Diesel Bombers SIGN UP NOW

National Association of Diesel Motorsports
Go Back   Diesel Bombers > Tech Talk > Chevrolet / GMC Diesel Tech Articles > 01-04 Duramax LB7 Tech Articles
Sign in using an external account
Register Forgot Password?
Search
Welcome to Diesel Bombers


Registered Members don't see these ads. Register now it's free!

 
 
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 10-21-2009, 06:51 PM
2500HeavyDuty's Avatar
Super Moderator
Status: Hot pockets?!?! THEY WERE LEAN POCKETS!!

  award
Default LB7 FPRV Shim mod

The lb7 motor as a FPRV just like the lly and lbz motors, except its in a harder to get to location and most of the time its not needed anyway.

The location of the FPRV is located on the fuel junction block in the middle of the valley underneath the metal turbo inlet. The easiest way to get to is it by removing the AC compressor, Thermostat housing and Turbo inlet and you will have a good view of the FPRV.

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.
Attached Images
File Type: jpg DSCF0025.jpg (119.0 KB, 41 views)
File Type: jpg DSCF0030.jpg (53.3 KB, 33 views)
File Type: jpg DSCF0036.jpg (53.6 KB, 33 views)
File Type: jpg DSCF0040.jpg (125.8 KB, 37 views)
File Type: jpg DSCF0043.jpg (131.8 KB, 39 views)
File Type: jpg DSCF0044.jpg (142.9 KB, 43 views)
File Type: jpg DSCF0045.jpg (120.9 KB, 53 views)

2500HeavyDuty's Sig:01' Dmax Ec/Lb: EFI Live tuned by me, Suncoast stage IV, Banks Intake w/ super scoop, 5" exhaust to 6" Stack, Ported intake Horn, Hybrid FPR, Coated CAC pipes, AirDog 150, Gauges, 35's Mounted on H2's lowered. and a Few more mods.
gt42 up the sleeve

06' Jetta TDI: Bone stock 42MPG @ 80mph.

IT LIVES!!!!


VROOOOOOOOM IM A TIRE
  #2  
Old 10-21-2009, 06:57 PM
2500HeavyDuty's Avatar
Super Moderator
Status: Hot pockets?!?! THEY WERE LEAN POCKETS!!

   
Default

In the last Picture you can see the return line Tee and Banjo bolt, the Banjo bolt threads into the FPRV. To remove the FPRV undo the 10mm strap holding it in place and hold the FPRV with a 24mm wrench while removing the banjo bolt in the return line Tee with a 19mm wrench.

Here is a pic of it removed.

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.

Now to Take it apart you will need a 5mm Allen wrench and a vice, or something comparable.

Click the image to open in full size.

Thh contents are spring loaded so be careful when taking the FPRV apart.

Click the image to open in full size.

Click the image to open in full size.
Attached Images
File Type: jpg DSCF0046.jpg (126.9 KB, 23 views)
File Type: jpg DSCF0048.jpg (109.8 KB, 20 views)
File Type: jpg DSCF0050.jpg (121.1 KB, 19 views)
File Type: jpg DSCF0051.jpg (103.4 KB, 21 views)
File Type: jpg DSCF0052.jpg (100.8 KB, 21 views)
File Type: jpg DSCF0053.jpg (90.1 KB, 23 views)
  #3  
Old 10-21-2009, 07:02 PM
2500HeavyDuty's Avatar
Super Moderator
Status: Hot pockets?!?! THEY WERE LEAN POCKETS!!

   
Default

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.

Now What i used to shim them with are two M4 washers i got from ace hardware, they fit perfectly in the cap and they are roughly .030" thick each.

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.
Attached Images
File Type: jpg DSCF0058.jpg (97.4 KB, 15 views)
File Type: jpg DSCF0060.jpg (87.5 KB, 14 views)
File Type: jpg DSCF0061.jpg (139.6 KB, 15 views)
File Type: jpg DSCF0063.jpg (129.4 KB, 22 views)
File Type: jpg DSCF0064.jpg (33.9 KB, 22 views)
File Type: jpg DSCF0065.jpg (92.9 KB, 20 views)
File Type: jpg DSCF0066.jpg (75.4 KB, 19 views)
  #4  
Old 10-21-2009, 07:04 PM
2500HeavyDuty's Avatar
Super Moderator
Status: Hot pockets?!?! THEY WERE LEAN POCKETS!!

