Bingo! And when it locks there is no slip... 100% grip, unlike a convertor.
I will be running a lenco setup with a clutch, for obvious reasons.
Buick, you can post the pics of the truck if you like.
First aluminum duramax rod!!
- Thread starter Diesel power
- Start date
Bingo! And when it locks there is no slip... 100% grip, unlike a convertor.
I will be running a lenco setup with a clutch, for obvious reasons.
Buick, you can post the pics of the truck if you like.
I agree with this statement. But this is because they "flex" a little. It is also common for bearings to last longer with Al rods (as long as the big end remains round) but the rods don't last as long. Not trying to flame about flex....just that its the reason they do the above quoted things.....kind of like the difference between firing a pistol with your elbow locked or with it slightly bent
Correct, i used "absorption" instead of "flex"..... but same concept.
Sure I'll discuss it now. What I said was, the reduction in weight would probably have little affect with an 80lb converter. Jog your memory a little?
In an application such as a Banks type truck with a light weight converter or a slipper clutch it is a different story.
of coarse they would work, but what's the point of spending say ten grand on rods and making them work when you can drop 50 times the weight elsewhere. like putting a 38 pound crank in a gass motor that has a 12 inch converter.....makes no sense. you could easly drop 50 pounds by going to a different trans, whay try and save a few if your still spinning all the other crap
Posted via Mobile Device
They are not pics of the Al rods. But I will post them. But they are on my other comp so I will do it tomorrow
The point of the rods some are missing, sure aluminum rods are great but they affect the whole rotation AND recipricating assy in a huge way, your not just loseing rod weight.......as i have said before i netted About 15lbs LESS, the rods only accounted for 1600 grams or so.
15 LBS in a rotating assy is like adding a bigger turbo or a shot of nitrous !!!
Big difference.
The weight is only half the battle too, less harmonics add power, less weight add RPM or "rev gain" with the same or better power!
I thing it's a huge development really, mainly cause this is the heart of the motor, where most of your power loss can be recupped or...........i dont know what to say it's 0400 am here, and im tired
But the point is there is a lot here(HP advantages. ECT) that does not meet the eye.
15 LBS in a rotating assy is like adding a bigger turbo or a shot of nitrous !!!
Big difference.
The weight is only half the battle too, less harmonics add power, less weight add RPM or "rev gain" with the same or better power!
I thing it's a huge development really, mainly cause this is the heart of the motor, where most of your power loss can be recupped or...........i dont know what to say it's 0400 am here, and im tired
But the point is there is a lot here(HP advantages. ECT) that does not meet the eye.
Lunati pro light crank knife edged and all the rod journals are drilled out. Its more like 38lbs, when it was shipped it was around 42 lbs, but there shipped with out knife edging and there was alot taken out for balancing.Have to did the machine shop paper work out.
.
.
The point of the rods some are missing, sure aluminum rods are great but they affect the whole rotation AND recipricating assy in a huge way, your not just loseing rod weight.......as i have said before i netted About 15lbs LESS, the rods only accounted for 1600 grams or so.
15 LBS in a rotating assy is like adding a bigger turbo or a shot of nitrous !!!
Big difference.
The weight is only half the battle too, less harmonics add power, less weight add RPM or "rev gain" with the same or better power!
I thing it's a huge development really, mainly cause this is the heart of the motor, where most of your power loss can be recupped or...........i dont know what to say it's 0400 am here, and im tired
But the point is there is a lot here(HP advantages. ECT) that does not meet the eye.
Couple of questions:
1) With the loss of 15 lbs. in rotating weight, if 1600 grams (about 3.5 pounds) was attributed to the rods, where was the rest of the weight saving at?
2) Harmonics are the "natural frequency" of a system, or the frequency at which a mechanical system wants to naturally vibrate. With these rods installed, what is the natural frequency of the rotating assembly? How does the natural, or resonant, frequency affect the rotating assembly? What is generating these frequencies?
As an example, once resonant frequencies are realized in valve springs, you start to see spring surge. What phenomena do we see in the rotating assembly?
3) How does "no harmonics" add horsepower?
4) You said before that "no harmonics" would make the engine quieter. This assumes that there are resonant frequencies in the audible portion of the spectrum, 20-20,000Hz. The speed of sound is actually faster in aluminum that steel (something like 6400 m/s vs. 6000 m/s). How does aluminum and any associated natural frequency make the engine any quieter than a similar steel rod motor (assuming the same resonant frequency)?
5) I've never seen lighter rods "add" much horsepower, with the exception of overcoming some small inertial losses. The engines definitely rev quicker. They can raise the overall RPM limit. But for a given RPM on a steel rod motor, how will these rods make horsepower?
Thanks.
15lbs cames from, rods, wrist pin, pistons, ring package and the crank bob weight's, there is so much involved but i really dont want to get into great detail. There's a lot of weight in the stock set up, which meant a lot of room for improvement in my mind.
Do you run a engine with out a ballencer? probably not. mainly beacuse it wouldent run to well or for too long right? because harmonics would ruin your engine and it would make less HP in the process.......Same applies here.
Aluminum takes or absorbes impact that steel cant resulting in less stress or strain delivered to the crank and piston, valve train.....ECT resulting in less harmonic and mechanicle distortion. you get my point now?
How does a light rod make more HP, well you answered you own question in your post above......TQ X RPM +HP....need i say more.!
The rods allowed us to Rev gain ALOT faster and allowed us to make other various engine components much better, which resulted in more probable HP.
So since i built the engine around the RODS , yes the rods are going to be the reason or shall i say main contributing factor as to why i make more HP.
If that aint enought explaination, then ask yourself this: why does every top fuel, funny car, and pro mod drag racer use aluminum rods instead of steel?
Answer: because they want every advantage possible, the objective here is to move forward not backwards!
Innovation For the D-max is right here!:cool2: