1200 Manifold- What carburetor Fit It?

128racecar · Post by **128racecar** » November 20th, 2011, 9:26 pm

With my new (to me) 79 Civic GT5 race car came a pile of parts, including a twin side draft manifold. The spacing between the center of each carburetor port is about 2 1/2 inches. Definitely smaller sidedraft carburetor than the huge twin Mikuni PHHs currently on the car. Any one know what carburetor would fit this manifold. Hopefully the pics below will help

Marc in Indy

Post by **Thor** » November 20th, 2011, 9:29 pm

I'm not near my Yoshimura manifold at present, but it looks awfully like it's for 2 x 35 dhlb dell'Ortos
Just mho, as ever.
Pete

Steph · Post by **Steph** » November 20th, 2011, 10:09 pm

That's the New Zealand produced dual 35mm Dellorto manifold that allows you to use the distributor in the standard position.

Steph · Post by **Steph** » November 21st, 2011, 2:19 am

If it relates to Dellortos I would look at both of the following links...

First one is Jim (Dr Zoom) who is someone I would love to see come back to the board.

http://www26.brinkster.com/drzoom/civichowto.htm

I like this one because the engines are the same capacity and put out similar power...

http://www.viva-lancia.com/fulvia/qanda ... llorto.php

In regards to the intake manifold from New Zealand, if you look at the manifold it shares a lot in common with the RS/EN4 manifolds, in as much as it has water jackets to warm the manifold, and outlet for the heater hose, and even bears a resemblance to the RS manifold IMO. These were produced in a partnership between Honda and Dennis Marwood at Performance Developments during the 70s. Marwood was the Dellorto distributor in New Zealand at the time, and oversaw much of the development of the ZR Civic, which was the highest performance engine that Honda ever fitted to a 1st gen Civic, sporting a Marwood-spec camshaft, and twin, dual-barrel 35mm Dellortos. For the record, Honda's manufacturing interests were overseen in New Zealand by Japanese executives sent out from Japan, so it wasn't just a local effort. During this period strict import tariffs were in place in NZ, making it a viable proposition to manufacture/assemble cars there, which motivated Honda to go into partnership with the New Zealand Motor Corporation. In fact, manufacture of Honda models continued there until 1998.

Anyway, I just thought I'd share some of the research I did on this manifold for others to read.

Bill · Post by **Bill** » November 21st, 2011, 4:18 am

Thanks Steph, for passing along the backstory on a rare part. We all need to thank the members that are looking into the history of the various parts and cars that are often overlooked. If you have some info or a story that tells about a part or car, or something related to Honda, please share the story with us all!

=Bill

RTR75 · Post by **RTR75** » November 21st, 2011, 5:05 pm

Nice manifold, I would have to agree that that one is for the Dellortor's.
But I would like to see the car???????!!!!!!! who owned it before, did you get the log book?
Any plans on putting it back on the track?
I have a GT-L (was an H Prod then GT-5) its posted here somewhere?
Good luck!

128racecar · Post by **128racecar** » November 21st, 2011, 6:42 pm

Yes, I have the logs back to the 1980s. Car was built from new as GT-5 car in 1980 for the San Francisco SCCA Region. Owned by Jim Wessel in DeKalb, IL from the 1990s to current. Raced both SCCA and Midwest Council until to the early 2000s. I have not gone over every log entry (there are 3 full log books, and I think there may be a couple missing), but there are at least 14 SCCA Runoffs Tech stickers on the car. Lots of cool race mods. My plan is to do some mild backdating to get the car to 1989 SCCA GT-5 specs so I can run it my vintage race car club here in the Midwest (VSCDA). Main thing I need to do is replace the Dual Mikunis with another setup, as I have to run the distibutor in the stock location. This is the 4th retired race car I have brought back to life, and I plan make this one a keeper. Here are some pics for fun!

Marc in Indy

Steph · Post by **Steph** » November 21st, 2011, 6:59 pm

The beauty of that manifold you posted pictures of is it will allow the distributor to be mounted in the stock position. It will even allow you to run the stock fuel pump, although obviously that wouldn't be able to supply enough fuel for what you're doing, but I believe it may have been capable of supplying the dual Dellorto 35s on the ZR Civic. Pete felt the ZR camshaft may have had a larger and more offset fuel pump 'lobe' to increase the pump stroke of the mechanical pump. My understanding is the Mikuni/Solex carburetor are very similar to the Dellortos, so you may be able to transfer them to the ZR manifold.

Is that a Caci manifold? I love the two hoses coming off the manifold and leading back to the brass T fitting.

128racecar · Post by **128racecar** » November 21st, 2011, 8:04 pm

The Mikunis on my car have a wider spacing than the manifold I posted, so I would need a set of different carburetor. Oh well, one more decision to make as to what manifold to run on my car...

Marc

TREVORM · Post by **TREVORM** » November 21st, 2011, 9:05 pm

such a nice car! :D
good luck with it.
do you have lots of info or any info on the engine build it has?

Steph, I dont think thats a CACI manifold. but then its hard to see.

128racer does the intake look like mine? but minus the custom thermostat holder:)
Im curious, just cause I can't find any info on this company or there intakes or what the name stands for.

Pete: you should run that set up already!! haha long past due

1StGenOfDurham

1StGenOfDurham

1200 Manifold- What carburetor Fit It?

1200 Manifold- What carburetor Fit It?