imola ppl need advice on additions???

[druist]

I am pretty sure of going down the imola route now, while i dont expect it to get the 24bhp that some say it will do I would like to get the best out of it, my intended use is 30 mile max trips to work/back some coutry roads and dual carriageway, NO PILLION, i am about 11st.

I was wondering for people who have/had or work on them what if anything I should change to my existing system. And should any tuning other than blueprinting be done? I dont need any thoughts/advice on anything else on the scoot eg front damping, rear suspension blah, blah.

So its a SIL 1978, GP150 with vespa sheered off fins/broadhurst-beedspeed 80's flywheel electronic ignition with plastic fan, Dellorto phbh 28, remote filter or sometimes just some gauze. NK exhaust, 16x46 mk1 super vijay gearing 150. Nylon Chain guides, engine is fine and has all be reasembled and worked on by a very knowledgeable and exeptionional mod in bristol who is probaly cringing at the thought of what i am thinking of. your work has not been in vain.

So I will obviously need a new race crank (any suggestions?)

Should i keep gearing and setup as is? or change to 200GP or other? if so what else would i need to change?

Exhaust ok or change?

Extra tuning or other suggestions for this setup?


I dont want to have to spend a huge some as i have a budget but please feel free to suggest, i can always swap my house


guys i really appreciate any advice as i dont want to be led the wrong way, the more advice the more i can make the right choice.

[CPH Lambretta]

So,
The Mec race crank is good for the money at around £100 most people recon they are good enough for TS1 so should be okay for Imola.
You can't use your NK on the imola because the Imola has a different exhaust flange (same as TS1) to the standard one you have now. You might be able to buy a new down pipe but the NK ain't that great so get something else. For max power a JL4 for good power and economy a used PM28 or new ScootRS/Sterling pipe.
Gearbox, the Vijay MK1 and 2 have very different final drive ratios so you need to know what you've got. But the indian GP 200 box is good and cheap and should work well on standard 18/47 sprockets. But you have to match the gearing to the pipe or the pipe to the gearing. It all has to be balanced.
Thats my two penny worth, others will disagree.

[druist]

its the Vijay Super Mk 1 that is in there. The NK has an interchangeable downpipe so i assume it could take an larger fit??? What would be the downside of keeping this setup with the imola?

Its a 16t front sproket, sorry.

Also, will a "more" plate clutch make a lot of difference. If things were kept as they were and imola added would it be wasting a lot of potential?

[coaster]

Hi Drew, I reckon you will be fine a standard clutch plus maybe some uprated springs from sonone like Cam Lam. I'm running a bog standard clutch in my muggy, I weigh a stone more than you and I often have the mrs on the back and have never had any slip.

[Skar]

I've done 5000 ish miles with a mazzucchelli crank and standard clutch, no problems.

If I understand you correctly you have 16/46 GP150 gearing? That gives a ratio of 4.9 which I think you should pull, I'm about to change mine to 4.98 and am confident.... (JL3 & Dellorto phbh 30 with RamAir filter)

[druist]

so the NK isnt going to be as effective. mine does have the swap to ts1 fit option or is it the final drive ratio thats incorrect?


What gains would i get from changing gearbox/gearing or would the 150 GP Mk2 vijay with the 16 x 46 be ok for my weight, non pillion?



Also, I was thinking of using Mike Phoenix, he said he would be happy to include some matching tuning, would it be worthwhile getting any "ADVANCED" tuning as I know a good tuner who lives nearby but if it is going to shorten its life or not make a huge difference as i was thinking surely the imola is set to certain tolerances and blueprinting against what its going into would seem all it would require - or am i wrong here??

[corrado]

The Imola kit is well tuned out of the box, what makes it fly or not is matching exhaust to gearing. It likes to rev so best suited to revvy exhaust and short gearing. Get rid of your gearbox and get a Pacemaker with 16 x 46 (5.28) or 16 x 47 (5.39) or may work with GP200 18 x 47 (5.22). Using a JL4 or a scootRS exhaust but don't drop below 5.2 gearing.
You won't necessarily lose top end mph when using 5.39 over 4.90 (except in theory) as in real life it'll rev on further and revs = fun. If you don't want to fly along at a genuine 75 on GPS at 8,000 + rpm then you've got the wrong kit. Just be aware that 75 on a scooter feels like 130 in a car.

[CPH Lambretta]

All what Corrado says is true.
AF recommend gearing at 5.2 for the NK so a GP 200 box at 5.2 would be perfect.
Your Vijay mk2 box has a final ratio of 4.8 (same as SX200) and with a 16T front sprocket would be even worse at 4.42, bin it and get hold of a Pacemaker/LI 150 /indian GP 200 box and then get the sprockets to suit.
Another thing to consider is how good are you with the Spanners? The Imola is a high revving/high maintenance kit. If you don't want to spend all your time sitting by the side of the road or rebuilding it in your garage the you might be better of with a Mugello or GT 186, they have less HP but are more user friendly and more "fit and forget" (when you finally get it all right and running well)

[druist]

Hi Drew, I reckon you will be fine a standard clutch plus maybe some uprated springs from sonone like Cam Lam. I'm running a bog standard clutch in my muggy, I weigh a stone more than you and I often have the mrs on the back and have never had any slip.

Hi Col, good to hear from you. the clutch i think is a surflex, fitted by a very kind "mod" in "bristol" so i would like to keep things as they are, gearing-wise too UNLESS it was to be negatively effect the IMOLA'S performance.

On a different note Colin, i was thinking of giving the scoot another coat or 2 of 2k yellow, same as before, wondered if putting a coat of clear would be a good idea to "seal" decals and prevent chips?

[druist]

All what Corrado says is true.
AF recommend gearing at 5.2 for the NK so a GP 200 box at 5.2 would be perfect.
Your Vijay mk2 box has a final ratio of 4.8 (same as SX200) and with a 16T front sprocket would be even worse at 4.42, bin it and get hold of a Pacemaker/LI 150 /indian GP 200 box and then get the sprockets to suit.
Another thing to consider is how good are you with the Spanners? The Imola is a high revving/high maintenance kit. If you don't want to spend all your time sitting by the side of the road or rebuilding it in your garage the you might be better of with a Mugello or GT 186, they have less HP but are more user friendly and more "fit and forget" (when you finally get it all right and running well)

To an extent you are right, i want a kit that is fitted and with the exeption of jetting for seasonal conditions and a little obvious maintainance - forget. I dont mind having to retorque after so many miles, if thats what you mean?? OR IS THERE MORE??


i did think of the Gran Turismo reed valve kit, but does that require lot of running in?
isnt it iron barrel?
Mugello (what is giving it its perfomance?? - unless mistaken it doesnt have a reed valve, so is this much better than well tuned suzuki 185/190 setup done by a good tuner?