'92 Accord: 3,000 rpm at 70 mph...

Awl --

Automatic, fwd, .... am I missing a gear, mebbe overdrive?
I thought most cars did 80 mph at 3,000 rpm.

If 70 at 3,000 rpm is normal for this car, can I stick in a taller gear
somewhere?

Thanks.
--
EA

"Existential Angst" wrote

> Automatic, fwd, .... am I missing a gear, mebbe overdrive?

You have a 4-speed, with a lockup torque converter.
Are you feeling all the shifts, and the lockup?
Is the shifter in position D4?

> I thought most cars did 80 mph at 3,000 rpm.

Different cars, different engine speeds.

> If 70 at 3,000 rpm is normal for this car, can I stick in a taller
> gear somewhere?

Sure, if you have a machine shop where you can completely
re-engineer the transmission.

"Sanity Clause" > wrote in message
...
>
> "Existential Angst" wrote
>
>> Automatic, fwd, .... am I missing a gear, mebbe overdrive?
>
> You have a 4-speed, with a lockup torque converter.
> Are you feeling all the shifts, and the lockup?
> Is the shifter in position D4?

I believe I feel all the shifts, but not sure what a lockup is.
Is a lockup the overdrive, a 5th gear?
Shifter is in D4... leaving it in D3 is quite noticeable, ito engine speed.

>
>> I thought most cars did 80 mph at 3,000 rpm.
>
> Different cars, different engine speeds.
>
>> If 70 at 3,000 rpm is normal for this car, can I stick in a taller
>> gear somewhere?
>
> Sure, if you have a machine shop where you can completely
> re-engineer the transmission.

I was hoping mebbe a shop could swap out a gear.
--
EA


>
>

On 04/05/2011 11:37 PM, Existential Angst wrote:
> "Sanity > wrote in message
> ...
>>
>> "Existential Angst" wrote
>>
>>> Automatic, fwd, .... am I missing a gear, mebbe overdrive?
>>
>> You have a 4-speed, with a lockup torque converter.
>> Are you feeling all the shifts, and the lockup?
>> Is the shifter in position D4?
>
> I believe I feel all the shifts, but not sure what a lockup is.
> Is a lockup the overdrive, a 5th gear?
> Shifter is in D4... leaving it in D3 is quite noticeable, ito engine speed.

1. do you get four shifts of five? [the fifth shift is the lockup
clutch freezing the torque converter.]

2. in fourth at freeway speed, if you press the throttle a little more,
do the revs go up immediately or only as speed increases?

if you're only getting four and the revs increase immediately, the
lockup clutch is not operating. not uncommon on this age of honda.

wire an l.e.d. into the lockup clutch circuit so you can see if it's
being activated or not. if not, check the contactor switch on the
transmission shifter and make sure it's working properly.

http://www.flickr.com/photos/38636024@N00/4581625436/
http://www.flickr.com/photos/38636024@N00/4580950961/
http://www.flickr.com/photos/38636024@N00/4580950951/

those pics are for a civic, but the same issue affects the accord and it
uses the same switch.

if that doesn't fix it, the torque converter needs to be replaced.


>
>>
>>> I thought most cars did 80 mph at 3,000 rpm.
>>
>> Different cars, different engine speeds.
>>
>>> If 70 at 3,000 rpm is normal for this car, can I stick in a taller
>>> gear somewhere?
>>
>> Sure, if you have a machine shop where you can completely
>> re-engineer the transmission.
>
> I was hoping mebbe a shop could swap out a gear.


