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Fast 90mm Intake ports?

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Old Jan 6, 2005 | 07:54 PM
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Default Fast 90mm Intake ports?

Has anyone notice the obstructions in the lower left corner of each intake port?

It is 1 inch triangle that stick out ¼” into the port?

Also, the TB opening 1 inch into the intake has a lip of 1/8 of an inch all the way around it.

Is there a reason for this or just a mistake in the molding?

Has anyone tried cleaning up the intake ports and the TB opening?

I would think that these areas could reduce flow numbers.

I would like to clean this up if need prior to installing.
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Old Jan 6, 2005 | 08:01 PM
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I port matched my runners and removed the hump. However, I did not mess with the TB opening.
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Old Jan 6, 2005 | 08:13 PM
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I am trying to post pictures
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Old Jan 6, 2005 | 08:38 PM
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Here is the intake port.
They all look the same.
Hope this shows up!
Attached Thumbnails Fast 90mm Intake ports?-intake-port-3.jpg  
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Old Jan 6, 2005 | 08:42 PM
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Here is the TB opening.
Attached Thumbnails Fast 90mm Intake ports?-tb-2.jpg  
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Old Jan 7, 2005 | 01:59 AM
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Beast96Z,
Do you have any before and after dyno number or track times?

One speed shop recommended to remove the ridge from the intake runner also.
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Old Jan 9, 2005 | 09:48 AM
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Has anyone removed the obstructions in the lower left corner of each intake port?
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Old Jan 9, 2005 | 11:48 AM
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Originally Posted by SlickVert
Here is the TB opening.
Silly question. Is that "obstruction" the end of one of the runners?
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Old Jan 9, 2005 | 12:20 PM
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No, that obstructions is in each runner and stick out 1/4" and stops 1 inch before the runner meet the head.
Look at the pictures I attached above.
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Old Jan 9, 2005 | 12:39 PM
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I would say deffinately get rid of the ridge in the throttle body opening if it won't cause you to go through the intake and I doubt it would. Hell if you do that is what they make epoxy for. As far as the other ridge I would say get rid of that to; however, it may be there for port bias reasons.
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Old Jan 9, 2005 | 01:04 PM
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Oh...that. I thought it was something bigger than that. Still, I doubt it is good for airflow.
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Old Jan 10, 2005 | 07:33 AM
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We take out the ridge in the port and also work the TB opening.There is also some other spot's in the intake that need some work.
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Old Jan 10, 2005 | 09:59 AM
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I've heard it's very good to port match these intakes before you run them. I just got mine done at FMS.
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Old Jan 10, 2005 | 12:14 PM
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Here is a pic of my port. My TB ring was left alone.

Last edited by LSUxBlake; Jan 10, 2005 at 12:34 PM.
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Old Jan 10, 2005 | 10:34 PM
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LSUxBlake
Thanks for the picture, now that is a good-looking port.

I disassemble my Fast 90 today and started porting it.
First I remove the obstruction at the outlet of the port just prior to the head and it looks just like the one LSUxBlake picture above.
Also, I notice another large obstruction inside the intake at the beginning of the port that I removed and blended in.
I know that this has to help out the flow number/HP alot!

Anyone else have any picture or recommendations on porting these FAST intakes?
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Old Jan 10, 2005 | 10:49 PM
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Originally Posted by LSUxBlake
Here is a pic of my port. My TB ring was left alone.
Mine looks the same as the bottom, but I noticed the upper part of yours is cleaned up and rounded pretty good to remove the ridge that goes right below the injector.
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Old Jan 10, 2005 | 11:03 PM
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I also notice the same thing about how nice the injector area was radius in.
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Old Jan 11, 2005 | 07:56 AM
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Attched you can see the TB opening of the top half of the intake.
Has anyone see any imorovement in blending this area?
Attached Thumbnails Fast 90mm Intake ports?-tb-opening.jpg  
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Old Jan 11, 2005 | 08:15 AM
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Attached is a picture of the beginning of the intake runner. there was a large obstructions (boss looking) at the upper right radus aera that I removed and blended.
Attached Thumbnails Fast 90mm Intake ports?-intake-radus-2.jpg  
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Old Jan 11, 2005 | 08:23 AM
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Attached is picture of the upper half beginning of the intake runner radius, notice the small ridge across the runner.
I can't think of any reason for that being there can you?
Attached Thumbnails Fast 90mm Intake ports?-start-runner.jpg  
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