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09-16-2017, 09:41 AM
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#1
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Name: jpschade
Title: Green Behind the Ears
Status: Not Here
Join Date: Mar 2012
Member`s Gallery
Posts: 58
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compound tuning help
my buddy has a 96 with 188/220 hamilton cam, pushrods, valve springs, o'ring, 625's, ed 63/475 compounds, 024 dvs, 21 degrees of timing, 5x16s, benched 180 pump from seth, a1000, and built trans.
Ive only dealt with singles and never done much tuning with compounds. Truck has afc live and with smoked tuned out to little more than a haze its a dog. Afc on full fuel and smokes out the street without much power. Any help would be appreciated, thanks.
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97 dodge eclb SAC 5x14's, 467.7 fmw , 024s, tork tek ofv, fully built trans, dpc triple disc, no fuel plate, afc live, 4k gov springs, 28* timing, t4 steed w/ 44mm tial, racked barrels
1990 w250 5 speed cranked pump
2006 rclb 4wd stock for now
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09-16-2017, 10:39 AM
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#2
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Name: jasonc
Title: Too Much Time
Status: Not Here
Join Date: Nov 2009
Member`s Gallery
Posts: 4,412
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Is the secondary a gated t3 housing?
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09-16-2017, 02:10 PM
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#3
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Name: jpschade
Title: Green Behind the Ears
Status: Not Here
Join Date: Mar 2012
Member`s Gallery
Posts: 58
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Yes it is a t3 gated
__________________
97 dodge eclb SAC 5x14's, 467.7 fmw , 024s, tork tek ofv, fully built trans, dpc triple disc, no fuel plate, afc live, 4k gov springs, 28* timing, t4 steed w/ 44mm tial, racked barrels
1990 w250 5 speed cranked pump
2006 rclb 4wd stock for now
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09-16-2017, 02:34 PM
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#4
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Name: DDually
Title: Still spooling..
Status: Not Here
Join Date: Nov 2009
Member`s Gallery
Posts: 2,095
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Do you know the gate is closed until you want it to be open? How much boost does it make now? Is there a gauge for the primary boost and the total boost?
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1995 Cummins with almost no matching paint, 2 dents
2001 VW TDI South bend, tune, nozzys, custom stuff that's rusting, one custom thing that's not rusting
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09-16-2017, 03:16 PM
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#5
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Name: jasonc
Title: Too Much Time
Status: Not Here
Join Date: Nov 2009
Member`s Gallery
Posts: 4,412
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About all you can do is tighten the gate on the secondary, what you describe is it's opening way to early or not closing off fully at all.
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09-24-2017, 08:37 PM
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#6
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Name: JariV
Title: Business Owner
Status: Not Here
Join Date: Nov 2008
Location: San Jose, CA
Member`s Gallery
Posts: 263
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21 degrees of timing sounds to target everything in the top rpms. Is that intended? I'd take that down to 17-18. And I'd tune the wastegate to open at 28psi. I'd also ditch the 024s with better ones. AFC does not need to be full.
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TwinTurbo Cummins (again)
Last edited by JariV; 09-24-2017 at 08:41 PM.
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09-25-2017, 07:53 AM
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#7
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Name: jlbayes
Title: Too Much Time
Status: Not Here
Join Date: Mar 2011
Location: michigan
Member`s Gallery
Posts: 2,399
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Quote:
Originally Posted by JariV
I'd also ditch the 024s with better ones.
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For what better ones?
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Jacob, 97 rclb
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09-25-2017, 09:38 AM
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#8
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Name: Redrider2911
Title: Too Much Time
Status: Not Here
Join Date: Nov 2015
Location: Yakima, WA
Member`s Gallery
Posts: 780
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Quote:
Originally Posted by jlbayes
For what better ones?
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That's what I was wondering. lol I feel 21* is still a perfectly fine timing as well. I run 23* on the street and love it.
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49 Willys Pickup. 5600lb. 11.8sec @115mph 1/4. 12 valve. MegaSquirted 47RH. 3.54 posi rear. 35" tires. 64mm HE351ve, S475 (75/96/1.32), A/W Intercooler. AFC mods. 5x16s. 191 DVs, 180 pump. 23*. 85psi. Build Thread
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09-25-2017, 09:53 AM
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#9
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Name: CorneliusRox
Title: Seasoned Rookie
Status: Not Here
Join Date: Dec 2012
Location: Detroit, MI
Member`s Gallery
Posts: 4,154
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Quote:
Originally Posted by JariV
21 degrees of timing sounds to target everything in the top rpms.
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I think you meant 31 deg. 21deg is what I set most everyone's trucks at for daily driving with a stock stall converter.
Sounds like a wastegate issue if the turbos aren't shot.
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Corey - BSME '21 Tesla Model 3 Perf
'22 DMax AT4 2500
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