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Old Feb 8, 2012 | 01:53 PM
  #221  
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what size do recommend on my rearmount proyect ? stock 346 ls1 intercooled

T70
T76
and on what .ar?
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Old Feb 8, 2012 | 02:43 PM
  #222  
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Originally Posted by 1964_442
what size do recommend on my rearmount proyect ? stock 346 ls1 intercooled

T70
T76
and on what .ar?
it depends how much poer you want. i personally will be running the on3 t76 with 1.0 twin scroll a/r housing.idk the specs on the t70 but the t76 has a small
exhaust wheel about the same as a tc76.i think my setup when done will spool very quick.id say though may as well get the t76
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Old Feb 25, 2012 | 01:22 PM
  #223  
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Any updates on you guys running on3 turbos as far as failures and such?
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Old Feb 25, 2012 | 03:00 PM
  #224  
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Originally Posted by rouseyss
I dont believe the on3 turbo will work with the modular hotside kit unfortunately
Just a heads up for anyone thinking of going with the Modular Turbo hotside and an On3 turbo. It works like the two were made for each other! You can check it out in my build thread in my signature.
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Old Mar 3, 2012 | 04:41 PM
  #225  
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Originally Posted by Doobie52
Just a heads up for anyone thinking of going with the Modular Turbo hotside and an On3 turbo. It works like the two were made for each other! You can check it out in my build thread in my signature.
Thats great news because that is exactly what I have.
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Old Mar 4, 2012 | 01:56 AM
  #226  
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Originally Posted by 1964_442
what size do recommend on my rearmount proyect ? stock 346 ls1 intercooled

T70
T76
and on what .ar?
This is what was spec'd for me. I'm also doing a custom rear mount. (LS9 Cam, Stock Bottom End)

On3 Performance - T4 Turbocharger - 76mm - (ball bearing) -
Compressor:
Inducer: 76.7mm, Exducer: 102.4mm, Inlet: 100mm, Outlet: 75mm
Exhaust: Flange: T4 Outlet: 3” Vband A/R: .96, Inducer: 74.2mm, Exducer: 64.5mm

Should be only another week. Found out my Methanol/Water pump is not working... have to order a new one.

Good luck.

Last edited by HRHohio; May 23, 2012 at 06:38 PM. Reason: Added: LS9 Cam, Stock Bottom End
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Old Mar 11, 2012 | 11:54 AM
  #227  
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I was also wondering about sizing. Want to do twins on a 408 but not sure of sizing. What a/r's would you guys suggest for twin 70's or 76's? Want to make 8-900 hp with decent spool up on the street. Just looking for suggestions or input
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Old Mar 11, 2012 | 12:11 PM
  #228  
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I ran the ebay t3t4 for years on a hayabusa with no issues good cheap turbos. Why buy from on3? Its the exact same china turbo most people bitch about but costs more to gave their name engraved on the cover.
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Old Mar 11, 2012 | 01:21 PM
  #229  
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Originally Posted by 2baditsnotachev
I ran the ebay t3t4 for years on a hayabusa with no issues good cheap turbos. Why buy from on3? Its the exact same china turbo most people bitch about but costs more to gave their name engraved on the cover.
the non ball bearing is $330 shipped everyone who has that t76 like godspeed and so fourth wants $500 for the journal t76.on3 is cheaper for the most part.

ill have results on my t76 rearmount in the next month.rearmount is almost done just waiting on a few parts
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Old Mar 12, 2012 | 08:13 PM
  #230  
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Originally Posted by ModularTurbo
smells like China to me guys.
Originally Posted by ModularTurbo
Magnum Turbos are not made in China they are made in South America...
LOL. So I guess Smelling like South America is ok, but Smelling like China... apparently that's not ok. Sorry, hehehe, I didn't get the memo.


Originally Posted by killernoodle
I'd be willing to bet the on3 turbos are made in the same factory as the Magnums. Especially considering they have ball bearing models as well.
Anyone get any confirmation on whether On3's are made in South America (Yay!) and not China (Boo!).

Because South America is still "Made in America", right? (Just down south... further south... past Texas... and we're ok with that)
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Old Mar 12, 2012 | 08:37 PM
  #231  
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Magnum did state that they used "some common parts" to the chinese turbos. My guess is that they get all the parts from China and assemble them in Brazil or wherever. Just a guess though based on their statement of using common parts.
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Old Mar 13, 2012 | 11:31 AM
  #232  
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Originally Posted by HRHohio
This is what was spec'd for me. I'm also doing a custom rear mount. (LS9 Cam, Stock Bottom End)

On3 Performance - T4 Turbocharger - 76mm - (ball bearing) - $717 includes shipping
Compressor:
Inducer: 76.7mm, Exducer: 102.4mm, Inlet: 100mm, Outlet: 75mm
Exhaust: Flange: T4 Outlet: 3” Vband A/R: .96, Inducer: 74.2mm, Exducer: 64.5mm

Should be only another week. Found out my Methanol/Water pump is not working... have to order a new one.

