Not just V-6s but V-8s to some extent also.

My 6.0 furd-drivin' buddy sent me a link to an aftermarket harmonic balancer he was thinking of getting for his truck and asked if I was interested too. I took great pleasure in educating him to the fact that the company doesn't sell one for my truck BECAUSE AN I6 DOESN'T NEED IT.

 

A vee engine is neither smoother nor quieter---not inherently, anyway.

It's all about the packaging. An inline is just too long in many cases, and Americans love their Vee engines.

 

[QUOTE=96_12V;2091899]You can always counter-weight a V6 or v8 crank to smooth it out. How are gas V6's so smooth?



The crank is not the problem. All crankshafts are counterbalanced and are staticly balanced. A 60 degree V6 is mechanically unbalanced because of the relationship between the cylinder banks (not 90 degrees). The 90 degree V6 is better mechanically but fires unevenly, so it's buzzy. Balance shafts can make them smooth (like the Ford 3.8 gasser) but it's more flailing machinery just to compensate for a design problem and it robs power. Another trick is too offset the adjacent rod journals, but it doesn't seem to solve the problem completely. After all that you still have twice as many cylinder heads and twice as many exhaust manifolds as an inline with the same number of cylinders.

I've had three different V sixes (Chevy, Dodge, and Ford) and they were all problem engines. Transvers mounted V6s are really a disaster area.

John

 

The 4bt is heavy for its displacement and it's not very smooth at idle because it's such a big 4 cylinder. A smoother running V-6 or V-8 will be more marketable to the average consumer even though diesel nuts like us would rather have the overbuilt 4BT.

 

[QUOTE=Raspy;2092740]Maybe one like this would be better, see below for a diesel V6 in prduction. for a gas V6 try driving a Nissan with the VQ series engine, it's brilliant...

http://www.youtube.com/watch?v=-nJ3TITlJoA

 

You were educating someone? I bet this is the link he sent: http://www.fluidampr.com/DOWNLOADS/CATALOG/DIESEL.pdf

It's always a good idea to smooth out engine harmonics, no matter what your configuration; especially when adding aftermarket power adders. The cummins models are larger and heavier than your 6.0 furd.

 

The "balancer" isn't there for balance-- it's just sometimes used for that in lieu of other balancing options. It's a DAMPER (hence the name in Fluidampr). It's there to dampen torsional vibrations-- primarily in the crankshaft as it flexes then unflexes due to the combustion events.

Even a "balanced" I6 will have a damper because the crank won't last long without one.

jh

 

Not always. The Nissan Diesel SD33T in my IH Scout II does not have anything up front except for a pulley. The engine is very reliable but it severely lacks any power--which is why it doesn't need a crankshaft damper.

 

OK, sorry for maxing out everyone's B.S. meters, I was just comparing how when I was towing a four place snowmobile trailer, my friends in the back seat can't hear the conversation in the front but in my friends duramax you can barely hear the engine. The duramax is totally stock and is an 06 and my Cummins is an 03 with an intake and exhaust so that probably has a lot to do with it.

 

the 2003 5.9L was built to meet the emissions till 2012, but californa changes there emissons every year. Thats why we now have a 6.7L cummins.

 

Don't worry, we're all here to learn more anyway. Besides, the same poster who used his BS meter on you, sent my BS meter through the roof! He's since been educated.

 

Ummm, no.

The 6.7 was the first engine to meet 2010 truck emissions standards for all 50 states...not just CA.

 

Yep - what he said. Here's more info, and recall that these are easy standars to meet compared to Tier IV.

http://wasteage.com/mag/waste_truck_engine_emissions/

 

Bingo!

I know its hard to understand for us enthusiasts...but we represent such a SMALL portion of the consumer base that dodge (or gm or ford) is trying to sell trucks to. For every knowledgable diesel enthusiast that truely appreciates the significance of the cummis, allison, solid front axle, whatever, there are a thousand other people who just want the truck to tow their big trailer and not have to think anything else of it.

I just roll my eyes when I see people on forums say "well dang why doesnt dodge run a 10 speed road ranger, that would be awesome and would sell like hot cakes!" or "why doesnt GM offer two option packages, solid front axle, and IFS, then people could choose which one they want and it would make the GM pickups much more popular" or "Ford should offer the DT466 in the F-350's, that would be awesome, it would sell soooo well!"


its about the masses and sales numbers, its not about "us"

ben

 

Thankyou.

Why is this so hard to understand?