My Li225 Special

[Minority]

Is that a home made set up not the Spanish type throttle return spring?

Completely home brewed

[Minority]

The homemade engine stand has worked out quite nicely. Its on wheels so I can move it around the garage.



The reason I took the motor out (well the excuse anyway, I just love tinkering), was that when I had the carb off and looked down the manifold I noticed a huge step to the inlet port in the cylinder (its a Mugello cylinder and manifold, you'd think they could get it closer than that).
I decided I would have to strip the top end and match the inlet and exhaust manifold at least. It also gives me a chance to check the squish and port timings.

[Minority]

Took the cowling off today and I've solved the mystery of the badly matched Mugello cylinder & manifold......









If you can't work it out from that pic, this one may help!









Yes, Ive got a Rapido top end with a Mugello manifold.

At this stage I don't know if it's a "Race" or "Classic" and what size it is!

More concerned with what crank it's got, supposed to be an AF race crank, but now who knows?

[Dryballs]

I think you'll be better with a rapido cylinder anyway!

I have heard the mugello clinders arent all that good in terms of performance.

I got my rapido to about the same performance level as my TS1

[Minority]

I think you'll be better with a rapido cylinder anyway!

I have heard the mugello clinders arent all that good in terms of performance.

I got my rapido to about the same performance level as my TS1

Yes, I'd heard mixed reviews about the Mugello kit, but I always thought my "Mugello" went quite well, now I know why.

Which Rapido have you got and what have you done to get TS1 performance?

When I get mine stripped and I find out exactly what I've got, I may have to re-evaluate which way I want to go (maybe a reed valve setup).

Cheers

John

[Dryballs]

The best thing you can do is get a race tour piston from mb

If you reed valve it just get a ts1 piston

The standard asso piston is just too heavy

[Minority]

Got my Mtech unit to fit when everything is back together. Martin at Cheselspeed was really helpful and made my long distance purchase a pleasurable experience.

[Minority]

Well started the strip down and it's a 225cc (70mm bore), 2 ring piston (don't know what variety) and a "Rapido Classic" (rough initial port timings Ex 168, transfer 120, haven't got down to inlet) so room for a bit of porting.
I think the squish is about 2mm (we'll have to sort that) and the head gasket is 68mm Is this common on a 70mm bore?
I figure if I raise the cylinder by about 1mm I'll end up with about 172 exhaust and 126 transfers, and if I do away with the head gasket (1.5mm thick) squish should be about right.

Anyway, at least the picture is becoming a bit clearer now.

[Minority]

A couple of pics of the bracket I made up to hold the sensor for my new SIP speedo.
I decided to "pick up" from the studs on the rear hub and I'm quite happy with how the bracket looks.
I've just got to drill and tap for a couple of grub screws and give it it's final polish and it will be finished, just hope it all works ok!

[RICSPEED]

cool .. nice scoot mate .. love the little details too