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Big Block Talk! Everything about swapping a big block engine into your cart! |
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04-18-2011, 09:33 AM | #1 |
Gone Wild
Join Date: Oct 2010
Location: Central New York
Posts: 812
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Duromax 16 HP Valve Springs
I am going to pull the governor out of my 16 HP Duromax ( brand new motor). Do I need to change the stock valve springs to heavier springs? Would putting in heavier springs with the possible intent in the future to change the cam hurt performance while stock? Thanks again to all you more knowledegable!!!
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04-18-2011, 10:17 PM | #2 |
Vegas modded 420
Join Date: Jun 2009
Location: West MI
Posts: 15,433
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Re: Duromax 16 HP Valve Springs
Take a look at the performance kits for those at AGK and NR, etc. I think you only need to put some shims under them but not sure. The one I run does not seem to float the valves but it sure dies off on top. Timing is not advanced. I am going with a 4 degree key and cut head, guy I talked to said nothing about springs. Said should not need with stock cam, and you don't want lots of rpm with stock flywheel either or it blows up. But says stock cam will not rev over 5500 depending. Hard to say everyone has a different story on these. Also make sure the ign coil is bolted on tight, if it comes loose it can blow the flywheel they say. I never checked this one doh. Since that is easy enough to deal with in the cart I'm not worrying about it for now unless I learn otherwise.
Nr has springs listed not sure what ones, only $59. http://www.nr-racing.com/390hopupkits.htm |
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