Diesel Bombers SIGN UP NOW

National Association of Diesel Motorsports
Go Back   Diesel Bombers > Dodge Cummins > 12 Valve 2nd Gen Dodge Cummins 94-98
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!

12 Valve 2nd Gen Dodge Cummins 94-98 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps

Reply
 
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 02-02-2013, 02:29 AM
Diesel Fan
Status: Learning

   

Default Help adjusting 3k GSK

Hi all,
I just finished installing a 3/4k GSK kit from pacbrake. I installed it as a 3k kit with the inside spring left out.

I measured my stock spring tension-distance and set the new to the same with 0.075".
After install idle was very high, ~1200RPM. I went back in and loosened them about 3/4turn, now idle is down to ~1000RPM free and 800RPM in park, this is still a lot higher than it used to be.

I figure that I need to just go back in and loosen them up some more. Also driving does not feel improved at all. I have less power and can not notice if there is any RPM difference. I used to see ~19PSI WOT @2000RPM and now I see barely 15.

Note: to install I went through the top of the AFC housing. I marked position for the plate and everything is reinstalled as close as possible to the original.

Is there a trick or something I am missing? My first impressions with a 3k GSK are not very good compared to stocker.
Thoughts?

*Edit*
Stock there were 4 governor springs. I removed the 3 smallest springs and their respective seats. I was not able to find any shims on either side for the small springs. There were shims for the larger springs, but the instructions said not to remove those. I reinstalled 2 new springs and the new seats.

The_Master's Sig:Stock 1996 12 Valve Automatic 2WD, 4" Turbo-back, Crew Cab, Long Bed, KDP:Tabbed EGT, BOOST, TransTemp. Capped Boost Line.

Last edited by The_Master; 02-02-2013 at 03:00 AM..
Reply With Quote
  #2  
Old 02-02-2013, 11:02 AM
turbo2332's Avatar
Diesel Bomber

aint got one aint got one aint got one never played does the original PS have this option? isnt this a money order thing?
   
Default

sounds like you might have already had a gov spring kit in there. tighten them back down about 5 clicks per side and adjust the idle down via the idle adjustment screw on the back of the pump.
Reply With Quote
  #3  
Old 02-02-2013, 04:39 PM
Diesel Fan
Status: Learning

   

Default

How do I know if I had a governor spring kit installed?

My power seemed to top off @ about 2200 RPM before. I could free rev it a little higher, but I was never able to get much power above that. I was hoping to just prolong the power curve through ~2800RPM before the governor started defueling..

---AutoMerged DoublePost---

Ok, so I adjusted the idle screw and now the idle is proper, about 750 in park.

I tried sliding the AFC housing full forward and I did not like the outcome. I tried sliding it full aft and everything seems much better. However, max boost seems to be ~15PSI (boot fitting capped shut) and no smoke (very clean). I then adjusted the star wheel to full forward to attempt to build more boost and it *may* have helped a little but the difference is not that noticeable. The truck drives fine now, but seems to have a little more power down low and a little less in the top end (15PSI vs 19PSI). I still need to play with the smoke screw a little to limit the pre-boost fuel, but that is also accomplished with one's foot for the time being.

I am a little confused.
What is the adjustment to build more boost/fuel-more in the higher RPM's?

*edit* the GSK kit seems to let it free-rev up through 3k without issues, but I have not pushed it more than that without valve springs.

Last edited by The_Master; 02-02-2013 at 04:42 PM.. Reason: Automerged Doublepost
Reply With Quote
  #4  
Old 03-03-2013, 10:26 PM
Diesel Fan
Status: Learning

   

Default

Ok Everyone, Just to wrap this thread up. I loosened the GSK spring tension a little and then adjusted the idle screw down to about 750RPM an everything is running great.
I also adjusted the AFC & moved the torque plate & AFC housing forward.

The only problem is I can slip the torque converter now, so I have to use a little right foot control.
Reply With Quote
 
 
 
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search


 
All times are GMT -5. The time now is 12:35 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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581