Head porting

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NorwayCuda69

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hey guys.

i bought the EQ-magnum heads from ebay.. mmmm but they need alot of worke. lets make a tred on porting /how to, ive done some j-heads in my time but this will be the first magnums. please come with some bright ideas and best of all, do anyone provide port guides/templates for these heads. mmmm also there valve guides and seals are bit tall.. and the spring seats dont have room for dubble springs.. i need some new tools cus of the thinner valves my old cuters wont worke..

have anyone done these heads before??

IMG_0010.jpg


IMG_0017.jpg


IMG_0012.jpg


IMG_0011.jpg
 
oh yea, and btw.. look at the original valve job at the intake.. dont think u should ever mount these heads right from the box
 
Hi,

are these the 2.02 Intake valve version from cch? I thougt about byuing these for my engine as a future upgrade. If so can you please tell me how much the shipping was to you?

Could be a very interesting thread for me...........:read2:

Michael
 
360duster said:
Hi,

are these the 2.02 Intake valve version from cch? I thougt about byuing these for my engine as a future upgrade. If so can you please tell me how much the shipping was to you?

Could be a very interesting thread for me...........:read2:

Michael
Click to expand...

Hey mate, sorry for late reply!

the heads i got for 750$ on ebay.

the freight was 309$

yes these are the stainless walves that came in the heads..
 
Hey,

Now we are on the run with the heads here, we have built a Flow bench and calibrated it up to a Superflow with copyed plates (300 and 500 cfm) the std heads came out with not to good numbers, air port speed was far to high over 400 fps in the runner floor. we have now ported out the intake roof a bit, and opened up the bowl, the valveguides are shortened and made over.. i wil now post pictures and flow data in this tred as we go ahead :) tips and hints on the way are always welcome :):)

eq.JPG
 
the numbers u see over is after the porting i described. We didnt get the airspeed down, still just over 400fps. the flownumbers are up ca 20 cfm on the higher lifts, but the flow began to turn at .550 . we found that the port Areal had to be just over 2"^2 , will might help on the higher lifts, and airspeed if i open even more.. pls come with a comment,
 
NorwayCuda69 said:
Hey,

Now we are on the run with the heads here, we have built a Flow bench and calibrated it up to a Superflow with copyed plates (300 and 500 cfm) the std heads came out with not to good numbers, air port speed was far to high over 400 fps in the runner floor. we have now ported out the intake roof a bit, and opened up the bowl, the valveguides are shortened and made over.. i wil now post pictures and flow data in this tred as we go ahead :) tips and hints on the way are always welcome :):)
Click to expand...

You are flowing to 1 inch??? I'm sure you are not...........but then numbers just don't make sense to me

EDIT duhh mm's sorry a little slow today :)
 
NorwayCuda69 said:
the numbers u see over is after the porting i described. We didnt get the airspeed down, still just over 400fps. the flownumbers are up ca 20 cfm on the higher lifts, but the flow began to turn at .550 . we found that the port Areal had to be just over 2"^2 , will might help on the higher lifts, and airspeed if i open even more.. pls come with a comment,
Click to expand...

I have no experience with the EQ heads, only thing i can relate then to is the 340/360......so what i suggest may not work or may even be counterproductive.

I too have a (small) flow bench that has been calibrated.

I guess you are using a pilot probe in the intake to know that the air speed is high!

Are you at "400" fps, or, is it way over 400 fps (430-450)and is it one little point in the ssr or is the 400+ across the hole ssr(Short Side Radius)

As Brian has suggested, on another thread, install the manifold and see what happens.
With the intake manifold bolted on, the "High" speed my not be there.(aka not issue.)

I wouldn't worry about it falling off at .550' lift unless your plan's is a 600+lift cam..........Then you might be better off with a different head.

Looking down through the valve bowl area, does it have a small lip on each side of the ssr were it turns into the runner? If so rounding that MIGHT help slow the ssr speed down a little.............................
 
