Well, finally registered her and drove her for my first time...

[I've been away a while... New house and moving and building up my new office and such. My apologies.]

6.2 liter, M1025. 1987

Engine runs smoooooth (for a Diesel). Starts super quick and smooth at 50 degrees F.

What a kick in the pants around town but SLOW to accelerate. I got a TESLA X P100D and a Tesla Roadster so I'm spoiled for speed. LOL

I really can't get the vehicle over 45, so I need to check the three speed tranny I guess. I'm considering upgrade to a 700R4 diesel truck tranny in the future. I don't want the electric shift M998 4 speed.)

Stops on a freakin' dime. E-brake needs adjustment BUT I bought tire chocks so I won't roll down-hill when parked. Lights and directional signals work! Woo Hoo!.

Gonna buy wheel balancers although she is not too bad. http://www.centramatic.com/wheel-balancer.rhtml?modelNumber=370-800

Gotta coat wheel studs in anti seize and oil as I live by the Atlantic Ocean on the beach.

LOUD, many rattles, and the looks when I drive by are fun.

Needs tie rod ends and ball joints so my mechanic (a close friend) bought some.

Power steering hoses leak. Not hard to remedy that.

I have a Red Dot A/C to install. No rush now that Fall is here. I have the evaporator for under the rear wheel well so I can avoid installing to the rear sponsons/hatch.

I have to replace door and rear hatch weather stripping, and I will fabricate custom turret cover to keep rain out.

I will have all fluids replaced this week... Engine, turbo hydro 400, pumpkins, brake fluid, rad fluid, as well as rotate tires and such. windshield leaks so I will fabricate some sort of flexible plastic upper edge cover. Driver's side windshield wiper is loose so I assume stripped, and I will pull and see if it needs replacement or if a few well aimed TIG Weld droplets and a round file will be able to cure.

I need to see if I am local parkway legal because no rear window/windshield . I don't wanna cut my sponsons and rear hatch. I have 2 rear doors with windows so I might be OK. I might just "install" tinted plastic "window" to the sheet steel without cutting holes, and instead run a rear camera.

Gonna upgrade to dual voltage alternator, (already got it in storage along with the wiring harness). Gonna swap in LED lights and such AFTER current lights fail ( I own a full set BUT I ain't fixin what ain't broke).

I gotta surprise regarding turbo to the 6.2, but ya'll need to stand by.

A company in Cali. says they routinely get the MV40 trannies with 6.2 liter engines to 75MPH... Anyone know how they do it without over-revving the engine and turning the diesel into a paperweight? My Pontiac Bonneville's were 6K lb and moved over 100MPH, but they were gasoline engines.

[PIC below posted previously]

A P P L A U S E !!!

MV40 trannies......What The....

86 I don’t understand your comment. Turbo hydro 400 is MV40, at least according to my old GM technical manuals

Just call it a turbo 400 like the rest of America..

There's no way a stock turbo 400 is going to get to 75... Not enough gearing.

If you want to fix up your hmmwv right, there's a shop in California that will do a proper mil spec 4 speed conversion. Might have to sell one of your Telsa's though....

I almost wanna throw in a five speed. LOL

Why stop at 5 privvit?

TOBASH said:

[I've been away a while... New house and moving and building up my new office and such. My apologies.]

6.2 liter, M1025. 1987


1......I really can't get the vehicle over 45, so I need to check the three speed tranny I guess. I'm considering upgrade to a 700R4 diesel truck tranny in the future. I don't want the electric shift M998 4 speed.)

2.....Gonna buy wheel balancers although she is not too bad.

3.....Gotta coat wheel studs in anti seize and oil as I live by the Atlantic Ocean on the beach.

4.....LOUD, many rattles, and the looks when I drive by are fun.

5.....Needs tie rod ends and ball joints so my mechanic (a close friend) bought some.

6.....Power steering hoses leak. Not hard to remedy that.

7.....I have a Red Dot A/C to install. No rush now that Fall is here. I have the evaporator for under the rear wheel well so I can avoid installing to the rear sponsons/hatch.

8.....I have to replace door and rear hatch weather stripping, and I will fabricate custom turret cover to keep rain out.

9.....I will have all fluids replaced this week... Engine, turbo hydro 400, pumpkins, brake fluid, rad fluid, as well as rotate tires and such. windshield leaks so I will fabricate some sort of flexible plastic upper edge cover. Driver's side windshield wiper is loose so I assume stripped, and I will pull and see if it needs replacement or if a few well aimed TIG Weld droplets and a round file will be able to cure.

10.....I need to see if I am local parkway legal because no rear window/windshield . I don't wanna cut my sponsons and rear hatch. I have 2 rear doors with windows so I might be OK. I might just "install" tinted plastic "window" to the sheet steel without cutting holes, and instead run a rear camera.

11.....Gonna upgrade to dual voltage alternator, (already got it in storage along with the wiring harness).

12.....A company in Cali. says they routinely get the MV40 trannies with 6.2 liter engines to 75MPH... Anyone know how they do it without over-revving the engine and turning the diesel into a paperweight? My Pontiac Bonneville's were 6K lb and moved over 100MPH, but they were gasoline engines.

