1.6rr
Typical gains are around 10-12hp.
If you did springs as suggested, it would be about $400 give or take. Going to a full roller rocker from the stock stamped pieces is one of the best bolt-on modifications IMHO. You lose friction, heat, and imprecision, and get more valve lift in the process. The new springs will make the swap a lot harder, but yours were probably shot a long time ago, and that will seem to wake up your engine as well.
You may or may not have to trim your valve cover supports a bit, some do and some don't.
You may or may not have to trim your valve cover supports a bit, some do and some don't.
You can run a 3/8 stud S/A rocker and not have to upgrade to 7/16 studs and guideplates. IMO if youre gonna change springs, might as well go studs and guideplates whiles its apart.
So heres a list:
1.6 pro mag non sa
7/16 studs
GM guideplate or isky adjustable
Valve springs
You used to be able to by a crane 10308 valve spring set the was perfect for this swap. Not sure on its availability anymore.
So heres a list:
1.6 pro mag non sa
7/16 studs
GM guideplate or isky adjustable
Valve springs
You used to be able to by a crane 10308 valve spring set the was perfect for this swap. Not sure on its availability anymore.
You can run a 3/8 stud S/A rocker and not have to upgrade to 7/16 studs and guideplates. IMO if youre gonna change springs, might as well go studs and guideplates whiles its apart.
So heres a list:
1.6 pro mag non sa
7/16 studs
GM guideplate or isky adjustable
Valve springs
You used to be able to by a crane 10308 valve spring set the was perfect for this swap. Not sure on its availability anymore.
So heres a list:
1.6 pro mag non sa
7/16 studs
GM guideplate or isky adjustable
Valve springs
You used to be able to by a crane 10308 valve spring set the was perfect for this swap. Not sure on its availability anymore.
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