Hi. Just fitting a RT 195 kit on to my GP 150 engine at the moment, I am at the port timing stage. With the .7 base gasket fitted the transfer ports are just below the rim of the piston and the piston is just below the exhaust port by approx 3 thou. With the head fitted and no gasket I have a squish of 1.1 mm which sounds ok. Is this set up ok ? . Also using GP 200 gearbox with 18-47 sprockets, ancillotti exhaust, I am looking for a good touring set up with good mpg, I am looking at either the 26 or 28 mm deli carb, most likely with a remote filter, which carb would you recommend. Thanks for your help. Andy

Sounds set up fine, Id go for a 28mm

Would this work with a scorpion ss expantion, 28 delly on an italian gp150 Thanks

Yes it should work fine. The gearbox isnt the best though

Will these kits work ok with a standard crank, Del 25 and one of your exhausts?

Providing the crank is in perfect condition it will work fine.

Mark I want this kit, currently running 1964 150 LIS with BGM stator and flywheel, clubman exhaust, standard gearbox and clutch, what carb do recommend ?

If you want to use the air box then a 25mm if your not bothered a 28mm with a Tea strainer

Hi Mark, I obviously like the sound of this kit, I need to replace a 10 year old blown imola, with a just fine dellorto 30mm and ancillotti box. I scoot around London mostly, 4 miles here, 10 miles there for getting to jobs. Will this kit be OK for that sort of regular small mileage use? (Obviously there's the occasional trip out..) If so, what info do you need in order to know I'll get the right set-up ,i.e. con-rod, crank type, gear sprocket thangs etc?? Thanks, Jamie

Yes it is designed for exactly what you asked for and more. It will fit and work with any 58/60mm crank and either a standard 107mm con rod or an improved 110mm con rod as this allows you to set up the clyinder to suit you. You can read more on our Tech-Site here http://www.lambrettaspares.com/info/cylinder-*-small-block/190-*-195-race*tour-+61.html

Hi, I have holed a piston on one of these kits and wanted to know if you are able to clean it up and supply new piston? Barrel has deposits on exhaust manifold side. Thanks Graham

Yes please send it in for me to look at

if i want to run this kit with a reed valve do you convert the piston in the kit or do I need to purcahse a new one ? Paul

I always modify these pistons for 360 degree inlet timing and also modify the inlet port and add a boost port this is our tune up part number LAB293

Hi Mark two more questions 1. what sizes are the three alloy base gaskets that ship with the kit (shown in the listing). 2. the exhaust I mentioned last night, has two stud holes, but the cylinder has a four studs arrangement, does this mean their not mate-able??

Usually the kit comes with 0.3, 0.5 and 0.7mm base packers. You can fit 2 hole or 4 hole flanges to the cylinder, just fit whatever stud pattern you need

do the kits come with the new improved piston now ?

The new kits come with the Black pistons

Hello, I have got a TV s2 that I'm currently renovating. As I'm quite interested in some more oooumph and the improved cooling of a alloy cylinder, the MBgm rt 190 seems to be just the thing... except for: will you offer a piston to go with the TV crank (116 mm conrod) or will I have to change to a 107 mm setup? The thing is that I would like to have the 116 conrod to be able to convert back to the original cylinder if I should ever want to, and now there are gp/dl cranks with 116 conrods available... Thankful for your reply, //Jonas

Yes we will offer short crown height pistons to suit the TV type rod

Hi there, just fitted the 190 RT ,running it with a 22mm carb at the moment with a sx150 gearbox. In 1st & 2nd it revs a lot and the gears seem very short,3rd & 4th are fine once you open up a little bit. Any advise on what would be the best carp and gearing for the kit. Mainly I ride 1 up.

All the information is available in our ''Tech-Site'' http://www.lambrettaspares.com/info/mb-*-setting-up-instructions/setting-up-*-cylinders-mbgm-rt+255.html

Hi Mark. Just wanting to know if/that this kit is a bolt straight on/out of the box kit. I've recently replaced bearings & seals, crank (MBL0115) upgraded the clutch (MRB0858K) sprocket 17th/cush drive ass, chain (all purchased from your online shop via Phil). And I have a Casa Clubman' 42mm 'Double Megaphone' sports exhaust, & OTT chain guide. Scootopia Sh2/22 carbie. And am now looking for a suitable cylinder kit. I've read good things about this kit, (along with the Casa 185, & the Scootopia 185 kits). A few more cc's never go's astray

Yes the RT kit will work perfect with what you have but power will be limited by the small carb and exhaust.

I am building an RT195 using an Italian GP150 gearbox what front and rear sprocket would you recommend I use?

