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1800/ 2litre compatability
twobus - September 15th, 2002 at 08:20 PM

Does anyone know if I can put the top end of a 2 litre together with an 1800 bottom end together and is an auto 1800 able to be mated up to a manual (Type 3 IRS) gearbox.


Dasdubber - September 15th, 2002 at 10:54 PM

Not 100% sure but I know you can drop in a 2L bottom end into a 1.8 case, and use the 1.8 cam, lifters etc etc.

I am using an 1800 case with a 2L crank and rods, with the 1800 cam reground and 2L heads (with 1800 valves installed) for my type IV rebuild (to go into my 63 bug).

Bit confusing!!
Alan


Phil74Camper - September 17th, 2002 at 10:40 AM

Yes all Type 4 engines use the same case, so all the parts are interchangeable.

1800 engines use 93mm cylinders, while 2000cc engines use 94mm, so there's not much difference there. The 2-litre cylinders will slide right into your 1800 case.

The 2-litre crank has 5mm more stroke than the 1800, thanks to having offset-ground rod journals, but it will work perfectly in an 1800 case. You will have to use 2-litre rods of course.


Baja Wes - September 17th, 2002 at 01:07 PM

RE: the gearbox compatibility

You will obviously need a manual 1800 flywheel for your type 4 engine. The auto set-up on the engine won't work. Use the 1800 clutch and pressure plate. They will work with the type 3 throw-out bearing and starter.

The prob is the input shaft. The type 4 ones are longer. So you either need to put the longer type 4 input shaft in the type 3 gearbox, or put a bush in the type 4 flywheel for the shorter shaft


twobus - September 17th, 2002 at 03:06 PM

does anyone have anything to add!

[Edited on 24-9-2002 by twobus]