Don't want to hijack nemesis' thread!
Mc Guinn wanted to know what tricks there are to tuning the boxer engines. I wouldn't mind knowing more too. Here's my tuppence worth:
- decent airfilter and exhaust will add a good few hp.
- cat removal - anyone know how much power that could add?
- I've been told that the 1.7 unit was detuned when it went into the 145 to make it smoother. That stacks: it was 137bhp in the 33 and 129bhp in the 145. So retune it.
Don't bother with the cams - they're good as they are. If you put a fast road cam on, it will only mean you have to rev the nuts off the thing just to get away from the lights.
I don't know of anyone who's done this, but it must be possible (and not THAT hard): The old carb 1.7 33s used to pull very smoothly indeed. I reckon a pair of twin choke 45 Dellorto or Weber carbs would increase power and give you a bit more low end grunt too. If anyone has tried it in a 145, i'd like to hear more!
Matt (a regular poster on the 33 pages at www.alfa-pages.co.uk)
currently has a 33 in the workshop being tuned to about 180bhp. That's effectively the same engine as a 145, so there's no reason why you couldn't do the same.
Your thoughts, gentlemen!