Carb & Manifold Sizes

[PHAETON1]

Ok

Dumb question

What is the correct size for 67 /12 SU Carbs? and are the manifold sizes different from the 1600 AND 2000? Too many mixed up parts. How do you determine the correct sizes?

Thanks

[Gregs672000]

All 2000 SUs were 46mm as I recall. The manifolds will be clearly different, with the 1600 being smaller.

[nismou20]

2000 are 46 mm and have a 4 Bolt square carb mating surface. 1600 about 38 mm and believe 2 Bolt diagonal carb mounts.