VX 2.0 Inlet manifold (Carbs)

[Tiny Tim]

Do I need to drain off the coolant to remove the inlet manifold?

 

 

 

Seven Goes Mad in Dorset

[Manxseven]

Tim,

only if it is water heated, does it have any coolant hoses connected to it?

 

What you doing?

 

Cheers,

Simon

 

Caterham Fireblade here

[Bob Simon]

You'll need to lower the coolant level below the top of the 16mm bypass hose that goes from the manifold to the submarine pipe. This is the the nipple in the manifold casting that's parallel to the manifold bores in front of #1. Remove that hose and the tiny air bleed hose that goes to the pastie tank.

 

 

-Bob

94 HPC VX Evo III

 

[Tiny Tim]

Simon, I am not convinced that I haven't got an air leak on the manifold as it is impossible to set the idle below 1000rpm. When I first assembled it I used a new gasket but didn't use any sealant (e.g Hylomar) which should have been alright (not a big fan of sealants!). But to elimanate any air leaks I thought I would take the manifold off and put a small amount of sealant on (should probably put a new gasket on as well).

 

The manifold does have a connection to the submarine pipe so it looks like I will have to drop the coolant level.

 

Tim

 

 

Seven Goes Mad in Dorset

[Bob Simon]

Tim,

 

If you've got a gasket leak, spraying carburetor cleaner about the manifold joints with the engine running might help locate the problem. The engine will change rpm when the spray hits the leak.

 

I you have the late model 152 Spanish DCOE 45 carbs, make sure the idle bleeds have not opened up. They were added to the original Weber design to allow balancing between the individual chokes on each carburetor. Personally, I have always kept my closed since I could not detect any balance problems. Others here may have differing opinions about the use of the idle bleeds, but I digress. If one is inadvertently opened too far, tick over can be altered.

 

 

-Bob

94 HPC VX Evo III