TPI Long Tube Runner Project
Supreme Member
iTrader: (1)
Joined: Feb 2005
Posts: 2,642
Likes: 2
From: Pleasant Grove, Utah
Car: 1993 GMC Typhoon
Engine: 4.3 Turbo
Transmission: 4L60
Axle/Gears: 3.42
Re: TPI Long Tube Runner Project
there is serious money to be made from this, hate to see you pass it up.
Thread Starter
Supreme Member
iTrader: (3)
Joined: Sep 2003
Posts: 6,859
Likes: 14
From: Cypress, California
Car: 1989 GTA
Engine: 369 TPI
Transmission: 4L60E
Axle/Gears: 3.70 Nine Bolt
Re: TPI Long Tube Runner Project
Seeing as it is an Edelbrock TPI base they would have no problem modifying the one they have. For the general market they would probably have to narrow the base to head opening down to a Felpro 1204 gasket. Right now it is just under the size of a Felpro 1206. The end user could then open it up to what ever size opening his head has.
I bet the manufacturers think this is old technology and would not sell. The BBK turtle intake did not do what they thought it would and it appears that they have dropped it. I really don't know how big of a market there would be. If someone wants to market it they have my blessings.
I bet the manufacturers think this is old technology and would not sell. The BBK turtle intake did not do what they thought it would and it appears that they have dropped it. I really don't know how big of a market there would be. If someone wants to market it they have my blessings.
Junior Member
Joined: Apr 2009
Posts: 47
Likes: 0
From: Montreal, Quebec, Canada
Car: 87 Iroc-z
Engine: 350/340 hp, 400lb-ft GM crate
Transmission: custom built 700r4
Axle/Gears: 3.73
Re: TPI Long Tube Runner Project
if it iliminates the air restriction of a standard TPI and generates alot of torque because of the long runners like a standard TPI does, i'm sure it would sell! I sure would buy it!
Joined: May 2009
Posts: 4,915
Likes: 41
From: Far West
Car: 1986 Camaro Z28 IROC-Z
Engine: 350 Tuned Port Injection, for now.
Transmission: 700R4
Axle/Gears: Posi - 3.23
Re: TPI Long Tube Runner Project
1989GTATransAm, it's official. My vacation has been approved. My family and I will be going to Universal Studios in April, 9th through the 11th. So can I get the adress to Dyno Dons shop to see your incredible project?
Thread Starter
Supreme Member
iTrader: (3)
Joined: Sep 2003
Posts: 6,859
Likes: 14
From: Cypress, California
Car: 1989 GTA
Engine: 369 TPI
Transmission: 4L60E
Axle/Gears: 3.70 Nine Bolt
Re: TPI Long Tube Runner Project
Here is his address and information.
Don Lorentzen
2831 White Star Ave #A
Anaheim, CA 92806
(714) 630-1502
Don Lorentzen
2831 White Star Ave #A
Anaheim, CA 92806
(714) 630-1502
Joined: May 2009
Posts: 4,915
Likes: 41
From: Far West
Car: 1986 Camaro Z28 IROC-Z
Engine: 350 Tuned Port Injection, for now.
Transmission: 700R4
Axle/Gears: Posi - 3.23
Re: TPI Long Tube Runner Project
Well there was no time to visit Dyno Dons shop. Bummer. Any updates?
Thread Starter
Supreme Member
iTrader: (3)
Joined: Sep 2003
Posts: 6,859
Likes: 14
From: Cypress, California
Car: 1989 GTA
Engine: 369 TPI
Transmission: 4L60E
Axle/Gears: 3.70 Nine Bolt
Re: TPI Long Tube Runner Project
Waiting to get into Don's shop myself for the install.
Thread Starter
Supreme Member
iTrader: (3)
Joined: Sep 2003
Posts: 6,859
Likes: 14
From: Cypress, California
Car: 1989 GTA
Engine: 369 TPI
Transmission: 4L60E
Axle/Gears: 3.70 Nine Bolt
Re: TPI Long Tube Runner Project
The intake system is being installed on the car right now. Probably pick the car up on Tuesday. We had to put a small dent in the runner for injectors 4 and 5 to clear. Not sure what happened as it seemed to work fine on the bench. I hope it does not screw things up to much. Should have chasis dyno number around the first of the year. Waiting on some other projects to come to fruition so we can all dyno together.
Last edited by 1989GTATransAm; Nov 26, 2012 at 03:06 PM.
