Power loss

[dbeardslee]

I've got a set of Green Mikes XS coils out in the man cave right now. They've only got about 3k miles on them, but I ditched them in favor of the Dynas. But in retrospect I think most of the trouble I was having was due to the wrong needles being installed, and they worked okay at lower rpms. I could never get them to push to redline, but they'd get close.

If you want to try some hot coils to see how it affects giddyup and cold starting, you can have these. Might even be able to dig up some plug wires for you, but you'll need to use your own caps. I wouldn't recommend using them permanently, but they'll show you the difference hot coils make. And these suckers are HOT - 45Kv worth. You'll need to open up your plug gap to .035, but again, if you want 'em they're yours. And the way I had them installed (cross drilled) you can bolt them right into place with the stock hardware.

[motoman]

The bike was hard starting this morning leaving for work but ran fair.

Got to work (ha ha...nothing to do) and pulled the carbs and moved the needle down to it's most lean position. Engine very hard starting and misfired when first started. Had a bad hesitation and died several times on take off.

It ran OK when moving, stumble completely gone in high gear and almost gone in lower gear. But, still REALLY hard starting.

Moved the clips to the center (stock) position and it starts right up. High gear is good but you can still tell it's getting too much fuel. Low gear has the same stumble that I've always had but goes like crazy before and after.

Everything back to stock jets and settings. It's staying there because it runs as good as it ever has. I'll see what happens.

I suspect the after market exhaust has a lot to do with the symptoms.

Well, since you've always previously avoided using the enricher because of richness already, you might try using it for the 'cool' starting, even in the first (partial) position Makes a HUGE difference my friend.

[BA80]

It's always started fine above 45º without it and I'm sure it will now. The enricher just floods it in warmer temps.

I don't know why the needle position made a difference at startup but it certainly does. The enricher didn't even really help.

[dbeardslee]

It's always started fine above 45º without it and I'm sure it will now. The enricher just floods it in warmer temps.

I don't know why the needle position made a difference at startup but it certainly does. The enricher didn't even really help.

When the clips are in the center notch the tip of the needle will be right about at the end of the threads on the main jet inside the emulsion tube. One notch up on the clip and the tip of the needle will start to go up inside the end of the jet. With the plugged pilot tower it's still drawing gas up through the main to feed the pilot jet via that cross shaft, so I can see how the needle position could affect it on a cold start.

The enricher not making a difference would have me wondering about the condition of the bowl orifices.

[BA80]

So, those 2 leaner settings on the needle are basically useless. Too bad because it seemed to run better off idle there.

[dbeardslee]

So, those 2 leaner settings on the needle are basically useless. Too bad because it seemed to run better off idle there.

I wouldn't say that. A little bigger jets in conjunction with the lower needles might give you enough gas for a cold start, as well as changing the rpm at which the main fully opens. But again, I'd be suspicious of the bowl orifices if the enricher had no effect.

Did you read post #181?

[BA80]

It helped but it wouldn't catch and go by itself. The bowl orifices are clear.

[BA80]

Yes, I did. Thanks but if I decide to put some on I'll get some Dynas. I understand those Mikes coils tend to lay down on ya.

[dbeardslee]

Yes, I did. Thanks but if I decide to put some on I'll get some Dynas. I understand those Mikes coils tend to lay down on ya.

That's true. My first set of black ones lasted 7k miles. But these are pretty new and they're free if you want to try them for diagnostic purposes. I wouldn't trust them for the long haul either, which is why they're not on Betsy anymore.

[BA80]

Let me know what the shipping is....

[dbeardslee]

Let me know what the shipping is....

I'll pay to ship 'em - it's only going to be a few bucks. I tend to send stuff via USPS's Slow Boat service.

[BA80]

Back to a completely stock jetting setup and it still isn't right. I'm starting to think they've changed the fuel at the pump. Ken is having issues with his too.

[MPittma100]

Gas

Back to a completely stock jetting setup and it still isn't right. I'm starting to think they've changed the fuel at the pump. Ken is having issues with his too.

If you cannot find any better gas, try some NOS octane booster (local parts store) and test ride with that in the gas to see if you have an improvement/fix. Otherwise, search for E0 if you have not already done so.

I have a supercharged vehicle with same compression as the 11s. It responds favorably to the addition of this product. It is not cheap, but it may help solve your issue.

Another alternative is to find a station with unleaded racing gas. Normally is 100 octane.

The question that comes to mind is what did they do to the gas? Did they add more corn (E15, E85)?

[dbeardslee]

If you cannot find any better gas, try some NOS octane booster (local parts store) and test ride with that in the gas to see if you have an improvement/fix. Otherwise, search for E0 if you have not already done so.

I have a supercharged vehicle with same compression as the 11s. It responds favorably to the addition of this product. It is not cheap, but it may help solve your issue.

Another alternative is to find a station with unleaded racing gas. Normally is 100 octane.

The question that comes to mind is what did they do to the gas? Did they add more corn (E15, E85)?

Octane is a measure of the compressibility of gas, not it's "explosiveness." You generally want to run the lowest octane you can without getting pre-ignition. For my F model that's 87 octane. High octane gas tends to gum stuff up and it will foul plugs faster than lower octane gas. At least that's been my experience with it. My $.02

[BA80]

I don't know Mike but nothing I've tried, and I've tried a LOT of different things, has made a significant difference.

The leaner I go the better it gets. I'm as lean as I can go without buying more jets.

I pulled one just to check. This is with Mac 4 into 2 and pods with 42.5 pilots, 137.5 mains, needle on center groove. All stock jetting.