65Fastback
Active member
Hello,
I pulled my Holley 7448 from my OZ250 intake yesterday.
I saw a few things that raises questions to me and now I am looking for some advise.
1. Previous owner of the engine glued the gaskets from carb to adapter and adapter to manifold with a white sealant.
Does this need to be? Checking the surface flatness with a steel ruler, I can see some light shining through. Will new gaskets be enough or is surface flattening advised? Or sealer?
2. In the intake plenum under the carb I see a decent amount of fuel staying between the fins of the plenum.
The car was normally driven until I put it to its winter location 3 weeks ago. Only 1 or 2 acc pump actions in between while carb removal. I have no idea why the fuel collects there respectively where I am THAT rich.
3. My transfer slots are fully closed when trottle is in idle position! I am on 18 degr. ignition advance with full manifold vacuum as this is the best setup for cold engine run, which runs worse when I go down with initial + vacuum advance. IMS 1.5 turns out, fuel bowl level checked. 800 rpm idle.
Do I need to work on "square" transfer slots at idle or leave it as it is?
I pulled the carb for cleaning and for suspect of a slight vacuum leak, especially when engine is cold.
Thanks in advance.
Cheers
Joerg
I pulled my Holley 7448 from my OZ250 intake yesterday.
I saw a few things that raises questions to me and now I am looking for some advise.
1. Previous owner of the engine glued the gaskets from carb to adapter and adapter to manifold with a white sealant.
Does this need to be? Checking the surface flatness with a steel ruler, I can see some light shining through. Will new gaskets be enough or is surface flattening advised? Or sealer?
2. In the intake plenum under the carb I see a decent amount of fuel staying between the fins of the plenum.
The car was normally driven until I put it to its winter location 3 weeks ago. Only 1 or 2 acc pump actions in between while carb removal. I have no idea why the fuel collects there respectively where I am THAT rich.
3. My transfer slots are fully closed when trottle is in idle position! I am on 18 degr. ignition advance with full manifold vacuum as this is the best setup for cold engine run, which runs worse when I go down with initial + vacuum advance. IMS 1.5 turns out, fuel bowl level checked. 800 rpm idle.
Do I need to work on "square" transfer slots at idle or leave it as it is?
I pulled the carb for cleaning and for suspect of a slight vacuum leak, especially when engine is cold.
Thanks in advance.
Cheers
Joerg