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I work in a machine shop and we balance cranks. The two major takeaways is drill no more than 1/2", and make sure the unbalances are 180* apart. I haven't seen swiss cheese like your example come to our shop, but pretty butchered.

Whose engine blogck are you using ? Is anyone running Fords new Pro Stock engine in Pro Mod ?

You can also be consistently wrong using any Bob weight Spacers....Just as your connecting Rods will be precisely Centered laterally across the crank pin Journal, your selected Spacer should precisely Center the Bob weights consistently during Setup & different cranks need different width Spacer tools .

Learn the job first, get faster after.

Excellent, explanation. My mind has been eased.

What a great man to share his years of knowledge with us.

OLÁ Analysis 08/08/24 Meu Inglês atual não me permite acompanhar a parte audível mas como ex da Metal Leve, Johnson Bronze , Federal Mogul acompanhei visualmente o vídeo. O que me chamou a atenção é de nas primeiras peças mostradas é visível o defeito de fabricação através de riscos no sentido do corte efetuado pela brochadeira em provável mau estado. Nas demais peças mostradas, bronzinas, eixo, alojamento, alguns poucos dos defeitos mostrados não vi em mais de 3.000 motores que por mim foram assistidos e analisados. Uma nova geração de defeitos está a caminho devido a mudanças provocadas por alterações no sistema de lubrificação onde as diversas alterações subsequentes efetuadas pelos projetistas indicam que "dias piores virão" . ABRAÇOS...Roberto Udo Krapf (analista de motores a combustão e detonação interna e freios)

Love this conversation

Sorry to hear about Lizy's passing Pat! 😪🤤

awesome as always. I love IR systems after going to duel webber on my ac vw stuff from stock size motors up they increase everything with no down side once you tune them to your combo witch isant hard if you have half a brain. I would of liked to try them on my old 340 with 2x830 hollys on a weiand ram.( witch was very hard to beat ) I miss that car.thats my 1 life regret selling it due to cancer 31 years ago.( thus the stint for 16 years in the vw stuff.) now I just drive my tuned solstice gxp(turbo) ( but still have 2332cc&2393 cc rollercam ac vw motors I need to finish& put togeather or sell off. keep up the great work guys!!

The guy who sat at Lee Shepherd's desk these years later is still thinking of new ideas and things to test. Darin, this is why you will be cutting edge all your days.

😎😎😎😎

Sprint cars baby

Is SRC there?

Nitrous molecules break down (from the heat) in the cylinder into nitrogen AND oxygen molecules. The extra oxygen that seperates out of the Nitrous molecules when it breaks down ALLOWS you to add extra fuel into the cylinder to what amount of air (oxygen) that was carried in there by the natural induction process going on by the engine itself. Once you add the extra fuel along with the nitrous, the engine will make extra power from the bigger fuel/air charge that is now in the cylinder. If you DON'T add any extra fuel along with the nitrous, the engine WILL go lean because of all the extra oxygen that is introduced into the cylinder when the nitrous breaks down into its individual nitrogen and oxygen molecules, you WILL burn parts down. We ALL know what happens with an acetylene torch when you hit the oxygen lever when the flame is applied to a piece of metal and it gets good and hot, well, that would be what happens inside the cylinder if all that extra oxygen was added, but no extra fuel was added along with it. The extra oxygen WILL find a fuel source, such as pistons, engine block, or head material, if enough fuel isn't present for all the oxygen in there. That's how parts end up torched and holes appear in pistons.

Surprised I didn't hear of offset boring the counter bore. Simple process. Just takes a little bit more time.

Goes to show pretty clearly that man can't use intuition anymore. Electronics have replaced the thinking man.

Why on earth is there a Higgins logo on the bottom of the page

Help me understand please. If I have an engine with a rocker arm ratio of 1.5 and a valve spring with an open pressure of 300lbs. Does this mean the pounds of pressure at the cam would be 450lbs since there is NO mechanical advantage when opening the valve?

Let the Main Man talk! In other words Shut your mouth!

