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08-18-2010, 06:59 PM
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#1
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Name: Begle1
Title: Too Much Time
Status: Not Here
Join Date: Nov 2007
Location: Kihei, Maui
Member`s Gallery
Posts: 4,143
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Best way to build a cheap exhaust cut-out? Blast gate?
I'm wanting to add an exhaust cut-out right after my downpipe, anybody ever fabricate one on the cheap?
I'm thinking that a stainless steel sheetmetal blast gate would work decently enough to not sound and look like I had a constant exhaust leak? I'd put it on a cheap pneumatic actuator to open and close it.
The "for real" exhaust cut-outs I've seen have all been butterfly valves; would that be an inherently better design? Where could I find one of those cheap?
__________________
1990 D-250 Regular Cab: Automatic transmission, turkey air horn, wires.
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08-18-2010, 07:58 PM
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#2
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Name: Hurley
Title: BLAKLUNG
Status: Not Here
Join Date: Apr 2008
Location: Statesville, NC
Member`s Gallery
Posts: 3,698
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how about an elbow with those band-clamp things on both ends to take off when you are feeling froggy? On-the-go cut-outs seem cheesy to me
__________________
THIS
IS
COMPD.
95 2500 RCSB 2wd back-halfed and 4-linked
5x14/7mm +100cc/4k/11-blade billet 63/68/.91 T4
539/989
03 RCLB 4x4, SSR
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08-18-2010, 08:11 PM
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#3
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Name: Begle1
Title: Too Much Time
Status: Not Here
Join Date: Nov 2007
Location: Kihei, Maui
Member`s Gallery
Posts: 4,143
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I got a handful of switches on my dash that aren't doing anything and I'm installing a DPF on my first gen.
Get with my style yo.
__________________
1990 D-250 Regular Cab: Automatic transmission, turkey air horn, wires.
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08-18-2010, 08:59 PM
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#4
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Name: Hurley
Title: BLAKLUNG
Status: Not Here
Join Date: Apr 2008
Location: Statesville, NC
Member`s Gallery
Posts: 3,698
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i dont understand, yo
__________________
THIS
IS
COMPD.
95 2500 RCSB 2wd back-halfed and 4-linked
5x14/7mm +100cc/4k/11-blade billet 63/68/.91 T4
539/989
03 RCLB 4x4, SSR
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08-18-2010, 09:21 PM
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#5
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Name: Begle1
Title: Too Much Time
Status: Not Here
Join Date: Nov 2007
Location: Kihei, Maui
Member`s Gallery
Posts: 4,143
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Yo, check it out... I need a switch-toggled 4" exhaust cut out. I'd rather not spend the $400+ dollars an off-the-shelf one costs.
I have need of a switch-toggled 4" exhaust cut out because A. I'm installing a DPF on my truck and need to be able to bypass it to avoid plugging it during aggressive driving, B. I need to bypass the DPF to still be able to use my smoke screen, C. I have switches on my dash that aren't being used for anything and I need to connect to something.
What'd be the best way to fabricate an inexpensive, functional, switchable exhaust cut-out?
__________________
1990 D-250 Regular Cab: Automatic transmission, turkey air horn, wires.
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08-18-2010, 11:06 PM
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#6
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Name: XLR8R
Title: Crew Chief
Status: Not Here
Join Date: Sep 2007
Location: Pattonville, TX
Member`s Gallery
Posts: 2,364
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Prob'ly could use a big rig Kanuter Valve...
__________________
3 Nails Garage
Sleeps a flock of Rams & a Goat
GUN-HAPPY Crew Chief
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08-18-2010, 11:14 PM
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#7
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Name: dvst8r
Title: Unobtainium
Status: Not Here
Join Date: Feb 2008
Location: Airdrie, AB
Member`s Gallery
Posts: 2,053
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Throttle body from the JY, and a power door lock actuator from the same JY...
__________________
Brett
Assistant to the Manager, Ragged Edge Racing.
Quote:
Originally Posted by RonA
If i had some ham, I could have ham and eggs, if i had some eggs.
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08-18-2010, 11:31 PM
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#8
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Name: wwm
Title: TO MANY TRUCKS
Status: Not Here
Join Date: Mar 2009
Location: texas
Member`s Gallery
Posts: 801
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move out of that dumbass state and not worry about it
__________________
06 CTD 4X4 2" Thuren, 35"s, ATP EFI Tuning, Firepunk Trans, Fass 150, Flux 4's, PPE dual feeders, springs, studs and twins (Steed mani, Tial wastegate and 62 over 80.
