Don't Fear Teh Gear!!!

helty said:
here.

http://www.youtube.com/watch?v=0lccqtF15Gc

80mph @ 2700

75mph @ 2500

70mph @ 2400

65mph @ 2200

If you have to cruise faster than 80mph, thats your problem.


damn so that's my problem i need therapy since i cant keep my foot out of the go fast pedal :( :jester:

you couldve turn the music down to hear the exhaust, you kids and your music now a days i tell you :rolleyes:
 
5spd GT said:
Mossberg - What is your daily driver? Does it have the same type valvetrain? Same weight in the rotating assembly? Same ring material? Same rod ratio? Same powerband?

So give us the math...instead of saying "about"...give us "exact."

I personally wouldn't want my car cruising at half it's rpm capabilities, just at cruise.
It's in my sig. Just in case you have sigs turned off. It's a 2000 Ford Contour V6 5 speed manual. It is 2.5l displacement. Redline is higher than the Stang at 6800 rpm. But it cruises at 75 mph turning 3000rpm stock in 5th gear.
 
Mossberg said:
Also, My daily driver tachs about 3000rpm at 75mph in 5th gear from the factory with no problems, so why is it an issue for a mustang engine to be at 3000rpm at 90 mph?

well, our stangs redline at 5800... most other cars redline higher... so driving anywhere above 2400 is excessivley wearing on the car... its not like driving an S2000 that redlines at 8-9k.... of course 3k rpms is not bad then... but we ave stangs that redline under 6k... think about that

i have 3.90's and i do highway everyday all day and its not fun to hear your car whining so high... i cant even imagine 4.10's
 
Mossberg said:
It's in my sig. Just in case you have sigs turned off. It's a 2000 Ford Contour V6 5 speed manual. It is 2.5l displacement. Redline is higher than the Stang at 6800 rpm. But it cruises at 75 mph turning 3000rpm stock in 5th gear.

So answer my questions about the rotating weight, powerband, ring composition, etc......

Also on the gas mileage idea of "get a honda if you don't like the gas mileage you get with your stang"...or "why did you get a stang?"

It is better to get 20mpg than 2mpg. Especially if you drive it everyday.
 
03ghoststang said:
you couldve turn the music down to hear the exhaust, you kids and your music now a days i tell you :rolleyes:
tomorrow bud, on my way to work I'll turn down the Metallica and make a vid while cruising between 60-80mph, different rpms and all. Just for you old farts :p
 
helty said:
tomorrow bud, on my way to work I'll turn down the Metallica and make a vid while cruising between 60-80mph, different rpms and all. Just for you old farts :p


:lol: :lol: i just put that cause my uncle told me the same thing when i had metallica(oooh and i remember the song to it was master of puppets) on a few weeks ago, and cruising around that speed but he said it in spanish so it sounded even meaner :(... then i just put the go fast pedal to the floor it and it shut him up :D......


:eek: your calling me old :(
 
BLUE03GT said:
well, our stangs redline at 5800... most other cars redline higher... so driving anywhere above 2400 is excessivley wearing on the car... its not like driving an S2000 that redlines at 8-9k.... of course 3k rpms is not bad then... but we ave stangs that redline under 6k... think about that

sounds like a bunch of guesswork.

just cause youre cruising at half the redline, does not mean youre putting abnormal amounts of wear on the motor. the 4.6 is pretty fine tuned, and can handle more rpm's than people give them. its not like youre going to shorten the motors lifespan by running 500rpm higher than it used to. engines cruising at higher rpm's work less hard due to them being higher in their powerband, as compared to bogging down a motor and working it under its powerband.

just think of it this way. how much throttle input do you need to cruise at 80mph with 4.1's as compared to 80mph with stockers? your foot will be farther down with the stockers, since the rpm's will be lower and you will need more input to feed the motor since its under a higher load due to the gearing. the higher the throttle input, the more you are asking from the motor, and the more strain its under to meet your demands.
 
helty said:
tomorrow bud, on my way to work I'll turn down the Metallica and make a vid while cruising between 60-80mph, different rpms and all. Just for you old farts :p

Hey now, I didnt think 19 was old... I'm always rockin metallica in my stang.

My question to those claiming excessive wear at higher RPMs, is there any proof to this? Has anyone did a test with two engines of the same type, driving one at 2,000rpm and one at 3,000rpm then torn them down and noted any more wear in the engine running at 3,000rpm for extended periods?

Yes it would seem feesible that an engine running at a noticeably higher RPM for extended periods would infact see more wear, but there are a couple things to think about that combat this. First, for our cars anyway, we are running an OHC design that doesnt have nearly the amount of wearing points as a pushrod motor. The only valvetrain wear points on our cars would be the camshaft lobes, the followers, the top of the valves and the valvesprings if you want to consider them. The pushrod motors have all that, plus the pushrods and lifters. Second, compared to say, a 4 cylinder, a V8 doesnt need as many counterweights, and in essence is better balanced than the typical 4 cylinder. Higher RPMs also are followed by additional oil pressure to maintain lubrication in the cylinders, the crank, rods, etc. There is a reason for this.

You also cannot just say 3,000rpm is 3,000rpm. Revving to 3,000rpm in neutral vs being at 3,000rpm while WOT is a huge difference in stress on the engine. Yes we would be revving at a higher RPM, but are we really increasing the load on the engine that much more? For the people who have 4.10s (I do not), do you need more throttle or less throttle at say 80mph with more gear than you did with stock gears?

I cannot back up my argument with test data, however if you just think about how an engine operates it should be easy to see that the life of the engine is not being significantly compromised by running 4:10's at cruising speeds vs stock gears.