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Old 12-09-2017, 08:15 AM   #1 (permalink)
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Join Date: Dec 2014
Location: Butte, Montana
Posts: 725

little jona - '91 Dodge D 250 first gen cummins LE
Team Streamliner
90 day: 23.4 mpg (US)

Little Jona airo modded - '91 Dodge RAM 3/4 TON D 250 24 AUTO
Team Cummins
90 day: 18.5 mpg (US)

The Salted Hound Jenny. - '87 Dodge Ram 50/D-50 5sp 4X4
90 day: 20.24 mpg (US)

Jona Allison aero - '91 Dodge Ram D-250 Le
90 day: 20.76 mpg (US)
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Thanked 425 Times in 276 Posts
Down the rabbit hole Ram D50 2.6l long block

Thought I blew a head gasket or cracked a head. I have aproxamitly 1qt of oil in my coolent, but no oil in water? I did a compression test 1-4 dry 175, 165 ,110, 100, this is too wide a spread . 1-4 wet 135,135,135,110 , this is more like it. This is my first wet dry comparison . I thought the numbers were only suposed to go up? By a lot as in 3 for bad rings. With each compression stroke on 2and 3 the water /oil mix pulsed out a cupple Oz each time. 1and 4 no such pulse just jiggle from cranking.
I have a recently acquired 87 Ram D50 2.6 Smog. Mt 4x4. Has new radator and water pump. Pulled the head assumeing blowen gasket. I see some strange markes in 2, 3
Markes at 9 and 7.

(cant see 1,4 on tdc) they look like lightning bolts going partway down the cylinders a frend has some " spot check" penetrating die test. RED LINE NEXT TO the squiggle is the crack. Ding dong the witch is dead . Not worth sleeving +compleet rebuild+ new /reman head. Sleebe + head => long block.

Theas vertical scoring(deep enough to catch a fingernail) weren't cracks ,however there was a crack in #2 adjacent to the score mark.

I had planed a weber swap. Thats happening as well as a long block .
I would realy like to know what happened.

All freeze/ soft plugs are in place and old. Truck had a bad thermastat
stuck 3/8" open

had to block 1/2 the radator to keep it at the 2nd mark on the stock gage. 95% blocked @+20f =middle of the gage. For the madin voyage 405mi home with my new winter rig. Then dorve to portland, Oregon and 3 days later it wets the bed. Oily water on the driveway. I wanted to have more than 5 tank base line before modds(3 with liget thermastat) . But life is.

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1st gen cummins 91.5 dodge d250 ,HX35W/12/6 QSV
ehxsost manafulld wrap, Aero Tonto
best tank: distance 649gps mi 24.04 mpg 27.011usg
Best mpg : 31.32mpg 100mi 3.193 USG 5/2/20

'83 GMC S-15 Jimmy 2door 2wd O/D auto 3.73R&P
'79 Chevy K20 4X4 350ci 400hp msd custom th400 /np205. 7.5-new 14mpg modded befor modding was a thing
87' Hyundai Excel
83 ranger w/87 2.9 L FI2wd auto 18mpg on the floor
04 Mitsubishi Gallant 2.4L auto 26mpg
06 Subaru Forrester XT(WRX PACKAGE) MT AWD Turbocharged 18 plying dirty best of 26mpg@70mph
95Chevy Blazer 4x4 auto 14-18mpg
04 Chevy Blazer 4x4 auto 16-22mpg

Last edited by gumby79; 12-09-2017 at 05:47 PM.. Reason: Add notation
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