Love the up close looks at the parts of these amazing engines!!! Those ports have to be massive with the amount of fuel that has to make its way to the cylinder!!
Love those heads. Flow restriction elimination is key. Currently building a Dart 427W Frankenstein. BBC rods, LS pistons, SBC rod journals, Cleveland mains. 3/8 circle dirt. Needs to hold up. We'll see. Swallowed a valve on a 383 at 7500. Cylinder disintegrated.
@@murphystreeter Exactly, moving air is always the issue. Its easy to add fuel. Top fuel guys have their own weather stations and will change jets between rounds based on the density of the air because since they can only move so much of it, when its denser there are more molecules so they can put in more fuel..
Not repairable? Looks like an easy fix to me and have repaired much worse. I must ask why? Does the welded chamber not hold up to the temperature and cylinder pressure? Thanks for the great work
Suggestion , I think all teams should tell what frames the use . What motors they not specifics but who manufactured them originally . I think it would be interesting ..
Why are the injector lines crossed over, is it to keep everything tightly packaged? Thanks for the great behind the scenes videos, love seeing this stuff.
Hey man, what’s Mike doing at the starting lane , just after the burn out, he is playing with screw or …. On the left side of the blower Like your show. Cheers
Do yous have 2 sets of heads with nearly identical cc volume ready for each race day or do you service the same head and put it back on the car if there's no damage for the next round?
Top fuel newbie question, is it the NHRA rules that cam design have to be used vs. pneumatic system. Has that been tried if yes is there advantage to pneumatic valve system vs. cams in drag racing?
From a long-standing observer: I’m just about certain that NHRA would be thumbs down on the pneumatic valve closure idea. There’s still a camshaft with pneumatic operation a la Formula One and Moto GP. The camless , or freevalve actuation is used by Koenigsegg
why try to rebuild the motor in the car in between rounds? Why not just swap it out every round so you could have more time to rebuild and let parts cool down better.
I'd like to see you try to fit in a bigger intake valve, Notching the sleeve for valve clearance is pretty extreme......Not really any more room there to steal.
For alcohol engine would be possible. Top Fuel...much higher cylinder pressure...... welds are very iften softer then base naterial. Maybe causes issues with seats sinking in head or gasket blow out as clamping / bite of the welded part is a bit lower....
Love the up close looks at the parts of these amazing engines!!! Those ports have to be massive with the amount of fuel that has to make its way to the cylinder!!
Love those heads. Flow restriction elimination is key. Currently building a Dart 427W Frankenstein. BBC rods, LS pistons, SBC rod journals, Cleveland mains. 3/8 circle dirt. Needs to hold up. We'll see. Swallowed a valve on a 383 at 7500. Cylinder disintegrated.
Nothing to do with flow it's fuel volume😉
If you restrict airflow you can't increase fuel volume.
@@murphystreeter Exactly, moving air is always the issue. Its easy to add fuel. Top fuel guys have their own weather stations and will change jets between rounds based on the density of the air because since they can only move so much of it, when its denser there are more molecules so they can put in more fuel..
Great insight and info of what it takes to keep one of these amazing cars going.
Not repairable? Looks like an easy fix to me and have repaired much worse. I must ask why? Does the welded chamber not hold up to the temperature and cylinder pressure? Thanks for the great work
Just found your site. I subscribed to clays a week ago yours came up today. Thanks
Suggestion , I think all teams should tell what frames the use . What motors they not specifics but who manufactured them originally . I think it would be interesting ..
It's on the entry list for the class. Make and year.
Why are the injector lines crossed over, is it to keep everything tightly packaged? Thanks for the great behind the scenes videos, love seeing this stuff.
Exactly what I came here to find out. Damn, no answers.
@@michaelslee4336 @angry hornet answered my question in vid #13 👍🏼
@@cfukumori808
I’ll look. Thanks.
Likely for vibration strengthening ,cross is stronger than parallel .
Those ports are huge!!!!!
Huge because they're run at wide open throttle.
Now I'm watching the proper video to ask this question. If you open both valves at the same time. How far off seat are they when they hit.
Do you index spark plugs?
In a normal season, how many races do you hit? You may have already answered this in a prior video, what is the bore and stroke of that engine?
Thanks.
Nitros favorite food - METAL
Hey man, what’s Mike doing at the starting lane , just after the burn out, he is playing with screw or …. On the left side of the blower
Like your show. Cheers
Final fuel adjustment.
Air bleed for idle.
Wow.. it pretty much junked that head!!
How is fuel injection controlled? I didn't see an y electrical connections, is there some kind of mechanism that opens based on valve position?
Mechanical fuel injection only, per rules.
Barrel valve, fuel pump and jets (orifice pills)
Constantly flowing fuel intake valve gets a bath basically
Do yous have 2 sets of heads with nearly identical cc volume ready for each race day or do you service the same head and put it back on the car if there's no damage for the next round?
Excellent video!!!!!! Keep up the good work!!!!!!!!
Top fuel newbie question, is it the NHRA rules that cam design have to be used vs. pneumatic system. Has that been tried if yes is there advantage to pneumatic valve system vs. cams in drag racing?
From a long-standing observer:
I’m just about certain that NHRA would be thumbs down on the pneumatic valve closure idea. There’s still a camshaft with pneumatic operation a la Formula One and Moto GP.
The camless , or freevalve actuation is used by Koenigsegg
@@oldschoolmotorsickle Yep, F1 is where I got the idea,eliminates valve float but maybe the 1/4 mile is not long enough run to worry about it.
@@eatcommies1375 ANY distance is long enough to worry about valve float...
@@eatcommies1375 Drag engines for sure float the valves. Sometimes positive pressure from turbo/supercharging can open valves as well.
The real question is when will F1 run nitro..?
why try to rebuild the motor in the car in between rounds? Why not just swap it out every round so you could have more time to rebuild and let parts cool down better.
I'd like to see you try to fit in a bigger intake valve, Notching the sleeve for valve clearance is pretty extreme......Not really any more room there to steal.
Hang on. Only 2 valves per cylinder?
When they are that big its all you need. Lol
Great video, thanks for sharing.
MBE repairs damaged cylinder heads, look just like new when he's done.
If they would allow 100%Nitro the parts suppliers would do real well.
Amen on the 100%.You ever hear a 90s AFD on 100%,badder than a top fueler at least warming up in the pits.
That is a good point.
continious injection ?
Yes
I dont get how these guys can afford to do this. Got to be lots of $$ in the sponsor packages.
They are all free masons.
Cocaine sales.
WOW!🚗🚗🚗
Anyone else notice the carbon tracked plugs?
That has to be able to be fixed
Good luck this weekend.
That head can easily be fixed. I’ve fixed worse.
For alcohol engine would be possible.
Top Fuel...much higher cylinder pressure...... welds are very iften softer then base naterial. Maybe causes issues with seats sinking in head or gasket blow out as clamping / bite of the welded part is a bit lower....