Factory valves and springs will usually float just above 4200. aside from the fear of dropping a pushrod etc you are likely not going to spin it high enough to sling a rod. .... but sometimes shit happens
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| Max RPMs without a Rev Limiter http://mudmotortalk.com/mmt_v2/viewtopic.php?f=3&t=68869 |
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| Author: | mudder [ Mon Nov 07, 2016 2:36 pm ] |
| Post subject: | Max RPMs without a Rev Limiter |
Been wondering this lately, but what are the max RPM's without a Rev Limiter. Decked heads, exhaust I normally am between 4100 and 4200, but it jumped to over 4200 with a new prop. From what I have read here, seems like the limiter is needed for over 4350. Does that sound correct? Thanks |
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| Author: | Will C [ Mon Nov 07, 2016 2:48 pm ] |
| Post subject: | Re: Max RPMs without a Rev Limiter |
Are u cdi ? Shimmed springs? |
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| Author: | mudder [ Mon Nov 07, 2016 3:55 pm ] |
| Post subject: | Re: Max RPMs without a Rev Limiter |
non cdi, 2008,. since I dont understand the second part I would say no. LOL |
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| Author: | mudder [ Mon Nov 07, 2016 3:57 pm ] |
| Post subject: | Re: Max RPMs without a Rev Limiter |
I also have a habit to not run at WOT when running and if I do, I dont do it for very long, but I normally run between 4100 and 4200 previously if I was WOT |
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| Author: | Will C [ Mon Nov 07, 2016 5:16 pm ] |
| Post subject: | Re: Max RPMs without a Rev Limiter |
Factory valves and springs will usually float just above 4200. aside from the fear of dropping a pushrod etc you are likely not going to spin it high enough to sling a rod. .... but sometimes shit happens
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| Author: | dead animal [ Mon Nov 07, 2016 7:58 pm ] |
| Post subject: | Re: Max RPMs without a Rev Limiter |
nobody cuts grass at half throttle. run that biatch wfo. mine is old and I like to keep it under 4300 and run it like that all day. I put the high rev coils in last year or so and put the high rev valve springs. I spin it 4500+ in the mud when busting trail and don't think twice about it. when u hear the valves making noise, just back off a tad. lol |
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| Author: | mudder [ Tue Nov 08, 2016 9:14 am ] |
| Post subject: | Re: Max RPMs without a Rev Limiter |
Thanks guys, just a general question I have been wondering about. I just finally ordered the K & N filter instead of the Briggs. Will plan on the easy mod to the carb shield I have also read about here. Easy project for Spring since our season is almost over. Without some northern winds, though, this season will continue to suck. 
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| Author: | mudder [ Tue Nov 29, 2016 12:08 pm ] |
| Post subject: | Re: Max RPMs without a Rev Limiter |
So I figured out why my RPM's jumped by almost 100 RPMs. I forgot I just added the K & N air filter.
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| Author: | Will [ Tue Nov 29, 2016 12:55 pm ] |
| Post subject: | Re: Max RPMs without a Rev Limiter |
My first truck was a 4cylinder, 5 speed with no tach on the dash, I'd let it pull until I heard the valves float and then shift gears, finally got use to the sound and would shift right before they floated, put almost 200K miles on it. haha |
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| Author: | mudder [ Tue Nov 29, 2016 3:35 pm ] |
| Post subject: | Re: Max RPMs without a Rev Limiter |
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