PRH
Well-Known Member
That’s how it was rectified here.
Like I said, the Cranes had plenty of clearance..... as did the Comps.
Speedmaster Small block porting tips and results Part 1
- Thread starter pittsburghracer
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That’s how it was rectified here.
Like I said, the Cranes had plenty of clearance..... as did the Comps.
gzig5
Well-Known Member
right. not arguing that.
PRH
Well-Known Member
It def looks more like an answer to.......
“People are asking about cnc’d chambers....... can you do anything about that........ cheap”?
skrews
Well-Known Member
MOPAROFFICIAL
Oogliboogli
It's mostly lighting why it looks so ugly and that high spot does look like it needs to be removed but at the same time if you remove it would you create an issue of intake going straight out the exhaust.
It's either very crude programming or there's there is some thought/testing behind that.
Exactly!
skrews
Well-Known Member
They took an already way too flat chamber shape and made it even flatter.
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skrews
Well-Known Member
This is a Trick Flow head. It has a good modern chamber. Something every Eddy head and Eddy head clone lacks.
Well again as we all know, there is that cost thing with the TF’s but to cleanup the plug hole, do maybe a little bit of unshrouding if desired, and/or just polish the chamber would be an easy task. Be a nicer looking chamber than the cnc IMO
PRH
Well-Known Member
I agree...... but how it looks isn’t really the issue.
The TF chamber has the proper contours around the seats....... you just can’t get there with the RPM style head.
PRH
Well-Known Member
It doesn’t “look” like it does.
“If” one wanted to improve the chamber in the area around the seats...... you’d start by sinking the valves...... quite a bit.
Enough to where to retain the normal tip heights, you’d use slightly shorter valves.
That put’s the valve seats well below the chamber roof and gives you some material to improve(well, create actually) some contours around the seats.
Unfortunately, doing all that to the std cnc heads would push the cost up past the TF heads....... and you’d still end up with heads that weren’t as nice as they are.
I don’t try and make this style of head into something it’s not.
Some people who can do the work themselves get good results from fairly extensive rework to this style of head.
But...... if you’re paying someone to do it for you...... there’s a more cost effective option.
“If” one wanted to improve the chamber in the area around the seats...... you’d start by sinking the valves...... quite a bit.
Enough to where to retain the normal tip heights, you’d use slightly shorter valves.
That put’s the valve seats well below the chamber roof and gives you some material to improve(well, create actually) some contours around the seats.
Unfortunately, doing all that to the std cnc heads would push the cost up past the TF heads....... and you’d still end up with heads that weren’t as nice as they are.
I don’t try and make this style of head into something it’s not.
Some people who can do the work themselves get good results from fairly extensive rework to this style of head.
But...... if you’re paying someone to do it for you...... there’s a more cost effective option.
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skrews
Well-Known Member
^^^ This
yellow rose
Overnight Sensation
MOPAROFFICIAL
Oogliboogli
Its an optical, thats the seats overlap.
You're seeing the aluminum around the seats.
Its not a TF chamber, but i have a hunch its better than it looks in that pic.
Polish it out and youll see it raised and peaked similarly.
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These are a worth head for the price everyone got them for.
And PBR will show how to squeeze more out of them.
But if your going to by them now.......Trick Flow is NOT That much more.
With that said, I'm enjoying this porting thread a lot.
And PBR will show how to squeeze more out of them.
But if your going to by them now.......Trick Flow is NOT That much more.
With that said, I'm enjoying this porting thread a lot.
yellow rose
Overnight Sensation
Doesn't matter. When the seats are close like that it's almost impossible to keep any materiel in there once the head sees some heat.
You always see materiel missing from that area.
MOPAROFFICIAL
Oogliboogli
Impossible is accurate.
MOPAROFFICIAL
Oogliboogli
That looks worse. Thats exactly what those fkd up 308s look like. Sharp peaks on each side. Sunk, but not enough? Lol
Knock the 2 mountain edges down.
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Agree, I’m glad I changed course though, still would like to try my hand at some of what PBR is doing one day (tubing and such) for now this wuss is enjoying this thread
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