C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Thumper turbo project getting started

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Old Nov 30, 2004 | 01:22 PM
  #41  
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Man, it sure is fun to watch. LOL Looks great guys cant wait till you get to drive it. Its all worth it. Rick knows what I am talking about.


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Old Nov 30, 2004 | 04:01 PM
  #42  
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oh hell yes! I estimate that within 30 days it will be screaming on the dyno.
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Old Nov 30, 2004 | 04:57 PM
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Originally Posted by Baldturbofreak
oh hell yes! I estimate that within 30 days it will be screaming on the dyno.
I've got 2:1 odd that say not, you forgot your engineering estimate enhancemnt to the guess. That's 33 days

I hope you guys make some good progress before Christmas. I'm stuck on waiting on parts, but I finally found a good intercooler guy that should be able to have one made for me and to my door by next week.
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Old Nov 30, 2004 | 06:51 PM
  #44  
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Brian.. quit bogartin the suppliers... who is it? lol

Chris
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Old Nov 30, 2004 | 08:15 PM
  #45  
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Originally Posted by lcvette
Brian.. quit bogartin the suppliers... who is it? lol

Chris
Ok Chris, I'll leak the info, but its gonna cost ya

For 3" and under I found a guy on ebay the seller is named ubendman cute huh? He sells aluminized mild steel ubends 90 or 180 for cheap.

For my 3.5" I went with stahl headers inc. www.stahlheaders.com
I got the mild steel 7"clr ubends for $20.50 each.

For my 3.5" 90 degree bend with a 3.5" clr called Specialty Design Inc www.spdexhaust.com That piece was $39 but there was no other way to get the turn that sharp without a pain in the **** welding and pie cutting.

The aluminized mild steel needs to be welded with a wire feed welder, or so I'm told, but it doesn't need anything else after that. Its the stuff most exhaust shops use. The mild steel should be coated or its going to rust and look like crap after a very short time. I'm planning on having mine ceramic coated or jet hot coated.

I also just ordered my intercooler from Extreme Turbo Systems. They have an ebay store, but I just called him at 360-263-3748. I talked to J.R. and he is very knowledgeable and prompt on calling back. Which is much more than I can say about the Griffin people that I talked to. He's hooking me up with a Griffin core that will flow 1000 cfm with a very reasonable pressure drop. And the best thing is he said my custom IC will ship out later this week. The second best thing is it cost me under $500 to my door.


I hope this helps give you some places to go Chris, start spending that money
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Old Nov 30, 2004 | 08:22 PM
  #46  
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Man.. I am gonna start spending just as soon as my house sells.. once that happens lots o stuff including the vette are getting paid off.. only thing left will be rent and regular bills for the house I am renting.. should be able to start running the ole credit card back up to get the rest of everyhting I need! and have a garage again to work in.. right now my vette is at my friends new house in his 6 car garage.. yes i said 6 car garage..lol I am sick it is so BIG and nice..lol but I will definately be hitting up the IC guy for some info... I would like to see what you do with yours to get an idea.. (I know mine is going to be very similar) keep up the good work.. i love checking out all the pics! very inspiring.. once i am settled and the house is sold.. I am gonna get rolling strong on mine.. just been one damned thing after another!!!! ughh.... turbo take me away..lol


Chris
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Old Dec 2, 2004 | 11:06 AM
  #47  
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I finished bruce's a/c box today. Lotsa epoxy and woven mat. as soon as I finish sanding the corners, I'll paint 'er flat black and you'll never be able to tell it's not factory.
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Old Dec 2, 2004 | 06:04 PM
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more pic's
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Old Dec 3, 2004 | 12:12 PM
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Originally Posted by comp
more pic's
Looks Good so far
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Old Dec 3, 2004 | 06:03 PM
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Old Dec 6, 2004 | 10:18 AM
  #51  
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Hey guys, so what's the update? Any work this weekend?

What are you doing to modify the A/C box? I've gotta do something similar but more extensive. It looks like sheet metal, or is it a fiberglass patch of somesort?
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Old Dec 6, 2004 | 01:05 PM
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Originally Posted by mn_vette
Hey guys, so what's the update? Any work this weekend?

