HOW DOES A SPINTRON WORK? WHAT CAN WE TEST? HOW DOES A SPINTRON HELP MAKE BETTER CAMS & VALVETRAIN?
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- Опубліковано 14 сер 2023
- GEN 3 HEMI SPINTRON TESTING! DO I NEED TO CHANGE MY STOCK PUSHRODS WHEN UPGRADING TO A CAM? CAN I RUN STOCK PUSHRODS? HEMI PUSHROD TEST. WHAT CAN YOU TEST ON A SPINTRON? IS A SPINTRON THE SAME AS A DYNO? HOW DO YOU MEASURE DEFLECTION? HOW FAST CAN A SPINTRON RUN? HOW DO I KNOW IF MY CAM IS STABLE? WHY WON'T MY CAM RUN MORE RPM? WHAT IS VALVE LOFT, OR BOUNCE OR DEFLECTION? WHY DOES MY P-V CHANGE WHEN THE MOTOR IS RUNNING? CHECK OUT THIS VIDEO ON THE SPINTRON TESTING RUN BY BRIAN TOOLEY RACING ON THE GEN 3 HEMI PUSHRODS. DURING MY VISIT, THEY WERE RUNNING SOME QUICK TESTS SO I DECIDED TO FOLLOW ALONG TO DEMONSTRATE WHAT A SPINTRON DOES. CHECK IT OUT.
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Great, now i want a spintron for the garage
I want one for my living room. My dirtbike is hogging up the laundry room :)
And a dyno next to it.
This is brilliant, you can listen to all the awesome noises and not pass out from the fumes. I just need to wire it to start at 5am each morning
We will all be over to borrow it, just like when you got a truck.
@@jhutch1470 Just like neighbor Ron's weed wacker
Steve Morris had an engine that he did not build that was breaking rocker arms when he removed the cam the part number revealed it had almost identical specks as his smx engines but the ramp rates were totally different and Steve's cams do not have issues so its not all in the numbers on the cam and that machine would prove it. Good stuff👍
Nice old school oscilloscopes 👍
Spintron 2004 with Windows XP on a an IBM Thinkpad. Those were the dayz!
Run those Ram Air Cams, actually they are pretty mild for warranties, longer ramps than they need so no noise with any wear, etc? Pontiac has long pushrods
I didn't know about the spintron. I know people had measured those things, but not that easily and consistently. Thanks for sharing it Richard.
Cool to see different content
This reminds me of Randy Dorton and his innovative approach to making racing engines more durable. Damn he was a genius.
Some have a knack...and they work hard..
I love valvetrain harmonics. Chrysler had such potential for a high-winding engine in the hemi but I think cost-constraints stopped them from developing the valvetrain enough
Very cool. turbo magnum! turbo magnum! turbo magnum!
I, still love your channel, Richard!
Real interesting stuff!
oh hell yeah this is going to be a good one
love it...thanks
David Vizard level of Intel. Thank you Richard Holdener. ✔️💯🏁🏁🏁
love the PA
Right on
would have been fun to put those stanke rocker shaft stabilization thingies on the hemi with a big cam and springs to see if it actually does anything besides look nice when you have the valve covers off...
Harmonics from the power stroke wouldn't effect the pushrod deflection? I know he touched on harmonics from other valvetrain components but I would think that shock wave through the crank might transfer through to the pushrod, too.
Richard- a flux capacitor is a real thing. It is a electronic device on an airplane that measures magnetic north for the attitude indicator.
A Spintron! Is such cool name!!!
I want one in my bathroom… 😎🎶🎵
My reference was Doc from BTTF
@@richardholdener1727 - Yes, I know. I got it. 😎🎶🎵
Imagine my surprise when they mentioned them in Flying class at ground school.
I thought it was a made up word for the movie.
Blown away with data here Richard, tyvm sir. ✔️💯🏁🏁🏁
That's how you could test the Rhodes lifters you have been talking about in the live feeds. Checking the lift and stability at RPM and oil pressures.
I totally forgot about Rhodes lifters. I want to try them out in something for a future project. Heard great things
The low speed readings would really be interesting
@@hondatech5000 They would be for sure. I've heard alot about Rhodes. It would show the magic in action
Agreed!! My son just bought a set to try. I used them years ago and would like to see more data. Hard to find much of anything about them
Cool tool. Seems to me tho if you are looking at subtleties like .015 pushrod deflection, you should be testing the motor hot by heating with 200 degree water circulating and /or heat exchanger heating oil, so that the various temp effects are in the model of the test. IMO
no=deflection isn't caused by heat
@@richardholdener1727 its not the cause, but it absolutely influences the susceptibility of parts experiencing stress. Its just best practices to make the test model conditions as close to real world as possible. AND, its a reasonably simple add to the test cell relative to the expense already endured. I wonder how much that spintron cell cost to do, any idea??
that O-scope, while still perfectly adequate for the task, is the trailing edge of technology.
passive aggressive comments are the trailing edge of communications
wow. no negativity was intended. i believe your content is the best on the Internet. clearly you don't want feedback from me in particular. on any subject. i will not post any further comments, and simply, and quietly, enjoy your brilliant analysis. sorry to irritate.