Click to expand...

1.....Why not fix the problem before swapping the trans. You may be fine with it working properly.

2.....Have you had the tires balanced?

3.....I don't want to be around when your wheels fall off.

4.....Tighten the shackle bolts or remove the shackles.

5.....Why didn't you buy them?

6.....Don't use power steering fluid.

7.....You may want to put the evaporator inside the cabin if you want to cool down.

8.....LOL! It will leak. So will the fake window.

9.....Remove the glass and install it with new sealant. Don't put an adhesive bandage on it.

10.....A fake window? Utility vans and semis do not have rear view. This is a class 3 truck.

11.....Does the 200amp require a special harness?

12.....LOLOL.

I have had my 1988 M998 6.5/TH400 to 73mph once (proven by GPS Speedo app on my phone) but was once, def. not a "crusing" speed.
Your best bet for ease of install and headaches is the 700 swap.
My ..

In reply to ACTION:


1.....Why not fix the problem before swapping the trans. You may be fine with it working properly.

Because I'm looking for overdrive.

2.....Have you had the tires balanced?

They are in the process today. Still, I will buy the autoballancing devices.

3.....I don't want to be around when your wheels fall off.

Your concern is misguided. In salt water areas this is a common AND SAFE practice.

4.....Tighten the shackle bolts or remove the shackles.

Agreed.

5.....Why didn't you buy them?

As mentioned, my close friend is a mechanic. He wanted to repay a favor and buy and install them for me so I really couldn't say no without insulting him.

6.....Don't use power steering fluid.

I was referring to replacing the hoses, not continually replacing fluid.

7.....You may want to put the evaporator inside the cabin if you want to cool down.

I miss-spoke.

8.....LOL! It will leak. So will the fake window.

No, it wont. A fake window requires no hole...just a dark plexiglass mounted onto the metal.

9.....Remove the glass and install it with new sealant. Don't put an adhesive bandage on it.

Leak is b/t top and frame, not window.

10.....A fake window? Utility vans and semis do not have rear view. This is a class 3 truck.

On parkways in NYS the liberal idiot politicians want vehicles with rear windows. Cannot argue with them. This truck is titled as a personal use vehicle SO I can use the parkway IF I have windows. (Look up "Belt Parkway in New York City to confirm if U R curious. Commercial vehicles ARE FORBIDDEN from driving the Belt Parkway. The overpasses were actually intentionally designed low by Jacob Riis, so tractor trailers will hit them.)

11.....Does the 200amp require a special harness?

Yes... and I already bought one.

12.....LOLOL

Yeah, but that is why I asked. Seemed a bit implausible.

THANK YOU FOR YOUR RESPONSE.

TOBASH

There is a seal on the top of the w/s frame. It may be falling apart.
5581366 is under the c channel. Worth a look if you ever have the top off. Also the ones under the w/s frame.

Why did you buy a slant back if you needed a rear window?

Mind as well sell it and get the two door version, or 4 door that ain't a slant back...

tage said:

Why did you buy a slant back if you needed a rear window?

Might as well sell it and get the two door version, or 4 door that ain't a slant back...

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I bought a slantback 'cause I want a slantback. Nothing more iconic than the slantback, except maybe a Conestoga wagon.

There are remedies for the parkway, as mentioned above.

Congratulations man, great feeling to be driving it, right? You and I are at a similar speed handicap, but I'm already chasing down the issue in my truck and at least know which component isn't working correctly (TCM), just need to find the root cause before I go buying more parts.

Wire Fox said:

Congratulations man, great feeling to be driving it, right? You and I are at a similar speed handicap, but I'm already chasing down the issue in my truck and at least know which component isn't working correctly (TCM), just need to find the root cause before I go buying more parts.

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You're only 18 hours away. Drive her here and we can fix 'em both. LOL. You AND all the guys online are welcome to visit me in Queens, NY. (Just not all at once... Parking might be an issue. )

I gotta say the thing is a blast. Loud, oversized, and yet stops on a dime! Yeah, AWESOME to drive!

Welcome to the rolling madness, Doc! Congrads, have fun, and looking great. Now I know I am an exception but my rig with the 6.2 and stock 3 spd turbo 400 does 70 miles down the interstate all day long and it does not mind.

juanprado said:

Welcome to the rolling madness, Doc! Congrads, have fun, and looking great. Now I know I am an exception but my rig with the 6.2 and stock 3 spd turbo 400 does 70 miles down the interstate all day long and it does not mind.

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Been a while since we spoke. I hope all is well.

I look forward to driving to the big easy to finally meet you some day soon!

I bet you have the taller differential gearing. Either that or you're running 45" tires. LOL

T

Nice!

Been driving her and under 30 I'm ok but over thirty and on bumpy roads she is a bronking buck. I have yet to install the Centromatics.

Tie rod ends and ball joints all have play and need replacement. Not sure yet about shocks, but they seem ok when I apply weight and let off . ( ie.: She does not bounce).

Got me thinking, what were the H1 civilian suspension mods [if any] that allow these units to drive over 70?