Some powerjet conversions are more work than others… The TM24 really isn’t designed to be used this way. But nevermind, we have a milling machine and we can be stubborn at Allens Performance!
May 25th, 2017
May 25th, 2017
April 19th, 2017
February 8th, 2017
A TM28 carb conversion we developed at Allens Performance to replace the troublesome CV carburettors found on the Yamama XT225 Serrows. This one is for the later bikes with electric start only. It fits the standard rubbers and is supplied with a new throttle and cable kit. Jetted to suit a standard bike. These bikes are a great compromise between light weight for ease of off road use, sufficient performance to be safe in modern traffic and flexible engine performance allowing easy riding on and off road.
February 3rd, 2017
We’ve all heard that turn of phrase… There’s you know what in your carburettors!
Well imagine our surprise when a customer asked us to sort these carbs out for them. The bike was caught in a flood and effluent flowed in and around the bike! Don’t we get all the best jobs?
Needless to say, they are all mended now..
February 2nd, 2017
Although the five valve Yamaha engine is a great power unit with many applications, the standard carbs can give rise to serious limitations on a modified machine. Getting aftermarket carbs has been a problem in the past because of the different bore size of each carb. This kit resolves that issue.
The photo below shows a pari of carbs spaced at 120mm. Obviously on the SZR/XTZ set, spacing is much tighter.
January 26th, 2017
Fantastic! Finally it’s possible to get a close match for the reverse slide carburettors most sought after by TZ riders rather than put up with tired old orignals. Genuine Mikuni VM carbs modified and set up to suit.
We can also supply slides only if you prefer, or even carbs fitted with conventional brass slides.
January 23rd, 2017
October 6th, 2016
Our Carburettors don’t just end up on bikes, here’s a cracking little mini, much fettled and fitted with one of our Mikuni flat slide carbs! Apparently you can’t go far in this without getting the thumbs up. Shown here just after the a quick bit of setup. (As a slide type carb they are nice and simple to set.) According to our customer it has transformed the car!
September 4th, 2016
Feast your eyes on the Mammoth Vee Twin of Doom!
Here you can see a prototype for a run of extra special engines conceived and developed by the most eccentric Cylinder Head guru in the North, Jimmy Doom.
The bore/stroke of 4.250″ x 4.250″ gives a total capacity of 120 cu in (around 2 litres.) 2.100″ valves are fed by VM44 carbs supplied by Allens Performance Ltd. Cam lift is 0.650″ and the exhaust headers are a full 2″ diameter.
Doomsters are destined for a new wave of muscle bike so watch this space!
February 23rd, 2016
These Keihin jet needles are given part numbers according to their dimensions.
The syntax is N427-48-(TAPER)(L1)(DIAMETER)-(CLIP POSITION.) Eg: N427-48-DGH would be a taper of 1°45′, an L1 of 39.95mm and a diameter of 2.675mm.
Clip positions are not required for ordering but for the sake of notation, 1 is the top clip position. (Near the blunt end of the needle.)