Cutting down 181 DV's - Page 2

ShortBedCrew · 11-05-2009, 03:43 PM

Thanks, that makes sence to me. I have 131's in right now so I think I will take them out and cut them to a .25 or .22. Thanks for the good idea Sh111t!

__________________
1981 chevy 1 ton crewcab,shortbed, 95' CTD,HX35/ST50 twins,#100 plate, 15* timing, boost elbow,385 hp injectors, 4" exhaust, BHAF,3K gsk,SB clutch,8" lift,205tcase,4.11s,14r/60f both w/detroits,38"toyo MTs,18x10 chrome.SHES A BEAST!

TheSh111t · 11-05-2009, 03:47 PM

No problem. Us Chevy/Cummins guys gotta stick together

__________________
1981 Chevy Short bed - Cummins swap Hoping for ~450 RWHP
1995 12v, NV4500, s362/s475 compounds, PDI manifold, #5 fuel plate, 181 Delivery valves,
5" turbo back, Mack plug, 60# springs, 4000 GSK, Timing @ 16*, 5x12 injectors.

sstockton · 11-05-2009, 09:00 PM

I think what Derek is trying to say, is that the 131 has less shoulder than the 181, so that will flow more fuel than the 181, and the main difference is in the seats. So, if the same seats are used, the 131 will flow more than the 181. So by cutting the shoulder on the 181, and leaving the 131 the way it is, you will be accomplishing the results you were talking about. Having the higher flowing of the 2 dv's still stock, and modding the one that has more shoulder on it.
Sean

__________________
2000 2500 Reg. Cab 4x4. Built trans, Twins, Edge drag box, Sticks, Studs, cam, Gauges, etc...
09 2500 6.7L QCLB 4x4, G56, all stock for now.

Dual K20s · 11-06-2009, 01:07 AM

Yeah that's what I was getting at. I'm mostly just stirring things up.

When you have the two sets side by side cut the ones with the longer relief leading to the shoulder. If you don't want to mess them up yourself its an easy job for a machine shop.

__________________
98 Dodge 2500 Motor: 12 valve, original 913 pump with the basics, some DDP parts, FASS, and more stuff then they will let me put here
Drivetrain: 5-speed 4x4 w/ SB OFE clutch (Love it!)

ShortBedCrew · 11-06-2009, 04:48 PM

Sooooo......I should cut the 181s? Correct? Since im NOT changing the seat?

__________________
1981 chevy 1 ton crewcab,shortbed, 95' CTD,HX35/ST50 twins,#100 plate, 15* timing, boost elbow,385 hp injectors, 4" exhaust, BHAF,3K gsk,SB clutch,8" lift,205tcase,4.11s,14r/60f both w/detroits,38"toyo MTs,18x10 chrome.SHES A BEAST!

sstockton · 11-06-2009, 07:04 PM

You want to cut the 181's and run the 181 seats. 131 DV's with 181 seats are an upgrade from 181 DV's in 181 seats. 181 Dv's in 131 seats would be a down grade. Either way, I would cut the 181's as they have more shoulder on them. Running a 181 seat instead of the 131 seat will help a lot too.
Sean

__________________
2000 2500 Reg. Cab 4x4. Built trans, Twins, Edge drag box, Sticks, Studs, cam, Gauges, etc...
09 2500 6.7L QCLB 4x4, G56, all stock for now.

ShortBedCrew · 11-07-2009, 01:44 AM

Well crap! I dont have any 181 holders, so im screwed then!

__________________
1981 chevy 1 ton crewcab,shortbed, 95' CTD,HX35/ST50 twins,#100 plate, 15* timing, boost elbow,385 hp injectors, 4" exhaust, BHAF,3K gsk,SB clutch,8" lift,205tcase,4.11s,14r/60f both w/detroits,38"toyo MTs,18x10 chrome.SHES A BEAST!

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11-05-2009, 03:43 PM	#13 (permalink)
ShortBedCrew Cummins Nut Join Date: Jan 2007 Location: Nevada Posts: 309 Thanks: 0 Thanked 1 Time in 1 Post ShortBedCrew's Truck Pics	Thanks, that makes sence to me. I have 131's in right now so I think I will take them out and cut them to a .25 or .22. Thanks for the good idea Sh111t! __________________ 1981 chevy 1 ton crewcab,shortbed, 95' CTD,HX35/ST50 twins,#100 plate, 15* timing, boost elbow,385 hp injectors, 4" exhaust, BHAF,3K gsk,SB clutch,8" lift,205tcase,4.11s,14r/60f both w/detroits,38"toyo MTs,18x10 chrome.SHES A BEAST!

