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gt550 help with barels stud spacing
Posted: Mon Dec 01, 2014 5:43 am
by link
hi can anyone tell me the distances of the barrel studs on an early 550 engine. eg 120mm by 120mm or does anyone have barrels they would part with or an old gasket they would measure..thanks in advance Link
Re: gt550 help with barels stud spacing
Posted: Mon Dec 01, 2014 9:04 pm
by Cliff
Bottom or base studs, 86.0 mm center to center on my 1974.
Top or head studs, 62.5 mm.
Why do you need to know??
Re: gt550 help with barels stud spacing
Posted: Tue Dec 02, 2014 1:46 am
by link
hi cliff thanks i am after barrels for a project. would you be able to measure the barrel height cases to top(roughly is fine), and by any chance would you or someone know the distance to gudgeon from the top of piston. Again thanks a lot for your time. Link
Re: gt550 help with barels stud spacing
Posted: Tue Dec 02, 2014 6:43 pm
by Cliff
Barrels are approx. 106.10 mm from base to top, plus approx. 25.4 mm of the cylinder sleeve protruding below. Total sleeve length, from head gasket surface to bottom is approx. 131.5 mm.. Standard bore/stroke is 61 X 62 mm for a GT550.
Top of piston crown to center of piston pin approx. 36.5 mm.
Are you looking for a set of stock barrels for a GT550??