TPI Tuned Port Injection discussion and questions. LB9 and L98 tech, porting, tuning, and bolt-on aftermarket products.
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Old Jul 9, 2005 | 11:31 PM
  #1  
Don 79 TA's Avatar
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Joined: Apr 2005
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From: Long Island NY
Car: Hers: 88 Formula 350
Engine: TPI
Transmission: Auto
Axle/Gears: 10 bolt Posi
Slp Cai

Got a Q about this kit for the 88 formula

installed it perfectly
but i used the elbows they sent in the kit
i noticed inside the elbows there were like metal baffles/deflectors

the original ones on her car did not have those metal baffles inside her tubes

does it matter?

seems like to helps to make it sturdier
and i was thinking it would help the air flow with them being inside there

thoughts?
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Old Jul 10, 2005 | 11:55 AM
  #2  
1989GTATransAm's Avatar
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From: Cypress, California
Car: 1989 GTA
Engine: 369 TPI
Transmission: 4L60E
Axle/Gears: 3.70 Nine Bolt
The baffles are supposed to help the airflow. It is an improvement over the factory system. I had one on my car for a number of years.

After examining the SLP product I decided I could build a better one with more flow and a bigger air filter than the stock one.
Attached Thumbnails Slp Cai-dcp_0878.jpg  
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Old Jul 10, 2005 | 11:57 AM
  #3  
1989GTATransAm's Avatar
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From: Cypress, California
Car: 1989 GTA
Engine: 369 TPI
Transmission: 4L60E
Axle/Gears: 3.70 Nine Bolt
Wrong picture above. See attached
Attached Thumbnails Slp Cai-dcp_0877.jpg  
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Old Jul 10, 2005 | 01:14 PM
  #4  
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From: San Diego
Car: 1994 Trans Am
Engine: LT1
Transmission: Auto
Axle/Gears: 3.23
2 questions 1989, what did you do about the return hose from the resevoir? With my cai, the weight has ripped the hose, so I was thinking of some metal or hard plastic elbow piece in place of the rubber hose, and then have the rubber hose go under the intake?

And did you custom make those runners? They look like WAAAAAy overkill on my 305, but they look sweet.
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Old Jul 10, 2005 | 03:09 PM
  #5  
1989GTATransAm's Avatar
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From: Cypress, California
Car: 1989 GTA
Engine: 369 TPI
Transmission: 4L60E
Axle/Gears: 3.70 Nine Bolt
Hi

Look carefully in the picture and you can see that I relocated the overflow hose on the radiator around the corner to the passenger side. Those runners are highly modified SLP runners. See attached picture.
Attached Thumbnails Slp Cai-allenrunner.jpg  
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Old Jul 10, 2005 | 07:46 PM
  #6  
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From: San Diego
Car: 1994 Trans Am
Engine: LT1
Transmission: Auto
Axle/Gears: 3.23
I don't have my car in front of me right now, but is there another nipple on that side of the radiator? Did you plug the "stock" nipple or something? Is that even a stock radiator? Sorry for the questions.

And for those SLP runners, for some reason they look different from any others I've seen. Really cool!
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Old Jul 11, 2005 | 01:19 PM
  #7  
1989GTATransAm's Avatar
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From: Cypress, California
Car: 1989 GTA
Engine: 369 TPI
Transmission: 4L60E
Axle/Gears: 3.70 Nine Bolt
Yes I plugged the stock radiator overflow and moved it around to the passenger side so that my 3.50" cold air intake would work. Yes that is the stock factory radiator. Those SLP runners have been heavily modified. It shows what can be done with them. Allen
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Old Jul 11, 2005 | 05:15 PM
  #8  
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From: San Diego
Car: 1994 Trans Am
Engine: LT1
Transmission: Auto
Axle/Gears: 3.23
Here's my idea, I can cut off the hose nipple, JB weld the hole shut. Drill a hole in the other side and JB weld on a new hose nipple? Isn't there pressure on the walls of ther radiator or is JB weld strong enough? Obviously you got it to work, I'm just wondering how to get there. Thanks.
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Old Jul 11, 2005 | 05:36 PM
  #9  
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From: Cypress, California
Car: 1989 GTA
Engine: 369 TPI
Transmission: 4L60E
Axle/Gears: 3.70 Nine Bolt
Here is what I did. I cut off the factory nipple down to the square part and tapped the hole. Don't remember the exact size. Then I installed an Allen head set screw with sealant.

On the new side I also drilled and tapped the whole. Trying to remember the size but I think a 1/4 inch hose nipple with 1/4 inch male pipe threads or something along that line. Also used sealant. Could even have been 1/8 inch. Just don't remember.

The pressure is not nearly as great as in the radiator. It has been working fine with absolutely no problems. Allen

Edit: Where the word "I" is present substitute "Dyno Don". He did the work and I just supervised and rounded up the parts.

Last edited by 1989GTATransAm; Jul 11, 2005 at 05:39 PM.
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