Moss Motors, Ltd

I haven't found any simple options for a cold air intake with the Moss supercharger. The SU is against the firewall with little clearance for an intake tube. I've seen pictures of intake pipes routed behind the engine to the right front side through the radiator shroud OR the pedal box could be cut for clearance to the left side but I decided to try a more direct route.
Using the supplied air filter plate, a plenum was fabricated to deliver cold air through a 3.5" aluminum pipe and a K+N RF-1045 air filter mounted forward of the radiator shroud. The external profile dimensions of the original air filter were replicated forming a half cone, then a trapezoid shaped duct was attached with a 3.5" flange on the front side. The original air filter mounting cap is used to hold the assembly in place.
The idea was to use all the area possible between the choke and throttle cables and to clear the pedal box. The original cable mounting bracket is still used. The pedal box is not cut.
A notch was cut from a corner of the duct to clear the wheel well and provide as much length as possible so the 3.5" pipe will clear the supercharger on the way through the radiator shroud.
The center of the cone was a bit tricky but it is strong enough to hold to the original mounting bolt and cap nut. A new mounting bolt through the filter mounting plate and plenum serves to lock the assembly and prevent slipping. The intake pipes have 2 silicone hump couplings to allow for engine movement and vibration. Another radiator shroud was purchased on Ebay to assuage any guilt about cutting into my classic MGB.
 The clearance between the plenum and pedal box makes this installation a challenge but everything seems to fit. The K&N filter RF-1045 is an improvement over the original and is located forward of the radiator shroud. Next step is to fabricate a sheet metal partition between the filter and radiator to draw more cool air from the grille area. I have installed Dynamat insulation over the pipe sections and plenum since taking these pictures. 
 Horsepower is not the primary concern in this endeavor as this basically stock three main will probably never have to respond to a wide open throttle. She's an old girl now and she deserves some respect. The main objective is to reduce the chance of detonation and the effect is to save horsepower by maintaining a more dense air supply in extreme situations whether touring the wine country or crawling around town in hot weather.
More pictures: http://www.64mgb.com/intake.htm

Why don't you run the plenum vertically up to the underside of the hod/bonnet to an intake hole dressed up with the same vent chrome as the heater intake?

That way you get good fresh, cool air and you can lose all that excess plumbing.

 KP!

KP- I read about a supercharger intake duct run through the fresh air intake grille. It is too invasive for my liking. Too much cutting and permanant alteration. It could catch water in a carwash or rainstorm too. Same with a hood scoop and theres the esthetic challenge in choosing a scoop that doesnt look like a cheesy 70's add-on.

This setup is basically simple and completely reversable with no external modifications. It's not for everybody but it gets cooler air into the supercharger. Only the radiator shroud was cut and it is easily replaced if I ever wanted to go back to su's. ...Not very likely!

-Greg

Greg,

I think your solution is downright elegant, and it looks cool too. Black wrinkle paint on the bits near the carburetter would be real sharp, but that's just my flavoring preference

Cheers.

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Motorbill
From Lola to Land Rover, If it's British and has wheels, it's likely I've bloodied me knuckles thereupon

It is a gorgeous piece of work! It shows that a tremendous amount of thought was put in to the project. The vibration dampers are very clever. It's a pleasure to look at such fine work. You should be very proud. PJ

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You don't quit laughing when you get old, You get old when you quit laughing!

Not a standard fitment of the Moss Supercharger kit but never the less a Moss supercharger kit...fitted to a my Mini. Here was my solution,

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Oz Cooper
Classic Mini Product Manager UK


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