Notices
928 Forum 1978-1995
Sponsored by:
Sponsored by: 928 Specialists

Difference between auto and manual

Thread Tools
 
Search this Thread
 
Old Feb 10, 2009 | 06:53 PM
  #46  
worf928's Avatar
worf928
Addict
Rennlist Member
20 Year Member
 
Joined: Oct 2003
Posts: 17,262
Likes: 2,144
From: Gone. On the Open Road
Default

Originally Posted by WallyP
Worf says. "As I said, I may be grossly mistaken. If anyone can find a successful, non-trivial, non-experimental racing (oh, and non-drag-racing) application of a viscously-coupled slush box, I'll take it all back."
You mean other than Jim Hall's Chaparral?
(You didn't specify that it had to be current!)
Good call Wally, and no, I didn't specify that it had to be current. Wiki's a bit short on information other than calling it a "semi-automatic transmission" and

... While always extremely fast, the extra power of the larger engine was too much for the automatic transmission to handle and it broke with regularity. When a solution was finally found to the transmission problems,...

(Yes, I did cherry-pick that quote...)

The Chaparral Files also seem a bit vague.

Ok. So, was it actually a slushy-box transmission? Or was it based upon a manual transmission with a remotely-activated clutch?
Reply
Old Feb 10, 2009 | 07:00 PM
  #47  
worf928's Avatar
worf928
Addict
Rennlist Member
20 Year Member
 
Joined: Oct 2003
Posts: 17,262
Likes: 2,144
From: Gone. On the Open Road
Default

Originally Posted by IcemanG17
Dual Clutch automated manuals are the way of the future.....
Originally Posted by worf928
Dual-(dry-)clutch gearboxes have replaced slushies in Porsches and will soon replace slushies in the mid- and high-end market. I bet that within 15 years very few new cars will be offered with a slushy.
I agree(d) completely.

Now if there only was a reasonable cost way to fit one to a 928......bummer is its heavy at over 200lbs
Yup. It would be complicated as (I'm relatively) certain that the DSG's computer control wants to be integrated with the engine management. The latter's going to want all the modern goodies on the engine - in particular e-gas. I think we need to wait until they put the DSG (PDK) in the Cayenne. Then we'll just midnight requisition the whole drivetrain out from under one including the engine harnesses and ECUs...
Reply
Old Feb 10, 2009 | 07:13 PM
  #48  
worf928's Avatar
worf928
Addict
Rennlist Member
20 Year Member
 
Joined: Oct 2003
Posts: 17,262
Likes: 2,144
From: Gone. On the Open Road
Default

If anyone wants to dive below the user interface, Wiki's got a good overview of various transmission architectures:

http://en.wikipedia.org/wiki/Transmission_(mechanics)
Reply
Old Feb 10, 2009 | 09:41 PM
  #49  
shmark's Avatar
shmark
Drifting
 
Joined: Dec 2004
Posts: 2,235
Likes: 2
From: Atlanta
Default

Originally Posted by Bill Ball
Anyway, I don't mean to raise the flame level on this debate, as it's mostly personal preference.
Exactly, and as my preference is to remain un-irritated, I drive manuals. Actually there's nothing wrong with a good slushbox and there are some very sophisticated designs out there, tiptronic comes to mind. But Dave is right, it has nothing to do with the number of pedals and everything to do with the operation of the box. Torque-converter autos will always have that slushy feel that I personally don't like. I like the direct drive aspect of a clutch-operated gearbox, and when I'm cruising along I like the application of the throttle to have a direct affect on my forward progress. WAAAHHHHH instead of bwuuhhhWAAAAHHHH.

Ferrari's F1 system is an amazing piece of interim technology that is also on its way out, to be replaced by the dual-clutch style that Porsche pioneered in the 962. I've driven just about every flavor from a CVT (sucks worse than a standard auto), standard autos, tiptronics, BMW DSG, Ferrari F1, Maserati Cambiocorsa (same thing), to the new dual clutches from Audi and VW - haven't tried Porsche's yet but the button/shifter layout is just plain weird. My friend's GTI with the dual-clutch setup is just amazing to drive, and now Ferrari has released their first dual clutch in the California. I'll bet they replace the single-clutch F1 boxes in the rest of the line soon. Even the vaunted Veyron uses a dual (wet) clutch design.

