[budweiser_sud]

AH motorsports do indeed claim they can get 2L out of a 1.7L block - I reckon that is **** well near impossible unless they are creating new blocks from scratch as there just isn't much meat to bore out!

I really think turbo'ing an Alfa boxer isn't worth it, as London_Alfa already mentioned. You are far better off spending the money on handling and improving engine breathing.

I do have some literature that states that Alfa Romeo had actually started work on a 2L boxer engine when Fiat cut the project short in favour of the inline 4's that went into the 145/146/155's etc. Whether or not they built a unit with a 5 bearing crank is anyones guess (but probably not). Alfa really should have continued with the boxer series, they could have refined it a lot more and we wouldn't see so many **** Subaru WRX's on the roads

~Benjamin

 

[budweiser_sud]

That last installation was reasonably well executed, great work for a DIY job. But the unequal length headers may be an issue and it is not obvious if he has lowered the compression ratio. Also running boost through carburetors is probably asking for trouble - too much boost and you start blowing petrol out through the seals, and how about tuning?! Using carbs is probably asking for detonation unless he is running quite low boost.

What about supercharging? Has anyone seen a supercharger fitted to a 16V boxer? One issue I've heard with boosting the 16V is that pressue is lost through the seals where the Dellorto throttle bodies are.

The headers in the pictures that HughQV posted are a work of art!

~Benjamin

 

[budweiser_sud]

Rotation can be reversed by changing the orientation of the differential. Not always possible in most gearboxes, but I'm pretty sure this could be done on the 'sud/33 transaxle, however a new bottom plate would need to be manufactured.

"Reliability of 5 bearings" is rubbish if the engine is maintained with regular oil changes with a quality oil. Replacing an Alfa boxer engine with a WRX motor is a waste of money - you might as well buy a WRX. The 33's boxer is what gives the car its unique character to begin with. A 33 16v only needs a moderate increase in power from standard, spend the rest on handling, wheels, brakes etc and you will out perform a lot of modern cars - just ask Flyboxer!

~Benjamin

 

[budweiser_sud]

jol, that remote supercharger mount set up is very creative! Having to refabricate the whole intake manifold is probably the number one reason why many have failed at supercharging the Alfa boxer engine. Will you be installing a tensioner of some sort?

~Benjamin