Good luck.
Would It help the lil exducer 64mm wheel, if you go from a 3in downpipe to a 4in?
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Old Mar 13, 2012 | 12:09 PM
  #233  
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FYI: For anybody wondering, i was told today by Mike @ on3 performance that all 76mm turbo's already come with the .96 backside, very nice people there btw and cant wait until my 76mm arrives.....
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Old Mar 13, 2012 | 12:42 PM
  #234  
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Originally Posted by 831jd
Would It help the lil exducer 64mm wheel, if you go from a 3in downpipe to a 4in?
Not sure it would help my setup very much.
1) I'm rear mount and
2) the 3" dumps about 24" from the turbo out the tailpipe.

Got my dyno numbers back. 550 rwhp @10 lbs boost
Not bad for rear mount.
Only issue I have is that I had put in 4.10 gears (before I decided to go FI). I burn through 1st so fast, I don't even see boost. Top out 3rd gear at about 115. Too low to finish the 1/4 mile.

First 1/4 mile run will be this Friday. Hope I do better than my 13.3 @101 before the turbo project. !!!
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Old Mar 13, 2012 | 12:54 PM
  #235  
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Originally Posted by 831jd
Would It help the lil exducer 64mm wheel, if you go from a 3in downpipe to a 4in?
No comma:

Would It help the lil exducer 64mm wheel if you go from a 3in downpipe to a 4in?
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Old Mar 13, 2012 | 01:36 PM
  #236  
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Originally Posted by Mr. Sir
No comma:

Would It help the lil exducer 64mm wheel if you go from a 3in downpipe to a 4in?
Wtf people like you mess ls1tech up for everyone! Your a jack *** dumb ****!!!! go somewere else to talk **** ppl come here to learn new things not make fun of?
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Old Mar 13, 2012 | 01:44 PM
  #237  
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[QUOTE=HRHohio;16076478]Not sure it would help my setup very much.
1) I'm rear mount and
2) the 3" dumps about 24" from the turbo out the tailpipe.

Got my dyno numbers back. 550 rwhp @10 lbs boost
Not bad for rear mount.
Only issue I have is that I had put in 4.10 gears (before I decided to go ?

Last edited by 831jd; Mar 13, 2012 at 01:51 PM.
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Old Mar 13, 2012 | 01:49 PM
  #238  
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Originally Posted by HRHohio
Not sure it would help my setup very much.
1) I'm rear mount and
2) the 3" dumps about 24" from the turbo out the tailpipe.

Got my dyno numbers back. 550 rwhp @10 lbs boost
Not bad for rear mount.
Only issue I have is that I had put in 4.10 gears (before I decided to go FI). I burn through 1st so fast, I don't even see boost. Top out 3rd gear at about 115. Too low to finish the 1/4 mile.

First 1/4 mile run will be this Friday. Hope I do better than my 13.3 @101 before the turbo project. !!!
Good luck nice numbers. Was this with the ball bearing one?
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Old Mar 13, 2012 | 03:32 PM
  #239  
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Originally Posted by 831jd
Good luck nice numbers. Was this with the ball bearing one?
Thanks! Yeah, this was rear mount T76 Ball Bearing (On3 Performance). Specs are posted a few posts above.

I was told that if I went with the journal bearing, the T70 would spool fine, but the T76 might have problems given my current setup. But when I mentioned that I may want to go forged bottom later and up the boost to > 10 psi, (and drop the rearend back down from 4.10 to 3.42), my guy said I should go with the T76 Ball Bearing. That way it will still spool good with current setup, and would give me the room to grow into the forged setup. The T76 BB will support >700 rwhp, which is more than I would ever want to see in a convertible.

Next steps, drop back down to 3.42 rearend (or 3.23... haven't firmly decided yet), then go forged bottom, then up the boost, then buy new tranny and driveshaft. Then see what else I can break.
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Old Mar 13, 2012 | 04:08 PM
  #240  
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[QUOTE=831jd;16076660]
Originally Posted by HRHohio
Not sure it would help my setup very much.
1) I'm rear mount and
2) the 3" dumps about 24" from the turbo out the tailpipe.

Got my dyno numbers back. 550 rwhp @10 lbs boost
Not bad for rear mount.
Only issue I have is that I had put in 4.10 gears (before I decided to go ?
Got the dyno sheet? I want to see when it starts boosting.
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