The third-generation BMW 3 Series, higher generally known as the E36, spawned a curious short-tailed model known as the Compact. Up entrance nonetheless, it was all common 3 Series, that means there’s room for one in all BMW’s signature straight sixes.

We’d counsel choosing one of many extra highly effective variations of the M52 powerplant, reminiscent of the two.8 deployed within the up to date 328i, 528i, 728i and Z3. It’s a easy swap within the E36 Compact, though it’s barely extra complicated within the later E46 Compact.

Of course, you can additionally use the S50 engine from the M3, which was provided with as much as 320bhp. Or you can go bonkers and cram a 4.7-litre V8 in there, simply as tuning home Hartge did.

Given the huge enhance in energy provided by a swap, additionally, you will be desirous to improve the automobile’s chassis to manage.

Thankfully, as a result of the compacts’ entrance ends are equivalent to their bigger 3 Series twins, there are many components to select from. You may even choose to swap within the suspension set-up from the M3, must you want.

If your Compact is an E36, it’s a bit trickier to finesse the rear finish. That’s as a result of it used the trailing-arm rear suspension set-up from the earlier 3 Series saloon, the E30, which may make it really feel slippery when pushed exhausting.

The E46 Compact shared its rear axle with the up to date saloon, so it’s a lot simpler to improve.

Regardless, a Compact may be very simple to show right into a speedy scorching rod. Best of all, it’s a undertaking that can neither incinerate your pockets nor fry your mind in making an attempt to work it out.