ESE's works engine tuner

[wobbly]

Something is seriously wrong with the engine setup if its that far off the sim peak power rpm, or conversely the sim is seriously flawed.
But in any case having fuel spewing from the overflows means by obvious inference that the same overflow fuel is spewing out of the pilot
and emulsion tube into the intake,as the bowl is way overfull.
You will never get any sense out of jet changes/tuning while this is happening.

[adegnes]

Something is seriously wrong with the engine setup if its that far off the sim peak power rpm, or conversely the sim is seriously flawed.
But in any case having fuel spewing from the overflows means by obvious inference that the same overflow fuel is spewing out of the pilot
and emulsion tube into the intake,as the bowl is way overfull.
You will never get any sense out of jet changes/tuning while this is happening.

Exactly, something is seriously wrong with either my sim or the engine! But what, except for the carb overflowing, I can't find anything.
You're right though, no point in trying anything before the carb issue is fixed.
I've thought about going to a diaphragm carb, as they should be more vibration tolerant.

[TZ350]

I've thought about going to a diaphragm carb, as they should be more vibration tolerant.

I have pulled 28hp on the dyno with this Tillotson HL360A carb (24mm venture) hard mounted to the engine. The bike was vibrating so bad fuel was spewing out of the fuel tank. Getting drenched in fuel on the dyno provided its own interesting moments.

[adegnes]

I have pulled 28hp on the dyno with this Tillotson HL360A carb (24mm venture) and the bike was vibrating so bad fuel was spewing out of the fuel tank. Getting drenched in fuel on the dyno provided its own interesting moments.

Sounds like the carb for me!

[TZ350]

Pin holes in pipe, Black oily goo is seeping out of both after a few runs. Normal?

My experience too, even with bikes that are running very well. I expect black oily goo bleeding from small cracks or pin holes in a pipe is normal.

[wobbly]

If the engine is vibrating that bad as to spew fuel out the overflows, then the balance factor is wrong.
PM me and i will check the sim pack.

[adegnes]

If the engine is vibrating that bad as to spew fuel out the overflows, then the balance factor is wrong.
PM me and i will check the sim pack.

I think the balance factor is around 30-40%, can't find my post about it. I do remember that it was far too low initially(<25%), and after drilling out the alu slugs in the balancing holes and shaving material from the inside of the webs it vibrated much less.
Actually it doesn't vibrate that bad at all, could be the carb. Should try another one.

Thanks for taking the time to look at my sim, I'll pm you later!

Edit: Can't find my post about the new balance factor cause I never made one... It's 38%. I'll write that post later today, found the pics.

[wobbly]

A factor that low is suitable for a horizontal cylinder ?

[TZ350]

Got the EFI Suzuki GP/NSR110 on the dyno tonight.

Not great, only 26hp, was hoping for 30. But still its promising, even showing some promising driveability .



Nowhere right yet but improved the midrange with a bit of fiddling with the PV, I expect there is plenty more yet. I need three computers at once, one each for ignition/PV - EFI and dyno.

[mr bucketracer]

good work rob , not to bad realy off the cuff , more than crapy old fxr's for a start

[adegnes]

good job!

[adegnes]

A factor that low is suitable for a horizontal cylinder ?

It's the highest I can get it without mallory in the webs.

I re-read the replies I got here last time I was wining about my vibrant bike, and there's a tip I haven't tried yet; weighting down the carb to change it's "frequency". Now with 38% bf instead of <25%, vibration is much less severe and it might do the trick.

I've just started working on the bike again after a long period of life getting in the way, and apparently need to catch up on where I was and what needs sorting (and what I have/haven't posted).

[ief]

Kind of miss the copper 'bucket stuff' Rob

Looks promising.

[richban]

Got the EFI Suzuki GP/NSR110 on the dyno tonight.

Not great, only 26hp, was hoping for 30. But still its promising, even showing some promising driveability .



Nowhere right yet but improved the midrange with a bit of fiddling with the PV, I expect there is plenty more yet. I need three computers at once, one each for ignition/PV - EFI and dyno.

Thats great Rob. I am sure you will fatten that up really nicely with the power valves. Good to see that old cylinder put to good use. Is it still using the stock porting?

[TZ350]

Good to see that old cylinder put to good use. Is it still using the stock porting?

Yes, stock porting. Only modification to the cylinder was injectors and 2mm off the top for the reduced stroke. Wanted to keep things easy to replicate.