   
Default

Reassemble everything back together as in the last pic in the post above.


Click the image to open in full size.

And reinstall the FPRV and get back to driving again.
Attached Images
File Type: jpg DSCF0071.jpg (110.6 KB, 7 views)
  #5  
Old 10-21-2009, 07:14 PM
Jet A Fuel's Avatar
Diesel Wrench

   
View Member's Albums

Default

Nice Write up ! Thanks

Jet A Fuel's Sig:1999 Dodge 3500 Quad cab 2wd NV4500 Manual trans w/ full splined output shaft, RV 275 injectors, AirDog 150, Edge EZ,ValAir Kevlar 13" conversion, Auto Meter gauges,K&N air filter.
Diesel Bombers and MBRP Winner of a drawing for a free 4" Turbo Back Performance Exhaust System. Thanks Bombers.
[SIGPIC][/SIGPIC] Thanks Tony at http://www.mightydiesel.com/
  #6  
Old 11-02-2009, 10:15 PM
Diesel Fan
Status: P101! AHHH

   

Default

what gains dose this give you?
  #7  
Old 11-02-2009, 10:18 PM
FormerVendor
Status: My Customers are #1

Luke Buchanan lukesdiesel
   
Default

  #8  
Old 11-02-2009, 10:27 PM
2500HeavyDuty's Avatar
Super Moderator
Status: Hot pockets?!?! THEY WERE LEAN POCKETS!!

   
Default

Originally Posted by rosscup View Post
what gains dose this give you?

if your FRPV is popping from running high rail pressure adding shims will keep the valve in its seat so it can hold the higher pressure
  #9  
Old 11-02-2009, 10:37 PM
uwyo_dmax's Avatar
Diesel Enthusiast
Status: Saving for a trans

   
View Member's Albums View Member's FaceBook Profile

Default

Thanks Danny Been looking to do this

uwyo_dmax's Sig:
2003 Chevy Duramax LB7
EFILive/DSP5
PPE Boost Valve Modded Airbox 5" Exhaust
SD Intake Horn SD Tierod Sleeves

  #10  
Old 11-02-2009, 10:41 PM
2500HeavyDuty's Avatar
Super Moderator
Status: Hot pockets?!?! THEY WERE LEAN POCKETS!!

   
Default

one tip to get that FPRV out is unbolt the steel return line from the passenger side head and at the steel clamp under the GPCR next the to quick disconnect to give it a little flex so you can unbolt the FPRV easier without seriously bending the steel line.

trust me you want to do that
 
 
 
 


Thread Tools Search this Thread
Search this Thread:

Advanced Search


LinkBacks (?)
LinkBack to this Thread: http://www.dieselbombers.com/01-04-duramax-lb7-tech-articles/34726-lb7-fprv-shim-mod.html
Posted By For Type Date
LB7 FPRV Shim Mod ??? - Duramax Diesels Forum This thread Refback 04-09-2010 09:01 PM
Horsepower estimation - Page 3 - Diesel Place This thread Refback 11-20-2009 06:06 PM
Need a diagnosis - Page 3 - Duramax Diesels Forum This thread Refback 11-16-2009 08:24 PM
Horsepower estimation - Page 2 - Diesel Place This thread Refback 11-04-2009 11:55 AM

 
All times are GMT -5. The time now is 06:57 AM.

Copyright And Legal Notice Links Of Interest

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.5.2
Diesel Bombers ® - All Content Protected Under Intellectual Property Rights Law of Registered Trademarks
Reg. No. 3,494,401 Cls. 100, 101 & 104 Under Int. Cl. 38
USE AT YOUR OWN RISK WE HOLD NO LIABILITY FOR ANY CONTENT RIGHT, WRONG OR INDIFFERENT

Protected by Copyscape Duplicate Content Check


1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233