The V8 Owners Forum -

Hi,

Please help me work out what to connect to where from these images (hopefully you can see them if I've done it right!):





So far I've got (A) going to the top of the coolant expansion tank, but I don't know where the others go. Anyone help?

Also, on the carbs should the fuel overflow pipes go anywhere or just be left open near the bottom of the car (so any fuel overflow doesn't go onto a hot engine or exhaust)?

Thanks!

A - Bleed - take to expansion tank or top of rad to avoid airlocks in the manifold
B & D - don't know
C - brake servo vacuum
E - Auto transmission vacuum

B is for the Auto Choke (Used to be an AED, now it's FASD I think, which is the blue thing if I'm not mistaken) and D is probably the coolant temperature sensor for it, although it doesn't show up very clearly on my screen.

harvey wrote:B is for the Auto Choke (Used to be an AED, now it's FASD I think, which is the blue thing if I'm not mistaken) and D is probably the coolant temperature sensor for it, although it doesn't show up very clearly on my screen.

Thanks; I've found the hose that connects B to the FASD unit. I've read up on the FASD unit and mine has been converted to a manual choke at some time, so I wonder if I can just block D off?

There are also two electrical connections for the "delay valve" which sits between the FASD unit and the carb, and connects to a "FASD control unit" which I don't have. I'm hoping that I don't need to wire this up (due to the manual choke conversion), but it worries me that it sits between the blue unit and the carb so may still be needed?

Cheers!

ChrisJC wrote:A - Bleed - take to expansion tank or top of rad to avoid airlocks in the manifold
B & D - don't know
C - brake servo vacuum
E - Auto transmission vacuum

Thanks, I'll just block them off then (manual gearbox and no servo assisted brakes!).

Sammy wrote:I've read up on the FASD unit and mine has been converted to a manual choke at some time, so I wonder if I can just block D off?

I can't see how you can block D off if the FASD is still in operation, but manually. You could only do it if you had chokes on the carbs and used the cable to operate those and do away with the FASD altogether.

Sammy wrote: Thanks, I'll just block them off then (manual gearbox and no servo assisted brakes!).

The holes are there but unused on a lot of manifolds, so there are proper plugs available to blank them off nice and neatly.

harvey wrote:

Sammy wrote:I've read up on the FASD unit and mine has been converted to a manual choke at some time, so I wonder if I can just block D off?

I can't see how you can block D off if the FASD is still in operation, but manually. You could only do it if you had chokes on the carbs and used the cable to operate those and do away with the FASD altogether.

I appear to have this fitted http://www.roversd1.nl/sd1web/fasdman.html which has a manual choke cable and does away with the "temperature sensitive capsule" which I'm guessing is what D would have connected to? It does appear that I may still need a FASD Control unit which is wired to the FASD "delay switch", the ignition switch and the coil. This FASD looks like it could be a real pain!

Personally, I'd chuck that lot in the skip and fit a nice pair of HIF6's on that manifold, or if not on their own manifold and use that choke cable to operate them.