LCGB Forums

Hi Is anyone running or have any info on jetting on the following set up.

Mugello 198
PHBH30, Powerjet
Kytronic.

Running at moment, x4 needle 2nd clip down
Pilot 70
Av 266
Main 100
Kytronic on Dial 2 (Set up on 23 TDC,) ( Yes did retard to 17 when checked with strobe on dial 0)

All ok until I hit about 35mph, then hit flat spot as cannot go any faster?
Advice will be appreciated, beware not done any jetting before, but will be getting Dynoned when near enough about right as want to do my 100 miles running in!

Excuse me sticking my oar in, but a 100 main jet sounds lean though I am aware that you have a power jet to compensate. I’d hate it for you to wreck the kit through it not being rich enough!

For now, I’d advise you blank off the power jet & come back to that later.

A main jet then in the ball park area of 120-130 would be the safest to try first.

By contrast, the pilot jet of 70 should be able to come down to 50 ish.

Also, an X7 needle is a good one to try & seems to suit a lot of Lambretta ‘kitted’ machines.

Once you can get it running ‘somewhere near’, report back & the power jet can be discussed regarding it coming back into the equation.

I hope this helps....

Hi Guys went to dyno at weekend, nightmare for Martin, (Cheers Martin, sorry about aggro)

Final Setup
Main 125
Needle x13p2
Pilot 49
Slide 0.5 turn
Running at 19 degrees.

Outcome was not as good as the money spent to be honest.

Figures are 14.74 BHP, Max Torque 11.41, Top speed 59 mph,

Hope this helps people to make up their minds.....

Delboyli150 wrote:Hi Guys went to dyno at weekend, nightmare for Martin, (Cheers Martin, sorry about aggro)

Final Setup
Main 125
Needle x13p2
Pilot 49
Slide 0.5 turn
Running at 19 degrees.

Outcome was not as good as the money spent to be honest.

Figures are 14.74 BHP, Max Torque 11.41, Top speed 59 mph,

Hope this helps people to make up their minds.....

What pipe do you have on that?

Gori 50

If it's out of the box with no other work your figures are about right. There's a lad in the group I ride with who has an out of the box Mugello 198, no other work apart from a pm25 pipe that makes 14bhp as well.

Also I'd be warry of that 49 pilot, perticularly on the overrun, for example pulling off a motorway and going down the slip road, all to easy to get caught out and seize, it may well run a bit cleaner and sharper off the bottom but I'd play safe and fit a 55.

Hi Scooterdude

Thanks for the reply, I am running with a Gori 50 so was expecting to cruise at 60+ but this was full throttle screaming so not impressed. A lot of money for sod all.

Just Noticed typo

Slide 45
Powerjet 0.5 turns.

Something not quite right there mate, as a companion my Mugello 199 will happily pur down the motorway at 73-74mph without any bother, I'm running a late pacemaker gearbox with 18/47 sprockets giving me 4.8:1 gearing and a Scootopia clubman that I'm more than happy with.

I did have a brief romance with a Gori GP 50, it made more peak power right at the top but was pants otherwise + the excessive noise resulted in a bad headache the few times I went out with it.

Yes look at your gearing as it shouldn't be screaming at 60.

Can't help you with the power jet as I've no experience with em apart from knowing that if your using a PHBH off of an NSR or Mito you won't be able to Rev the Mugello hard enough to get any benefits from it.

This is what I thought, will try and ring that dealer in St Ives to see what feedback I get will keep updated on here.