Cudafever said:
You are flowing to 1 inch??? I'm sure you are not...........but then numbers just don't make sense to me

EDIT duhh mm's sorry a little slow today :)
Click to expand...

The flow numbers are @ 28"

the first numbers are mm lift, sec numbers are inches.. ill send the next flow data in just "American numbers"
 
Cudafever said:
I have no experience with the EQ heads, only thing i can relate then to is the 340/360......so what i suggest may not work or may even be counterproductive.

I too have a (small) flow bench that has been calibrated.

I guess you are using a pilot probe in the intake to know that the air speed is high!

Are you at "400" fps, or, is it way over 400 fps (430-450)and is it one little point in the ssr or is the 400+ across the hole ssr(Short Side Radius)

As Brian has suggested, on another thread, install the manifold and see what happens.
With the intake manifold bolted on, the "High" speed my not be there.(aka not issue.)

I wouldn't worry about it falling off at .550' lift unless your plan's is a 600+lift cam..........Then you might be better off with a different head.

Looking down through the valve bowl area, does it have a small lip on each side of the ssr were it turns into the runner? If so rounding that MIGHT help slow the ssr speed down a little.............................
Click to expand...

there is 410 - 415 all along the short side radius, tiny increse when the pilot is close to the bowl..

The camshaft is: http://www.hughesengines.com/Index/...ZW5naW5lcw==&level1=Q2Ftc2hhZnQ=&partid=21859 (1.6 rockers)

so i will try to push it up to .600 if i could, but since its a stroker i might not want to aim for more than 5000 rpm

the fps measure is made by a pilot.. (measures the Differencial press against the static)

there was a lip down there, but its remowed before the flownumbers abowe.

tnx for comment.
 
earthmover said:
you build a flow bench?????:read2:
Click to expand...

Yes, we built a bench.. i can post some pictures of it :) we bought the plans, it runns with 6 vacum cleaner engines.. 3 with triac controle and 1 original 300 cfm calibrated plate.. it runs @ 28" vacum and has an electronic DP-cell that is connected to the pc.. i can send u the information u need and where to buy the parts if ur interested.. :)
 
there is 410 - 415 all along the short side radius, tiny increase when the pilot is close to the bowl..
Click to expand...

The flow ## will be lower with the intake on..........I bet it will pull past 550-600" lift before the flow stalls.

Test it to prove it.......but it most likely will be fine!
 
Cudafever said:
The flow ## will be lower with the intake on..........I bet it will pull past 550-600" lift before the flow stalls.

Test it to prove it.......but it most likely will be fine!
Click to expand...

I will try that tomoro :) tnx for the tip, im pretty newbee in the game of porting, so the exp limits to reading the theory.. not always that easy to practice :) while i have u on the line.. what inntake would u sugest to use on the engine 410 cui, the cam mentioned before, (proform 750 vacu / quick fuel 830 mec)

the intake options i have:

Edelbrock performer
Edelbrock performer RPM
Weiand X-elerator single plane
MP - M1 (old model)
Holley, street dominator single plane

And ofc a rusty old std 360 2 barrel :)
 
Quite a coincidence here. I'm just now building a 408 using the same heads and cam. I got started working on the heads last week then the block came back and I need to get it assembled so it doesn't rust so I side tracked the head work. Will get back on it late next week. I don't have much to add for the process as I've never done any of these either. Just X and J heads. But the basics are the same for all heads. As mentioned the port speed generally runs high in these heads I'm told by a few reputable head porters. But with the intake on it slows. The high port speed is most likely why the flow drops off at high lifts. It's probably going turbulent. But again maybe the intake will slow it enough to remedy that. Let us know how they flow with the intake on. BTW: I'm wondering if the M1 single plane intake might be a better choice since it's not quite as high velocity as a dual plane?? Just thinking. I have a Torker2 and a Air-gap and I plan on testing both on mine to see how the numbers look.
 
