David Vizard, Uncle Tony's garage, Unity motorsport. Mission impossible Dodge 302 Head porting

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It's never far from my mind. LOL
Every time I go down to the machine shop, I have a look around at the late model stuff, looking at what I could use in the conversion. :)
Ever since I saw this pic, it's been in the back of my mind.

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Cudafever said:
never finished it.
Got one intake port to to 285 cfm and a 170 cc port. could not duplicate it in any other port. still have 2 intake ports that have not been done.
someday i will pull them back out and dust them off...........hoping i have learned enough about this stuff to see what was different about that port.
I made templates out of solider and Z-spar, of that port, to copy to the matching ports. but never got the same resorts. was the only port with epoxy in it that would flow to 0.600 lift with out crashing.
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I dug it out sever times, and re did it with epoxy and with a little clean up it would come back, but never on any other port.
I truly believe its in the valve job and combustion chamber. but haven't looked back on them heads in years.
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What size valve? I would put money on it not being the chamber. I would put my money on the issue being from the middle of the short turn to the vary edge of your valve job. Including from side to side.
 
pittsburghracer said:
What size valve? I would put money on it not being the chamber. I would put my money on the issue being from the middle of the short turn to the vary edge of your valve job. Including from side to side.
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That port is a 2.02 but i have ports from 1.88,192 and 2.00. They were all 1.88 stock tulip valves. 192, and 200 and 2.02 are nail heads (2.02s cut down)
It vary well could be, as i had no clue about off set of Bowl and cyl wall side.
 
Hysteric said:
Totally agree. One day when I get around to it I'm gonna take the 587's I have and machine the chambers right down till I get a a nice big fat quench area and fill that horrible divot in the floor till I get the same cfm but with a much smaller port volume and stick it on a 318 and see how it performs.
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Why not just use a piston with a quench pad?
 
I want the smallest chamber I can get with a dished piston to mirror the head.
 
Mean416 said:
Yikes that's a fuggin lotta work in an iron head. How'd it turn out?
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As i said above, i never finish it
Hysteric said:
Was that posted on the PTS flowbench forum? Looks as though its still has that dip in the floor which is what I would fill in all the way to the SSR.
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Yup spent years on them when i knew 0 about any of it.
And now waiting, on a chip? for my digital manomitor so i can us the bench i built sever year ago. I got around to calibrating it this summer and found the DM was not accurate as the temp changed.

As far as feeling in the floor all the way up to the SSR that was what i did in the first place but air speeds were always to fast at the SSR. It was like that dead air speed on the floor tossed some of the air up into the roof were the air speed were dead also and when you made the floor flat, all the air compressed to the ssr.
Maybe if i would have cut all the way to the valve cover surface then i could have raised it at the floor, at the opening. but the air speed were just to fast at the push PRP also when you raised the floor up to SSR level. I don't know, but what i do know is that i used 5 pound of Zspar feeling and then cutting out and changing all kinds of shapes in the port trying.
if you read that thread then you know all the time i have skrewwed with this head.
 
Cudafever said:
It was like that dead air speed on the floor tossed some of the air up into the roof were the air speed were dead also and when you made the floor flat, all the air compressed to the ssr.
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Now imagine what the fuel on the floor is doing as it hits the ski jump before SSR. The more fuel that coalesces on the port floor the worse it would get I would imagine.

Yep I read that thread. I remembered that you needed to mode the chamber to get the final numbers higher. Remembering that head I think Qwkmopardan's heads had the same work in the chamber.
 
I avoided the combustion chamber for the longest time because there was no going back from a mistake in the combustion chamber.
After i found the water jacket several times in this head and realized these head were never going back on anything. That is when i started to put a grinder above the bottom cut of the seat. a nice swooping affect in the combustion chamber was the ticket. but didn't react the same on the other ports.
all this talk about them heads, makes me want to pull them back out, and take a good look at them again. But then i will want to put them back on my bench and Drive my self insane again with them. but my flow bench need to get fixed first and 10 million other things in my life
I think PBR is right that its in the bowl because i was dead set on having a nice swooping bowl, so much so that i started to make a S shape from bowl up to the throat and seat out. which is kinda OK on PRP wall, but is a total disaster on the common wall of the port. and as i keep typing i keep thing about more thing that i know i was barking up the wrong tree.........Says my mind from the future, to one from the past...........:)
:poke::popcorn: Popcorn yummy....SQUIRREL!!!!,..................
 
