Supercharged A15 in Datsun 1200

[Phlebmaster]

Gzilla, is this the same 1200 that I have seen years ago ( through the internet...) with dual downdraught set up???

 

I always thought about a dual downdraught set up, specially for Datsuns with clearance problems ( DCOEs hitting the brake booster and such )

 

What are the details of this manifold? I want to make a dual downdraught manifold for an L series and for an A series.

 

Jaime.____________________________________________________

 

Keep an eye on my project thread.......:D You will get your information for the L series intake set-up from there. This is an awesome set up for the A series, so I can say that it is a workable project for the L20b with some fine tuning.

[ggzilla]

Jaime, yes, same car. You can see in that list picture, he created a new box structure from aluminum plate. Then took an A14 manifold and cut off the runners. Welded them on the new box. All done at home.

[Pedro]

A quick pic of a guys 1200 sedan from New Zealand, same deal A15 + supercharger. Has a hole cut in the bonnet to let the filter through.

 

[Guest jaimesix]

Cool.

 

I see, that is that same 1200 I have been trying to trace for years! Gzilla, so he made it himself, that is great, that manifold he made must have good flow.

Any posibility of getting a pix of his intake manifold?

 

Phlebmaster, that is great too, I have both A and L series engines, I will follow your project.

 

Fly510, what kind of supercharger is that, fits very well and looks powerfull.

 

Jaime.__________________________________________________

[ggzilla]

Check out the photo spread and details here: Ernie's Supercharged A15

[Guest jaimesix]

Check out the photo spread and details here: Ernie's Supercharged A15

 

 

Thanks Ggzilla.

 

Pictures are fair, but still I can not see the bottom of it. In theory, would it be like individual carburetor seats? or one large seat for both units?

 

From studying Weber accessory lists, I can see that some BMWs and others have as option twin downdraughts. I am going to try find a pix of any of those manifolds, perhaps one of those with a modified flange to the intake ports would work.

 

If you know that guy , the owner of that 1200, why not suggest him making a few twin downdraught manifolds for both A and L series?? With plenty of customers in Australia, NZ, US, UK, Europe and South America, I guess it would be a good proposition.

 

Jaime._________________________________________________

[ggzilla]

It should be one DGAS for two cylinder. One DGAS for each two cylinders is good for just over 200 HP.

 

If it just goes into a big plenum, it is too much carburetion. One DGAS for all four cylinders is good for 200HP. Two for all four would be good for about 400HP.

 

Isn't that how it works?

[Guest jaimesix]

Yes, I agree, individual plenums should be the way. There are twin set ups ( downdraught ) for "Z" Dattos that are basically 2 separate systems. I thiink those bolt on to S/U factory manifolds.Through the S/U manifold there is the balance connector, but the plenums are separate.

 

Wish I could have a better look at that 1200 manifold.

 

Jaime.______________________________________________________

[72240z]

Just trying to chime in with ideas here, just what I found digging around.....

Edited March 20, 2009 by 72240z