Poll: What's faster? Automatic or Manual Transmission? Help clear the debate...

Page 3 - Seeking answers? Join the AnandTech community: where nearly half-a-million members share solutions and discuss the latest tech.

LAUST

Diamond Member
Sep 13, 2000
8,957
1
81
Originally posted by: Jeff7181
Originally posted by: LordSnailz
for those saying manual, can anyone explain why?

Less parasitic drag, and no slippage like you'll get with a torque converter.
That is correct but, I see higher MPH fromt he manuals due to less mass, but the 1/4 mile ET's are lower with Auto's..

Lower ET crosses the line first = the winner

 

Jeff7181

Lifer
Aug 21, 2002
18,368
11
81
Originally posted by: LAUST
Originally posted by: Jeff7181
Originally posted by: LordSnailz
for those saying manual, can anyone explain why?

Less parasitic drag, and no slippage like you'll get with a torque converter.
That is correct but, I see higher MPH fromt he manuals due to less mass, but the 1/4 mile ET's are lower with Auto's..

Lower ET crosses the line first = the winner

Because it takes time to shift... in auto, shifting takes maybe .01 seconds in a properly race prepped transmission. No matter how "beefed" up a manual is, if you're using the clutch, it takes a lot more time to shift compared to an auto.
 

cavemanmoron

Lifer
Mar 13, 2001
13,676
40
91
Originally posted by: LAUST
in the 1/4 mile?

it's already proven Auto's are. you don't see T5/T6 or ZF-6 in the super gas series or other trailor series 1/4 mile cars (the fast one's not the one's you kiddies drive) You see names like Powerglide, 727 and C4/C6.

Stop with the "depends on the driver" crap that is a stupid argument with no weight AT ALL... produce a time slip or a 1/4 mile pic before you open your OPINIONATED cakeholes... mine are in my sig.

super stock NHRA Real drag racing. current records.

SS/D 9.34 142.43 03/23/02 Kenneth Vaughn - Columbia, TN
'68 Chevy Camaro Memphis, TN

SS/DA 9.42 140.80 11/30/02 Alex Polewik - Fort Dodge, IA
'69 Chevy Camaro Montgomery, AL

the SS/D"A" for automatic is slower in time,and mph


there is your time slip.

many of the classes are the same deal,the standard shift cars Are Faster.

some are so close its far Out

SS/I 9.97 132.66 10/12/01 Tony Fillipone - Woburn, MA
'66 Chevy Nova SS

SS/IA 9.97 133.20 06/22/03 Ron Parness - Conifer, CO
'67 Chevy II

here in SS/I they are the same time,and the auto car is .6 mph faster..

here is an example from NHRA "Stock" class

D/S 10.39 127.15 04/12/03 Scott Hilton - Burbank, CA
'67 Ford Mustang

D/SA 10.71 121.85 03/01/03 Austin Ford - Spring, TX
'67 Ford Shelby

again the D/S"A" for auto is slower both in time,and ,speed!
 

Gyrene

Banned
Jun 6, 2002
2,841
0
0
Originally posted by: Jeff7181
Originally posted by: dtyn
I find it insanely hard to launch my car (480whp) now that it has a lightened flywheel. I had traction problems before, but now they're just insane. It's points like these where I wish I had an automatic.

Funny how people do things to try to improve performance, and it has an effect they don't plan on, and it actually reduces their times =) Out of curiosity, what engine?

2JZ-GTE. The lightened flywheel helps alot on the road courses, but sucks for the 1/4 because I don't know how to launch it right, yet. Give me some time and I will.
 

Demon-Xanth

Lifer
Feb 15, 2000
20,551
2
81
Originally posted by: Shantanu
With automatics you always get the same performance, regardless of whose driving. But with manuals, it varies depending upon the skill of the driver.

With a professional driver, though, the manual transmission will almost always be faster than the automatic.

But the degree to which it is faster depends upon the quality of the automatic transmission. The Cadillac CTS, for example, has a really efficient automatic transmission, so it's 0-60 times for automatic are about the same as a manual being driven by a professional driver.



So can you explain to me why it took my sister 4 runs to drop from 14.4 to 13.9, and my brother in law (who has raced quite a bit) a couple to drop from 14.1 to 13.7? Same car, same night. His times were always lower between runs (very good night to be at the track, I got 8 runs in 2 hours, a few of them about 2 minutes apart)

There's more to an auto than "jam the gas and go". Given most street muscle cars, you'll light them up if you do a full on brake torque and a sudden release, and if you just hammer it without break torquing it you'll shock the drive train and leave some road graphitti.

Power is only half the battle, hooking it up is another issue.
 

Jeff7181

Lifer
Aug 21, 2002
18,368
11
81
Originally posted by: dtyn
Originally posted by: Jeff7181
Originally posted by: dtyn
I find it insanely hard to launch my car (480whp) now that it has a lightened flywheel. I had traction problems before, but now they're just insane. It's points like these where I wish I had an automatic.

Funny how people do things to try to improve performance, and it has an effect they don't plan on, and it actually reduces their times =) Out of curiosity, what engine?

2JZ-GTE. The lightened flywheel helps alot on the road courses, but sucks for the 1/4 because I don't know how to launch it right, yet. Give me some time and I will.

Actually it's never going to help your launch time... the purpose of a flywheel being so heavy is for inertia so when you let the clutch out it doesn't drag the engine down and stall it... when you lighten it, you reduce that ability, but you're also able to spin the engine's RPM's up slightly faster... however... I don't really see it making THAT big a difference even on road courses when you have the weight of a 3000+ pound car as drag as well =) It does help somewhat in road racing because the RPM's will drop faster, letting you get into the next gear sooner... which in turn just reduces the time it takes to shift gears... which isn't THAT important in road racing.
 

Gyrene

Banned
Jun 6, 2002
2,841
0
0
Originally posted by: Jeff7181
Originally posted by: dtyn
Originally posted by: Jeff7181
Originally posted by: dtyn
I find it insanely hard to launch my car (480whp) now that it has a lightened flywheel. I had traction problems before, but now they're just insane. It's points like these where I wish I had an automatic.

Funny how people do things to try to improve performance, and it has an effect they don't plan on, and it actually reduces their times =) Out of curiosity, what engine?

2JZ-GTE. The lightened flywheel helps alot on the road courses, but sucks for the 1/4 because I don't know how to launch it right, yet. Give me some time and I will.

Actually it's never going to help your launch time... the purpose of a flywheel being so heavy is for inertia so when you let the clutch out it doesn't drag the engine down and stall it... when you lighten it, you reduce that ability, but you're also able to spin the engine's RPM's up slightly faster... however... I don't really see it making THAT big a difference even on road courses when you have the weight of a 3000+ pound car as drag as well =) It does help somewhat in road racing because the RPM's will drop faster, letting you get into the next gear sooner... which in turn just reduces the time it takes to shift gears... which isn't THAT important in road racing.

Well, it's dropped me by a couple of seconds on my home autox course, but maybe that's just my driving getting better.
 

merlocka

Platinum Member
Nov 24, 1999
2,832
0
0
It probably depends... one thing to note is that alot of the 0-60 times of auto vs manual might not be a good inidcation of which is "faster" since in some cars the manual might make 60 in 1 less gear than the auto.