dad]

dnb said:

I'm getting a little worried by the amount of ignition timing I can add to the part-throttle areas of my Griff's ignition timing map.

Am I getting close to MBT? (There's very little chance of knock occuring before MBT here)

I know people say they can take bucket-loads of timing, but 40 degrees at 2000 RPM is a little silly in my book!

I'm follow you.

[dnb]

350Matt said:

What was the fix for the MOT then?

If you don't mind me asking?

Matt

Not at all! I cheated and put a cat on, as I simply didn't have time to mess about with anything else, at least until I'd got a decent amount of mapping miles done.