--
nomina rutrum rutrum

"jim beam" > wrote in message
t...
> On 04/05/2011 11:37 PM, Existential Angst wrote:
>> "Sanity > wrote in message
>> ...
>>>
>>> "Existential Angst" wrote
>>>
>>>> Automatic, fwd, .... am I missing a gear, mebbe overdrive?
>>>
>>> You have a 4-speed, with a lockup torque converter.
>>> Are you feeling all the shifts, and the lockup?
>>> Is the shifter in position D4?
>>
>> I believe I feel all the shifts, but not sure what a lockup is.
>> Is a lockup the overdrive, a 5th gear?
>> Shifter is in D4... leaving it in D3 is quite noticeable, ito engine
>> speed.
>
> 1. do you get four shifts of five? [the fifth shift is the lockup clutch
> freezing the torque converter.]
>
> 2. in fourth at freeway speed, if you press the throttle a little more, do
> the revs go up immediately or only as speed increases?
>
> if you're only getting four and the revs increase immediately, the lockup
> clutch is not operating. not uncommon on this age of honda.
>
> wire an l.e.d. into the lockup clutch circuit so you can see if it's being
> activated or not. if not, check the contactor switch on the transmission
> shifter and make sure it's working properly.
>
> http://www.flickr.com/photos/38636024@N00/4581625436/
> http://www.flickr.com/photos/38636024@N00/4580950961/
> http://www.flickr.com/photos/38636024@N00/4580950951/
>
> those pics are for a civic, but the same issue affects the accord and it
> uses the same switch.
>
> if that doesn't fix it, the torque converter needs to be replaced.

I'm home-bound today, but by tomorrow I'll be able to take the car on the
highway, and pay close attention to this, and post back.
Oh, I should add, this honda has low miles for its age, about 130K.
Great advice, thanks.
--
EA


>
>
>>
>>>
>>>> I thought most cars did 80 mph at 3,000 rpm.
>>>
>>> Different cars, different engine speeds.
>>>
>>>> If 70 at 3,000 rpm is normal for this car, can I stick in a taller
>>>> gear somewhere?
>>>
>>> Sure, if you have a machine shop where you can completely
>>> re-engineer the transmission.
>>
>> I was hoping mebbe a shop could swap out a gear.
>
>
> --
> nomina rutrum rutrum

On 04/06/2011 07:56 AM, Existential Angst wrote:
> "jim > wrote in message
> t...
>> On 04/05/2011 11:37 PM, Existential Angst wrote:
>>> "Sanity > wrote in message
>>> ...
>>>>
>>>> "Existential Angst" wrote
>>>>
>>>>> Automatic, fwd, .... am I missing a gear, mebbe overdrive?
>>>>
>>>> You have a 4-speed, with a lockup torque converter.
>>>> Are you feeling all the shifts, and the lockup?
>>>> Is the shifter in position D4?
>>>
>>> I believe I feel all the shifts, but not sure what a lockup is.
>>> Is a lockup the overdrive, a 5th gear?
>>> Shifter is in D4... leaving it in D3 is quite noticeable, ito engine
>>> speed.
>>
>> 1. do you get four shifts of five? [the fifth shift is the lockup clutch
>> freezing the torque converter.]
>>
>> 2. in fourth at freeway speed, if you press the throttle a little more, do
>> the revs go up immediately or only as speed increases?
>>
>> if you're only getting four and the revs increase immediately, the lockup
>> clutch is not operating. not uncommon on this age of honda.
>>
>> wire an l.e.d. into the lockup clutch circuit so you can see if it's being
>> activated or not. if not, check the contactor switch on the transmission
>> shifter and make sure it's working properly.
>>
>> http://www.flickr.com/photos/38636024@N00/4581625436/
>> http://www.flickr.com/photos/38636024@N00/4580950961/
>> http://www.flickr.com/photos/38636024@N00/4580950951/
>>
>> those pics are for a civic, but the same issue affects the accord and it
>> uses the same switch.
>>
>> if that doesn't fix it,

addendum:
if that doesn't fix it, and you are getting solenoid activation shown by
the led, but no lockup, the torque converter needs to be replaced.

you should precede replacement with a transmission pressure test as well
- if the oil pump is not generating sufficient pressure, you may as well
replace the whole transmission. jdm replacements are dirt cheap and
generally very reliable.


> the torque converter needs to be replaced.
>
> I'm home-bound today, but by tomorrow I'll be able to take the car on the
> highway, and pay close attention to this, and post back.
> Oh, I should add, this honda has low miles for its age, about 130K.
> Great advice, thanks.


--
nomina rutrum rutrum

"Existential Angst" > wrote in message
...
> Awl --
>
> Automatic, fwd, .... am I missing a gear, mebbe overdrive?
> I thought most cars did 80 mph at 3,000 rpm.
>
> If 70 at 3,000 rpm is normal for this car, can I stick in a taller gear
> somewhere?

