SuperMattyP

iTrader: (1)

Does anyone know if there is a simple adapter available to bolt a 4port intake manifold onto a 6port NA engine?

I could make my own but would prefer to just buy something simple if it's readily available.

Thanks!

Slevin_FD

iTrader: (26)

Why would you want to do this??

SuperMattyP

iTrader: (1)

I thought it was clear but I guess not.

I'm wanting to put an intake manifold made for a 4port engine on my 6port engine.

cptpain

iTrader: (1)

again..... WHY?

kevk

dude it does not work that way those two diffirent engines all the way down to the irons

SuperMattyP

iTrader: (1)

It appears to me that the only difference is in the size/shape of the ports on the front and rear of the intake manifold. It looks to me like a simple spacer that bridges those two openings would suffice.

Is there something other than that I'm missing? I don't have a 4port engine here to test fit so I'm going by what i can see in pictures.

Sch1Tz0

Isn't that about like buying a prize bull for for breeding purposes and eating his ***** for a snack????!!????

Japan2LA

iTrader: (256)

Yes, there is an adapter to go from 13B 4 port to 13B 6 port..

I made 30 of them on the CNC mill back in 2004. All of them sold.. would make more if they were more in demand...

Lately when asked I just for this, I just weld the 4 port manifold up, and then re- machine it to fit the 6 port motor

In this thread:

https://www.rx7club.com/1st-generation-rx-7-1979-1985-parts-101/brand-new-13b-4-port-13b-6-port-48-idf-intake-manifolds-f-s-882061/

You can see where I took a 13B 4 port manifold and changed it to 13B 6 port...

peejay

I was playing with it the other way - I wanted to put my much-modified 6-port intake on early-style 4-port housings. (It was modified to port-match to Turbo II housings - bolt pattern is the same, but the runners are just a little different )

I think there might be enough metal to drill and tap, but it'd be sketchy. And of course, the port mismatch.

SuperMattyP

iTrader: (1)

Thank you. This answered my question perfectly. You don't happen to have any of those carbs or manifolds still for sale do you?

rxtasy3

iTrader: (2)

if u go back and read his reply, he said all the manifolds sold. possibly why the thread is now closed.

Japan2LA

iTrader: (256)

Actually I do..

I have about 25 of the Brand New 13B 4 port IDF manifolds left

And..

I still have the one in the pics, I modified from 13b 4 port to 13B 6 port...


In regards to the 48 IDF carb, I dont have any used ones...but I do have 2 Brand New..

See the pics

Japan2LA

iTrader: (256)

The modified 6 port manifold is $350.00 Shipped

The New 48 IDF carb is........, I need to check the price on this on Monday..cant remember what I paid for them...Need to look at the invoice which is at the shop...