If using a MBgm Clubman, you can keep it standard as the exhaust likes to rev or go for 16/17 tooth. Better still swap to a better gearbox

I have a 125 gearbox with 46/15 sprockets with jl3 exhaust would this kit be ok for this set up

Yes perfect but the gearing should be altered

Hi Mark, thanks for that. Given your abilities with my favourite 2 wheeled machine I'd like to order one of your RT195 kits and just wanted to ask the following: As it's an imola 185, meaning it has the carb on the chain case side, and an ancillotti exhaust, Will I need to order different manifolds for these? If so do you supply them and what's the price please?? And the next important question given how long its been off the road for... is when can I get one, even a run-in one? Cheers, Jamie

If its a 28/30mm you need this manifold MRB0058K. Not sure about the Sito exhaust, ideally swap it for the matching MBgm Big box MBGM0253. I run them in in 5 minutes, doesn't take long if you know how to set up an engine

Hi Mark. Is the Meceur 60/110mm crank suitable for the small block RT195 kit? It's this one from Scooter Centre: http://www.scooter-center.com/product/7671779/Crankshaft+RACING+60mm+stroke+110mm+con+rod+Lambretta+DLGP?lang=en Based on the info on the Tech Site I guess it is but was concerned by their comment regard vibration. This shouldn't apply to RT kit though should it?? Cheers

They will work but will be difficult to set up port timings and squish clearances because of the limitation with the con rod length. Would be best with a 60x110mm or just the MEC 58 x 107mm

Hi, i'm looking at replacing my mugello 186 and like the look of this kit. I'm running a 28 mil delorto and a nk road pipe for touring. Is this kit likely to be any better than the mugello and run ok with my carb and pipe? Thanks, Tim

The 30mm and NK work quite well with this kit. If you want a wider spread of power then use the MBgm Clubman which gives more power lower down and higher up in the rev range

Just fitted Rt195 kit, Bgm big box clubman exhaust and 28mm Daellorto carb. Just sorting jetting out and on first few runs at 10 mins max 3500 rpm reaching 140 degrees c CHT.. Plug is light brown colour. What kind or temp would you recommend a a safe maximum

All running in and jetting instructions can be read here http://www.lambrettaspares.info/info/mb-*-setting-up-instructions/setting-up-*-cylinders-mbgm-rt+255.html

Skip to the end of the images gallery

Skip to the beginning of the images gallery

Lambretta Cylinder kit, RT195/200, standard piston ported, Race-Tour MBgm

16 Reviews Add Your Review

£470.00 £391.67

In stock

Only 3 left

SKU

MBGM0261K

Cylinder kit 195 (RT kit) MBgm (Race-Tour)

Details

More Information

Questions (34)

Reviews 16

Reasons to Buy

Development History

Tips

Technical

Please click here for the official fitting booklet

Includes:

Alloy cylinder fully cast and machined with modern retro port spec
Plated cylinder bore
65mm MBgm CAST coated RT piston kit
Machined CNC cylinder head with 8 point mounting
High tensile long cylinder studs and special head nuts
Exhaust manifold studs and washers
MB exhaust deep Brass nuts
Inlet gasket
4 point exhaust gasket
0.5 and 0.7mm MB base alloy gaskets
4 high tensile head bolts and washers
Uses 200cc inlet stud spacing

Ready to fit.

Small end bearing and head gaskets are separate items.

PLEASE READ THE SETTING UP INSTRUCTIONS AND CARB SETTING UP BEFORE YOU PHONE FOR ADVICE

Click here for Setting up instructions

More Information
Brand	MB Racetour

Write Your Own Review

Only registered users can write reviews. Please Sign in or create an account

Long term reliable and powerful porting specs.
Can be used with standard or performance carbs from 18 - 35mm.
Can be used with standard exhausts, Clubman or performance expansion chambers.
New 4 studded exhaust flange but can still use standard exhausts no problem.
Thicker anti warp head and base faces.
Improved port flowing.
Alloy cylinder to run cooler with an extra top fin.
Nicasil plated for long lasting friction free running.
Easily modified transfer feeds to match existing over sized transfers.
Uses top quality MBgm Race-Tour forged pistons.
Cylinder head recessed into the cylinder bore for easy set squish clearances.
Extra four studs to bolt cylinder head down.
The most versatile Lambretta cylinder kit ever made.

Mark Broadhurst has probably tuned and machined more Lambretta cylinder barrels and heads than anyone else.
This development and history of tuning has been put into our touring cylinder kit.
The key word is touring.
Mark has developed his often copied touring Stage 4 tuning technology and modified it into a modern cylinder kit.

Check ring gap before fitting.
Check the cylinder slides down the cylinder studs and drops into casing free.
Seal base gaskets or face with silicone sealer.
Seal cylinder head gasket or faces with a loctite.
Torque head nuts down to 18-20 lbs ft and re-torque at 500 - 800 miles.
Always check squish clearances, it should be 1 - 1.5mm.
These cylinders have a new shape inlet 200 type port, inlet manifolds ideally need matching to suit.
Early cylinders can be tight on the exhaust port fins, so some modification is required if using the MBgm Clubman

Gearing, depends on your weight, if you drive 2 up with luggage, the type of riding you want to do, exhausts used and the top speed you want from the kit.

Examples are from 5.2:1 - 4.3:1

Li150 Italian 15x46, 16x46, 17x46, 17x47, 18x47
Gp125 Italian/Indian 18x47, 19x47,19x46, 20x46, 20x47
Sx200 15x46, 16x46
Tv200 15x46

CNC machined.
Nicasil bore.
Uses MBgm Race-Tour piston at 65mm.
Power out put vary depending on set up and who's dyno is used, we've seen from 9 - 22bhp from a standard cylinder.
Available with normal 39mm crown height pistons to suit 107mm or 110mm con rods.
With the use of different base/head gaskets/packers port timings are adjustable to suit Touring or Road-Race use.