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2WIDGN
MMT Member
Joined: Mon Aug 29, 2016 12:39 am Posts: 24
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Roller rockers vs factory?
Looks like roller rockers are easier to hold on to when adjusting clearances? Are there any other benefits?
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Wed Jul 17, 2019 5:26 am |
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MaXXis85
MMT Elite Member
Joined: Wed Jan 14, 2009 7:23 am Posts: 6233 Location: Tarkington, TX
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Re: Roller rockers vs factory?
They open and close the valve faster. They give you more lift. They also reduce friction on the valve stem. Now they also increase area under the curve, so you need to take that into account when setting up camshaft timing.
_________________ Bayou Surface Drive 337-351-0362 Tarkington, TX 77327
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Wed Jul 17, 2019 6:54 am |
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2WIDGN
MMT Member
Joined: Mon Aug 29, 2016 12:39 am Posts: 24
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Re: Roller rockers vs factory?
So, not something I can just swap out? I have to adjust the timing also?
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Wed Jul 17, 2019 10:00 pm |
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MaXXis85
MMT Elite Member
Joined: Wed Jan 14, 2009 7:23 am Posts: 6233 Location: Tarkington, TX
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Re: Roller rockers vs factory?
its a bolt on Mod. Its expensive for a basic hunt motor IMO. seat cam timing is the same but every point beyond that the valve duration is larger.. Its making your motor believe the cam is more aggressive. (simplest way to state it)
_________________ Bayou Surface Drive 337-351-0362 Tarkington, TX 77327
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Thu Jul 18, 2019 8:27 am |
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trofazz
MMT Pro Member
Joined: Thu Jun 07, 2018 4:14 pm Posts: 97 Location: Lyons, Michigan
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Re: Roller rockers vs factory?
Less friction equals more hp but at a steep cost. Still hard to comprehend $500 for four f'n roller rockers when you can get 16 full roller rockers for a small block for $160... Mfg are making bank on these B&S engines....
_________________ 1854 Timber Creek, 37efi HD
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Tue Aug 13, 2019 11:24 pm |
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MaXXis85
MMT Elite Member
Joined: Wed Jan 14, 2009 7:23 am Posts: 6233 Location: Tarkington, TX
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Re: Roller rockers vs factory?
_________________ Bayou Surface Drive 337-351-0362 Tarkington, TX 77327
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Wed Aug 14, 2019 6:16 am |
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cb5331
MMT Super Elite Member
Joined: Fri Dec 18, 2009 8:10 pm Posts: 16915 Location: Rowlett, TX
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Re: Roller rockers vs factory?
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Wed Aug 14, 2019 9:07 am |
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trofazz
MMT Pro Member
Joined: Thu Jun 07, 2018 4:14 pm Posts: 97 Location: Lyons, Michigan
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Re: Roller rockers vs factory?
[/quote] There is more to the rollers than less friction.[/quote] Yep, I get it. More area under the base, valves closing faster, larger full fulcrum arc allowing a larger cam, etc.. I was just mentioning one of the main benefits of having them,even in stock applications. I just wish they were a bit cheaper...
_________________ 1854 Timber Creek, 37efi HD
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Sat Aug 17, 2019 2:45 pm |
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2WIDGN
MMT Member
Joined: Mon Aug 29, 2016 12:39 am Posts: 24
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Re: Roller rockers vs factory?
Thanks for the replies. Haven't pulled the trigger yet but I'm seriously considering it.
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Mon Aug 19, 2019 2:05 am |
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trofazz
MMT Pro Member
Joined: Thu Jun 07, 2018 4:14 pm Posts: 97 Location: Lyons, Michigan
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Re: Roller rockers vs factory?
_________________ 1854 Timber Creek, 37efi HD
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Mon Aug 19, 2019 7:19 am |
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2WIDGN
MMT Member
Joined: Mon Aug 29, 2016 12:39 am Posts: 24
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Re: Roller rockers vs factory?
I watched that video about ten times before I attempted it. It's more difficult to hold onto the stock rocker while snugging everything up.
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Sat Aug 24, 2019 5:03 pm |
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bluesky2012
MMT F.E.
Joined: Mon Jul 14, 2014 8:19 am Posts: 981
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Re: Roller rockers vs factory?
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Sat Aug 24, 2019 8:13 pm |
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boatguy
MMT Pro Member
Joined: Mon Dec 05, 2016 11:59 am Posts: 219 Location: Panhandle of Florida
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Re: Roller rockers vs factory?
DELETE
_________________ Lead, Follow or Get The Hell Out Of The Way!!!! 1754 Gator Trax Hybrid, Hunt Deck ,with MB 4400 Black Death HDR, Duck Slaying, Mud Slingin Machine!!!
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Sun Sep 29, 2019 12:25 pm |
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