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Upgraded valve springs?

This is a discussion on Upgraded valve springs? within the Grom Performance forums, part of the Honda Grom Garage category; Originally Posted by CiscoSanJose I also switched my finbro 183 valve springs to DCR duel valve springs and my reason was I also am using ...

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Thread: Upgraded valve springs?

  1. #11
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    Quote Originally Posted by CiscoSanJose View Post
    I also switched my finbro 183 valve springs to DCR duel valve springs and my reason was I also am using DCR cam built for the BrianS 170 engine and also using BrianS recommended valve stem caps it is working on my BrianS 170 engine very well with over 7000 miles on the engine I figured it should work great on the Finbro 183.

    The only other changes will be that I will replace the rubber cap on the cam chain tension-er rod to the harden nylon cap that Franco sells thur his North America Finbro Garage once he gets his shipment in.

    For some reason I like DCR products, they build stuff for off road racing and race cars and motorcycles so they been around the race scene awhile.

    Replacing that rubber cap is a good idea. I might have to make one as well for my grom. Should be fairly easy to make

  2. #12
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    I changed to dcr dual valve springs because I had them sitting nearly a year so why not use them.


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    At what RPM do the stock valve springs float, and what's the safe rev limit with stiffer springs on stock bore/bottom end?

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