Alfa Romeo Forum - View Single Post - For your perusal and entertainment - 164 12v vs 916 GTA 24v 3.0 Busso
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75evo
Status: -
AO Member
 
Join Date: Oct 2001
Location: Ipoh, Malaysia
Posts: 223
The 3.0 24V injector plates are 42mm ID. The bug QV runners are 45mm OD, same as the GTA runners. The 2.5 24V ones are smaller, maybe the same size as the 12V. That's why even on the Squadra tuning site it specifically mentions that anyone with a 156/166 2.5 24V who wants to install the 45mm QV runners need to get 3.0 injector plates. The runners are also smaller on the engine injector plate side, unless you get the 24V QV or GTA.

Not sure what size the GTV runners are, but the 164 Super 24V has small runners, but the injector plates are the same compared to the QV ones.

Maybe the engine you got had swapped injector plates and runners? Sometimes it's possible used engines get all the goodies swapped.

2006 Honda Accord CL9 Type S 6-Speed
1996 155 2.5 V6, Squadra Tuning, RJR Cams
1995 164 Super 3.0 24V
2001 156 3.0 V6, Jim Kartalamakis 10mm cams,
1987 75 3.2 V6, Jim Kartalamakis 10mm cams, Stage2 Injectors, Autronic SM3 & CDI 500R
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