12a carb and intake question
#1
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12a carb and intake question
I acquired the car with the carb in the box. Rebuilt it cleaning all the crud off of it and put it back on the car. The car fired up and the carb probably needed a little tuning. After that the exhaust fell off and it was determined that a new exhaust system was needed. Took the carb back off and also took the intake off to clean and have better access to the exhaust manifold.
There are some problems with the carb. The main problem is that the choke doesnt work on the car. Took pictured of how I have the vacuum running from the car. I suspect that is the problem. It is hard to find a diagram of how that is supposed to be routed.
Also pictured is the intake. Plan on cutting the valve out of that and plugging the hole. Anything else I can do for it?
The car has a stock port 12a and it will have a rb road race header with long tube exhaust
There are some problems with the carb. The main problem is that the choke doesnt work on the car. Took pictured of how I have the vacuum running from the car. I suspect that is the problem. It is hard to find a diagram of how that is supposed to be routed.
Also pictured is the intake. Plan on cutting the valve out of that and plugging the hole. Anything else I can do for it?
The car has a stock port 12a and it will have a rb road race header with long tube exhaust
#4
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Cleaned up the air cleaner also will weld the holes shut. Also got rid of the warm air flapper door
Is this intake too restrictive?
All I want to do is keep a somewhat stock apperance under the hood
Is this intake too restrictive?
All I want to do is keep a somewhat stock apperance under the hood
#5
talking head
it is fine for a stock engine .. you may wish to upgrade it with a foam type oiled filter
IIRC it was the same as a 70's nissan patrol 6 cyl engine
( assuming those are pretty generic, world wide )
finerfilter and unifilter being the two brands that had rx7 listings ( at least where i am )
when you port the engine the single intake snout becomes restrictive
and the trick was to weld on another, or to drill a few holes around the circumference with a holesaw
and then cold duct the snout to the front of the car
you may wish to look at removing that anti back fire throttle plate under the carb
( or find an earlier manifold without it )
and the usual trick with that was to add longer studs and another phenolic spacer
and recut the missing crossover channel that side into the paired phelonic spacer
IIRC it was the same as a 70's nissan patrol 6 cyl engine
( assuming those are pretty generic, world wide )
finerfilter and unifilter being the two brands that had rx7 listings ( at least where i am )
when you port the engine the single intake snout becomes restrictive
and the trick was to weld on another, or to drill a few holes around the circumference with a holesaw
and then cold duct the snout to the front of the car
you may wish to look at removing that anti back fire throttle plate under the carb
( or find an earlier manifold without it )
and the usual trick with that was to add longer studs and another phenolic spacer
and recut the missing crossover channel that side into the paired phelonic spacer
#7
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I realized that the post above pictures didn't work.
Here is how I have the vacuum lines. I am pretty sure i have them wrong right now. how should they be routed?
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#8
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Here is the intake and the air cleaner.
I took the valve off of the intake manifold. Anything else I should do to it besides clean it up?
Air cleaner is stripped of its vacuum lines and I am going to weld the areas shut. I am also going to cut a strip out of the side and replace it with a screen for more air flow but I still like how the stock air cleaner looks
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