Hummer H1 to Pseudo M998 Wagon top

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kserumgard
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Re: Hummer H1 to Pseudo M998 Wagon top

Post by kserumgard » Sun Sep 20, 2015 2:41 pm

Thanks.
Last edited by kserumgard on Sun Sep 20, 2015 2:49 pm, edited 1 time in total.
Kirk Serumgard
AT3 US Navy, 1990-1996
1lt US Army 352 CSH, 2009-2012
Hummer H1/HMMWV 1994 6bt cummins conversion

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Re: Hummer H1 to Pseudo M998 Wagon top

Post by kserumgard » Sun Sep 20, 2015 2:48 pm

Thanks. Most importantly you need to have the correct torque converter(correct stall speed, etc.) if you are running the stock 4L80e tranny.
I was farting around with the hummer when I first got it back after the cummins install and I smoked the tranny! I was in limp mode all the way home, about 50 miles at about 35mph.
Eventually, I will install an Allison 6 speed. Two more gears for better highway cruising. It kinda sucks when you are doing 70mph and the engine is turning about 2500-2600 rpm. Overall I love the cummins! Stays nice and cool (185-190 all day long), low maintenance and very east access to whatever engine work that needs to get done.
Kirk Serumgard
AT3 US Navy, 1990-1996
1lt US Army 352 CSH, 2009-2012
Hummer H1/HMMWV 1994 6bt cummins conversion

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Re: Hummer H1 to Pseudo M998 Wagon top

Post by Mrme4u » Wed Oct 21, 2015 1:19 pm

kserumgard wrote:Thanks. Most importantly you need to have the correct torque converter(correct stall speed, etc.) if you are running the stock 4L80e tranny.
I was farting around with the hummer when I first got it back after the cummins install and I smoked the tranny! I was in limp mode all the way home, about 50 miles at about 35mph.
Eventually, I will install an Allison 6 speed. Two more gears for better highway cruising. It kinda sucks when you are doing 70mph and the engine is turning about 2500-2600 rpm. Overall I love the cummins! Stays nice and cool (185-190 all day long), low maintenance and very east access to whatever engine work that needs to get done.
What are the specs of the Cummins engine.
And in which trucks where they installed

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Re: Hummer H1 to Pseudo M998 Wagon top

Post by kserumgard » Wed Oct 21, 2015 6:04 pm

Production Years:
1998 - 2007
Configuration:
Inline 6 cylinder
Displacement:
359 cubic inches, 5.9 liters
Bore x Stroke:
4.02" x 4.72"
Cylinder Head Material:
Cast iron
Engine Block Material:
Cast iron
Firing Order:
1-5-3-6-2-4
Compression Ratio:
16.3:1, 17.2:1 for the High Output model
Injection:
Direct Injection
• 1998.5 - 2002: Electronically controlled Bosch VP44 rotary injection pump
• 2003-2007: Bosch high pressure common rail injection
Aspiration:
Holset turbocharger, intercooled
Valvetrain:
OHV, 4 valves per cylinder, solid lifter camshaft
Valve Lash (Clearance):

Exhaust Valves:
0.020" (must be checked with engine cold)
Intake Valves:
0.010" (must be checked with engine cold)
Weight:
Approx. 1,150 lbs
Oil Capacity:
12 quarts
Governed Speed:
3,200 rpm
Horsepower:
235 - 325 HP @ 2,900 rpm
Torque:
460 - 610 lb-ft @ 1,600 rpm
Kirk Serumgard
AT3 US Navy, 1990-1996
1lt US Army 352 CSH, 2009-2012
Hummer H1/HMMWV 1994 6bt cummins conversion

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Re: Hummer H1 to Pseudo M998 Wagon top

Post by Mrme4u » Wed Oct 21, 2015 7:03 pm

kserumgard wrote:Production Years:
1998 - 2007
Configuration:
Inline 6 cylinder
Displacement:
359 cubic inches, 5.9 liters
Bore x Stroke:
4.02" x 4.72"
Cylinder Head Material:
Cast iron
Engine Block Material:
Cast iron
Firing Order:
1-5-3-6-2-4
Compression Ratio:
16.3:1, 17.2:1 for the High Output model
Injection:
Direct Injection
• 1998.5 - 2002: Electronically controlled Bosch VP44 rotary injection pump
• 2003-2007: Bosch high pressure common rail injection
Aspiration:
Holset turbocharger, intercooled
Valvetrain:
OHV, 4 valves per cylinder, solid lifter camshaft
Valve Lash (Clearance):

