16v ABF Conversion

Afternoon all.
After some advice from you knowledgable  bunch b4 I make a total F'up of things lol.

Am about to buy a 16V ABF Lump that's on R1 Carbs, BUT I am wanting to put the engine back to Injection.
I know a few of you may say stick with the Carb set up, but honestly Id like to go back to stock.
I feel as though its the perfect power to weight ratio.


So am I to run the ABF ECU for management and get the loom made up from exsisting MK1 loom?
Bear in mind my car is just a 1.8 Carb.
Does the scuttle area have to be knocked back as when the Inlet goes back on to the lump its a bit tall so to speak.
Or do I get a mk2 16V KR Inlet/Inj set up for the ABF
Confused dot com.. lol

The engine itself has the Gearbox and Mounts already with as its coming out of another Mk1 Conv.

Can anyone shed any light?
 

The ABF uses digital fuel injection while the KR uses mechanical fuel injection (and no computer either, all done by the throat size and profile of the injection unit, with a bit of help/variation from the pressure set by the WUR.

So I'd not advise just swapping the KR injection stuff onto an ABF without knowledge of the KR injection system……

I believe the extra height issue is because the ABF is 12mm taller, that's in the block, I don't think the inlet stuff saves much/anything? (Someone else with more detail knowledge might help better here).

Either way, you're going to need to 'convert' from carb fuelling, which basically operates at no pressure (it sucks the fuel from the tank via a mechanical pump which admits fuel to the carb just over 0psig) to providing fuel at a suitable pressure for the fuel injection of your choice. Lots of variations of how to do it. Also you might need to incorporate a return line under pressure too?

paul_c said

The ABF uses digital fuel injection while the KR uses mechanical fuel injection (and no computer either, all done by the throat size and profile of the injection unit, with a bit of help/variation from the pressure set by the WUR.

So I'd not advise just swapping the KR injection stuff onto an ABF without knowledge of the KR injection system……

I believe the extra height issue is because the ABF is 12mm taller, that's in the block, I don't think the inlet stuff saves much/anything? (Someone else with more detail knowledge might help better here).

Either way, you're going to need to 'convert' from carb fuelling, which basically operates at no pressure (it sucks the fuel from the tank via a mechanical pump which admits fuel to the carb just over 0psig) to providing fuel at a suitable pressure for the fuel injection of your choice. Lots of variations of how to do it. Also you might need to incorporate a return line under pressure too?

Hi Paul, Thanks for the heads up.
Apparently the 9A block is shorter than the standard Golf ABF.
I really do need to find out what the engine code is in the one I'm supposedly buying.
The engine is coming with the Fuel Pump, and off course I'm gonna have to get another loom.

mjvr6 said

Apparently the 9A block is shorter than the standard Golf ABF.

The engine is coming with the Fuel Pump……….

Back when I did my engine conversion, 2.0 16V blocks were relatively easy to find (just needed to travel, since they're normally collection only). Indeed there are some 2.0 16V which are less tall; and some which are tall like the ABF. There's a few other codes too but I don't know them off the top of my head.

I am surprised nobody that has done an ABF conversion has helped out with the specific details on dealing with the taller block, maybe they will reply soon. I only know its taller, and that not all 16V exhaust manifolds will work with it.

The fuel pump will be useless for you, since its an in-tank pump on the Mk3 ABF Golf which won't fit into a Mk1 Golf tank. You'll need to do your own research for a suitable pump, whatever the conversion you do, since you're starting from a carburettor car and none of the engines you are considering can accept the mechanical pump screwed into the side of the block.

paul_c said

mjvr6 said

Apparently the 9A block is shorter than the standard Golf ABF.

The engine is coming with the Fuel Pump……….

Back when I did my engine conversion, 2.0 16V blocks were relatively easy to find (just needed to travel, since they're normally collection only). Indeed there are some 2.0 16V which are less tall; and some which are tall like the ABF. There's a few other codes too but I don't know them off the top of my head.

I am surprised nobody that has done an ABF conversion has helped out with the specific details on dealing with the taller block, maybe they will reply soon. I only know its taller, and that not all 16V exhaust manifolds will work with it.

The fuel pump will be useless for you, since its an in-tank pump on the Mk3 ABF Golf which won't fit into a Mk1 Golf tank. You'll need to do your own research for a suitable pump, whatever the conversion you do, since you're starting from a carburettor car and none of the engines you are considering can accept the mechanical pump screwed into the side of the block.

Thank you man!!
Will do some more research.