Re: TPI Long Tube Runner Project
A small dent shouldn't mess things up too much if at all. I saw testing where they showed that small clearance dents in header tubes don't show much if any flow restriction. Should apply to your intake runners as well.
Hope all the other projects get done soon so we can all see the results of all your hard work.
Hope all the other projects get done soon so we can all see the results of all your hard work.
Thread Starter
Supreme Member
iTrader: (3)
Joined: Sep 2003
Posts: 6,859
Likes: 14
From: Cypress, California
Car: 1989 GTA
Engine: 369 TPI
Transmission: 4L60E
Axle/Gears: 3.70 Nine Bolt
Re: TPI Long Tube Runner Project
Got the car back with version 2 of the LTR project installed. I have to say it sure looks nice sitting in there. Only thing now is a chasis dyno run and some tuning on the dyno. By the way I am considering selling version one of the LTR project. It would sure make a nice intake system for someone. It put down over 400rwhp in my car and has instant torque.
It just peaked a little lower than I wanted but would probably be just right for most. Anyways here are some pictures of the install.
Passenger side:

Straight ahead:

Drivers side:
It just peaked a little lower than I wanted but would probably be just right for most. Anyways here are some pictures of the install. Passenger side:

Straight ahead:

Drivers side:
Last edited by 1989GTATransAm; Nov 28, 2012 at 09:40 PM.
Joined: Jun 2000
Posts: 5,364
Likes: 51
From: Enschede, Netherlands
Car: 82 TA 87 IZ L98 88 IZ LB9 88 IZ L98
Engine: 5.7TBI 5,7TPI 5.0TPI, 5,7TPI
Transmission: T5, 700R4, T5, 700R4
Axle/Gears: 3.08, 3.27, 3.45, 3.27
Re: TPI Long Tube Runner Project
How much would you take for it?
Thread Starter
Supreme Member
iTrader: (3)
Joined: Sep 2003
Posts: 6,859
Likes: 14
From: Cypress, California
Car: 1989 GTA
Engine: 369 TPI
Transmission: 4L60E
Axle/Gears: 3.70 Nine Bolt
Re: TPI Long Tube Runner Project
I've been reading this post for two days while working, lol! I applaud you and your drive to improve a long runner TPI system! I still think it's one of the coolest intakes that was ever developed and for you to take it up many levels with your R&D is awesome! Can't wait to hear the results!!
Joined: Oct 2001
Posts: 12,228
Likes: 1,156
From: Il
Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: TPI Long Tube Runner Project
Very well done!
Thread Starter
Supreme Member
iTrader: (3)
Joined: Sep 2003
Posts: 6,859
Likes: 14
From: Cypress, California
Car: 1989 GTA
Engine: 369 TPI
Transmission: 4L60E
Axle/Gears: 3.70 Nine Bolt
Re: TPI Long Tube Runner Project
Just got back from a little drive over to the gas station to fill it up. Drives pretty good and one does not really feel the large cam. Even the guy who did the manifold swap was surprised as to how docile the car is considering all that has been done to it. I want to get on the throttle some but the roads are wet today. Believe it or not we are getting some rain here in SoCal.
Member
Joined: Mar 2010
Posts: 178
Likes: 1
Car: 91 gta ws6
Engine: L98
Transmission: 700 R4 TRANS
Axle/Gears: 3.23
Re: TPI Long Tube Runner Project
Just got back from a little drive over to the gas station to fill it up. Drives pretty good and one does not really feel the large cam. Even the guy who did the manifold swap was surprised as to how docile the car is considering all that has been done to it. I want to get on the throttle some but the roads are wet today. Believe it or not we are getting some rain here in SoCal.
well how does it perform
Supreme Member
Joined: Feb 2006
Posts: 1,777
Likes: 27
From: Sanctuary state
Car: 67 ******mobile
Engine: 385 Solid roller
Transmission: T-56
Axle/Gears: 4.11
Re: TPI Long Tube Runner Project
I know someone who could help you get a patent pending and possibly production on your piece. Working on a few products right now.
All USA made too. @%@ China
All USA made too. @%@ China
Thread Starter
Supreme Member
iTrader: (3)
Joined: Sep 2003
Posts: 6,859
Likes: 14
From: Cypress, California
Car: 1989 GTA
Engine: 369 TPI
Transmission: 4L60E
Axle/Gears: 3.70 Nine Bolt
Re: TPI Long Tube Runner Project
Thread Starter
Supreme Member
iTrader: (3)
Joined: Sep 2003
Posts: 6,859
Likes: 14
From: Cypress, California
Car: 1989 GTA
Engine: 369 TPI
Transmission: 4L60E
Axle/Gears: 3.70 Nine Bolt
Re: TPI Long Tube Runner Project
Let me know if there is any interest. I would be glad to help out. From a production stand point it is not a whole lot different from what is out there.
