three sizes depending on volym/tuning level - for Volvo Amazon/Pv/P1800 please read the full text
Type1 B18/B20
Type2 B20/B22
Type3 B20-
Pipe dimensions (mm)
Type 1 44-44-61mm
Type 2 44-48-64mm
Type 3 44-51-64mm
These manifolds are intended for 140-series but is also fitted to other models like Amazon, Some modification to upper wishbone may be needed.
The angle of the tube can differ due to engine pads etc., plus the bodies differ from car to car.
When mounting a Type3 extractor manifold on a later model of the B20 engine, it may in some cases be cramped against the reinforcement of the lower aluminum cover against the gearbox.
In these cases, you have to grinde down a bit of the reinforcement.
The extractor pipes fit together with most intake manifolds for dual carburetors.
Also suitable for injection intake and for aluminium intake for double SU.
But they do NOT fit with DCD / DGV intake pipes, because the middle pipes collide with the intake pipe.
Note sports system 2 "Amazon does NOT fit directly with the manifolds, self-adjustment is required laterally" S-bend "plus step sleeve etc.