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Author Topic: Supercharger - Aisin/AMR and Methanol? Poss Shorrocks C75B?  (Read 8013 times)
Dslam
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Wot ho chaps, its bloody Whitworth!!


« Reply #15 on: November 01, 2013, 05:31:58 PM »

I have a base setup with an SU already. It should need just a tweak to setup for this motor.
Thanks for the input though it is easy to get tunnel vision over this stuff so keep the ideas coming.
I had the germ of an idea some years ago and I have planned it all out in my head and some of it is now in metal. The manifild and plenum are part constructed as is the carb manifold for the blower so I am on the way.
Maybe the next one I will consider injection. A bit of research is in order me thinks.
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phunkie hiboy
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« Reply #16 on: November 01, 2013, 05:53:16 PM »

You could run a couple of  injectors into the plenum, rather than directly into the ports.
 How are you going to move enough fuel (assuming here that you're running alky) through the SU?
 On Stripteaser (normally aspirated) 3 x 2" SUs on a Jaguar 3.8, rotary electric fuel pump (Holley or some such), no needle valves (just the fuel coming in in the normal location and a return from the side of each float bowl at the point that would be the normal fuel level.
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Built without compromise, by the more luck than judgment method.
Dslam
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Wot ho chaps, its bloody Whitworth!!


« Reply #17 on: November 01, 2013, 06:30:52 PM »

2 large bore taps gravity fed into an adapter which replaces the float bowl. This feeds directly into the carb body. It runs a flow rate of 4 liters in 10 seconds which should be ample. The needle regulates the flow as normal but is modified for methanol. If I decide to up the game a bit and add some Nitro then a needle change is all that is required. This engine has run methanol with a Shorrocks C75 on this basis and used 3 liters per run. It's only a Triumph twin after all Roll Eyes. The needle has an O ring on it which stops/reduces the fuel flow when the throttle is shut. The carb runs in a permanent state of near flood but when setup right it shouldn't leak. All pretty standard fare for the period really. The only real change is the type of blower being used and the way in which the mixture is delivered by it. As for injection I refer the honerable gentleman to the answer I gave some moments ago Grin
« Last Edit: November 01, 2013, 06:32:40 PM by Dslam » Logged
panthershaun
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« Reply #18 on: November 11, 2013, 10:16:26 AM »

I have an Aisin 300, purchased from Japan.. sneaked through custom's somehow so didn't pay any duty.. it is in excellent condition and looks to be hardly used.. oh and it arrived 5 day's after purchase  Grin
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you ain't it, till you've "Bobbed" a Brit!!!
Tony oily bike
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« Reply #19 on: November 11, 2013, 10:37:00 AM »

Hi Shaun,

Are you going to be running it as a "suck through" (ie fuel as well as air through the chamber)?
If so, what fuel? (pump gas, AvGas, methanol)

Guessing as its a 300, this is for the Panther?  Roll Eyes Cool......

Be interested to know if you're planning to strip the rotor covering....................
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There's nowt as light as a hole, so add lightness.

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Nitro doesn't add power, it multiplies it! Bob Loux, running 10.07 secs @138mph on a 650 normally aspirated Triumph drag bike in 1965!

"Incontinence Hotline" - please hold.
panthershaun
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« Reply #20 on: November 11, 2013, 11:09:02 AM »

I haven't got that far yet Tony.. saw it at the right price and thought thats got to go on the shelf...
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you ain't it, till you've "Bobbed" a Brit!!!
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