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FOUND turbo knowledge! (is this the right turbo?)

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Old 05-19-2005, 12:07 AM
  #46  
Campeck
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well.
I doesnt matter what you say...about the buying a 951 engine anyway.
everything else does matter! why do you think I should use a T3? I think it is a little too large in the space provided. right above the crossmember and a little toward the back.

If i were to use the T25...Would it still be effective? I wouldnt overboost it would i? It could make 8 psi to redline right? and later on could it make 10 to redline? 15?
Old 05-19-2005, 12:19 AM
  #47  
WesM951
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15psi, is the max boost a T25 will push before it looses its effiency. I have one Running 8psi on a 2L grand am se turbo, no IC.
Old 05-19-2005, 12:33 AM
  #48  
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ok.
I think it should do alright then.

















can I have it?
Old 05-19-2005, 02:32 AM
  #49  
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Oil is pressure fead to the turbo. Then drips throught the turbo/engine mount and it's connected hose which attaches to the oil pan with a banjo bolt. You will need to keep the turbo above the oil level in the pan. You should do a search (here / Google) for the Callaway 944 turbos. They were NA 944s that were converted to turbo. One of the listers here has one, I'm not sure if he has posted on this thread or not.

I wouldn't get too hung up on how many psi you will use. A higher compression ratio (CR) engine will produce more hp/tq per psi than an engine with a lower CR. Plus the higher CR engine will have more low rpm hp/tq. I could go a lot deeper here, but it would start to overcomplicate things.
Old 05-19-2005, 03:06 AM
  #50  
WesM951
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Originally Posted by Campeck
ok.
I think it should do alright then.can I have it?
No lol, but a friend of mine has the same turbo, freshly rebuilt. I'll see if its still for sale.
Old 05-19-2005, 08:59 AM
  #51  
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thanks.
and thanks for the oil explanation. hmmm. Ill have to make sure its not too low then.
thanks guys.
Old 05-19-2005, 10:31 AM
  #52  
ttwirz
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I use ArcI and ARCII For fuel management. I will be switching to a better O2 sensor for more acurate readouts.
Old 05-19-2005, 02:31 PM
  #53  
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Im currently looking at an APEXi controller.
it should do the trick.

Im also pulling off some of the ducts under the car and behind the front spoiler to make room for an intercooler. right now it looks like it will be 18X6X2. should be plenty.
Old 05-19-2005, 04:05 PM
  #54  
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a 951 inter coolor fits in the front.
Old 05-19-2005, 04:50 PM
  #55  
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indeed it does. but there is NO way that the pipes from the turbo can get to the top of the engine on the pass side. ill have pics in a sec of my cardboard intercooler mounted,
LOL!
Old 05-19-2005, 05:47 PM
  #56  
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Originally Posted by Campeck
but there is NO way that the pipes from the turbo can get to the top of the engine on the pass side.
Already been done.

See http://www.lindseyracing.com/cust1a.htm for pictures.

Chirs White
Old 05-19-2005, 06:56 PM
  #57  
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ha.
thats a race car.
I dont want to hack away half of my frame.

im going to do all this with minimal alteration on the car body.
Old 05-19-2005, 08:02 PM
  #58  
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alright guys.

the way I wanted it to work Isnt going to work because the outlet for the intercooler is blocked by AC pipes. You would have to move them and I did on my car and now there is a little leak (no biggie..im taking it off anyway) and since I said i want to do this with very little modification I need an intercooler that is....

if you can find a website that custom makes them...please ask..if you know a friend..please ask..maybe i missed something on ebay?
thankyou.
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Old 05-19-2005, 08:03 PM
  #59  
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the 22 can be less than 22 and it can also be less than 15

but the 6 and 3 need to stay the same.
thankyou.
Old 05-19-2005, 10:17 PM
  #60  
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Originally Posted by Campeck
why do you think I should use a T3? I think it is a little too large in the space provided. right above the crossmember and a little toward the back.

If i were to use the T25...Would it still be effective? I wouldnt overboost it would i? It could make 8 psi to redline right? and later on could it make 10 to redline? 15?
If it was one of the smaller T25 turbine wheels you could over spool it.

Well I built a twin turbo 4.5L 928 and used twin t3's I used one step down from a SVO turbine trim, and one step up from the stock compressor trim (custom). Also lightened and clipped turbine wheels and it was awsome. Started spooling at about 1300 rpm with no lag. that setup was recommended to me by a turbo builder. that might be a good idea is to call for a recommendation. That particular setup did start running flat at about 5500 rpm.

A t25 would work. really anything will work, its more a question of how you want it to work. T25's are more designed for streetablility and depending on the trim could be dynomite off the line and a dog above 4000.

At any rate at 8 psi it should be fine. If you go the t25 route you may want to consider a T28 which is a t25 turbine and a t3 compressor side and clip the turbine for less back pressure and use the larger exhaust housing.

Actually I would call a turbo builder and get their recommendation for what type of application you are running.


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