325 to 328 Intake conversion

[CycleSi]

I have an E36 328i Coupe dedicated track car and several people have mentioned "why don't you fit the the intake from a 325i as it will give you extra power and it is a relatively inexpensive & easy job to do".

I've had a bit of a search on various forums but can't find out much. Ideally I'd like to buy everything in one kit and then get my local BMW specialist to fit it.

Can anybody tell me about this and who to contact to buy the kit. I don't really want to go searching scrapyards, etc.

Many thanks,

CycleSi

[E30M3SE]

bmw m50 conversion

[m444ttb]

Go on www.bmwowner.com (he may be on here but I'm not sure) and contact Alpina527. He has been producing high quality conversion kits for getting on a decade. It isn't anything like as simple as getting a 325 manifold and bolting it on. I don't even think it's a 3-series manifold he uses! I've had mine since 2006.

[4rephill]

m444ttb said:

Go on www.bmwowner.com (he may be on here but I'm not sure) and contact Alpina527. He has been producing high quality conversion kits for getting on a decade.

He is also about the only person who makes/made a complete fitting kit for the conversion in this country.
The USA have some ready made options when it comes to this conversion:

http://www.koperformance.com/BMW/engine/manifolds/...
http://m50manifold.com//index.php?option=com_front...

m444ttb said:

It isn't anything like as simple as getting a 325 manifold and bolting it on.

True

m444ttb said:

I don't even think it's a 3-series manifold he uses! I've had mine since 2006.

I believe it is a 3 series M50 manifold that is used, however, there are two different versions and you have to make sure you get the right one as one of them is not suitable for the conversion.

[m444ttb]

Could be. I know supplies were running low on the type he used. I think I had in my head it was e34 but no reason to think that's true. Either way the only kit I'd buy!

[CycleSi]

I'm a bit confused now (easily done).

So, is there someone in the UK I can buy the whole complete kit from?

[m444ttb]

Yes. User 'Alpina527' on www.bmwowner.com

[CycleSi]

Excellent - many thanks.

[Ti22]

Just google M50 manifold conversion.

I've done this conversion for a customer with the ebay Kit. It's straight forward.

http://www.rmeuropean.com/bmw-m50-manifold.aspx

[CycleSi]

I've contacted 'Alpina 527' and we're getting it all arranged.

Thanks for everyone's input.