5.9L 12V Performance Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps Related to Performance and Longevity

top turbo for twin setup

Old Aug 24, 2010 | 02:50 PM
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Default top turbo for twin setup

i know this question has been asked, but im looking for some suggestions
what should i buy for a new top turbo
i have an hx40(60mm) over an ht3b 23cm housing
the hx40 is a lg pig and its holding my setup back
i think i need an s300
a bd super b would be nice,
or like a 62/65/14?
it doesnt have to be a big turbo because my ht3b spools up quick and moves some air.
im just looking for a nice fast spooling top turbo, that will not be to restrictive.
plus what turbo has a good wastegate so i can have a quick spool up with not alot of restriction. mods are in my sig. also if anyone what the pros and cons are of different exhaust wheels/housing do?
such as 62/65/14 or 62/71/14
even a 12cm?

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also if anyone has a turbo for sale that would suit my needs, i would be more than happy to look at it
 

Last edited by dan33klein; Aug 24, 2010 at 02:50 PM. Reason: Automerged Doublepost
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Old Aug 24, 2010 | 03:02 PM
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94 12valve's Avatar
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will you be running nos?

for fuel I think you would like the 62/65/12
 
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Old Aug 24, 2010 | 03:24 PM
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dont have nitrous now, im toying with the notion of getting it. but i might not.
like i said, this hx40 is junk, a super be is only a 57mm wheel.
a nice turbo to spool up superfast, but be able to flow alot to keep egts down is a must.
and i know the super bs have modded wastegates that should be good. i was happy with my hx35/40 hybrid for a top turbo, it was just to restrictive, i know an external wastegate is an option, but more work than i want to do

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i need something that moves more air at lower speeds and rpms while cruising also, im getting my 4:10 gears today too.
becuase 1000* crusing down the highway just aint cutting it anymore
 

Last edited by dan33klein; Aug 24, 2010 at 03:24 PM. Reason: Automerged Doublepost
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Old Aug 24, 2010 | 04:43 PM
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I'll stick with the 62/65/12 ... I loved that charger when I first had it on my truck. spooled very quick and moved some air
 
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Old Aug 24, 2010 | 05:24 PM
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Id do a 62/65/12 which would be a quick spooling turbo and move a lot of air. Diesel power source's standard twin kit is a 62/65/12 over an ht3b. Although a 62/14 will be slower spooling it will have lower drive pressures
 
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Old Aug 24, 2010 | 06:06 PM
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yeah HTT 62/65/12 is what i had on my CR for a while spooled better than factory, kept egts low and was going to be the top turbo in my eventual compound set up, but now i have a 64/74/14 that is going to be the top turbo in my eventual compound set up
 
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Old Aug 24, 2010 | 10:09 PM
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thanks alot guys, ill look into that turbo. you dont think it will be to restrictive?
how are the wastegates on them?
 
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Old Aug 24, 2010 | 10:24 PM
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Thats what my twin turbo kit is gonna be but instead of an ht3b mines a ht3b.5 with upgraded compressor wheel and housing. It wont be restrictive in my opinion until you get to the s475 and s480 size turbos. Then you would need a 64 size turbo on top. The waste gates are good. But I am going to do a bov I think maybe
 

Last edited by Farmboy 2.0; Aug 24, 2010 at 10:48 PM.
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Old Aug 24, 2010 | 11:46 PM
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Old Aug 24, 2010 | 11:49 PM
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the 62/65/12 is an awesome charger i would stay with it
 
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