11+k RPM LS motor vid - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

frankwjr · 04-17-2018, 09:03 AM

Thought I would post/share what I found over on engine labs website..https://www.facebook.com/EFI101/vide...04285441/?t=59

have to admit the sound reminds me of a pro-stock motor...simply awesome.

peace

JerTM · 04-17-2018, 11:11 AM

Was the machine spinning the engine at that rpm?

frankwjr · 04-17-2018, 02:59 PM

Quote:

Originally Posted by JerTM

Was the machine spinning the engine at that rpm?

yup..Spintron...here is an explanation...http://www.dragzine.com/tech-stories...ain-evolution/

peace..

Scotty D · 04-17-2018, 04:10 PM

Ok ok .. But hears my question what’s that prove ??? It’s not in a combustion scenario ! So I’m lost !!

frankwjr · 04-17-2018, 08:15 PM

lol...this allows developers a way to test valve train components before having to fire an engine up for the first time...

*SSE 4 2SS* · 04-17-2018, 09:45 PM

I have video to almost 9,000 rpm with combustion but the turbo's drown out the exhaust note. This is due to my full exhaust system....

I had numerous people at the last Mile event I ran at come up to me after and state they had never heard an LS that sounded like mine.... The response was that they had probably never heard an LS at 9,000 RPM....

I have a dyno pull to 8,300 or so, and we spun the tires on the dyno killing the pull.... It is awe inspiring.... Ask the Snap On guy trying to make a sale.... We told him to help us stand on the straps and made a pull.... trying to stop the tire spin... When the pull was done, he got off the straps with shaky knees and walked out of the shop (No comments, no looks).... We didn't see him until the following week...

acammer · 04-18-2018, 08:14 AM

Quote:

Originally Posted by Scotty D

Ok ok .. But hears my question what’s that prove ??? It’s not in a combustion scenario ! So I’m lost !!

If you go back and watch the entire video, they walk through the valve motion. They even have graphing of the cam profile vs. actual valve motion at a few cross sections of RPM. You can see that at 11,300 their valvetrain is still following the cam pretty well. At 11,500 the valve is starting to loft off the top of the lobe (inertia is pulling it further than the cam will carry it) which causes some nasty instability which continues to worsen as the revs climb - that extra inertia is overwhelming the spring, so your opening is out of control, and then your closing will also be out of control as the valve is closing much harder and faster, bouncing off the seat, etc. Watch the video from 3:50 on and you'll get a real nice education on valvetrain stability. The fact that it's occurring at 11k+ rpm is amazing!

frankwjr · 04-18-2018, 08:49 AM

Quote:

Originally Posted by acammer

If you go back and watch the entire video, they walk through the valve motion. They even have graphing of the cam profile vs. actual valve motion at a few cross sections of RPM. You can see that at 11,300 their valvetrain is still following the cam pretty well. At 11,500 the valve is starting to loft off the top of the lobe (inertia is pulling it further than the cam will carry it) which causes some nasty instability which continues to worsen as the revs climb - that extra inertia is overwhelming the spring, so your opening is out of control, and then your closing will also be out of control as the valve is closing much harder and faster, bouncing off the seat, etc. Watch the video from 3:50 on and you'll get a real nice education on valvetrain stability. The fact that it's occurring at 11k+ rpm is amazing!

He gets it! lol...tho I shudder at the cost it took to get there...peace

SSBUSDRVR · 04-20-2018, 11:07 PM

A Buddy's WR 1/2 NA LSx 9300 rpm. 197.4 mph.
http://www.1320video.com/worlds-fastest-motor-corvette/

StreetRage320 · 04-21-2018, 07:24 AM

Wow, a LS7 @ 11,500 RPM! Would like to see that dyno..I would like to see the calculations and the velocity the valve train is moving at when approaching speeds like that. Cheers to GM for the strength of the LS engine.

Frank, since you are stalking LS7 engines on Facebook is it safe to assume there will be an LS7 swap in your future

frankwjr · 04-21-2018, 08:26 AM

Quote:

Originally Posted by StreetRage320

Wow, a LS7 @ 11,500 RPM! Would like to see that dyno..I would like to see the calculations and the velocity the valve train is moving at when approaching speeds like that. Cheers to GM for the strength of the LS engine.

Frank, since you are stalking LS7 engines on Facebook is it safe to assume there will be an LS7 swap in your future

naaa...the LS3 platform is more than enough for me...tho the idea of hearin my baby screamin in ecstasy at 9500 rpm would be BAD ASS! lol

peace

*SSE 4 2SS* · 04-22-2018, 01:14 PM

Quote:

Originally Posted by frankwjr

naaa...the LS3 platform is more than enough for me...tho the idea of hearin my baby screamin in ecstasy at 9500 rpm would be BAD ASS! lol

peace

Hell Yeah..... I would've to hear one at 9,500 rpm.... I imagine it would sound like a WWII dive bomber in full tilt....