94 rclb no plate, 4ks, FC's, afc mods, Mack plug, Mack 64mm turbo, gauges, metal dash, 5" stacks
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08-18-2010, 11:44 PM
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#9
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Name: roachie
Title: Taco Master
Status: Not Here
Join Date: Nov 2007
Location: East TN
Member`s Gallery
Posts: 11,133
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Quote:
Originally Posted by dvst8r
Throttle body from the JY, and a power door lock actuator from the same JY...
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FTW
__________________
99 F250____sold (to a ninja)
01 F250____Mexican F150
04 F350____Fat boy
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08-19-2010, 07:07 AM
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#10
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Name: Begle1
Title: Too Much Time
Status: Not Here
Join Date: Nov 2007
Location: Kihei, Maui
Member`s Gallery
Posts: 4,143
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Any auto experts know what uses a 4" throttle body in an easy-to-mount-to-a-pipe configuration?
I'm more interested in the DPF to achieve a stealth sleeper look, not draw attention to myself and be able to do a little bit of playing stoplight to stoplight without hazing all over whoever's to the right of me. It's just good manners, and because I don't think anybody's done it before. Being in California doesn't really have much to do it; I really get away with a whole lot since I am in California, since we have a nice 10-second excessive smoke law and have no inspections to worry about.
__________________
1990 D-250 Regular Cab: Automatic transmission, turkey air horn, wires.
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08-19-2010, 09:19 AM
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#11
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Name: Scooter's Roofing
Title: Too Much Time
Status: Not Here
Join Date: Oct 2006
Member`s Gallery
Posts: 17,007
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you're going to clog that DPF in 2 minutes... even with the cutout open
JMO
__________________
that's pretty much all of it
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08-19-2010, 11:17 AM
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#12
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Name: soggy
Title: Diesel Enthusiast
Status: Not Here
Join Date: Feb 2009
Member`s Gallery
Posts: 165
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There are reasons no one has willingly retrofitted a DPF onto their vehicle.
__________________
1992 W250 VE Powered
13.31 @ 98.92
1993 D350 CFC
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08-19-2010, 12:50 PM
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#13
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Name: bftrain
Title: Green Behind the Ears
Status: Not Here
Join Date: Jul 2010
Member`s Gallery
Posts: 43
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Quote:
Originally Posted by soggy
There are reasons no one has willingly retrofitted a DPF onto their vehicle.
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dido
__________________
04 2500HD Sierra LBCC, LB7/Allison, water injection,pre and post turbo pyrometers, exaxt steering upgrade, 110 gallon reserve tank, oil bypass centrifuge, b&w hide'a'ball, home skool fab front cow pusher and high efficiency filter and lift pump.
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08-19-2010, 03:54 PM
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#14
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Name: ENafziger
Title: Too Much Time
Status: Not Here
Join Date: Oct 2008
Location: Knoxville, TN
Member`s Gallery
Posts: 843
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Have you seen the offerings from QTP?
The 4" version includes an electrically actuated butterfly with switch for $185. I think through a distributor (Summit, etc) it can be had cheaper.
We've used these at work and they've held up pretty well.
QTP Application Chart
As for the DPF, I think you could passively regenerate with a little forethought. It may take close-coupled mounting with insulating, but I think it would be doable.
--Eric
__________________
2006 Dodge 3500 SRW, 62/476 twins, Flux 2.5s, G56, Carli 2.65s, etc. Jer. 33:3
2003 Ford Excursion, '97 Cummins P-Pump, HX35/475 twins, studded and o-ringed, ZF6/271, forged Rickson 19.5s.
1991.5 W250, NV4500, Rickson 19.5s, HE351, long travel suspension build
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08-19-2010, 05:05 PM
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#15
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Name: Begle1
Title: Too Much Time
Status: Not Here
Join Date: Nov 2007
Location: Kihei, Maui
Member`s Gallery
Posts: 4,143
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Thanks for that option Eric.
I imagine nobody's willingly retrofitted a DPF onto their vehicle because it's an expensive, heavy piece of technology that only lasts a 100,000 miles, causes problems and kills fuel economy... But considering that DPF's have been retrofitted and DPF-equipped trucks have been operated with more fuel than stock, I figure it is far from a technological impossibility.
I'm thinking that I have a hot enough standard duty cycle with no intercooler that I should be able to passively regenerate without too much trouble, and if needed I can start exhaust wrapping, setting wastegate controls to cruise with more boost or even try to press my smoke screen into working as an active regeneration.
__________________
1990 D-250 Regular Cab: Automatic transmission, turkey air horn, wires.
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