Thread Starter
Supreme Member
iTrader: (3)
Joined: Sep 2003
Posts: 6,859
Likes: 14
From: Cypress, California
Car: 1989 GTA
Engine: 369 TPI
Transmission: 4L60E
Axle/Gears: 3.70 Nine Bolt
Re: TPI Long Tube Runner Project
Found the lone good dyno pull from the first long tube runner project. I did not think there was one. So here it is.
Thread Starter
Supreme Member
iTrader: (3)
Joined: Sep 2003
Posts: 6,859
Likes: 14
From: Cypress, California
Car: 1989 GTA
Engine: 369 TPI
Transmission: 4L60E
Axle/Gears: 3.70 Nine Bolt
Re: TPI Long Tube Runner Project
Here is a dyno pull from yesterdays 2nd version of the long tube runner project. This version was to move the torque curve up which it did and add some horsepower which it did not. One difference is this run does not have the exhaust termination boxes on it. I will put them back on and see what difference it makes. Also the run where I got 420 rwhp with the First and modified SLP runners had the exhaust termination boxes on it.
One thing we did prove is that a long tube runner TPI intake system can make power past 6500 rpm. Don let off around 6700 and it was still riding out on the power band. I am to chicken to have tried for 7000rpm. I have never taken the motor up that high. So putting my Yank SS4000 stall back in with maybe a shift point at 6700 rpm outside of the initial launch the motor would never see less than 405rwhp going down the track.
One thing we did prove is that a long tube runner TPI intake system can make power past 6500 rpm. Don let off around 6700 and it was still riding out on the power band. I am to chicken to have tried for 7000rpm. I have never taken the motor up that high. So putting my Yank SS4000 stall back in with maybe a shift point at 6700 rpm outside of the initial launch the motor would never see less than 405rwhp going down the track.
Last edited by 1989GTATransAm; Dec 16, 2012 at 05:20 PM.
Thread Starter
Supreme Member
iTrader: (3)
Joined: Sep 2003
Posts: 6,859
Likes: 14
From: Cypress, California
Car: 1989 GTA
Engine: 369 TPI
Transmission: 4L60E
Axle/Gears: 3.70 Nine Bolt
Re: TPI Long Tube Runner Project
OK, I have had a few days to think about this and I also posted the results on Speedtalk for some review. It appears that the motor is running out of air around 5300rpm. It is just basically flat lining from there on up. I have seen this with some of my other builds with identical results when I run out of cam or the ports are to small.
Remember I had to slightly dent two of the runners for the injectors to clear. The guys at the shop who did the install had to dent the runners even further for the injectors to clear. The injectors I used to measure with on the bench and the ones on the car are apparently a little different. So this could be part of the problem.
The other is I don't know how much care was taken to position the base on the heads so that the ports line up in the best possible manner. Also I don't know how well the 1206 intake manifold gasket was placed on the heads and did it move. So the bottom line is I need to partially take this thing apart and start doing some investigating. Any intrusion into the ports will make the ports act smaller than they are.
If it comes to it I may have to re-do the runners so that they clear the two injectors without denting or maybe try and find a thinner injector.
Remember I had to slightly dent two of the runners for the injectors to clear. The guys at the shop who did the install had to dent the runners even further for the injectors to clear. The injectors I used to measure with on the bench and the ones on the car are apparently a little different. So this could be part of the problem.
The other is I don't know how much care was taken to position the base on the heads so that the ports line up in the best possible manner. Also I don't know how well the 1206 intake manifold gasket was placed on the heads and did it move. So the bottom line is I need to partially take this thing apart and start doing some investigating. Any intrusion into the ports will make the ports act smaller than they are.
If it comes to it I may have to re-do the runners so that they clear the two injectors without denting or maybe try and find a thinner injector.
Last edited by 1989GTATransAm; Dec 19, 2012 at 05:32 PM.
Joined: Mar 2000
Posts: 5,711
Likes: 133
From: Orange, CA
Car: '90 Trans Am-12.45@110.71
Engine: 355 w/AFR 195's Elem. 400/430 HP/TQ
Transmission: Tremec T-56
Axle/Gears: 12 Bolt 3.73
Re: TPI Long Tube Runner Project
You could be on to something there, I was looking
at the graph and it looks like turbulence.
at the graph and it looks like turbulence.
