b14 -> b18ft engine swap

OJ · Post by OJ » 03 May 2006 06:04 pm

Hi

I've bought a '92 460 turbo and want to put the engine in my '87 340DL with b14

I read that the propshaft has to be modified, is this because it is too weak, or is it cause it won't fit? And how can I fix this problem?

Also, will the rest of the drivetrain handle the increase of power and torque?

Post by **classicswede** » 03 May 2006 08:49 pm

You may be able to get away with not modding the prop but are going to need bits from a 1.7 to make the engine fit.

Post by **340cbr** » 03 May 2006 09:58 pm

The propshaft will not handle if you go to more than 120hp.

You will need some bits from a 340 1.7, and need to modify some things...

OJ · Post by OJ » 04 May 2006 04:12 pm

what bits from the 1.7 340 do I need?

Website · Post by **antiekeradio** » 04 May 2006 05:59 pm

sump, engine supports, clutch housing (flywheel??)

Post by **classicswede** » 04 May 2006 08:07 pm

You will need the Sump , bellhousing ,clutch plate and engine mounts from the 1.7. You will need to retain the turbo flywheel clutch pressure plate and renix unit.
There are a number of existing threads on this subject posted by huskyracer with the turbo engine and myself with the 2ltr conversion most of which is the same.

Post by **foggyjames** » 05 May 2006 01:35 am

Prop is usually replaced on strength grounds, but I'd be tempted to change it anyway, as the 340 one is a crappy design.

Husky was telling me at the weekend that he just found out his prop was rated about about 100ftlb of torque LESS than he's putting through it! Oops! Silly people assuming 300s will be low powered...

cheers

James

Post by **340cbr** » 05 May 2006 01:37 am

You will need to change the inlet manifold and the turbo that comes with the b18ft is not the best to use in the 340 (everything goes in the wrong side)

Post by **redline** » 05 May 2006 08:21 am

340cbr wrote:You will need to change the inlet manifold and the turbo that comes with the b18ft is not the best to use in the 340 (everything goes in the wrong side)

not being dense but dos that apply to right hand drive cars ?

Post by **foggyjames** » 05 May 2006 05:32 pm

That's what Husky had to do...

cheers

James

Post by **classicswede** » 05 May 2006 10:18 pm

That is for all 300's as the throttle body is pointing at the bulhead on the later mpi manifolds.

Post by **340cbr** » 06 May 2006 01:13 am

In the RHD it's even worst...

Post by OJ » 19 May 2006 12:16 pm

Mine is LHD

Is it possible to use the inlet manifold from a b18f that has a center mounted inlet manifold? or do I have to modify the original one like Husky did?

Post by **340cbr** » 19 May 2006 12:24 pm

You can use that one but you need to modify it aswell. The "butterfly" /that's how we call it here) is different. It has two small holes instead of the big one in the 18ft inlet.

Post by OJ » 19 May 2006 12:37 pm

which inlet will be easiest to modify, the original one or the "butterfly"?

And is is as easy to modiify the inlet as Husky wrote on his homepage, just to "opened up the other side and welded on a new tube and flange"?