Hello all Does anyone have a bypass valve of a 355 they could post some dimensions for me please. Valve body width. Internal diameter. (Mount area) External diameter. (Mount area) MM dimensions please. TIA
Paul, the valve has some really strange protrustions, steps and tapers (internally and externally). For most of the inside, the diameter is 60mm. On the downstream side, there is a 5mm deep step from the lip of the flange. At this point, the internal diameter is 63.5. On the outside, the very ends of the valve (flanges) have an external diameter of 80.5mm. On the very centre (where the butterfly is), there is a raised section with an external diameter of 72mm. Between the centre and the flanges is a stepped down section with an external diameter of 66mm. So the thinnest thickness of the valve walls is 6mm (66 minus 60). Let me know if you need pictures (although, my spare valve is fairly black on the inside, it may be hard to take photos of it). I may have to draw a diagram.
Sorry, diagram above shows 80mm outside diameter... should be 80.5mm or thereabouts Version 2.. Image Unavailable, Please Login