Thread Starter
Supreme Member
iTrader: (3)
Joined: Sep 2003
Posts: 6,859
Likes: 14
From: Cypress, California
Car: 1989 GTA
Engine: 369 TPI
Transmission: 4L60E
Axle/Gears: 3.70 Nine Bolt
Joined: Jan 2008
Posts: 329
Likes: 14
From: Grand Rapids MI
Car: 88 IROC-Z
Engine: 6.9L TPI(FIRST) 421ci
Transmission: T56
Axle/Gears: Ford 9" Eaton truetrac 3.50
Re: TPI Long Tube Runner Project
Get a camera like this and have a look inside without taking it apart.
http://www.ridgid.com/tools/seesnake-micro
This is the exact camera I used to line up my intake ports.
http://www.ridgid.com/tools/seesnake-micro
This is the exact camera I used to line up my intake ports.
Thread Starter
Supreme Member
iTrader: (3)
Joined: Sep 2003
Posts: 6,859
Likes: 14
From: Cypress, California
Car: 1989 GTA
Engine: 369 TPI
Transmission: 4L60E
Axle/Gears: 3.70 Nine Bolt
Re: TPI Long Tube Runner Project
Couple of approaches to solving the dented runner problem. One is I am looking into some thinner injectors. South Bay is doing some research for me. The current injectors are about .775" wide. I think I can get some that are .600" wide.
The other is I might "miter" cut the affected runners so I can bend them over ever so slightly. I think the width of a hacksaw blade would be enough. Then weld them back up and grind everything smooth again. Also I will make a tool to take out the dents. So things are slowly moving forward once again.
The other is I might "miter" cut the affected runners so I can bend them over ever so slightly. I think the width of a hacksaw blade would be enough. Then weld them back up and grind everything smooth again. Also I will make a tool to take out the dents. So things are slowly moving forward once again.
Member




Joined: Sep 2003
Posts: 373
Likes: 58
From: Springfield, IL
Car: '89 Formula WS6
Engine: L98
Transmission: 700r4/T56
Axle/Gears: BW 3.23
Re: TPI Long Tube Runner Project
I have to admit, I usually pay no attention to projects like this, and tend to write them off as being overzealous, and usually failing to deliver as a finished product. But man you delivered. I really like what you've done here. Props!
Joined: Oct 2001
Posts: 12,228
Likes: 1,156
From: Il
Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: TPI Long Tube Runner Project
Anything new to report??
Thread Starter
Supreme Member
iTrader: (3)
Joined: Sep 2003
Posts: 6,859
Likes: 14
From: Cypress, California
Car: 1989 GTA
Engine: 369 TPI
Transmission: 4L60E
Axle/Gears: 3.70 Nine Bolt
Re: TPI Long Tube Runner Project
Nothing new to report. Things are on hold with the TPI projectt until I get done with my current project. It is taking up all my resources and I mean all. I am putting a L92/6L80 into a 1965 Buick Skylark. A resto-mod if you will.
Junior Member
Joined: Jul 2004
Posts: 61
Likes: 0
Car: 1987 Monte Carlo SS
Engine: 406 TPI
Transmission: T56 6-speed
Re: TPI Long Tube Runner Project
Would love to see you get back to this, being a TPI guy (I LOVE the looks of TPI runners!) I am kind of outside looking in as my ride is a 1987 Monte Carlo SS with 6-speed and a TPI, I am running a 406 and the torque is awesome! All I ever hear from guys is how terrible TPI is and I would like to go beyond the mild porting I have done and bore out the butterfly's etc.
Good luck with your new project!
Good luck with your new project!
Thread Starter
Supreme Member
iTrader: (3)
Joined: Sep 2003
Posts: 6,859
Likes: 14
From: Cypress, California
Car: 1989 GTA
Engine: 369 TPI
Transmission: 4L60E
Axle/Gears: 3.70 Nine Bolt
Re: TPI Long Tube Runner Project
I have had a few inquiries about my large, long tube runner project. As of right now I probably would not be able to get back on the project until later this year. However the problem with that is I have to pass smog later this year or in January at the very latest. I don't want the car to be down during that time so maybe January will be when I get back on the project.
Supreme Member
Joined: Feb 2006
Posts: 1,777
Likes: 27
From: Sanctuary state
Car: 67 ******mobile
Engine: 385 Solid roller
Transmission: T-56
Axle/Gears: 4.11
Re: TPI Long Tube Runner Project
you know you could hit up Edelbrock to cast stuff for you too.
