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| Roller rockers vs factory? https://www.mudmotortalk.com/mmt_v2/viewtopic.php?f=3&t=73998 |
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| Author: | 2WIDGN [ Wed Jul 17, 2019 5:26 am ] |
| Post subject: | 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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| Author: | MaXXis85 [ Wed Jul 17, 2019 6:54 am ] |
| Post subject: | 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. |
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| Author: | 2WIDGN [ Wed Jul 17, 2019 10:00 pm ] |
| Post subject: | Re: Roller rockers vs factory? |
So, not something I can just swap out? I have to adjust the timing also? |
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| Author: | MaXXis85 [ Thu Jul 18, 2019 8:27 am ] |
| Post subject: | 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) |
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| Author: | trofazz [ Tue Aug 13, 2019 11:24 pm ] |
| Post subject: | 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.... |
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| Author: | MaXXis85 [ Wed Aug 14, 2019 6:16 am ] |
| Post subject: | Re: Roller rockers vs factory? |
| Author: | cb5331 [ Wed Aug 14, 2019 9:07 am ] |
| Post subject: | Re: Roller rockers vs factory? |
| Author: | trofazz [ Sat Aug 17, 2019 2:45 pm ] |
| Post subject: | 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... |
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| Author: | 2WIDGN [ Mon Aug 19, 2019 2:05 am ] |
| Post subject: | 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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| Author: | trofazz [ Mon Aug 19, 2019 7:19 am ] |
| Post subject: | Re: Roller rockers vs factory? |
| Author: | 2WIDGN [ Sat Aug 24, 2019 5:03 pm ] |
| Post subject: | 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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| Author: | bluesky2012 [ Sat Aug 24, 2019 8:13 pm ] |
| Post subject: | Re: Roller rockers vs factory? |
| Author: | boatguy [ Sun Sep 29, 2019 12:25 pm ] |
| Post subject: | Re: Roller rockers vs factory? |
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