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Drew_Dye 10-27-2009 11:33 AM

Boosting a E21 320i
I'm new to this forum for the simple reason that I don't have a BMW, but I'm interested in buying one. I've been focusing my search mostly on 325's, but I found a good deal on a '82 320i. It's been garaged, though it's been sitting for about two years. Based on specifications for weight and horsepower for the two models, it clearly trails any 325 in the horsepower-to-weight ratio department, but I got to thinking that the shortfall could be overcome using a supercharger and some moderate boost. This leads me to two questions:
1) How much boost would I likely need to eliminate the power gap?
2) Can the short block handle the additional stresses without having to resort to a full teardown?
A little more power would make this car a nice ride in my humble opinion and, with the popular focus seemingly being on E30 and later cars, a rather unique one as well. Any feedback would be appreciated, as I haven't made my purchase yet. Thank you.

Luccia at Pelican Parts 03-03-2015 06:26 PM


You might be able to find something in this article here: Pelican Technical Article: Turbos and Superchargers for Your BMW

If not please don't hesitate to post a comment and have a technician better answer your questions.

nancy2809 02-23-2016 12:49 AM

I have also bmw.
I need some description about bmw.

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