Exhaust Valves:
0.020" (must be checked with engine cold)
Intake Valves:
0.010" (must be checked with engine cold)
Weight:
Approx. 1,150 lbs
Oil Capacity:
12 quarts
Governed Speed:
3,200 rpm
Horsepower:
235 - 325 HP @ 2,900 rpm
Torque:
460 - 610 lb-ft @ 1,600 rpm
Impressive numbers... now bring on the Allison 6 speed

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Re: Hummer H1 to Pseudo M998 Wagon top

Post by kserumgard » Fri Oct 30, 2015 6:52 am

Replaced my hood with a civi hood that was in a little better shape than my previous hood. It turned out nice.
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Kirk Serumgard
AT3 US Navy, 1990-1996
1lt US Army 352 CSH, 2009-2012
Hummer H1/HMMWV 1994 6bt cummins conversion

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Re: Hummer H1 to Pseudo M998 Wagon top

Post by kserumgard » Fri Oct 30, 2015 6:55 am

Also installed a hood reinforcement kit and added an IR round light to the drivers side front.
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Kirk Serumgard
AT3 US Navy, 1990-1996
1lt US Army 352 CSH, 2009-2012
Hummer H1/HMMWV 1994 6bt cummins conversion

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Re: Hummer H1 to Pseudo M998 Wagon top

Post by Mrme4u » Sat Oct 31, 2015 11:02 pm

kserumgard wrote:Also installed a hood reinforcement kit and added an IR round light to the drivers side front.
Nice job
But what are the differences between those hoods

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Re: Hummer H1 to Pseudo M998 Wagon top

Post by kserumgard » Sun Nov 01, 2015 12:15 am

The civi hood has a locking latch mechanism and there are additional marker lights underneath the front turn signals.
Kirk Serumgard
AT3 US Navy, 1990-1996
1lt US Army 352 CSH, 2009-2012
Hummer H1/HMMWV 1994 6bt cummins conversion

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Re: Hummer H1 to Pseudo M998 Wagon top

Post by kserumgard » Sun Nov 01, 2015 3:57 am

So the marker lamp under the front turn signal was removed and the mounting hole was filled in. The hood safety brackets were left.
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Kirk Serumgard
AT3 US Navy, 1990-1996
1lt US Army 352 CSH, 2009-2012
Hummer H1/HMMWV 1994 6bt cummins conversion

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Re: Hummer H1 to Pseudo M998 Wagon top

Post by kserumgard » Sun Nov 01, 2015 4:00 am

A better pic of the hole.
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Kirk Serumgard
AT3 US Navy, 1990-1996
1lt US Army 352 CSH, 2009-2012
Hummer H1/HMMWV 1994 6bt cummins conversion

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kserumgard
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Re: Hummer H1 to Pseudo M998 Wagon top

Post by kserumgard » Sun Nov 01, 2015 4:12 am

What it looks like now.
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Kirk Serumgard
AT3 US Navy, 1990-1996
1lt US Army 352 CSH, 2009-2012
Hummer H1/HMMWV 1994 6bt cummins conversion

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kserumgard
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Re: Hummer H1 to Pseudo M998 Wagon top

Post by kserumgard » Mon Sep 19, 2016 5:45 pm

Started to remove the old residual adhesive left over from the interior roof insulation. What a pain but necessary!
I used WD40 and a razor blade.
Kirk Serumgard
AT3 US Navy, 1990-1996
1lt US Army 352 CSH, 2009-2012
Hummer H1/HMMWV 1994 6bt cummins conversion

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kserumgard
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Re: Hummer H1 to Pseudo M998 Wagon top

Post by kserumgard » Mon Sep 19, 2016 5:47 pm

Here are a couple of pics
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Kirk Serumgard
AT3 US Navy, 1990-1996
1lt US Army 352 CSH, 2009-2012
Hummer H1/HMMWV 1994 6bt cummins conversion

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kserumgard
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Re: Hummer H1 to Pseudo M998 Wagon top

Post by kserumgard » Tue Sep 20, 2016 10:29 am

Here is a pic of the adhesive from just 1/4 of the roof.
It's much cleaner, at least now I can install some new roof insulation.
I was thinking about putting some dynamat first then the roof insulation on top of the dynamat.
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Kirk Serumgard
AT3 US Navy, 1990-1996
1lt US Army 352 CSH, 2009-2012
Hummer H1/HMMWV 1994 6bt cummins conversion

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