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View Full Version : Late Model Blower Porting Pics



Super Duper Cou
05-16-2011, 07:31 PM
I had my older brother port my late model blower and inlet plenum with his die grinder. Let me know what you think.

http://i51.tinypic.com/fyoa35.jpg

http://i53.tinypic.com/330tlxv.jpg

http://i51.tinypic.com/2z5oj7s.jpg

http://i55.tinypic.com/dw2kqp.jpg

http://i56.tinypic.com/vwso6p.jpg

http://i56.tinypic.com/33eshzo.jpg

http://i52.tinypic.com/287m6xd.jpg

http://i51.tinypic.com/oh8thx.jpg

Regul8r
05-17-2011, 08:24 AM
I thought it was said we should smooth out the square corners in the lower corners of the blower case to let the air flow?

Others will chime in, the rest looks good from here.

Did he do anything to the top/outlet area?
Was this all done with the rotors still in the case? The shavings/dust will get in the bearings and very soon they will fail.

Super Duper Cou
05-17-2011, 10:57 AM
I thought it was said we should smooth out the square corners in the lower corners of the blower case to let the air flow?

Others will chime in, the rest looks good from here.

Did he do anything to the top/outlet area?
Was this all done with the rotors still in the case? The shavings/dust will get in the bearings and very soon they will fail.

He left the top/outlet of the blower alone. The rotors were not in the case when he ported it. He cleaned all the shavings out of the case before he put the rotors back in. I cleaned the shavings out of the inlet plenum yesterday after I took the pics.

the-big-e
05-17-2011, 11:08 AM
Looks good....:cool:

I would take a little more out of the TB side of the plenum.....

You want as smooth of a transition as you can get from one part to the next....

S_Mazza
05-17-2011, 11:41 AM
I think it looks good in general. However, it would have been good to see the inside of the blower case as well. (It would be nice if Ford and Eaton had given the air a straight shot like Magnum Powers did!)

It looks like there is enough meat for it to seal correctly, too ... which is good!

Super Duper Cou
05-19-2011, 01:23 PM
Looks good....:cool:

I would take a little more out of the TB side of the plenum.....

You want as smooth of a transition as you can get from one part to the next....

My brother port matched the tb side for my 75mm tb. It does have a hump in it because he's not sure if there is enough material left to grind out after the flange on the tb side.

Micahdogg
05-20-2011, 11:21 AM
To do an "S" port you need to remove those corners on the bottome left and right. Take them straight out, then blend it smoothly into the case so there is no edge.

On the outlet, you just bevel the leading edge all the way around and smooth out around the bolt bosses.

Here is an article that details how Magnuson performs an S port on that style blower:
http://www.sccoa.com/articles/blowerbuild.php

David Neibert
05-20-2011, 11:39 AM
My brother port matched the tb side for my 75mm tb. It does have a hump in it because he's not sure if there is enough material left to grind out after the flange on the tb side.

Yeah, there isn't much material to work with and I don't think you get anymore air flow from a 75mm TB than you do a 70mm, because at it's smallest point the plenum is only around 68mm. Replacing that part with an MP inlet should probably be the next mod you do.

David

Super Duper Cou
05-27-2011, 11:10 PM
To do an "S" port you need to remove those corners on the bottome left and right. Take them straight out, then blend it smoothly into the case so there is no edge.

On the outlet, you just bevel the leading edge all the way around and smooth out around the bolt bosses.

Here is an article that details how Magnuson performs an S port on that style blower:
http://www.sccoa.com/articles/blowerbuild.php

The corners circled in Blue or the corners circled in Red that need to be grinded down? Or both need to be grinder down?

http://i54.tinypic.com/104nsly.jpg

rbrown
05-28-2011, 12:12 AM
The corners circled in Blue or the corners circled in Red that need to be grinded down? Or both need to be grinder down?

http://i54.tinypic.com/104nsly.jpg


My question exactly. Great pic.

rbrown
05-28-2011, 12:30 AM
Here is an article that details how Magnuson performs an S port on that style blower:
http://www.sccoa.com/articles/blowerbuild.php

I do not ever remember reading this.

Those pics are too smal though.....

Regul8r
05-28-2011, 08:18 AM
Both of the circle points can/need to be cleared out.

Makes a smooth transition from the inlet to the blower blade area.

If you look straight in on the sides you will see how the opening is bigger than where it meets the back of the blades.
Making than straight and then smoothing the hard lip as it transitions into the blades will flow it smoother.

Micahdogg
05-31-2011, 10:21 AM
Regul8r got it. You just need to smooth all of that out so there are no corners and it blends into the case smoothly.

Super Duper Cou
06-01-2011, 12:37 AM
Alright thanks guys, I'll have him smooth out those corners.

rbrown
06-15-2011, 03:22 PM
Resurrection.

How did it come out?

Super Duper Cou
06-19-2011, 07:03 PM
Resurrection.

How did it come out?

I don't have any pics but my brother ported the edges out. The blower is on my car right now but my car runs like crap because i put 80lb injectors in and it has the stock tune. I put some E85 in to lean it out a little but it still runs way too rich and runs like crap. I have a moates quarter horse chip for it but i'm not sure if anyone around knows how to tune it. I might have to go with an SCT chip.