Hey people,

1) I've heard Honda's automatic trannys are more like Manual ones than they are like true automatics. Is this true, if so how.

2) Do Honda's Automatic transmissions' torque converter have lockup clutches?

 

I heard they do have lock-up clutches, but I don't really know what it means, and it's still an automatic.

 

#1 - NO. Not at all.

#2 - Which tranny (year/model)? Today they've all got lockup torque converters. But everybody else does too.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Paprika &raquo;</TD></TR><TR><TD CLASS="quote">

2) Do Honda's Automatic transmissions' torque converter have lockup clutches? </TD></TR></TABLE>
Depends on the year and model. Newer ones do, older ones dont.

 

Ahhh well I have a 92' Civic. So yeaah.. prolly not.

Do hondas autos use the planetary gear set?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Paprika &raquo;</TD></TR><TR><TD CLASS="quote">Ahhh well I have a 92' Civic. So yeaah.. prolly not.

Do hondas autos use the planetary gear set?</TD></TR></TABLE>
92 and up Civics have lock-up converters. No they dont have planetary gears.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Chiovnidca &raquo;</TD></TR><TR><TD CLASS="quote">No they dont have planetary gears.</TD></TR></TABLE>I bet that's why 'they' said it's more like a manual. Most autos probably use planetary gearsets, while manuals don't. But in MY opinion, having a torque converter is what makes all the difference.

 

Yeah, the torque converter sucks because I know its slipping when put down the gas and the car's movement isn't directly proportional to the engine RPMs, I have to go higher in the rev range to get the car to really respond, I hate it. I think thats why like GM cars shift very very smoothly compared to my Civic, becuase they're two different internal systems.

One thing that I find interesting is that when I hold the gears, I get alot more torque and acceleration power out of the engine.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Paprika &raquo;</TD></TR><TR><TD CLASS="quote">Yeah, the torque converter sucks because I know its slipping when put down the gas and the car's movement isn't directly proportional to the engine RPMs, </TD></TR></TABLE>
You probably wouldn't care at all for a CVT trans Honda. They'll hold the same rpm while they are accelerating, it takes some getting used to.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JimBlake &raquo;</TD></TR><TR><TD CLASS="quote">Most autos probably use planetary gearsets</TD></TR></TABLE>

Most autos from 30 years ago is more like it. The last car I can think of that used sun gears and all that crap is the Cavalier, up until pretty recently, I believe. Correct me if I'm wrong, but I think the auto was a 3 speed using planetary gearsets.

Most Powerglides and all that from the muscle car days used planetary gears, but as far as any remotely modern automatic transmission goes, they all use the "manual transmission style" gearsets with clutch packs to transfer power.

As far as the lockup convertor, they have had that for many years. Recall that you can use the torque convertor lockup output to drive a VTEC solenoid in a OBD0 civic ecu...

 

I could imagine so. Awkward.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by drdisco69 &raquo;</TD></TR><TR><TD CLASS="quote"> Recall that you can use the torque convertor lockup output to drive a VTEC solenoid in a OBD0 civic ecu...</TD></TR></TABLE>
That's interesting, can you point me to a link that explains how?

 

http://www.pgmfi.org

More specifically: http://forum.pgmfi.org/viewforum.php?f=7

That is the forum for the OBD0 non-vtec ecus. The NG55 development rom can be edited with TurboEdit, and supports VTEC through either the A/T lockup line or the AC convertor line. Boost and all that other fun stuff is in there too. Lots to learn on that site, take your time and read as much as you can.

 

Yeah that is really interesting, but what sucks is that I don't have a vtec engine in this car. Moreover, I am going manual w/ my next car.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by drdisco69 &raquo;</TD></TR><TR><TD CLASS="quote"> supports VTEC through either the A/T lockup line or the AC convertor line</TD></TR></TABLE>
aka, when I press the A/C button inside the car, VTEC engages?

 

No, it would replace the AC stuff, you would have to be AC-less with that method. The whole idea is that you use otherwise unused outputs on the ecu. For instance, if you had a manual transmission, you wouldn't be using the lockup solenoid, so you could use it for the VTEC solenoid. Same goes for AC if you abandon it, or never had it to begin with.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by drdisco69 &raquo;</TD></TR><TR><TD CLASS="quote">Most autos from 30 years ago is more like it...</TD></TR></TABLE>LOL... oh well, that makes sense! Our '98 Accord is automatic, but before that, I haven't owned an automatic since my parents got a '69 Opel Kadett.