22:00 model tags are wrong way around

how idenfied a warp cly block

I been porting since 1977 I started out with a Dumore grinder it weighed about 5lbs. I'm still going at it age 65 with modern equipment now although I did get rid of the SF-600 flow bench.

Darin You come highly recommend by David Vizard

Insanely interesting for the Hemi lover this vid.

Question- The subject is the 408 W build. When the solid roller was installed did you guys check the valve clearance? It had .669" lift with a 1.72 rocker. The pistons have a valve relief.

This is a video that doesn't suck and all useful information, (even if your never going to build race engines). Some of the things I've done for 40~50 years as an 'engine' machinist but others were new to me. Piston holding fixtures, I always cringe when I see 'professionals' just clamping pistons or liners any old vice or whatever. Nickel bronze valve guides, (C63000) specific for Titanium valves? I know titanium has a lot of issues as it's difficult to machine and likes to 'combine' with just about anything it touches.

Don't lighten the crank? I think he should have said be careful how and where you lighten crank. The one they are playing with has been lightened significantly compared to a stock crank. There are area's on bob-weights that can be lightened without causing loss of strength in torsion or flex. It's been known since 1940's that cross drilling crank-pins actually males crank stronger and less likely to crack. Overall, pretty worthless video as it didn't really have very much information and could have been a 'short'

In a word...!!!!AWESOME!!!! 🙂 Thanks guys, Ben

Zoom in on the display to help us better understand what you are speaking about. The camera is too far away.

Greatness

Great info.

used drug money to make it, he is a turd

I appreciate the detailed information that Lake and Jimmy provided about the preparation and installation of the Total Seal gas ported, gapless piston ring sets. In the follow up segment after this engine was subjected to some serious dyno test flogging, Lakes Motor Oil Geek analysis revealed some very interesting results. The used oil chromium content from ring wear never exceeded 1 ppm in all of the NA and forced induction tests. The Total Seal rings were the only component listed that didn’t have excessive wear. Of course using a quality oil of the proper viscosity is important. But extreme boost will quickly reveal a poorly assembled engine or inferior components. Well done Lake, Jimmy and Total Seal 🏁

Common sense goes a long ways. It’s just an air pump.

Thanks Jon

You may have "reduced" VE, but you increased trapping efficiency and reduced pumping loss (and less dilution). That smaller cam will be a much nicer driver too. Which rpm did you use to drive the new cam design? I don't recall who said it, but a hole in the torque curve isn't just a lack of power. It's a sign that the engine won't pull well. Water brakes don't show that at 300 rpm/s. Stock 2016 Stingrays accelerate at over 1000 rpm/s in first gear.

There's a typo in Darrin's CFM equation. It should read CID*RPM*0.0009875/CYL. An easier version is CID*RPM/(1013*CYL). It doesn't work with Gen V small block heads.

The old gm tuned port injection (TPI) efi manifold from the 80’s used resonant frequencies for force air in. Problems, too small runners limit top rpm’s potential, too big and you loose the resonance frequency to ram air in.

What a dam headache.

I need hours of that.

True , EFI suck s

Great video thanks. Buying kit!! Link please.

According to the N.H.R.A. rule book hollow stem valves are not legal, and the max overbore size is .080 not .060 minor mistake but non the less these are the current rules I would have to see 475 c.f.m. with my own eyes to believe this otherwise it is impressive if you're into flow bench numbers.

What kind of ignition system is it using?

We won Indy in 2003 and 2004 qualified #1 in 2000 at the time we were still using a cross-ram and 8,900 R.P.M.'s...we had the national record at 8.53 at 153+..I was co-engine builder with my dad and did the Cylinder heads from scratch I also designed the intake manifolds that we had Hogan's build I was maintaining 4 hemi super stock cars full time as I was also the head mechanic it was hectic at times also, doing the cast iron heads sucked and I did a lot of them.

I nominate the late Dennis Fischer

You guys need to lav mic your guests. The audio is horrid

Thank you for your knowledge and videos USA 🇺🇸 TRUMP 2024 2024

Thank you for your knowledge and videos USA 🇺🇸 TRUMP 2024 2024