And yes, Jim Hall's Chaparral used a full torque converter auto, Wally beat me to it. Got a book on the thing here at home but can't find a decent reference online.
Reply
Old Feb 10, 2009 | 10:08 PM
  #50  
cold_beer839's Avatar
cold_beer839
Rennlist Member
 
Joined: Feb 2008
Posts: 2,742
Likes: 0
From: Lillington, NC
Default

I really liked my '87 S4 auto, once I installed the "Sport Shifter" from 928 Motorsports, before then, it was no fun to manually shift, the awkward thumb button and T handle were just bad. No rev limiter on the auto, YEEHAW!!

On the other hand, my '93 GTS is simply a blast to drive with the 5-spd. Feels like more of a sports car.
Reply
Old Feb 10, 2009 | 11:14 PM
  #51  
worf928's Avatar
worf928
Addict
Rennlist Member
20 Year Member
 
Joined: Oct 2003
Posts: 17,262
Likes: 2,144
From: Gone. On the Open Road
Default

Originally Posted by shmark
And yes, Jim Hall's Chaparral used a full torque converter auto, Wally beat me to it. Got a book on the thing here at home but can't find a decent reference online.
Sweet! Ok. I'll take it all back. Slushy Rogerboxes Rulz (when coupled with movable aero devices) How's that?
Reply
Old Feb 11, 2009 | 12:02 AM
  #52  
Sailmed's Avatar
Sailmed
Three Wheelin'
 
Joined: Dec 2005
Posts: 1,822
Likes: 1
From: In the boatyard installing the mast and engine, we don't need a crane, we harness the mesquito's! Yeah!
Default

I love it - a rogerbox thread, again.......
(Buddy - you should feel pretty good having a "box" named after you)
I must admit, I never had a rogerbox until recently......
It really depends on where your going with the car.
I drive around town and "row' my box - I like it!
If I'm out on the highway and anticipate passing, I enjoy dropping down into 4th with the 5 spd.
I'll take either one and enjoy the fact that I'm riding in a 928.
Reply
Old Feb 11, 2009 | 12:25 AM
  #53  
Ninespub's Avatar
Ninespub
Three Wheelin'
20 Year Member
 
Joined: Jan 2003
Posts: 1,385
Likes: 10
From: Saginaw, MI
Default

Just a thought....... where the hell is Roger in all this rhetoric? He is the object of the freshly coined term "Rogerbox" and he's not even in the game! Whats up with that Rog? Where are you? Class.... Class.... Buehler.... Roger.....

Paul Barrera '91 $$$$4 AT
Reply
Old Feb 11, 2009 | 01:48 AM
  #54  
namasgt's Avatar
namasgt
Three Wheelin'
 
Joined: Nov 2008
Posts: 1,675
Likes: 4
From: TEXAS
Default

I personally hate AT' s ( I mean I really really hate them ) .
But when I went to buy my 88 Auto, I enjoyed the fact that it was a 928 when I test drove it. When I was driving it back to home 4 and a half hours away I enjoyed the whole trip and did not care anymore that it was an Auto, did not even pay attention to it. However I would still love to test drive a 5 speed 928 and if I like it, I will buy one and also keep the Auto. I was thinking to actually keep the Auto for a few months and sell it then buy a manual, but since I really enjoyed driving the car I decided to keep it.
I think arguments like this “manual better than the auto and auto better than manual and bla bla bla” is bringing the values of these cars down.

Just enjoy the fact that it’s a V8 Porsche and drive it.
Reply
Old Feb 11, 2009 | 04:02 AM
  #55  
belgiumbarry's Avatar
belgiumbarry
Three Wheelin'
15 Year Member
 
Joined: Oct 2008
Posts: 1,671
Likes: 580
From: Belgium
Default

Originally Posted by namasgt
I personally hate AT' s ( I mean I really really hate them ) .
But when I went to buy my 88 Auto, I enjoyed the fact that it was a 928 when I test drove it. When I was driving it back to home 4 and a half hours away I enjoyed the whole trip and did not care anymore that it was an Auto, did not even pay attention to it. However I would still love to test drive a 5 speed 928 and if I like it, I will buy one and also keep the Auto. I was thinking to actually keep the Auto for a few months and sell it then buy a manual, but since I really enjoyed driving the car I decided to keep it.
I think arguments like this “manual better than the auto and auto better than manual and bla bla bla” is bringing the values of these cars down.

