What to change on current compound setup - Competition Diesel.Com

russcone · 06-12-2017, 07:02 PM

Okay trucks a 06 auto with dual pumps, exergy 100% overs and the current turbo setup is a htt 66/73/13 and 75/96/1.32. I'm not really sure what this setup is capable of producing power wise. I'd like enough air for close to 1000 but for now I'm trying to stay around 850ish. I was thinking I could do away with the t3 housing and go t4 but not sure if that would be enough. Any thoughts would be greatly appreciated. I originally built this kit with what I had and have since grown with more fuel.

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TBittner · 06-12-2017, 07:06 PM

Change the 475 out for a 480 or slightly larger. Im not sure if changing your 66 t3 charger will alter your piping but something to consider as well.

turbo2387 · 06-12-2017, 07:41 PM

The 75mm is way to small for your goals. External gate on the secondary would help too.

russcone · 06-12-2017, 08:41 PM

So if I changed the 75 to and 80 would my 66 still be restricted being t3? It has the internal wastgate and I wanna say it's around 30-35 psi now.
I'm almost at the point of yanking this setup out and running a 472/83/1.0 sxe as a single. I can get my hands on one very easily.

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SixOhh · 06-14-2017, 09:31 AM

is it a Daily driver? worried about drive pressures?

30-35 psi? you can go a good 10 lbs higher before worrying about volumetric efficiency being a problem.

you have enough fuel for 850 but with EFI now a days you can run a big single and get it to spool descent with good tuning.

my setup below has been making 800 for almost 4 years now and i only have 50% overs. my only complaint is initial spool up but some if that is due to my converter.

russcone · 06-15-2017, 05:56 PM

Truck is a daily and will be till I get a work truck. I dont have a drive pressure gauge so not sure what drive pressure is. Talked to the guys at Stainless Diesel and they recommended just throwing a 480 on and it'll be enough for sure. They said the t3 isnt as restrictive as you think, that it'll be fine. They even mentioned the psi ratio should be around 50/50 or a little lower on the secondary side

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not enoughsmoke · 06-16-2017, 02:49 AM

change out to t4 and a 80mm or bigger no gate needed it will do 850 i had the same setup.

here is a start
80 mm compressor and housing - Competition Diesel.Com - Bringing The BEST Together

06-12-2017, 07:02 PM	#1
russcone Name: russcone Title: Green Behind the Ears Status: Not Here Join Date: Jun 2013 Member`s Gallery Posts: 81	What to change on current compound setup Okay trucks a 06 auto with dual pumps, exergy 100% overs and the current turbo setup is a htt 66/73/13 and 75/96/1.32. I'm not really sure what this setup is capable of producing power wise. I'd like enough air for close to 1000 but for now I'm trying to stay around 850ish. I was thinking I could do away with the t3 housing and go t4 but not sure if that would be enough. Any thoughts would be greatly appreciated. I originally built this kit with what I had and have since grown with more fuel. Sent from my XT1254 using Tapatalk __________________ 2006 big horn, 100s, 10mm stroker, studded, htt 66, efi. 1966 Chevrolet c10 12v swap currently in progress http://competitiondiesel.com/forums/...=1#post2224458

06-12-2017, 08:41 PM	#4
russcone Name: russcone Title: Green Behind the Ears Status: Not Here Join Date: Jun 2013 Member`s Gallery Posts: 81	So if I changed the 75 to and 80 would my 66 still be restricted being t3? It has the internal wastgate and I wanna say it's around 30-35 psi now. I'm almost at the point of yanking this setup out and running a 472/83/1.0 sxe as a single. I can get my hands on one very easily. Sent from my XT1254 using Tapatalk __________________ 2006 big horn, 100s, 10mm stroker, studded, htt 66, efi. 1966 Chevrolet c10 12v swap currently in progress http://competitiondiesel.com/forums/...=1#post2224458

06-14-2017, 09:31 AM	#5
SixOhh Name: SixOhh Title: EPA unfriendly Status: Not Here Join Date: Aug 2008 Location: Magnolia, TX Member`s Gallery Posts: 1,108	is it a Daily driver? worried about drive pressures? 30-35 psi? you can go a good 10 lbs higher before worrying about volumetric efficiency being a problem. you have enough fuel for 850 but with EFI now a days you can run a big single and get it to spool descent with good tuning. my setup below has been making 800 for almost 4 years now and i only have 50% overs. my only complaint is initial spool up but some if that is due to my converter. __________________ 07' Silver 2500 5.9 4x4 LWB Goerend 48re-csp5/EFI- T&C Mild Cp3-F1 Apex 7.5 -S369sxe Amsoil Coolant Bypass -Airdog-D&J- Hamilton 188/220 -AFE-ARP Opti-Lube H-Town Off-Road

06-15-2017, 05:56 PM	#6
russcone Name: russcone Title: Green Behind the Ears Status: Not Here Join Date: Jun 2013 Member`s Gallery Posts: 81	Truck is a daily and will be till I get a work truck. I dont have a drive pressure gauge so not sure what drive pressure is. Talked to the guys at Stainless Diesel and they recommended just throwing a 480 on and it'll be enough for sure. They said the t3 isnt as restrictive as you think, that it'll be fine. They even mentioned the psi ratio should be around 50/50 or a little lower on the secondary side Sent from my XT1254 using Tapatalk __________________ 2006 big horn, 100s, 10mm stroker, studded, htt 66, efi. 1966 Chevrolet c10 12v swap currently in progress http://competitiondiesel.com/forums/...=1#post2224458

06-16-2017, 02:49 AM	#7
not enoughsmoke Name: not enoughsmoke Title: floatin in tha gulf Status: Not Here Join Date: Dec 2008 Location: tenn Member`s Gallery Posts: 5,730	change out to t4 and a 80mm or bigger no gate needed it will do 850 i had the same setup. here is a start 80 mm compressor and housing - Competition Diesel.Com - Bringing The BEST Together __________________ 1995 F350 Powerstroke 1995 F350 Fummins 1995 F250 lightning clone 1968 Fastback GT 2003 F150 1994 F350 IDIT 1988 F350 IDIT 2003 Dodge 2500 1999 F250 Powerstroke 1993 F250 Fummins 1979 F350

06-12-2017, 07:06 PM	#2
TBittner Name: TBittner Title: Too Much Time Status: Not Here Join Date: Mar 2010 Location: Irwin, PA Member`s Gallery Posts: 462	Change the 475 out for a 480 or slightly larger. Im not sure if changing your 66 t3 charger will alter your piping but something to consider as well.

06-12-2017, 07:41 PM	#3
turbo2387 Name: turbo2387 Title: Nipple Fluffer Status: Not Here Join Date: Jun 2011 Location: Indiana Member`s Gallery Posts: 665	The 75mm is way to small for your goals. External gate on the secondary would help too.