LCGB Forums

If you had a standard 200 barrel. What could you do to it to give it a bit of torque for a trailer/luggage and touring?

Does this set up exist? I know there has to be a compromise somewhere, but I've yet to find the right one.

It gets costly going through England and France.

I don't want to fork out for another kit. I have TS1230, RT230 and GT193 engines. The TS1 gave me the best fuel economy at approximately 40-ish MPG.

So, I want to see what a standard barrel could do with steroids.

I know Harry Barlow was offering a touring tune using an indian 200 barrel bored out to 70mm, 60 or 61 stroke crank think MB offers similar.

I loved my old MB Honda 205 conversion with a 26mm carb which I think would be along the lines of what you're asking for Bilko. Perfect timing too as MBD have been pushing their new Honda-type pistons over the last few days

Straight 70mm reborn 4.8 4th, clubman, clubman.

Job done.

Would a longer conrod (116) and a base packer give a bit more torque ?

Anyone used the ally cylinder steel liner bored out to 225 kit that comes with head and studs gaskets etc ?
Bit of a high jack of thread but on topic
( 183489442176 ) ebay number

MB has just released a new Honda 205 a-like piston...

duncan1958 wrote:Anyone used the ally cylinder steel liner bored out to 225 kit that comes with head and studs gaskets etc ?
Bit of a high jack of thread but on topic
( 183489442176 ) ebay number

They are shite, avoid at all costs unless you like having seizures for fun

ULC Soulagent wrote:

duncan1958 wrote:Anyone used the ally cylinder steel liner bored out to 225 kit that comes with head and studs gaskets etc ?
Bit of a high jack of thread but on topic
( 183489442176 ) ebay number

They are shite, avoid at all costs unless you like having seizures for fun

Will give it a body swerve on your recommendation.
Thanks for the advice

Superhooper on here has a standard 200 Indian barrel with a couple of minor port tweaks and a bolt-on LTH reed valve. It also has a boost port opposite the exhaust.

It runs on a BGM box pipe and 26mm Dell'orto and runs really well. All day, every day.

I used it for the Italian job in 2017, and it was only when I got it home that I discovered it wasn't a 225 Rapido.

It strikes me as great value of money.

Darrell Taylor did a Scootering guide on GP200 Bang for Bucks tuning, might be worth getting a hold of that, very enlightening.

Actually it`s all on the website for free

Bofs wrote:Darrell Taylor did a Scootering guide on GP200 Bang for Bucks tuning, might be worth getting a hold of that, very enlightening.

Actually it`s all on the website for free

Yes, I used that guide along with mb advice on port timings to tune a small block for very little money.

Went really well. .....for 40 miles when I melted a piston

On a new piston now and I'm running in a bit more sympathetically.

Apart from rebore to 175 and head machine work, I could have done the whole thing for about 20 quid.

Thanks for the replies.

Easiest option Adam Winstone.

Trickiest Dickie.

I'm definitely not up to DIY porting. So I either go standard with a bigger carb and my Avanti Ex Box or get someone to do the Voodoo work on the ports.

Robert I have a MB modified Indian barrel that I considered getting a tickle for good touring. It would need a new piston as the old Racetour one was done.I asked both Harry B and MB about it. Both said the cost would equal a new kit. So I bought the RT 225. If you can port yourself then it maybe a cheaper option.

I used stage 4 barrels for a long time but the mahle pistons kept snagging rings. But at 100 quid you could do 4 for the price of a kit. However. After the second time of the rings letting go I bored out to 225 and used one of the avanti pistons. Always used with a NK rally road and a 30mm. This made a great all round set up for rallying, even two up.

Mick abbey is very good and very reasonable if you don't fancy porting yourself

NorthernJordan wrote:I used stage 4 barrels for a long time but the mahle pistons kept snagging rings. But at 100 quid you could do 4 for the price of a kit. However. After the second time of the rings letting go I bored out to 225 and used one of the avanti pistons. Always used with a NK rally road and a 30mm. This made a great all round set up for rallying, even two up.

What return are you getting fuel wise?

Malc Andreson (mechanic at MSC) used to get fantastic results with the Honda 205 conversion, but scarcity of pistons means it's not viable these days

Bilko wrote:

NorthernJordan wrote:I used stage 4 barrels for a long time but the mahle pistons kept snagging rings. But at 100 quid you could do 4 for the price of a kit. However. After the second time of the rings letting go I bored out to 225 and used one of the avanti pistons. Always used with a NK rally road and a 30mm. This made a great all round set up for rallying, even two up.

What return are you getting fuel wise?

I'll be honest I can't really remember. It liked a big main jet compared to my RT as I guess the cast iron runs hotter. I wanna say about 40 to 45mpg two up. It gave good performance for a nice simple set up, with lots of people asking if it was a TS1

MB have recently redone the honda205 piston but by the time you buy that have the tuning work done you're not thst far off the cost of an RT kit.

A 200 barrel with a quality piston paired with a decent exhaust and carb for what you want can give decent performance. It just won't be earth shattering or give much bragging rights in the pub.

A 200 barrel with a quality piston paired with a decent exhaust and carb for what you want can give decent performance. It just won't be earth shattering or give much bragging rights in the pub.

To be honest, priority is fuel consumption and as long as it can pull the trailer.