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What is the current thinking on cylinder kits?

Need help with a tuning kit, how do you tune your scooter, which kit should I choose, and all general tuning and modifcations questions are for in here.

Re: What is the current thinking on cylinder kits?

Postby kev johnson » Thu Sep 19, 2019 10:02 am

Im currently using Avanti 225, just done 2500 miles from Manchester to Poland and back, ran superb, panel only came off once to change a fouled plug.

30mm Delly, GP200 19X46 with Varitronic and CST3 pipe

Not the fastest but fast enough, 21bhp out the box
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Re: What is the current thinking on cylinder kits?

Postby Adam_Winstone » Thu Sep 19, 2019 4:20 pm

^... like
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Re: What is the current thinking on cylinder kits?

Postby corrado » Thu Sep 19, 2019 8:44 pm

dickie wrote:
corrado wrote:The BGM RT kit has a very similar port layout to the Mugello. I fitted an LTH reed valve conversion to my Mugello 225 and it totally transformed it but you're adding £200 + to your total and an out of the box BGM195 or 225 kit ticks nearly all the boxes for what most riders want.

Seems odd to spend all that extra money on a Reed valve when there are so many Reed valve kits available. Rb22, monza, ss225, gt200 etc.

Is there something special about rt225 with reed?


I'd agree with you but In my case I holed the piston on my Mugello and I didn't have another piston, except a TS1 piston and I also had an LTH reed valve in my possession so I thought why not. One of the best decisions I've ever made, scootering wise. I realise that the tuners can turn a racer into a tourer etc but generally the kits that have reed valves (Granturismo probably the only exception) are high revving kits that produce their power higher in the rev range whereas the piston ported kits are generally not high revving so adding a reed valve gives you the benefits of both worlds. It won't win any races (apart from uphill races in 4th gear against TS1 kits when we both run tall gearing) but they make great touring kits with their extra mpg.
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Re: What is the current thinking on cylinder kits?

Postby corrado » Thu Sep 19, 2019 8:46 pm

Donnie wrote:so on the BGM225 with a reedvalve what exhaust ye using?


Mine's a Mugello 225 and I'm using an ADS3 exhaust, they're now named CST3.
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Re: What is the current thinking on cylinder kits?

Postby corrado » Thu Sep 19, 2019 8:49 pm

Donnie wrote:
ULC Soulagent wrote:
Donnie wrote:so on the BGM225 with a reedvalve what exhaust ye using?

Donnie,
I’m using Bgm v3 on mine and happy with it. A fellow club member has the same kit but used the Bgm V4 and it ended up strangling the engine :shock: weird so he reverted back too a dev-tour which transformed it.


aye, I had 2 bgms and both broke in little time :-/ Don't think I'd bother again


Avanti ex-box pipe would be the answer if you want to retain standard looks.
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Re: What is the current thinking on cylinder kits?

Postby Donnie » Thu Sep 19, 2019 9:57 pm

Hmmmm Hard to choose between the 2 I have to admit, not too bothered about standard looks as such and have time as I need to suss out a reliable ally welder to do the work to the crank mouth too.

I like the idea of a reed I admit
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Re: What is the current thinking on cylinder kits?

Postby ToBoldlyGo » Sat Sep 28, 2019 10:18 pm

For what all this is going to cost you why don't you wait a little and buy one of the new Uni engine cases and stick a standard 200 top end on?
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Re: What is the current thinking on cylinder kits?

Postby Donnie » Sun Sep 29, 2019 11:00 pm

Mainly as I've no interest in a new case, would rather use what I have to be honest especially as its a matching case to the scooter.
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Re: What is the current thinking on cylinder kits?

Postby burnside » Mon Sep 30, 2019 9:41 am

ToBoldlyGo wrote:For what all this is going to cost you why don't you wait a little and buy one of the new Uni engine cases and stick a standard 200 top end on?


Haven't there been issues with the UNI cases, something to do with endplate stud positions? Quite a lot of talk about it on Faceache over the last week
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