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Truck pulls?

Not Yet :Justwait2:


Maybe when the new 1/2 ton diesels come out and I'm feeling destructive and need a new engine project ):h

With the propane and water the truck really does have some good power though.
 
A local guy pulled with his 6.5 at our pull last year. Did ok, defiantly wasn't a fast pace pull...:D
 
I could always find one and say I have a 6.5:Justwait2:, don't think my tie rods would take it though:eek:.
 
18K rolling loads, not exactly a pull, those sled pulls are hard on a driveline, it could be done but you would need to prep the truck for it and settle for best of what could be met with a IDI 6.5 and not really competeing against anyone but yourself as the other Diesels start in power band where we finish on a stout build for most guys, unless doing some radical for the 6.5 stuff
 
Turbine Doc said:
18K rolling loads, not exactly a pull, those sled pulls are hard on a driveline, it could be done but you would need to prep the truck for it and settle for best of what could be met with a IDI 6.5 and not really competeing against anyone but yourself as the other Diesels start in power band where we finish on a stout build for most guys, unless doing some radical for the 6.5 stuff
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Turbine, maybe you of anyone could explain succinctly (i.e. bullet points) why there is such a demonstrable difference between similar displacement engines such as a 6.5 TD and a 6.6 DMAX? I for one would like to know.

Steve
 
Direct injecton on 6.6 fuel sprayed direct into cylinder on top of piston, vs indirect on 6.5 fuel sprayed into precombustion chamber

more fuel available on 6.6 common rail 22K psi, vs 2200 psi on 6.5 thru a distributed fuel via electro-mechanical injection pump

better turbo on 6.6, intercooing by design on 6.6 vs aftermarket add on for 6.5 with the more restrictive turbo

head clamping arrangement better on the 6.6 capable of higher cylinder pressures, better heat rejection 6.6, more Hp available on 6.6 with just a programming change.

Are the high level bullet points.

detractors 6.6 is expensive to buy & maintain, early ones did have some design problems with injection & cooling, later ones have DPF & emissions junk that drop mpg to 10-14 and not easily bypassed.

many uneducated to 6.5 potential talk junk about them keeping their price low and used parts are readily available, common with military trucks so some surplus parts to be had and still an active military production line is out there for new parts

6.5s will never top a maxxed out modern Diesel cummins-stroke-max but properly build are an economical way to get a stout Diesel that will meet most folks needs
 
Well it starts with:

1. Available fuel, DS-4 has a limit short of 100 mm^3 of fuel all maxed out... a CP3 pumped common rail can flow a buttload more fuel into the cylinders.

2. Direct injection, always been more powerful and with common-rail its much more efficient.

3. Ability of the block to handle the power, the 6.6 Duramax block is significantly more stout than the 6.5 block, no if, ands, or buts about it. From the crank to the pistons to the heads and the head bolts, the 6.6's are just plain tougher.


On edit, TD beat me :(
 
I pulled once years ago. it started raining and they let anyone pull. there where F150s pulling. I dont know how ar but I did ok with 6 BFG mudders. I didnt stop until I dug in a foot :D
ahhh back before responsibilities
 
Agree w/ TD's points as factors, but I would boil it down to structural integrity limits. The engines more commonly successful in pulling have a good deal more "headroom" designed into their fundamental structure. At their OEM/stock power levels, they're operating farther below their structural limits.

The IDI efficiency difference, OEM inj pump fueling limits, 2 valve - vs 4, etc., play into it; but there were a few IDI Ford/IH 6.9 & 7.3 that found ways to make at least 2x stock power levels. Their original technology was limited similar to the 6.5, but came with a bit tougher foundation.

Then compare the reliability (from catastrophic failure) of the same vintage 12v 5.9's modified & making 2x or 3x (or more) their OEM power levels.

Not knocking the 6.5, I bought & built one for the value/$. And I appreciate the folks that continue efforts pushing the 6.5 envelope. Just don't want to be the one personally paying for the breakage costs usually involved in finding the limits.
 
540s10 said:
Anyone do any sled pulling with their 6.5 ?
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Last year there was a 6.5 at the fair that pulled....he got stomped on pretty bad because they threw him in with the rest of the diesels.

But it really wasn't that bad, considering it was a 1/2 with nothing but a cold air intake, and 4" exhaust. IIRC he made it about 230 feet.
 
Gearing makes a pretty big difference too. head in there with 6:1 gears and some serious mudding tires and you may be able to battle with the best of them. even with a poorly powered 6.5. Lockers up front and in back to keep EVERYTHING spinning. Of course that much torque to the ground like was already mentioned, would wreck havoc on the driveline. I wouldn't run that much power without at least a soild front axle... oh wait, I'm almost there anyway :D:D:D
 
I have done plenty of them with my 98 with no issues. I always did well compared to other stock diesel trucks. I think with the att it would do better as your pulling in 4lo and running in the top rpm's when your pulling.
Unless the track is loose dirt or mud an all terrain tire does well.
I have yet to do one since my solid axle swap but i don't think that alone would make a difference, my air locker will though.
 
Joey D said:
I have done plenty of them with my 98 with no issues. I always did well compared to other stock diesel trucks. I think with the att it would do better as your pulling in 4lo and running in the top rpm's when your pulling.
Unless the track is loose dirt or mud an all terrain tire does well.
I have yet to do one since my solid axle swap but i don't think that alone would make a difference, my air locker will though.
Click to expand...

Well hey there Joey glad to see you over here as well:thumbsup:
 
I have been here a bit, I do use the place as they have a VAN SECTION:D
 
iv wanted to pull the last two years at our local fair but a lack of another vehical has shut me down each time i can afford not bein able to get to work
worst of it is iv always had 2 trucks one just always seems to be broke down
 
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