6.5 vs 6.5td worth it?

[vtach]

Looking at getting another HMMWV. One has the 6.5, the other 6.5 turbo. Is there much to gained with the turbo vs all the extra parts/potential things that could
go wrong?

I’m looking for some thoughts from members here.

 

[Coug]

depends on which version of truck with the turbo. Post 300000 serial numbers have the sheppard steering box and geared fan drive that are difficult/expensive to repair. Before that I don't think there is a huge difference between most of the truck.

I've got a 6.5 non turbo, and it does good enough for most stuff, but if given the choice I'd probably have a turbo truck just for the extra power and driving at altitude has less power derating.

 

[Gcelevator]

I am running the turbo in the 1123 and it runs good. My friends with no turbo say it moves faster and better. Honestly i don't see much difference as they claim but they swear to it.

 

[HoveringHMMWV]

In my opinion, the biggest advantage is in the factory air conditioning with a turbo truck.
If I had found an excellent condition older model truck with Red Dot a/c and 6.5L NA GEP, then I would’ve also been happy.
YMMV

 

[Hummer Guy]

I am running the turbo in the 1123 and it runs good. My friends with no turbo say it moves faster and better. Honestly i don't see much difference as they claim but they swear to it.

Are you running the BMI Commander turbo?

 

[Gcelevator]

Are you running the BMI Commander turbo?

No, i am running a GEP turbo engine. It was rebuilt from 0.

 

[hrbergeron]

Get the 6.5TD. I've done several motor swaps in these HMMWVs and it doesn't add much parts to break.

 

[Retiredwarhorses]

An ECV and REV is hands down a better all around truck…

 

[HUMMER H1]

Here is my experience,

I have 1985 humvee with H1 turbo motor and 256 gears
I have M1123 without a turbo and 273 gears
I have ECV turbo with 308 gears

so far best all around performance is from non turbo M1123,

ECV is very fast up to 40 mph, then gears that give her that fast take off start to hurt her higher speed performance,

the 1985 humvee with h1 motor is slower than M1123 but on the highway it’s much easier, less RPM less noise,

M1123 is a sweet spot, it takes off fast and keeps RPM low enough to go over 60.

 

[HUMMER H1]

Also
When you open the hood of the ECV with its 400 amp generator, and the AC, it’s as busy and crowded as any modern German car,

open the hood of non turbo humvee and you see everything in front of you, I love that simplicity.

 

[Hummer Guy]

Here is my experience,

I have 1985 humvee with H1 turbo motor and 256 gears
I have M1123 without a turbo and 273 gears
I have ECV turbo with 308 gears

so far best all around performance is from non turbo M1123,

ECV is very fast up to 40 mph, then gears that give her that fast take off start to hurt her higher speed performance,

the 1985 humvee with h1 motor is slower than M1123 but on the highway it’s much easier, less RPM less noise,

M1123 is a sweet spot, it takes off fast and keeps RPM low enough to go over 60.

This is pretty interesting, makes me wonder how much better it'll be with the BMI turbo