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Old Jul 4, 2009 | 09:16 PM
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New Turbo
Getting ready to pull my GTP38R turbo next week and install a Garrett GT42 in its place. I hope it performs as well as I think it will!

 
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Old Jul 4, 2009 | 09:44 PM
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Pardon my ignorance, why the switch? I've heard of the 38R, what does the 42 have that the 38R doesn't? I assume it's a better match to your quite impressive list of mods. More boost? Why not one of the twin turbos?

Even though I probably don't have the proper appreciation of just what you have, I would like to congratulate you anyway. Congrats!
 
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Old Jul 4, 2009 | 10:18 PM
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More air..........
 
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Old Jul 4, 2009 | 11:16 PM
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Nice, is it ball bearing? Im guessing not, as you probably would have noted it. 1.01 housing? Where did you buy it from, my buddy just sold one, lol maybe you bought it from a guy in MD
 
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Old Jul 5, 2009 | 07:53 AM
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Greg, did you get the mounting kit done??? That will be one nice ride once it is put in. I guess i will need to check out the truck when i get home!
 
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Old Jul 5, 2009 | 08:07 AM
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I'd like to know the difference between the 38R and the GT42, i,m assuming more flow?? Do remember your were going with this turbo in an earlier thread, subscribing Greg...
 
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Old Jul 5, 2009 | 08:15 AM
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The main differences are the wheels. The compressor wheel on the 38R is 66mm, while the GT4294 is 70.3 mm. Exhaust side on the 38R is 88mm while the 4294 is 94mm.

The maps are very close on the bottom end, but the 4294 is much wider mid to top range and should support 55-60 psi while the 38R is tapped out at 40 psi.

I know of 3 other people running this turbo who all really like it.
 
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Old Jul 5, 2009 | 01:51 PM
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Congrat’s Greg. Glad to hear you got it I hope it performs like to want it to. Make sure and let us know.
 
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Old Jul 5, 2009 | 05:24 PM
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Thanks for the explaination Greg, enjoy it...nice...
 
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Old Aug 15, 2009 | 06:08 PM
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Originally Posted by big poppa pump
Thanks for the explaination Greg, enjoy it...nice...
You betcha
 
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Old Aug 15, 2009 | 07:48 PM
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Did you get that monster in Greg, just wondering, soon?? That thing looks mean...
 
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Old Aug 15, 2009 | 07:56 PM
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Why not go with dual turbos, use the big one to feed the little one?
 
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Old Aug 15, 2009 | 09:19 PM
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Originally Posted by Kwikkordead
Why not go with dual turbos, use the big one to feed the little one?
Wouldn't you do it the other way? Little one feeding the big one?
 
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Old Aug 15, 2009 | 11:18 PM
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Originally Posted by big poppa pump
Did you get that monster in Greg, just wondering, soon?? That thing looks mean...
Yes I did get it installed a few days ago. Spools up surprisingly fast, almost as fast as my 38R did. This thing is nasty once I get above 10 psi and hammer it. I have not done a WOT run, I heard these need some break in miles.

Here are a few pictures.







 
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Old Aug 16, 2009 | 08:58 AM
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I can say I never seen a setup like that, some pre fabing, looks like on the cold side IC, correct?? Is the whistle more noticable between the 38R and the GT42?? Good deal Greg
 
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