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1100E jetting thoughts

  • Thread starter Thread starter kawfeedave
  • Start date Start date
K

kawfeedave

Guest
OK, so after unsuccessfully attempting to fix some carburetion problems with a full carb clean and rebuild, I ordered a Dynojet kit. The PO rejetting this thing, and stacked shims under the needle like it was going out of style.

Anyway, what I have is an 1100E with APE pod filters, Yoshi Stage-1 cams, and a V&H megaphone. I'll be installing the Dynojet stage 3 kit, but I'm wondering if it comes with the air jets? It currently has 170 air jets in it now, and if that's not right, I want to order the right ones so I can install them along with the kit.

Any ideas/thoughts on the overall situation? If I need air jets, should I go to Z-1, or elsewhere? Thanks for any help, I need it.....
 
It comes with DH160 Pilot Air Jets. Not sure how they differ from Mikuni sizes. I know the main jets have a different numbering system.
 
Keep the pilot air-jet stock.
Start with this jetting
138 main jet
47.5 pilot jet
jet needle set at third notch up from the bottom
Idle mixture screws out 3-3.5 turns out
Make sure you synchronize the carbs.
 
chef1366 said:
Keep the pilot air-jet stock.
Start with this jetting
138 main jet
47.5 pilot jet
jet needle set at third notch up from the bottom
Idle mixture screws out 3-3.5 turns out
Make sure you synchronize the carbs.
Click to expand...

Will do. Any idea what the stock air jet is? The PO installed a 170, and I guess the kit comes with a Dynojet 160. Any idea how the Mikuni sizes and the Dynojet sizes compare?
 
Jet_Numbers_Cross_Reference_Sheet.jpg
 
Ok, good info. I did recall that Basscliff has a stock jetting chart on his excellent website, and discovered that the stock air jet is a 170. So if the Dynojet kit comes with a 160, and according to the cross-reference, that's a couple sizes smaller than stock (it the equiviallant to a Mikuni 150), is the thought that the reduced restriction of removing the airbox allows too much flow through the stock 170, and the Dynojet kit actually steps the jet down to make up for the increased flow?

Just thinking out loud, I'll follow the directions in the kit first and foremost, and see how that work out.
 
Air jets are by size and are the same.
Mikuni jets are spec'd by fuel flow and DJ jets by size.
Follow my jetting suggestion and you should be riding right away with a big smile.
I've done enough to know.
 
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