Diesel Bombers SIGN UP NOW

National Association of Diesel Motorsports
Go Back   Diesel Bombers > Dodge Cummins > 6.7 Liter Dodge Cummins 07.5-UP
Sign in using an external account
Register Forgot Password?
Search


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

6.7 Liter Dodge Cummins 07.5-UP Discussion of 6.7 Liter Dodge Cummins Diesels

Welcome to Diesel Bombers Forums!
Welcome to DieselBombers .com.

You are currently viewing our forums as a guest, which gives you limited access to view most discussions and access our other features. By joining our community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join the Diesel Bombers Forums community today!


Reply
 
 
 
submit to reddit
 
LinkBack Thread Tools Search this Thread
  #1  
Old 07-13-2010, 04:09 PM
brk126's Avatar
Diesel Enthusiast
Status: missing my twins

   
View Member's Albums

Default bad cylinder head casting for early 6.7s

well blew another head gasket the other day....i talked to one of my parts guys and he said he had heard of a bad casting wich made the heads weak in the early stages of the 6.7...was wondering if anyone had heard of this

brk126's Sig:2007 reg. cab long bed 2500 6.7 6spd, XRT PRO ,TS MP8, 5"MBRP, EGR cooler/valve delete, 4"lift, 35x1250x17 cooper discover stt's , stock wheels with 2" spacers, silver phat shaft 66, 50 hp DDP nozzels, ARP 625's, South Bend twin disc, Kelly Fabricating cold air intake
Reply With Quote
  #2  
Old 07-17-2010, 10:17 PM
mikeshauling's Avatar
Diesel Enthusiast

   

Default

Havent heard it, but my HG is blown in my 09.

mikeshauling's Sig:09 QC 4X2 Big Horn DRW SMARTY 19S
Reply With Quote
  #3  
Old 07-29-2010, 01:51 PM
dodgeram082500's Avatar
Diesel Wrench
Status: 6000 pounds and short wheel base thanks Lazarsmith

   
Default

I have heard the whispers in the winds too.

dodgeram082500's Sig:2008 Regular cab 6.7l 4x4 (slightly modified by Lazarsmith)
Reply With Quote
  #4  
Old 08-01-2010, 08:14 PM
300ft.'s Avatar
Diesel Enthusiast
Status: gonna be a daddy in three months

   

Default

aside from extreme boost and drive pressure i dont inderstand how a studded, fire ringed head can pop a gasket...

300ft.'s Sig:07.5 3500 dualie, 6spd manual, afe stage 2, ts mp-8, h&s programmer, dpf delete, mbrp single 6" black mitre cut, south bend double disk!
Reply With Quote
  #5  
Old 08-02-2010, 04:25 PM
brk126's Avatar
Diesel Enthusiast
Status: missing my twins

   
View Member's Albums

Default

yeah i dont understand either?.....ive been looking at this thing alot i have noticed where the coolant overflow goes into the bottle is seperate from the bottle untill it gets to the bottom then it opens into one peice....now when the ruck is cold the rad is full and the bottle is at the right level...after driving the truck the bottle rises maybe and inch but where the overflow tube goes into the bottle there is an air pocket almost to the bottom of the bottle...now the truck will only bubble if that air pocket reaches the bottom oif the bottle it doesent do it all the time tho? now if the truck does bubble....let it cool down and then the airpocket is gone the coolant is sucked back into rad.....rad is full no pressure is built up in the rad and the bottle level is back where it was????? HELP ANYONE

---AutoMerged DoublePost---

truck will hit 55psi on hard pull and right around 60-65 psi drive pressure max

Last edited by brk126; 08-02-2010 at 04:25 PM.. Reason: Automerged Doublepost
Reply With Quote
  #6  
Old 08-03-2010, 02:33 PM
dodgeram082500's Avatar
Diesel Wrench
Status: 6000 pounds and short wheel base thanks Lazarsmith

   
Default

umm..... just a question brk I am sure you have probably already done this ,but have you replace the rad cap/thermostate?
Reply With Quote
  #7  
Old 08-03-2010, 09:49 PM
brk126's Avatar
Diesel Enthusiast
Status: missing my twins

   
View Member's Albums

Default

yeah i have tried both
Reply With Quote
  #8  
Old 08-04-2010, 04:24 AM
need help 6.7's Avatar
Diesel Enthusiast
Status: glad it is pullin season

   
View Member's Albums View Member's FaceBook Profile

Default

i hope not any bad head castings mine has been holding well. Guess i will have to keep my fingers crossed

need help 6.7's Sig:smokin 6.7 s&b cai,pro-flo 5in dpf delete 7in tip,egr delete, incubus 20s with 35 toyo mts
smarty, sbc dd thanks to a little help from some bomber friends
Reply With Quote
  #9  
Old 08-04-2010, 11:02 PM
brk126's Avatar
Diesel Enthusiast
Status: missing my twins

   
View Member's Albums

Default

well how hard do you run yours?.......i beat the living **** out of mine everytime i drive it
Reply With Quote
  #10  
Old 08-06-2010, 06:41 PM
300ft.'s Avatar
Diesel Enthusiast
Status: gonna be a daddy in three months

   

Default

well just got a call from the shop thats studding mine, he sent the head out to have it flux'd and they told him there is at least a dozen hairline cracks in conspicuous places on the head. they have found all of them and none of them seem too threatening. they say that the cracks shouldn't worsen, and that none of which will leak compression, boost, or backpressure. he is going to put the head back on and told me to not be concerned with it. ps the high tensile arp studs are outrageous. over 1000.00 dollars for the studs alone.

oh and the machine shop also told him that my head gasket has been leaking for some time, enough that it actually( no BS) wore grooves in the head almost 4 hundredths deep... also they measured all of the head bolts to find that 6 of them are stretched significantly... yeehah

Last edited by 300ft.; 08-06-2010 at 06:46 PM..
Reply With Quote
 
 
 
submit to reddit
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search


 
All times are GMT -5. The time now is 06:41 PM.

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