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11-05-2009, 03:47 PM	#14 (permalink)
TheSh111t Cummins Nut Join Date: Sep 2008 Location: Sacramento Posts: 313 Thanks: 1 Thanked 5 Times in 5 Posts TheSh111t's Truck Pics	No problem. Us Chevy/Cummins guys gotta stick together __________________ 1981 Chevy Short bed - Cummins swap Hoping for ~450 RWHP 1995 12v, NV4500, s362/s475 compounds, PDI manifold, #5 fuel plate, 181 Delivery valves, 5" turbo back, Mack plug, 60# springs, 4000 GSK, Timing @ 16*, 5x12 injectors.

11-05-2009, 09:00 PM	#15 (permalink)
sstockton Cummins Fanatic Join Date: Dec 2008 Location: Sonoma, Ca Posts: 173 Thanks: 2 Thanked 21 Times in 21 Posts sstockton's Truck Pics	I think what Derek is trying to say, is that the 131 has less shoulder than the 181, so that will flow more fuel than the 181, and the main difference is in the seats. So, if the same seats are used, the 131 will flow more than the 181. So by cutting the shoulder on the 181, and leaving the 131 the way it is, you will be accomplishing the results you were talking about. Having the higher flowing of the 2 dv's still stock, and modding the one that has more shoulder on it. Sean __________________ 2000 2500 Reg. Cab 4x4. Built trans, Twins, Edge drag box, Sticks, Studs, cam, Gauges, etc... 09 2500 6.7L QCLB 4x4, G56, all stock for now.

11-06-2009, 01:07 AM	#16 (permalink)
Dual K20s Tech Specialist Join Date: May 2007 Location: Ferndale CA/San Luis Obispo CA Posts: 1,444 Thanks: 0 Thanked 6 Times in 6 Posts Dual K20s's Truck Pics	Yeah that's what I was getting at. I'm mostly just stirring things up. When you have the two sets side by side cut the ones with the longer relief leading to the shoulder. If you don't want to mess them up yourself its an easy job for a machine shop. __________________ 98 Dodge 2500 Motor: 12 valve, original 913 pump with the basics, some DDP parts, FASS, and more stuff then they will let me put here Drivetrain: 5-speed 4x4 w/ SB OFE clutch (Love it!)

11-06-2009, 04:48 PM	#17 (permalink)
ShortBedCrew Cummins Nut Join Date: Jan 2007 Location: Nevada Posts: 309 Thanks: 0 Thanked 1 Time in 1 Post ShortBedCrew's Truck Pics	Sooooo......I should cut the 181s? Correct? Since im NOT changing the seat? __________________ 1981 chevy 1 ton crewcab,shortbed, 95' CTD,HX35/ST50 twins,#100 plate, 15* timing, boost elbow,385 hp injectors, 4" exhaust, BHAF,3K gsk,SB clutch,8" lift,205tcase,4.11s,14r/60f both w/detroits,38"toyo MTs,18x10 chrome.SHES A BEAST!

11-06-2009, 07:04 PM	#18 (permalink)
sstockton Cummins Fanatic Join Date: Dec 2008 Location: Sonoma, Ca Posts: 173 Thanks: 2 Thanked 21 Times in 21 Posts sstockton's Truck Pics	You want to cut the 181's and run the 181 seats. 131 DV's with 181 seats are an upgrade from 181 DV's in 181 seats. 181 Dv's in 131 seats would be a down grade. Either way, I would cut the 181's as they have more shoulder on them. Running a 181 seat instead of the 131 seat will help a lot too. Sean __________________ 2000 2500 Reg. Cab 4x4. Built trans, Twins, Edge drag box, Sticks, Studs, cam, Gauges, etc... 09 2500 6.7L QCLB 4x4, G56, all stock for now.

11-07-2009, 01:44 AM	#19 (permalink)
ShortBedCrew Cummins Nut Join Date: Jan 2007 Location: Nevada Posts: 309 Thanks: 0 Thanked 1 Time in 1 Post ShortBedCrew's Truck Pics	Well crap! I dont have any 181 holders, so im screwed then! __________________ 1981 chevy 1 ton crewcab,shortbed, 95' CTD,HX35/ST50 twins,#100 plate, 15* timing, boost elbow,385 hp injectors, 4" exhaust, BHAF,3K gsk,SB clutch,8" lift,205tcase,4.11s,14r/60f both w/detroits,38"toyo MTs,18x10 chrome.SHES A BEAST!