Youd be surprised whose stuff is cast at their foundries.
Youd be surprised whose stuff is cast at their foundries.
Joined: May 2009
Posts: 4,915
Likes: 41
From: Far West
Car: 1986 Camaro Z28 IROC-Z
Engine: 350 Tuned Port Injection, for now.
Transmission: 700R4
Axle/Gears: Posi - 3.23
Re: TPI Long Tube Runner Project
A hefty fee may be imposed. On top of that, if mass production is done, Edelbrock would probably receive 95% of each sale and 1989GTATransAm get only about 5% . This is a possible figure. For musicians, each cd sold, the artist receives about 5-25 cents from each cd costing aprox $15. Sad reality.
Senior Member
iTrader: (3)
Joined: Oct 2012
Posts: 725
Likes: 1
From: SC
Car: '87 IROC-Z | '99 SS
Engine: LB9 | LS1
Transmission: 700R4 | T56
Re: TPI Long Tube Runner Project
A hefty fee may be imposed. On top of that, if mass production is done, Edelbrock would probably receive 95% of each sale and 1989GTATransAm get only about 5% . This is a possible figure. For musicians, each cd sold, the artist receives about 5-25 cents from each cd costing aprox $15. Sad reality.
Joined: May 2009
Posts: 4,915
Likes: 41
From: Far West
Car: 1986 Camaro Z28 IROC-Z
Engine: 350 Tuned Port Injection, for now.
Transmission: 700R4
Axle/Gears: Posi - 3.23
Re: TPI Long Tube Runner Project
I do know. It's how business is done. First steps are to go Edelbrock to be able to obtain written permission to modify and patent one of his products. Once approval is granted, the next step is to get a patent and perform the steps to have the work copyrighted through the Library of Congress. Then once it is patented, if Edelbrock sees potential capital gains, it will take the "master". The. Negotiations begin with lawyers present to go over dollar figures and costs of mass production. The end result? The inventor will get a percentage per piece sold or agree to a buy out of the product and release all interests of goods. The end result can go either number of ways. A good example of how stuff is produced and marketed, but in a small scale would be the Doscovery Channels "Pitchmen" where people present their products, but get only a fraction of the sales.
Thread Starter
Supreme Member
iTrader: (3)
Joined: Sep 2003
Posts: 6,859
Likes: 14
From: Cypress, California
Car: 1989 GTA
Engine: 369 TPI
Transmission: 4L60E
Axle/Gears: 3.70 Nine Bolt
Re: TPI Long Tube Runner Project
A little update on this thread. I have the large long tube TPI back in my hands. I am going to install it back on the car and do some dyno pulls with it. I have no issues with the ECM like I did the last time out.
Joined: Oct 2001
Posts: 12,228
Likes: 1,156
From: Il
Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: TPI Long Tube Runner Project
Great news, can't wait !!
Thread Starter
Supreme Member
iTrader: (3)
Joined: Sep 2003
Posts: 6,859
Likes: 14
From: Cypress, California
Car: 1989 GTA
Engine: 369 TPI
Transmission: 4L60E
Axle/Gears: 3.70 Nine Bolt
Re: TPI Long Tube Runner Project
Thanks guys. I am also going to add a 4th gen radiator fan assembly while doing the install. I am looking forward to it. Dyno Don has a few cars that are ready to be dyno'd and I want to get in on the action. Remember, this unit flowed 335 cfm on Joe Sherman's flow bench. Here is a current picture of it as it sits in my den.
Junior Member
Joined: Feb 2004
Posts: 6
Likes: 0
From: CULLMAN Alabama
Car: 1995 Wrangler Sahara Jeep
Engine: 4.0L
Transmission: 5 speed
Axle/Gears: stock
Re: TPI Long Tube Runner Project
Really want to see what this will do.... I'm looking to build another 3rd Gen from the ground up and always looking at what others are doing to make the cars just a little bit better. It amazes me when you add all those little bits together you can come up with some wonderful stuff.
Thanks for sharing
Cameron
Thanks for sharing
Cameron
Thread Starter
Supreme Member
iTrader: (3)
Joined: Sep 2003
Posts: 6,859
Likes: 14
From: Cypress, California
Car: 1989 GTA
Engine: 369 TPI
Transmission: 4L60E
Axle/Gears: 3.70 Nine Bolt
Re: TPI Long Tube Runner Project
Hopefully we will have some results in the next 60 days. I am waiting for Dyno Don to have some room in his shop. Then a club dyno day will be set up.






