SuzukiSavage.com - What is a safe redline?

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What is a safe redline?
03/16/22 at 07:18:47

I've got a Savage with (supposedly) with big bore higher compression piston, ported head, hotter cam, roundslide carb. I say supposedly as I haven't torn into it but it runs considerably better than the wifes stocker. I'm putting this engine from this modded Savage into a butchered Cafe bike I'm building. What is a safe redline for these bikes? I've not taken it over 6K as I really don't know what the bottom end will take. I don't really know what you can rev these to safely.

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TheSneeze Serious Thumper Offline Posts: 1201 Northern Nevada Gender:	Re: What is a safe redline? Reply #1 - 03/16/22 at 07:39:26 I am not sure what the redline is for the Savage, but the valve train is usually the limiting factor when it comes to RPM.
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verslagen1 YaBB Moderator ModSquad Offline Where there's a will, I want to be in it. Posts: 28755 L.A. California Gender:	Re: What is a safe redline? Reply #2 - 03/16/22 at 08:53:19 6500 rpm is mfg spec, and it will do more w/out blowing up. According to the gearing commander, 97 mph is max speed in stock form. SO, unless you are winding it out in 1st gear...
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LANCER Serious Thumper Alliance Member Offline Savage Beast Performance Parts Posts: 10596 Oklahoma Gender:	Re: What is a safe redline? Reply #3 - 03/16/22 at 10:46:38 Some engines have hit 8000 rpm momentarily without ill effect. That is not recommended however.
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stinkywheels

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Re: What is a safe redline?
Reply #4 - 03/16/22 at 10:51:26

Thank you that is helpful. I'm not new to bikes, just Savages. I need to jet it and would like to know what it'll do, or not do. It's a chain drive and can mess with sprockets again if need be. I've got quite a few.verslagen1 wrote on 03/16/22 at 08:53:19:

6500 rpm is mfg spec, and it will do more w/out blowing up.
According to the gearing commander, 97 mph is max speed in stock form.
SO, unless you are winding it out in 1st gear... Smiley

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Gary_in_NJ Serious Thumper Offline LS650 Cafe Racer Posts: 2625 Amongst the Twisty Roads	Re: What is a safe redline? Reply #5 - 03/16/22 at 10:52:53 With all of the mods on your engine, the redline is all but meaningless. I would suggest that you put the bike on a dyno and do a few pulls, noting what rpm the power peaks, and then drops by 5-7%. Assuming that the valve springs can handle your lift and duration, that's your redline.
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stinkywheels YaBB Newbies Offline SuzukiSavage.com Rocks! Posts: 7	Re: What is a safe redline? Reply #6 - 03/16/22 at 10:54:20 I doubt it'll see that on purpose, buuut things do happen. Thanks. If I ever get in the engine I'll see if it's got some of your parts in it.LANCER wrote on 03/16/22 at 10:46:38: Some engines have hit 8000 rpm momentarily without ill effect. That is not recommended however.
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stinkywheels

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Re: What is a safe redline?
Reply #7 - 03/16/22 at 11:02:51

It's probably only ever gonna see a butt dyno. I've already thrown more money in the toilet on this bike than I should. I'm just going to have more fun on it, be kinda nice to it. I might put a Keihin flatslide on it and see if it likes an accelerator pump of not. I've got lots of faster bikes, I just wanna play with something simple without taking all the fun out of it. Gary_in_NJ wrote on 03/16/22 at 10:52:53:

With all of the mods on your engine, the redline is all but meaningless. I would suggest that you put the bike on a dyno and do a few pulls, noting what rpm the power peaks, and then drops by 5-7%. Assuming that the valve springs can handle your lift and duration, that's your redline.

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stinkywheels YaBB Newbies Offline SuzukiSavage.com Rocks! Posts: 7	Re: What is a safe redline? Reply #8 - 03/16/22 at 11:04:05 With a 94mm stroke I thought piston speed might come into play.TheSneeze wrote on 03/16/22 at 07:39:26: I am not sure what the redline is for the Savage, but the valve train is usually the limiting factor when it comes to RPM.
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Dave

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Re: What is a safe redline?
Reply #9 - 03/16/22 at 11:04:54

Even in a modified engine - there is not a lot of reason to spend too much time up around 6,000 rpm. The strong point of the big single is the torque and the ability to pull strongly in the mid range rpm. On my engine I hold the throttle open and when I feel the pull from the engine starting to weaken - I shift to the next gear. I believe that is up around the 6,000 - 6,500 rpm area......but I seldom look at the tach while I ride that way.

I was on a forum with a lot of younger folks....and it had some older experienced guys as well. One of the Noobs was saying how he always takes the engine to the redline before shifting to the next gear. One of the older guys told him that the redline on the tachometer is like the local bar - you can go there occasionally and likely be alright.....but if you hang out there all the time you will likely get into trouble!

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LANCER Serious Thumper Alliance Member Offline Savage Beast Performance Parts Posts: 10596 Oklahoma Gender:	Re: What is a safe redline? Reply #10 - 03/16/22 at 12:33:26 In the upper rpm’s he engine uses some oil.
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Ruttly Serious Thumper Offline Thumpers Rule Posts: 4997 Manteca , CA Gender:	Re: What is a safe redline? Reply #11 - 03/16/22 at 13:24:18 When my butt gets numb from high rpm buzz , time to back off a bit Don’t even think about farting ! I don’t look at the speedo why would I have a tach.
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ohiomoto Serious Thumper Offline SuzukiSavage.com Rocks! Posts: 2681 WTF is JOG?	Re: What is a safe redline? Reply #12 - 03/16/22 at 19:59:24 Jesus, just crappity smacking shift when it feels right.
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Ruttly Serious Thumper Offline Thumpers Rule Posts: 4997 Manteca , CA Gender:	Re: What is a safe redline? Reply #13 - 03/16/22 at 20:34:34 Ride it like you stole it , not like you own it , it’s more fun !
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TheSneeze Serious Thumper Offline Posts: 1201 Northern Nevada Gender:	Re: What is a safe redline? Reply #14 - 03/16/22 at 21:36:11 ohiomoto wrote on 03/16/22 at 19:59:24: Jesus, just crappity smacking shift when it feels right. I'll cosign this one...
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