3B and B engine, thermostat housing differences

[Sean Allan]

I ended up using the thermostat housing from the 3B engine and just running a hose from point A (thermostat housing) to point B (Radiator). It appears as if there is an external coolant return line on the B engine and a internal coolant reutrn line build into the water pump on the 3B engine.

Cheers
Sean.
PS: email me at sean.allan@powertechlabs.com if you want used B engine parts!

 

[bj 666]

General 'B' and '3B' differences:

1) Exhaust manifold bolts are larger diameter thread size
(M6 = B to M8 = 3B)

Are the B and 3B exhaust manifolds the same apart from the stud size?

As in they will be able to work/fit on either motor, ie same dimensions apart from the stud size?

So i can get a manifold and turbo set up from a 3B and bolt it on to my B engine?

 

[Sean Allan]

Are the B and 3B exhaust manifolds the same apart from the stud size?

As in they will be able to work/fit on either motor, ie same dimensions apart from the stud size?

So i can get a manifold and turbo set up from a 3B and bolt it on to my B engine?

Um... I'm not sure. All I know is that I drilled the holes larger 'B' manifold and then installed it onto a 3B engine. Worked for me!
YMMV

Sean.