harder valves springs

[xbacax]

if I use a harder valve springs,

do I have to use hardend pushrods and pushrords tubes, to prevent of breaking or bending them?


best regards
baca

_________________
http://www.polskajazda.pl/Samochody/Volkswagen/Garbus/11266

[Red1600i]

No, single valve springs are no problem.

Double valve springs are a little bit too much for the series pushrods...

But, why?

The ACD engine will probably have serious trouble with it's hydraulic lifters.

[xbacax]

thanks for answering...

becouse I use sharper camshaft, and it's recomended to use harder valve springs with it. and I would like to change hydraulic in to solid lifters




best regards
baca

_________________
http://www.polskajazda.pl/Samochody/Volkswagen/Garbus/11266