Hi!
did take some photos of the bench we have! the design is mainly form Bruce @ PTS! we did not buy his plans, but build it after my own writings,based on pictures of Bruces bench! I did buy the electronics and a calibrated plate from him! next bench we build will be after his drawings! You will find everything you need on www.tractorsport.com. There is a great forum there also with many experts!

here are some pics...if this is working...first time..
album.php
 
woha! I found the attach-button! maybe this is better...or maybe i`m posting twice...sorry for that!
Well,this is the flowbench!

S7301786.jpg


S7301787.jpg


S7301788.jpg


S7301789.jpg
 
Norway-dart said:
woha! I found the attach-button! maybe this is better...or maybe i`m posting twice...sorry for that!
Well,this is the flowbench!
Click to expand...

Tomoro its weekend :) we can get back to the heads. ill bring 1 of the M1 inntake and the X-elerator. we try get flow numbers and port air speeds with the inntakes, before we continue the porting?.. ill bring the port tools to :) Yes, and i got my hands on an aluminium plate and some rubber for the bench top.. ill bring the superflow plate aswell.

we will try to post numbers along the way with several combinations, and as we move forth with the port job.

jo
 
Nice looking bench. I saw those write ups on tractorsport a couple months back. I also saw a very simple bench that used a mass air flow sensor from a early 90's Ford V8 as the sensor for air flow. It was extremely simple but yet proved pretty darn accurate but only good to about 300 cfm.
 
Norway-dart said:
Hi!
did take some photos of the bench we have! the design is mainly form Bruce @ PTS! we did not buy his plans, but build it after my own writings,based on pictures of Bruces bench! I did buy the electronics and a calibrated plate from him! next bench we build will be after his drawings! You will find everything you need on www.tractorsport.com. There is a great forum there also with many experts!

here are some pics...if this is working...first time..
album.php
Click to expand...



LOL Yeah I bought the PTS plans, then tried to shrink them so i could make it out of three old desks i had colecting dust!

caused my self a hole lot of greaf trying to get it to calibrate correctly

Had to pull it a part several time to fix turbulance issues with in the bench.

The next one I will build as Bruce intended!!!!!!!!!!!!

You know the old saying,........"Hind Sight is 20/20!"

Here is mine.

DSCN1720.jpg
 
LOL....did not look exactly like bruce's bench....but looking good!Function before fashion..The best thing is even it's not accurate or compareble to others flownumbers/benches, you are able to see a difference if you do things right or wrong! and a velocity-probe is a easy add-on when using water-manometer! Just throw some paint on it now, and some stickers, then it suddenly looks like the pro's!

my bench draw about 23A, 6motors. (not enough,more to come)
I have used the speedcontrol of the vacuum-cleaners and modifyed it to handle the increased current.You see the wheel on the front of the bench. 2 wheels, each control 3 motors.
 
Norway-dart said:
LOL....did not look exactly like bruce's bench....but looking good!Function before fashion..The best thing is even it's not accurate or compareble to others flownumbers/benches, you are able to see a difference if you do things right or wrong! and a velocity-probe is a easy add-on when using water-manometer! Just throw some paint on it now, and some stickers, then it suddenly looks like the pro's!

my bench draw about 23A, 6motors. (not enough,more to come)
I have used the speedcontrol of the vacuum-cleaners and modifyed it to handle the increased current.You see the wheel on the front of the bench. 2 wheels, each control 3 motors.
Click to expand...

I only have 4 motors in mine 2 new from Light House, LH High power units and to out of a old vac clean you see at a car wash.
After .300" lift i have to test a 10" and then do the math @28"

BUT IT WORK! and have learned a lot already:read2:.....and still know nothing.:-D
 
exactly! the more I read and study,the less I understand....
The great thing is that porting stuff is'nt so "secret" any more! alot of experts giving advices! like darin morgan, larry@maxrace, etc... some experts here in sweden having a nice forum where they discuss everything... Internet is great for what its worth!

I have to drop testpressure as I pass roughly 220cfm@28...
well...cant be here when the garage is calling!

se ya
 
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