Throttle Body Sync - Looking for your thoughts

Started by 2 Wheel Wanderer, May 26, 2010, 05:39:50 PM

Previous topic - Next topic

seevtsaab

Just to keep the thread going, I think I've learned something common, firsthand.
Set my TB sync at typical cruising RPM's, 4K-5K (good at both).

Based on vibrations only, (IZ_ mirror measurement, right hand finger tips numb) sync might be slightly
worse now. Still runs great.

But it dawned on me, no load 4K-5K may be diffrent throttle than cruising 4K - 5K, perhaps should sync to 6K - 7K?
(neighbors will love that). NOW I'm recalling reading that somewhere?

I will say, though I didn't check carefully, previous sync was good at 4K, jumped out at 5K and I think stayed out / got worse as revs climbed (wasn't paying close attention and trying not to hold the revs that high for long).

What would be the final fine tune of sync? I tweaked maybe 20degrees, very tiny amount. Just tweak for good feel?
Manometer no load the best measurement?
Set sync at 6K if I ride at 5K?

2 Wheel Wanderer

seevtsaab  I think Brad Black said that in his report.

So I tightened up the intake manifolds to the TB's, went through the syncing process and immediately there was a big difference. It was still a bit rough up at the top end but WAAAAAAAAAAY better than it was before. I still have to do some tweaking but the bike is finally rideable again.

Dear Mr Dealer, Thanks for rushing through my valve guide replacement and not putting my bike back together properly!!!

What would be the final fine tune of sync? Just tweak for good feel?
Manometer no load the best measurement?
Set sync at 6K if I ride at 5K?
Would love to know the answers to these questions.

Fergus

Where can I find more information on how to do this stuff? Is there a tutorial?

2 Wheel Wanderer

Quote from: Fergus on June 03, 2010, 01:19:33 PM
Where can I find more information on how to do this stuff? Is there a tutorial?

Do a search here on throttle body sync as well as Brad Blacks Report on how to do it. http://www.bikeboy.org/ducati2vthrottleb.html