CAR SHOW HEADS PART 1

[@JRD_Motorsports]

It ABSOLUTELY makes a difference. Don't let them tell you otherwise. The plug base should ALWAYS sit flush with the inside of the chamber, for MANY reasons. Good on you Gerald. 👍

[@johnk3930]

Awesome

[@johnk3930]

Nice

[@johnk3930]

Sweet

[@johnk3930]

Got skills

[@damianokeefe]

Your The Man! 👍🏁

[@davidgough1161]

Very nice work, as usual!

[@johnk3930]

Kool

[@johnk3930]

Good looking set of heads

[@ModernDayTemplar606]

Top Quality Wisdom with top quality parts how can it get any better. Yes that plug being sunk in with exposed threads will definitely cause detonation and all kinds of tuning issues. I don’t even understand why AFR would even argue the fact. Thanks Mr Brand for another great video.

[@Timbo428CJ]

I'd have to agree with you on the plug shoulder being exposed. IMO you're gonna get a better free flowing mixture. Thanks for sharing Gerald. I'm sure the head company has their reasons like you said, but you've been working on things like this most of your life and you've built a lot of race engines over the years and your reasons and logic seem sound to me.

[@JRD_Motorsports]

@Timbo428CJ Not really a "Flow" issue. Hot spot for detonation, engine will require more timing than usual, and worst of all, major plug wetting.... or sooting. When the plug doesn't sit flush it creates a dead zone. With all the vortices surrounding the plug normally even in a properly designed chamber, it is glorified by leaving the base of the plug lower in the chamber. Fuel then tends to linger, de-atomize, and fall out of suspension, creating all sorts of tune issues.

[@BenjySparky]

Gerald, you rock! This engine is gonna be nice af. Your knowledge is amazing. Peace Thanks, Jackie, for the editing!

[@MartinMcMartin]

That's some good information, this stuff can be a little confusing.

[@PCgonerogue820]

Thank You Gerald for sharing this video. For the head manufacturer to change anything more people need to complain about it. Everybody has their own theory on things if it's right or wrong.

[@edsmachine93]

I think that the engraving process in your new Mill is trick, very nice. I really like Smith Bros. Products. I am going to have to start checking the spark plug position and protrusions now! Good Tech! Thanks for sharing Gerald. 🙏

[@BrandRacingEngines]

Thanks Ed ,🙏Smith bros make great products

[@dondotterer24]

That's crazy what the head manufacturer would do that with the spark plug holes. Almost like putting the old anti fowler adapters in a head. I'm guessing they don't make a correct longer reach plug? Thanks for the video. Nice engine!

[@kevinpalmer2975]

Wisdom only years of accumulated experience can provide. Thanks dude.

[@johnk3930]

Let’s go

[@derekcoor04]

I love Smith Bros stuff,I run their pushrods in my Harley Davidson builds

[@BrandRacingEngines]

They are good people

[@andygordon4479]

Got to be better! Good catch bud!

[@johnk3930]

Lots of respect for you young man

[@jeffreyworthington7558]

Thanks for the video and the knowledge.

[@Mr688895]

I know for a fact there is something to your spark plug theory. Two years ago I swapped a set of Vortec heads from a 96-2000 454 on to my 94 454 in place of the peanut port heads. I had an afr issue at idle that would range from 12.5 to 15 to 1 and the kpa reading from my map sensor was ranging as much as ten kpa. After verifying I had no vacuum leaks, the fuel pressure was steady, sensor was good, and the electronics were solid I was at a loss. I decided to stop by and pick up a new set of plugs and I got a set of 94 454 TBI spark plugs that are for heads with a 122 cc combustion chamber. I asked to see a set for the Vortec heads to see if there was any differences due to the 98 cc chamber and the Vortec plugs was 3/16” or so longer. Problem fixed. This engine had a stock TBI camshaft and cast iron heads. Anyways thanks for the video.

[@StephenKirker]

How did you work out the problem was on the inside of the head and not outside? It's minor, but you've changed the compression slightly by removing volume.

[@BrandRacingEngines]

Setting the head up to cut the plug hole on the out side would have been a major undertaking + not sure about water on that side

[@yattaran1484]

Very interesting engine work as always !. Just wondering why they've designed the plug hole like that ? 🤔

[@BrandRacingEngines]

I thank it was made to CNC ported

[@yattaran1484]

@@BrandRacingEngines Thank you for your kind reply ! 🙏

[@johnk3930]

Come on

[@tommyfryar6913]

Does anyone worry about indexing the plug any longer? Anything to be had with it? Thanks!

[@BrandRacingEngines]

You by 4 sets of plug, by a index washer mark the index washer and watch TV😀

[@tommyfryar6913]

@@BrandRacingEngines I like that idea. Then you'll know what plug goes in what hole. Thanks for the videos!

[@earnestbass1232]

Were the heads designed for a longer reach plug ?

[@BrandRacingEngines]

The choice of plugs are a .750 reach or a 708 reach. And a LT plug is .984 reach

[@hotcolors9455]

I would think that the plug being recessed would affect how the plugs read? I'm not sure which way though. It seems like the plug would appear colder/less timing than it actually is. Which is bad, very bad. I'm wondering if it's why I sometimes see a discrepancy between the wideband and the plug.

[@BrandRacingEngines]

Yes on the wideband. The plug will look lean and no timing