1500 boxer mod thoughts...

[evilgidget]

Ok everyone, Time for a head mashing mission - How to get a bit more poke from a 1.5 twincarb using only allocated lunch money that you'd rather starve to get the car warmed up for ...

My thoughts:

A pair of sealed carbs off a Daihatsu (G100 1 Litre) Charade Turbo and a supercharger off a toyota 4AGZE

Would require an upgraded electric fuel pump, an external fuel regulator, a few brackets knocked up & a pulley off the crank to run it, and if you're really keen you could even regraph the distributor, but it does have the advantage of not requiring expensive & complicated exhaust mods for a turbo, and if you used a clutched hub on the s/c, you could probably turn it off for when the wife drives it

Whatcha reckon? Potential for 130-150kw? (i know, a bit optimistiic... )

[beatle_bayly]

There may be some ideas here: http://www.alfaclub.org.au/philstorr/sirius/sirius2.htm

[evilgidget]

Oooh. Very bad... Much along the lines of what i'm thinking, except the charade unit uses blow-through carbs, making an intercooler a nice upgrade later

[genius]

Why not a Sprintex twin screw supercharger and 1.75 SU carb !!

[Eddie W]

Hi all, new kid on the block here. Finally after Admins help I am able to post.
Re the super charger idea I've been thinking about this for some time. I agree that the 4AGZE blower should be perfect and reasonably available. The existing Dellortos can be blown through if the fuel pressure regulator is linked to the manifold pressure and the correct supercharger emulsion tubes are used. You would also need a dump valve a la turbo setups as on overun with the butterflies closed the "charger is still boosting and the vibration is something else. It's a bit of a toss up between suck through and blow through. Suck through is simpler in many ways, blow through offers the option of an intercooler and using the existing carbs. Without the advantages of an ECU and anti Knock, a modified advance curve for the dizzie would be essential . Oil cooling a big reliability advantage as blown motors generate a lot of heat and your oil does a surprising amount of cooling in an engine.
Regards Eddie

[kaBOOM]

Quote:

Originally Posted by beatle_bayly There may be some ideas here: http://www.alfaclub.org.au/philstorr/sirius/sirius2.htm

[the_angel]

So that's whats gonna happen to my car, hey?
Hopefully this will be my chance to work on the engine and not just the aesthetics of the car (though one could argue that alfa's are more about aesthetics than anything else, it's the italian thing). I do like pretty things, but I'd love to know how to rebuild my engine. I am told soon I will have to rebuild my gearbox (damn lazy boyfriend/mechanic....lol.... jk)