Question 1

I'm interested to know how this would work with a fuel pump (non electric) would there be any modifications required to the reed valve assembly.

MB Scooters · Accepted Answer

When you fit a fuel pump there is a complicated arrangement of pipe work required to make the pump work.

If you know what you are doing on that side of things then you will have two choices!

1 drill and tap the reed block, or

2 drill and tap the casing.

This is where the the pulse pipe will pick up the crankcase pulse.

Its up to you where it goes.

There are different threads depending on your system, so we can not do this job for you.

Question 2

I have a question about "Reed valve assembly Vespa With alloy carburettor stub 4 petal PX/T5"
Could I use this as a 30mm manifold without the reedvalve until I can split the engine to modify the inlet properly.
 I know this sounds daft but I usually rebuild the engine over the winter so would do the inlet then .

MB Scooters · Accepted Answer

Yes you can use the reed manifold without modification, but how it works I cant say.

Question 3

I have a question about "Vespa P range Reed valve assembly, with alloy carburettor stub, 4 petal, MRB"
I' going  to fit onto my sprint (vnl2t) casings with reworked valve for Malossi rotatory valve manifold. Could i mantain the valve or should i rework it?
Is it possible to fit it without dismantle the motor from the frame?
Thank you.

MB Scooters · Accepted Answer

This manifold fits straight onto the engine. But you will get more from the engine if you rework the inlet port to work with a reed valve.

Question 4

I have a question about "Vespa P range Reed valve assembly, with alloy carburettor stub, 4 petal, MRB"

Looking at the product photo I cant really see how the carb attaches. The carb I want to use is a 30mm PHBH Dellorto. Do i need any extra parts or is everything in the kit?

MB Scooters · Accepted Answer

All you need is the carb mounting rubber. This is part number MBP0161 to suit the 30mm Dellorto.

Question 5

I have a question about "Vespa P range Reed valve assembly, with alloy carburettor stub, 4 petal, MRB"

I have this product and am installing it on my bike with a Dellorto 30mm carb.  I am using a Mikuni vacuum fuel pump and am familiar with how to set up the tubing and the manifold is tapped for a vacuum line.  My question is since the manifold sets the carb at an angle should I set the float height to correspond with the new angle or should the fuel pump compensate?

MB Scooters · Accepted Answer

We have never need to alter any float heights with our reed manifold as the angle is too much.

Vespa Reed valve manifold assembly, with alloy carburettor stub, 4 petal, MB