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SMOKIN-U
09-23-2009, 05:19 PM
i was just kind of curious as to what the largest single charger thats been ran on a commonrail? no nitrous just fuel. what kind of power did it make. how did it spool ect ect.... thanks

HIGH TECH RAM
09-23-2009, 05:48 PM
I know of a cr with a s-480. it spools like shlt tho

SMOKIN-U
09-23-2009, 06:06 PM
do you know what size exhaust wheel and housing he was running?

morkable
09-23-2009, 06:18 PM
I was running a K31 with a 1.01 AR... worked not too bad.. never got to dyno it though

SMOKIN-U
09-23-2009, 06:23 PM
hmm! does changing the ar make a huge difference on spoolup?

HIGH TECH RAM
09-23-2009, 06:31 PM
Yes Huge! I believe its a 1.10ar

ktmracer21
09-23-2009, 06:32 PM
hmm! does changing the ar make a huge difference on spoolup?

i would think so, smaller hole=more pressure..lol kinda like downshifting...but higher pressure with less overall flow would limit how much total air the charger could flow... its just a ratio to get right and would be different for every set up


theres one of our own on here thats running an s465...said it spools like crap...i think his truck is an 03 with an nv 5 spd.

Chris Blevins
09-23-2009, 06:37 PM
I know a guy who tried to spool a 1.32 exhaust...... Told him he was wasting his money!!!!

SMOKIN-U
09-23-2009, 07:02 PM
mine is in a .90 ar housing which then probally has a lot to do with why it spools so easy. would a cr truck have trouble jumping up to a 1.0 or 1.10? if not how big of a turbine wheel can you shove into those housing without it becoming unreliable

j-rod
09-23-2009, 07:17 PM
mine is in a .90 ar housing which then probally has a lot to do with why it spools so easy. would a cr truck have trouble jumping up to a 1.0 or 1.10? if not how big of a turbine wheel can you shove into those housing without it becoming unreliable

Where are you spooling the 0.90 at? What size is your turbine wheel?

SMOKIN-U
09-23-2009, 07:54 PM
18-2000 rpm it comes alive. 83mm wheel

Howling
09-24-2009, 09:35 PM
Running a 1.00 on my A5K.

Next turbo might be a S472/83/.90 and there is a '06 CR in the for sale section with a S475.

SMOKIN-U
09-25-2009, 06:48 PM
im running a 475 if you got the right setup you would like it.

Blacksdieselhp
09-27-2009, 09:28 PM
Im running an s475 with race cover from Bullseye and it spools awesome. Spools around 1800. Our other truck has a sb66 on it and this Bullseye turbo spools every bit as fast as the 66 does, maybe a little faster. But i am running a cam and ported head, so that def helps.

SMOKIN-U
09-27-2009, 10:20 PM
i am running a race cover as well and i can say with the cam mine spools around 1800-2000 really isnt all that much slower than my silver bullet was. that reason alone has me wondering how much bigger a guy could go

Sloverado
09-28-2009, 11:40 AM
I am working with some turbo's and we are spinning a 76mm in a auto truck no problem and may step up a bit more like a 78 or 80. We will have to see she dynoed over 780 on level 3 on a Smarty single pump so not telling big number

1badRam06
09-29-2009, 05:02 PM
Ive been running an Aurora 5k for awhile now and with no cam (yet) it doesnt do too bad on the street. Im pretty sure its a 1.0.

Sloverado
09-30-2009, 12:02 AM
A5K is a 71mm or 2.8 but the exh housing is like a .80 (small) so they get buy being bigger and still easy to drive.

Howling
09-30-2009, 06:07 PM
I upgraded to the 1.00 housing over the .83(I beleive).

Next will be a S400 or twins to ease drive pressures.

SMOKIN-U
09-30-2009, 10:37 PM
what size of turbine wheel would you need to run an 83mm compressor wheel to keep drive pressures in check? would the 83 turbine wheel be too small?

Howling
10-01-2009, 06:00 PM
When I spoke with Glenn at E.D. he stated that a S472/83/.90 exhaust housing would spool decent,if I wanted to stay a 2.8.

I spoke with a guy who went from a A5K to a S400 and his drive pressures reduced drasticaly.

I know Bean was or is still running a 76mm turbo.

joelc79
11-09-2009, 01:27 PM
bump

The Cummin Goat
11-09-2009, 03:14 PM
GT42 here. 76/82/1.01 It likes lots of R's. Not an ideal street turbo.

jpowel29
11-09-2009, 08:14 PM
How much rpm do you plan on running? The 83 exducer on the my GT42 runs out of breath around 4k rpm (you will see it on the dyno). Jumping up from a .98AR exhaust housing to a 1.28AR netted about 400-600rpm more. I really want to upgrade to a 87 exhaust wheel or larger. Just don't want to have to change pedistal & up-pipes to accomodate a T6 frame.

SMOKIN-U
11-09-2009, 09:19 PM
4k thats all it'll do unless something miraculess happens between now and then. i thought of going to the 87mm turbine wheel but i just dont think 4k will stay up on top of it on the big end. i'll find out how my new setup is gonna work soon enough when my trans gets back. got a few new tricks to aid in the search for 4 digit torque!! LOL

The Cummin Goat
11-10-2009, 06:08 AM
How much rpm do you plan on running? The 83 exducer on the my GT42 runs out of breath around 4k rpm (you will see it on the dyno). Jumping up from a .98AR exhaust housing to a 1.28AR netted about 400-600rpm more. I really want to upgrade to a 87 exhaust wheel or larger. Just don't want to have to change pedistal & up-pipes to accomodate a T6 frame.

I don't know if you realized it, but this is a Cummins CR thread. There is a big difference in how your D-max spools a turbo from a CR Cummins. Not to mention that we run out of fuel under 4k rpm's. It's like comparing apples and oranges.

Rods
11-10-2009, 08:01 AM
The one thing that caught my eye is the A/R aspect even tho its a DMAX I wonder how that affects the cummins also , I went down from a 90 to a 80 and my BP is around 20lbs more than boost but did that kill my TQ on the top end ??On the dyno it falls rapidly after 2200 rpm but the HP still stays up till 3200+ then he let off of it EGTS were 1600 and stayed , I never dynoed with the 90 a/r . I dont mind loosing the low end TQ If I could gain more on top