Alfa romeo 156 3.0 V6 (the real GTA?)
Discussion
Hello, i'm Alan and i come from Slovenia. I'm reading pistonheads for quite some time and have decided to join
I owned quite a few cars (ford fiesta xr 2i, vw scirocco, some ordinary daily drivers and a lot of alfas )
My latest project car is an alfa 156 with 3.0 V6 24v engine from GTV.
Firstly it was planned to use her daily and occasionally on track, well that didn't last long...
But let's go from the beginning
Stock 2.5 v6
Then i put on some ultraleggeras (less rotational weight)
Bushes for suspension
Koni sport (rebound adjustable)
to be continued
I owned quite a few cars (ford fiesta xr 2i, vw scirocco, some ordinary daily drivers and a lot of alfas )
My latest project car is an alfa 156 with 3.0 V6 24v engine from GTV.
Firstly it was planned to use her daily and occasionally on track, well that didn't last long...
But let's go from the beginning
Stock 2.5 v6
Then i put on some ultraleggeras (less rotational weight)
Bushes for suspension
Koni sport (rebound adjustable)
to be continued
I'll stick to 3.0, it has shorter stroke and i prefer it over the 3.2
Ofcourse it's not a stock unit
3.0 engine has destroyed a bearing so i went for full overhaul and some tuning:
ports are big enough from the factory, so a just cleaned them and made nice knife edge inside
heads were skimmed 1 mm for 11:1 CR
AHM cams (0,8mm bigger lift and longer duration)
shiny crank
Ofcourse it's not a stock unit
3.0 engine has destroyed a bearing so i went for full overhaul and some tuning:
ports are big enough from the factory, so a just cleaned them and made nice knife edge inside
heads were skimmed 1 mm for 11:1 CR
AHM cams (0,8mm bigger lift and longer duration)
shiny crank
Cnc lightened flywheel and cerametallic clutch
And because you cant just lighten the flywheel on a V6 (it has an imbalance) i weighted all assembly and made bobweights for proper balancng of the crank
I also reduced the main pulley size by 10% so i can spin the engine higher without water pump cavitating (and also the pulley is 600g lighter now)
random pic :P
weighting
bobweights
And because you cant just lighten the flywheel on a V6 (it has an imbalance) i weighted all assembly and made bobweights for proper balancng of the crank
I also reduced the main pulley size by 10% so i can spin the engine higher without water pump cavitating (and also the pulley is 600g lighter now)
random pic :P
weighting
bobweights
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