Just enjoy the fact that it’s a V8 Porsche and drive it.
totally agree .........but , , over here i see "oldtimers" get more value with time and important subjects among that is that if it is a manual and ofcourse convertibles.... we don't have that much 928 convertibles, but i'm i right to see in the US manuals are already more valued as to autos ?

Manuals are searched here, autos don't get saled.


What i personaly know is that most are scared of a "old" auto for the costs in case of brake down...., ( generaly speaking , not only 928 ) , common sense is that a manual can be repared by DIY , a auto not. So expensive professional hours and parts ... , just a feeling.
Reply
Old Feb 11, 2009 | 08:29 AM
  #56  
Darklands's Avatar
Darklands
Rennlist Member
15 Year Member
 
Joined: Jul 2008
Posts: 3,089
Likes: 1,453
From: Near Hamburg-Germany
Default

A complete ATransmissionrepair with all parts you need and so on is here near Hamburg for us 928 ~2500 €.
After the revision the transmission is like new.I think it´s an fair price.

http://www.tri-getriebe.org/porsche.htm
Reply
Old Feb 11, 2009 | 09:15 AM
  #57  
Marine Blue's Avatar
Marine Blue
Addict
Rennlist Member
 
Joined: Jul 2004
Posts: 16,015
Likes: 815
From: Temecula, CA
Default

Originally Posted by belgiumbarry
totally agree .........but , , over here i see "oldtimers" get more value with time and important subjects among that is that if it is a manual and ofcourse convertibles.... we don't have that much 928 convertibles, but i'm i right to see in the US manuals are already more valued as to autos ?

Manuals are searched here, autos don't get saled.


What i personaly know is that most are scared of a "old" auto for the costs in case of brake down...., ( generaly speaking , not only 928 ) , common sense is that a manual can be repared by DIY , a auto not. So expensive professional hours and parts ... , just a feeling.
Both transmissions sell here in the states however their is a premium for a 5spd since the quantities are limited. Simple supply demand situation really.

Some good points brought up.

When I drove the M3 with SMG I felt like I was playing a video game. No feedback and very difficult to get a "feel" for the transmission. Personally if I wanted to play a video game I would do just that.
Reply
Old Feb 11, 2009 | 09:21 AM
  #58  
ew928's Avatar
ew928
Owns the Streets
Needs Camber
Lifetime Rennlist
Member
 
Joined: May 2003
Posts: 10,292
Likes: 1
From: New York
Default

Why would anyone want a RogerBox.


Speaks funny and drinks lots of fluids.
Not sure if he leaks around garage floors tho.
Reply
Old Feb 11, 2009 | 10:09 AM
  #59  
Larry Velk's Avatar
Larry Velk
Instructor
 
Joined: Aug 2006
Posts: 232
Likes: 1
From: New Berlin, WI
Default

Our cars are old. To me this means 2 things, I'd like to compare them to contemporaries and I need to consider fixing the thing when old stuff breaks. No way mine shifts like my old Vette with a Muncie and a Hurst, or my rear drive Ford with a T5. A 928 just isn't as good as those gold-standard 60's/70's bell-crank, direct action boxes. That said, the 928 with new bushings and master shifts OK and has less parts than an auto. What matters to me is the "less parts" issue.
Reply
Old Feb 11, 2009 | 10:21 AM
  #60  
ROG100's Avatar
ROG100
Basic Sponsor
Rennlist
Site Sponsor

20 Year Member
 
Joined: Jan 2003
Posts: 16,942
Likes: 1,045
From: Double Oak, TX
Default

Paul,
I'm here and reading and laughing.
Said my piece at the beginning - no need to go back and look as you can guess what I said.
Great entertainment.
Roger
__________________

Does it have the "Do It Yourself" manual transmission, or the superior "Fully Equipped by Porsche" Automatic Transmission? George Layton March 2014

928 Owners are ".....a secret sect of quietly assured Porsche pragmatists who in near anonymity appreciate the prodigious, easy going prowess of the 928."






Reply



All times are GMT -3. The time now is 04:57 PM.