What are you doing to modify the A/C box? I've gotta do something similar but more extensive. It looks like sheet metal, or is it a fiberglass patch of somesort?
When I did mine I just used fiberglass matting and resin... easy!
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Old Dec 6, 2004 | 03:17 PM
  #53  
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Originally Posted by TONYDEE64
When I did mine I just used fiberglass matting and resin... easy!

Where did you pick this stuff up at? And how much did it run you?
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Old Dec 6, 2004 | 05:55 PM
  #54  
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Originally Posted by mn_vette
Where did you pick this stuff up at? And how much did it run you?
Wal-mart man I bought a gallon of polyester resin and a pack of mat (get the woven not the chopped mat) for less than $30. I used the piece that I cut out of the box, turned it around and cut the filler out of the fiberglass from the storage compartment we cut out.
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Old Dec 6, 2004 | 06:29 PM
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Originally Posted by mn_vette
Hey guys, so what's the update? Any work this weekend?

What are you doing to modify the A/C box? I've gotta do something similar but more extensive. It looks like sheet metal, or is it a fiberglass patch of somesort?
I have an A/C box out of a 96 lt1 vette if you don't want to cut your's up i will let it go cheap.
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Old Dec 7, 2004 | 02:06 AM
  #56  
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Originally Posted by Baldturbofreak
lol, nice he posts the pic where I have severe plumber's crack. The cold side is almost done. I will have bruce's inercooler mount and reworked a/c box done by this weekend. Next I will make up the mount for the turbo.
LOL

Way project!

You can get fiberglass mat or cloth at Home Depot at a good price too.

Last edited by BrianCunningham; Dec 7, 2004 at 02:09 AM.
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Old Dec 7, 2004 | 10:06 AM
  #57  
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Originally Posted by Blown 96
I have an A/C box out of a 96 lt1 vette if you don't want to cut your's up i will let it go cheap.
Thanks for the offer, but I'm gonna have to pass. Mine is already cracked in two places so I've got no problem cutting it up.

Mine won't be a simple trim this cut that type of job. I'm basically going to hack the thing in half and only use the top half. Maybe 3/4 if there's room.

But now I know what I can try to get it to work.
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Old Dec 7, 2004 | 01:23 PM
  #58  
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Originally Posted by mn_vette
Thanks for the offer, but I'm gonna have to pass. Mine is already cracked in two places so I've got no problem cutting it up.

Mine won't be a simple trim this cut that type of job. I'm basically going to hack the thing in half and only use the top half. Maybe 3/4 if there's room.

But now I know what I can try to get it to work.
The real trick is to use the ZR1 heater box and cover as it moves it all back out of the way by two or three inches.
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Old Dec 7, 2004 | 02:01 PM
  #59  
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Originally Posted by TONYDEE64
The real trick is to use the ZR1 heater box and cover as it moves it all back out of the way by two or three inches.

I don't think that will help. I'm using the stock impalla header that comes back to the firewall right where the box should end up. I had to grind down the header to get it to fit. I've got it blocked off with some sheet metal now but the header is RIGHT against it.

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Old Dec 12, 2004 | 04:01 PM
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I worked on the turbo mount and the hot side tubing yesterday. But today my back feels like crap and I have 4 finals next week so it looks like it will be next weekend before I finish all the plumbing. (minus the intake and exhaust before and after the turbo).
Bruce should have all the components for the oiling and fuel system by then and we might be able to fire it up soon. As a side note I did a little experimenting and have found a Plethora of tighter (and looser) turbine housings that fit our series turbo. Including water cooled housings out of marine applications.
We should have no problem sizing the thumper's hot side for the desired response despite being 60 odd inches from the nearest exhaust port. generous application of swain tech coatings and thermal wrappings will help keep efficiency high.
Im hoping to see at least 750 Rwhp @ 1 bar or so. Possibly higher thanks to the refridgerated intercooler.
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