@@richardholdener1727 i meant no negativity, and did say that the oscope was perfectly adequate for the job. they are at least 15-20 up years old.
perhaps i am too sensitive or didn't see the humor. i have commented on your videos before, and your responses to my entries have been at best, contrarian. i watch EVERY video you put out. i go all the way back to the silver state days with you, read your articles in various magazines.
not going to stop watching, and enjoying everything you do.
but no longer commenting
Considering that they are dealing with essentially audio frequencies, you don't need some 250MHz DSO.
It also looks like they are using it for realtime monitoring which may actually be better with a traditional CRT.
You won't have the lag that you'd have with a (typically) 60Hz LCD monitor.
The only thing that I'd be worried about with those scopes is some caps going bad from age.
You need one of those Richard
You want to know how to REALLY check the flow of an engine? Put it on a Spintron and then see how much air it pumps at various RPM.
Yet, nobody does this. It is SO easy to set up. Also, very easy to see the effects of longer header tubes and different intakes on airflow volume at any given RPM.
Does not require tuning, balancing air/fuel ratios or anything that consumes so much time. Just set the engine on the Spintron and measure the airflow.
I know hot exhaust does not exactly mimic cold air, but a Spintron can tell you with only the airflow volume, where the VE peak is.
If our society was a lot like whatever got wiped out in the Mud Flood, we would have an absolutely exhaustive list of already-proven cam timing research with a variety of parameters.
But, it is not. So, in order to profit, everyone keeps the knowledge secret. (Except Richard, as usual.)
A spintron will not show the actual airflow-it shows no pulse wave power tuning that changes the output and airflow
@@richardholdener1727 However, it will be vastly more accurate than a flow bench in reflecting near-real-world conditions.
Can you do more gen 4 hemi stuff please, specifically exaust manifolds & the Holley hi ram
INTAKE TEST COMING
Absence of heat ?? Not opening the exhaust valve against the pressure of combustion still present in the cylinder BTDC ?? Cool toy though.
you are not looking at combustion pressure with this tool-nor do you with a timing light, use the tool as intended
Our man has a point. Honda fought crankshaft dynamics destabilizing valve control through a gear drive in world superbike. the amount they spent to beat ducati with the rc45 could finance a moon landing.
Wouldn’t combustion pressure have a huge affect on pushrod deflection ?
think of apparently rigid metal structures like a guitar string. apply an input of the appropriate frequency for an appropriate amount of time. the component can be made to vibrate or ring in a way that might compromise its ability to perform along a desired path. beehive valve springs have a variable rate and shape that naturally resist ringing/floating/surging due to their inconsistent shape that will only misbehave locally and momentarily. a portion may misbehave but be damped by a nearby section that has not reached its compromised rpm/load/speed/vibration point. dual and triple valve springs are not about pressure but about frequencies that harm valve control. flat wound spring dampers and interference fitting multiple valve springs stop vibes through friction. effective but inefficient. everything flexes. understanding when and how is where power is made. more spintron!
I wonder how much heat becomes a factor on a pushrod. As it grows from heat and metal becomes Heat saturated. Will it flex more.
heat saturated?
@@richardholdener1727 yes, we lash our valves at a specific clearance when the engine is cold and we use different clearances when the engine is up to operating temperature because of expansion when everything is gets hot. So my question is the spintron is testing for deflection on a relatively cold engine. Will if find different results on a hot engine. Will the pushrods flex more , will the valve springs relax , will the valve be more susceptible to bouncing when the engine is hot. I would suspect these spintron tests aren’t cheap and it would be disappointing if results change on a hot engine. I guess I should have wrote it out better. Sorry about that.
you need to realize that lashing your valves hot or cold on a solid set up at different amounts-ends up being the same when running-these can be controlled. Now ask yourself what 99% of the market is interested in...hyd roller with no lash.
And I still pound in bearings with a hammer and an old hubcap.
Spintrons are so cool. Id run it for free.
can you spin it until it explodes?
So how does that laser measure length? Is there a hole cut in the side of the motor?
yes
No sh!t. Very cool.
the engine is a sacrificial Spintron only motor
So this is ran with no plugs and it's just the valve train that is being evaluated?
yes
Which, Gen III Hemi is this? 5.7, 6.2, 6.4?
5.7l
@@richardholdener1727 awesome thanks. More hemi stuff would be cool. Love the channel
1
you do not measure a ball type pushrod to the end if it has the end cut off, You measure to where a round ball would be or where the center of the ball is, depending on what you are doing
That’s correct but as long as you measure both and don’t just go by what’s printed is the point. when you measure them measure them the same way on both.
measure both the same-you see the difference
i would first like to say i think your video's on youtube are great, informative, and very helpful to the car community, i watched one of your builds on the early third gen hemi that originated as a truck motor. I was wondering when you swapped on the magnum RT manifold on to the truck motor if you need to modify anything for it to fit, like injector placement or if the A/C bracket was in the way. I want to put a magnum 5.7 intake manifold on to my truck and if i would need to modify anything to make it work. Thank you for your time.
@richardholdener1727
The Magnum intake manifold requires a different front cover (accessory positioning)
All this testing and still no understanding of lobe separation?
they understand and have forgotten more than you will ever know
amen brother.
Jobs where you struggle to stay awake at work. Kudos to him
WHO?