M52 Tuning

Post Sat Dec 27, 2014 7:17 pm

So how do i make this engine a bit higher hp.......must be n/a. My engine is out of a E36 323i

Post Sat Dec 27, 2014 8:46 pm

Replace it with one from a 328i, or even a 330i.

Post Sat Dec 27, 2014 9:00 pm

Throw it away and get a single vanos M52B28 from an earlier car

Post Sat Dec 27, 2014 9:02 pm

Bollox, is the engine the wrong one for a conversion...what is the best one to go for. Happy to change the engine

Post Sun Dec 28, 2014 7:03 pm

As its got the M52B25 in it, is it just a straight swap to put the M25B28 into it?

How long would it take a compentant mechanic to do it?

Post Sun Dec 28, 2014 7:26 pm

8 to 12 hours

Post Sun Dec 28, 2014 8:46 pm

If the engine its form E46 you got M52B25Tu (2x vanos).
Quickest and most powerful replacment is M52B28Tu. Should be p&p

Fitting M54 would need a minor modifications

Post Sun Dec 28, 2014 9:12 pm

The current engine is from an e36 323i, I've edited my first post

Post Sun Dec 28, 2014 10:55 pm

Muzz2676 wrote:The current engine is from an e36 323i, I've edited my first post

Its still a waste of time tuning. 2.8 is what you need

Post Mon Dec 29, 2014 10:06 am

DanThe wrote:
Muzz2676 wrote:The current engine is from an e36 323i, I've edited my first post
Its still a waste of time tuning. 2.8 is what you need

Why the feck would someone go to the trouble of converting to m52b25, now I'm going to have to pay to have that ripped out!

Post Mon Dec 29, 2014 1:10 pm

First and the best modyfikaction without changing engine to M52B28 is intake manifold from M50B25.

Post Mon Dec 29, 2014 3:18 pm

Most likely because it was cheap, which would make you wonder about the quality of the rest of the conversion

Post Mon Dec 29, 2014 4:17 pm

Grzesiek325i wrote:First and the best modyfikaction without changing engine to M52B28 is intake manifold from M50B25.

Its got an M50 intake manifold.

I just need to get the car and see what I've ended up with

Post Mon Dec 29, 2014 4:49 pm

The guy I've bought it from owns a BMW specialist garage and has rebuilt the car after getting off the previous owner

Post Mon Dec 29, 2014 5:30 pm

As you've just bought the car, I'd suggest just getting in, driving it and having some fun for a while. Forget making it faster until you've learnt to drive it.

Then as above, get yourself an M52B28... and while you're enjoying driving the car, build a tasty M52B30

Post Mon Dec 29, 2014 6:33 pm

I agree, not a bad plan.

I've got a bit of experience with RWD with no driver aids, had a 360hp Lotus Elise with a supercharged and charge cooled K20a in it, weighed 800kg

Should be okay with this

Post Mon Dec 29, 2014 6:35 pm

Post Mon Dec 29, 2014 8:34 pm

M52B30 please enlighten me.......

Post Mon Dec 29, 2014 9:03 pm

I believe the basic ingredients are pistons, rods and crank from an M54B30. There's a few being built on here so a search should bring up some details.

Post Mon Dec 29, 2014 9:07 pm

Sounds good for the future. Who here can source build and fit such an engine?

Post Mon Dec 29, 2014 9:48 pm

You are using bottom end from M54B30 with block and head from M52B28.

imho its better to swap M54B30 in good condition.

Proper building engine its not a easy job

Post Wed Dec 31, 2014 7:39 pm

Muzz2676 wrote:Sounds good for the future. Who here can source build and fit such an engine?

Its easier for you to just fit an M52B28 and use it as is, plenty out there.... unless you have the time to build an engine and the associated things to go with it. I saw your thread on CS - search my username on there and you will find my M54 engine build thread.