SS50/Sprinter port timings

[Juan Kerr]

Does anyone have any information on the differance between the performance barrels/pistons and the standard items?I know there's a differance but the part numbers are the same.My friend has a SS 90 so that isn't a problem but neither of us has seen a SS 50/Sprinter item in the flesh so to speak.

If anyone can help I would appreciate it.

Thank you.

[rasputin]

v50:

transfers: 100° (6,2 mm)

exhaust: 142° (12,2 mm)

compression: 7,2

ss50:

transfers: 124° (9,2 mm)

exhaust: 160° (15,2 mm)

compression: 8,7

the ss50 has a race crank with a longer intake duration.

r

[Juan Kerr]

Many thanks,do you happen to know the crank duration too?

Thanks again.

[rasputin]

no exact timings, but it's around 165...170 degrees.

r

[Juan Kerr]

Thank you my friend,you've been a great help.

Danke.