Thanks. They are 36/36 (simultaneous opening) Webers, rather than the more common 32/36 (progessive) Weber DGV type.

See the article with photos and details here:


Ernie's Twin-Weber Downdraft

The Jets are 140's for the primaries and 140's for the secondaries. I had 120's for the primaries before the Supercharger. I upped them because I figured I needed more fuel.

Datsa73 - what kind of jetting have you done to the Webers?

["BTW, Your car is everything I love in a 1200. A two door seedan, (DROOL) and a force fed A series on the bottle. It couldn't get much better!"]

Thanks!!

I run one NOS and one Fuel nozzle right into the intake between the two carbs.
I have only ran the car on an 1/8th mile track at 9 second before the supercharger. I won't know new times until tomorrow.
I am running a electric fuel pump that pushes 8-10 pounds of pressure which seems to work fine.
The blower is a screw type and it does look like an eaton. Not sure if it really is. You can google them on ebay. They run about $450. It is clutch drive so I installed a switch on the dash.

It seems to run fine. I am still able to run my RPM's up to 8000 on full boost with NOS. The A15 motor is really holding out.
I do plan on rebuilding it over the winter. I new set of rings and bearings would be worth it since its been about 10 years since it's last rebuild.

COOL!

i remeber seeing a post on this car a couple of months ago, but i didn't relise it was supercharged!

What time does it run down the 1/4 mile?

I'm very interested to know more about this set up!

50hp shot, do you run like two nozzles, (one per carb plenum) or four (one per cyl)?
I'm slowly fitting nitrous to my supercharged A15. My set up is drawthrough, and I have my nozzle mounted in through the side of the plate which adapts the carb to the supercharger.
What 1/4 mile times has your car run thus far?
What fuel pump do you run to supply your nitrous system? Remember when your manifold is on boost, that fuel supply to the nozzle will have to overcome the boost pressure, potentially reducing the amount of fuel delivered and creating the risk of a dreaded lean out. Not trying to sound preachy, (it looks like you know what you're doing) just offering some advise.
Is your blower an eaton, or some variety of screw blower?


BTW, Your car is everything I love in a 1200. A two door seedan, (DROOL) and a force fed A series on the bottle. It couldn't get much better!

I'll try and get a video on Friday. It was pain to tune. I'd take it out and run it then have to pull the box and tune the carbs. Take it out again and do the same thing over again. In and out of the garage. Finally got it where I want it.
Webers are 32/36's. No carb gaskets blown yet.

I LIKE!

Would It be possible to run a similar set up with dual su's?

looks like a 32/36 weber..... bet that will be a prick to tune for boost