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TwoToneThunder
10-25-2006, 08:47 PM
i know that magnum powers sells them
but i have the stock one off my old 89 sc
i was wondering if someone ported one of these before
im gonna give it a shot and see if it makes a difference

opinions?
CMac89
10-25-2006, 08:54 PM
It really isn't worth the time and effort. The bottle neck in those '89 plenums are the mid-section. It bottlenecks down to somewhere around 60mm. Anything you do before and after that won't matter.

You're better off to find a stock 94/95 blower.
fastsc92
10-25-2006, 09:55 PM
I know someone;) who went the extreme and did this

http://img.photobucket.com/albums/v325/fastsc92/inlet.bmp
http://img.photobucket.com/albums/v325/fastsc92/inlet4.bmp
http://img.photobucket.com/albums/v325/fastsc92/inlet5.bmp
http://img.photobucket.com/albums/v325/fastsc92/inlet6.bmp
http://img.photobucket.com/albums/v325/fastsc92/inlet7.bmp
TwoToneThunder
10-25-2006, 10:29 PM
i was thinking about cutting it open
im actully working on the return the other one that hooks up to the ic tube
seawalkersee
10-26-2006, 12:49 AM
Gee Jay...wonder who that somebody was. What was your gain from that?

Chris
fastsc92
10-26-2006, 01:07 PM
Only time will tell........:cool:
kenewagner
10-26-2006, 01:32 PM
Or it could look like this


Ken
XR7 Dave
10-26-2006, 02:20 PM
Or it could look like this


Ken

Not unless it were going on an M112..... ;)
kenewagner
10-26-2006, 02:30 PM
Not unless it were going on an M112..... ;)

sshhhhhh........
the-big-e
10-26-2006, 03:48 PM
I know someone;) who went the extreme and did this

http://img.photobucket.com/albums/v325/fastsc92/inlet.bmp
http://img.photobucket.com/albums/v325/fastsc92/inlet4.bmp
http://img.photobucket.com/albums/v325/fastsc92/inlet5.bmp
http://img.photobucket.com/albums/v325/fastsc92/inlet6.bmp
http://img.photobucket.com/albums/v325/fastsc92/inlet7.bmp

Being a machinist / welder, I gotta ask.....

It looks pretty good on th outside, but what about the inside?

Did you do any grinding / polishing of the welds from the inside, or does it even matter?
TwoToneThunder
10-26-2006, 03:50 PM
right now im going to cut the return plenum in half and try to grind out as much as possible then get it welded back together
the-big-e
10-26-2006, 04:18 PM
Sounds good to me......:D
mannysc
10-26-2006, 04:37 PM
on mine i cut it out weld in the fill panels from outside and get a good penetraition then grind the inside using a carbide bit i mounted on a 3.8 pushrod i mount this on a hand drill it works fast and i can get to all of the manifold ahh home made tools .

after i have it powder coated inside and out and its ready to flow.
David Neibert
10-26-2006, 05:21 PM
I know someone;) who went the extreme and did this



Nice job. Unless doing something like you did, there isn't much to be gained from porting the stock inlet plenum, especially the early model.

David
Dahoopd
10-26-2006, 05:23 PM
Manny,

What are you doing for vacuum on that inlet. I dont see any area for lines.
mannysc
10-26-2006, 05:29 PM
Manny,

What are you doing for vacuum on that inlet. I dont see any area for lines.

its not done i add em later also bypass is added later just a easy graft
fastsc92
10-26-2006, 06:10 PM
Being a machinist / welder, I gotta ask.....

It looks pretty good on th outside, but what about the inside?

Did you do any grinding / polishing of the welds from the inside, or does it even matter?
I made sure I did plenty of blending on the inside.;)
TwoToneThunder
10-26-2006, 08:35 PM
has anybody ported the return plenum?
or whatever the other ones called
Grims95SC
10-26-2006, 08:58 PM
I think Wynn and Manny have. Randy B. may have, I'm not sure. Dunno what the results were.
mannysc
10-26-2006, 09:34 PM
ive ported them but they really need to be enlarged like the one in my picture up above. in other post or here
Sweet90SC
10-26-2006, 10:57 PM
Sounds good to me......:D


Ok Eddie just let me know when you get started so you can do mine next..:D
TwoToneThunder
10-26-2006, 11:09 PM
hey manny can i get a pic of where u ported the plenum

howd u get inside?
seawalkersee
10-27-2006, 12:26 AM
He cut it apart and welded it back together. I own one of mannys masterpieces....and that IS what it is.

Chris
mannysc
10-27-2006, 12:29 AM
hey manny can i get a pic of where u ported the plenum

howd u get inside?

return plenum? i cut it in half added 3/4 inch welded it back together ground the welds from inside then added the 3.5 inch tube at bypass forward then ground the welds there it gives me more room to work on it in peices,

the inlet plenums i cut open weld grind then add the mounting flange. ive got the mounting flange to 3 inch ill take pic,s of insides tommorrow after i take my grand child to doctors . i have darkstars almost done ive been stuck doing some legal issues in court so im behind on his .

man what a month hope to have darkstars done and supercoupe007s done this weekend. also prick racing has a order for one of everything i make