2010reddevil · 04-22-2018, 10:36 PM

That's is pretty cool, lots of forces at play. But it won't ever spin that fast under load. Too much reciprocating weight. Hell, sport bike engines like Ninja 650 etc spin about that fast and they are much lighter and stronger than that. What's really crazy is the sound my ZX6R makes at full tilt. 16k rpm and feels/sounds like a F1 car haha. 8k comes along and secondary injectors come online....... Holy sh*t! Haha

04-17-2018, 09:03 AM	#1
frankwjr Drives: 2010 SS 2SS M6 Join Date: Aug 2016 Location: Smithsburg, Md. Posts: 2,446	11+k RPM LS motor vid Thought I would post/share what I found over on engine labs website..https://www.facebook.com/EFI101/vide...04285441/?t=59 have to admit the sound reminds me of a pro-stock motor...simply awesome. peace __________________ 2010 SS 2SS M6 - Tune by RDP dynoSteve!(Woot) - Daily Driver - *150K!* - All work by me...

04-17-2018, 08:15 PM	#5
frankwjr Drives: 2010 SS 2SS M6 Join Date: Aug 2016 Location: Smithsburg, Md. Posts: 2,446	lol...this allows developers a way to test valve train components before having to fire an engine up for the first time... __________________ 2010 SS 2SS M6 - Tune by RDP dynoSteve!(Woot) - Daily Driver - *150K!* - All work by me...

04-17-2018, 09:45 PM	#6
SSE 4 2SS Boosted Moderator Drives: Bone Stock LS3 Join Date: Sep 2009 Location: Marion Tx Posts: 15,476	I have video to almost 9,000 rpm with combustion but the turbo's drown out the exhaust note. This is due to my full exhaust system.... I had numerous people at the last Mile event I ran at come up to me after and state they had never heard an LS that sounded like mine.... The response was that they had probably never heard an LS at 9,000 RPM.... I have a dyno pull to 8,300 or so, and we spun the tires on the dyno killing the pull.... It is awe inspiring.... Ask the Snap On guy trying to make a sale.... We told him to help us stand on the straps and made a pull.... trying to stop the tire spin... When the pull was done, he got off the straps with shaky knees and walked out of the shop (No comments, no looks).... We didn't see him until the following week... __________________ If the car feels like it is on rails, you are probably driving too slow. -Ross Bentley Horsepower is how fast you hit the wall. Torque is how far you take the wall with you. “If everything seems under control, you're just not going fast enough.” Mario Andretti If you can turn, you ain't going fast enough...

04-20-2018, 11:07 PM	#9
SSBUSDRVR Drives: '11 2SS/RS IBM/BLK M6 Join Date: Mar 2011 Location: Central FL Posts: 3,748 View My Garage	A Buddy's WR 1/2 NA LSx 9300 rpm. 197.4 mph. http://www.1320video.com/worlds-fastest-motor-corvette/ __________________ '11 IBM 2SS/RS Built and Tuned by Vengeance Racing Vengeance PCM Vengeance Racing Mast Black Label LS7 Headed 416 ProCharger Stage II D1X Race ,Monster Triple,Alky Control Meth Inj, Forgestar F14 Drag Version and a bunch of other blah blah blah.838/688 at 12lbs Street Friendly

04-21-2018, 07:24 AM	#10
StreetRage320 Those who need me got me Drives: 2022 ZL1 A10 Join Date: Aug 2017 Location: Southwest, MN Posts: 624	Wow, a LS7 @ 11,500 RPM! Would like to see that dyno..I would like to see the calculations and the velocity the valve train is moving at when approaching speeds like that. Cheers to GM for the strength of the LS engine. Frank, since you are stalking LS7 engines on Facebook is it safe to assume there will be an LS7 swap in your future __________________

04-17-2018, 11:11 AM	#2
JerTM Drives: 2011 2SS/RS M6 Join Date: Oct 2015 Location: Utah Posts: 1,941	Was the machine spinning the engine at that rpm?

04-17-2018, 04:10 PM	#4
Scotty D Drives: 2014 1le 1SS CRMT Join Date: Apr 2014 Location: Boston mass Posts: 1,178	Ok ok .. But hears my question what’s that prove ??? It’s not in a combustion scenario ! So I’m lost !!

04-22-2018, 10:36 PM	#13
2010reddevil Drives: 2010 Camaro 2SS Victory Red 6M Join Date: Apr 2015 Location: Gulf Coast, TX Posts: 1,424	That's is pretty cool, lots of forces at play. But it won't ever spin that fast under load. Too much reciprocating weight. Hell, sport bike engines like Ninja 650 etc spin about that fast and they are much lighter and stronger than that. What's really crazy is the sound my ZX6R makes at full tilt. 16k rpm and feels/sounds like a F1 car haha. 8k comes along and secondary injectors come online....... Holy sh*t! Haha __________________ 2011 2SS 6A Red Jewel Metallic, Vararam Tune CAI, Magnaflow 3" Competition c/b, Speed Engineering 1-7/8 LT's, Circle D 5C, M/T 275/40R20 S/S, HPTuners tune by Ryan@GPI 12.3 @ 112 ACM as of 12/22/19 Gone on 12/28/19 R I P 2010 2SS 6M Victory Red/Black (old ride) CAI intake, Speed Engineering 1 7/8" LT's, X4 base tune, Flowmaster Outlaw axle-back. 12.6 @ 115 SAR as of 9/19/15 Gone but never forgotten.