7 replies to this topic

[TheKing777]

After a visit to MiniSport in Padiham for a rolling road tuning session, I have come across a dilemma!!
The guy at minisport said the jonspeed kit I had will never run 100% due to the pipe running from the carb to the charger. He said the airspeed will always mean I will have flat spots. His answer was to put the carb at the same level as the charger, resulting in a large bonnet box!

However I feel that after being beat by an Astra GTE Turbo that a weber may have to be invested in.

I remember seeing a white mini for sale with a black bonnet and a huge box on the bonnet. If I remember correctly it had 180bhp.

Anyone have a link or picture of this?
Also what are your thoughts on the weber carb or any of the above?!

Thanks

[Wil_h]

The limiting factor is not the carb in this case. Even in suck through applications the 1 3/4" carb will easily flow enough for 200bhp. The supercharger will limit what flows through the engine.

I agree the long inlet from the carb is not ideal, but I don't agree that it will always cause flatspots. But there will likely be some hesitation between putting your foot down and the car accelerating, known as throttle response or lag.

[Oldskoolbaby]

I agree with will h on this matter. I have to admit though, I did see the Jonspeed conversion at the Malvern show and i wasnt too impressed with the bends on the inlet pipe work. It had really bad creases in it and that was on a motor that they were showing off.

[Turbo Phil]

The SU is a well underated carb, & as Wil says will deliver more than enough for your application. I'd stick to it.

[johnnysti]

Im running a Vmax unit with a weber and had to make a 'bulge' in the bonnet to fit over it. Brilliant for positive cold air feed. Pain to make!! Can get a pic up if you want to

Johnny

[TheKing777]

Im running a Vmax unit with a weber and had to make a 'bulge' in the bonnet to fit over it. Brilliant for positive cold air feed. Pain to make!! Can get a pic up if you want to

Johnny

Please if you could mate! PM by the way!

[RobJaxon]

just by an injection engine!

[TheKing777]

just by an injection engine!

That would be ok if I hadn't just bought a new engine to fit the charger too. Also how would an injection make it any better?