Cudafever said:
That port is a 2.02 but i have ports from 1.88,192 and 2.00. They were all 1.88 stock tulip valves. 192, and 200 and 2.02 are nail heads (2.02s cut down)
It vary well could be, as i had no clue about off set of Bowl and cyl wall side.
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So that was your post about porting a Mopar head on Bruce’s flowbench site. That was fun following that. If I remember right you hit water over on the sides of the shortside. That was a 110% effort and it does deserve what you have learned to be applied.
 
hey Cudafever, what was the issue with the DM ? Was it bad batch of programmed chips? Oh has this been an issue for a while with the DM's?
 
I tried, I really tried to make it through that. When exhaust manifolds were mentioned I had to hit the goodbye button.
 
Bakerlite said:
hey Cudafever, what was the issue with the DM ? Was it bad batch of programmed chips? Oh has this been an issue for a while with the DM's?
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I still have my original and the only issue I had was when I upgraded my laptop and Bruce walked me through setting it up. I actually bought an automatic depression control for him but it’s still in the box.
 
Rat Bastid said:
The **** show of mission creep, half baked ideas and general idiocy continues and now Charlie is paying the price.

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**** show, half baked, idiocy...
That's it, keep throwing the shade if it makes you feel better.

How about we see how you like it? I guess I now have one reason to look at your Tuberering. :)
If only this one time.

The **** show of Can kicking, half baked ideas and general idiocy continues and now Tim is paying the price.

 
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Bakerlite said:
**** show, half baked, idiocy...
That's it, keep throwing the shade if it makes you feel better.

How about we see how you like it? I guess I now have one reason to look at your Tuberering.

The **** show of Can kicking, half baked ideas and general idiocy continues and now Tim is paying the price.

Click to expand...



Yeah, but it’s up and running and will blow the doors off that abortion that UT shoved up DV arse.

Next up, dyno videos, how to’s on how to build high compression pump gas engines and who knows, maybe I’ll do some on why you should run solid rollers on hydraulic lobes.

What can you do with your license??
 
Rat Bastid said:
Yeah, but it’s up and running and will blow the doors off that abortion that UT shoved up DV arse.

Next up, dyno videos, how to’s on how to build high compression pump gas engines and who knows, maybe I’ll do some on why you should run solid rollers on hydraulic lobes.

What can you do with your license??
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Now, now, can kicker, I'm making you famous.
Also, building something that goes better than the MI 318 is easy. But doing it with the parts that they are actually using, may not . :)
 
pittsburghracer said:
Ok who’s this and who is he referring to
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This is the guy who is porting JUNK 302 castings for the “mission impossible” project and the guy getting screwed at every turn.

Ive watched all of his videos on this abortion. In this video he says he has 24 hours (thats TWENTY FOUR HOURS) in one casting.

And then DV says he wants to go to 5/16 stem valves!!! WTF? On a neutered, choked 318 you want to spend money on THAT? On a good day it may make power to 5k. Maybe.

This poor dude is getting cornholed. The goal posts move all the time.

Oh yeah, they want to start out with…wait for it…exhaust manifolds!!!

It has now become a sad event. I didn’t like it from the jump because they are doing **** that any guy who has been building engines for more than a couple of years KNOWS using junk heads as a starting point, then spending HOURS on stock connecting rods, and grinding the counter weights to shape them for an RPM limited engine.

Just INSANE.

I feel bad for Servedio. He needs to cut his losses and stop spending his time (money) and resources (money) for zero benefit to him.
 
Bakerlite said:
Now, now, can kicker, I'm making you famous.
Also, building something that goes better than the MI 318 is easy. But doing it with the parts that they are actually using, may not . :)
Click to expand...


Do you know what’s in that engine? Of course you don’t.

Running your mouth like a sewer is what you do best.
 
Rat Bastid said:
Yeah, but it’s up and running and will blow the doors off that abortion that UT shoved up DV arse.

Next up, dyno videos, how to’s on how to build high compression pump gas engines and who knows, maybe I’ll do some on why you should run solid rollers on hydraulic lobes.

What can you do with your license??
Click to expand...
You need a hobby
 
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