In poking around the internet I found the following (from
http://www.honda-tech.com/showthread.php?t=2809188 ):

Originally Posted by CB7tuner.com
AUTOMATIC TRANSAXLE GEAR RATIO COMPARISON - CB7 Swap Options:
USDM F22AX 90-93 ACCORD DX/LX COUPE:

Diff Type & Tranny Codes:
STD Only = PX4B

2.705 1
1.464 2
1.028 3
0.707 4
4.285 final

4th gear 195/60 R15
70mph = 2944 rpm
80mph = 3364 rpm

So, if this is correct, then it seems like you your tach should be showing
close to 3000 rpm at 70 mph, assuming you are in lock-up mode.

Let's check the math....

195/60R15 Tires = 833 revoltions per mile (approximate), or 58310 revolution
per hour at 70 miles per hour. This is 971.8 revolutions per minute at the
final drive output. With a final drive ratio of 4.285 to 1, this means the
transmission output shaft speed is 4164 rpm (971.8 x 4.285). The fourth gear
drive ratio is 0.7074 to 1 (an overdrive), so the engine speed must be 2946
rpm (4164 x 0.7074, assuming torque converter is locked up).

Seem like a tach reading of 3000 rpm at 70 mph is reasonable.

If you want to go to a lot of trouble you could swap in a 94/97 Automatic
(assuming it will fit). From the same reference as above:

USDM F22B1/F22B2 94-97 ACCORD COUPE/SEDAN:

Diff Type & Tranny Codes:
STD Only = ?

2.736 1
1.483 2
1.026 3
0.674 4
4.133 final

4th gear 195/60 R15
70mph = 2707 rpm
80mph = 3093 rpm

But you are only going to knock down the 70 mph engine RPM from 2944 to
2707...is it worth the performance hit?

Ed

On Tue, 05 Apr 2011 23:21:15 -0700, Sanity Clause wrote:

>
> "Existential Angst" wrote
>
>> Automatic, fwd, .... am I missing a gear, mebbe overdrive?
>
> You have a 4-speed, with a lockup torque converter. Are you feeling all
> the shifts, and the lockup? Is the shifter in position D4?
>
>> I thought most cars did 80 mph at 3,000 rpm.
>
> Different cars, different engine speeds.
>
>> If 70 at 3,000 rpm is normal for this car, can I stick in a taller gear
>> somewhere?
>
> Sure, if you have a machine shop where you can completely re-engineer the
> transmission.


Aw, c'mon! Everyone knows there ain't no Sanity Clause...

On 04/06/2011 06:58 PM, Hachiroku ãƒ�ãƒ�ãƒ*ク wrote:
> On Tue, 05 Apr 2011 23:21:15 -0700, Sanity Clause wrote:
>
>>
>> "Existential Angst" wrote
>>
>>> Automatic, fwd, .... am I missing a gear, mebbe overdrive?
>>
>> You have a 4-speed, with a lockup torque converter. Are you feeling all
>> the shifts, and the lockup? Is the shifter in position D4?
>>
>>> I thought most cars did 80 mph at 3,000 rpm.
>>
>> Different cars, different engine speeds.
>>
>>> If 70 at 3,000 rpm is normal for this car, can I stick in a taller gear
>>> somewhere?
>>
>> Sure, if you have a machine shop where you can completely re-engineer the
>> transmission.
>
>
> Aw, c'mon! Everyone knows there ain't no Sanity Clause...
>
>

Heck, my '84 GTI would turn about 4K @ 75... all day... miss that car

nate

--
replace "roosters" with "cox" to reply.
http://members.cox.net/njnagel

"C. E. White" > wrote in
:

>
> "Existential Angst" > wrote in message
> ...
>> Awl --
>>
>> Automatic, fwd, .... am I missing a gear, mebbe overdrive?
>> I thought most cars did 80 mph at 3,000 rpm.
>>
>> If 70 at 3,000 rpm is normal for this car, can I stick in a taller
>> gear somewhere?
>
> In poking around the internet I found the following (from
> http://www.honda-tech.com/showthread.php?t=2809188 ):
>
> Originally Posted by CB7tuner.com
> AUTOMATIC TRANSAXLE GEAR RATIO COMPARISON - CB7 Swap Options:
> USDM F22AX 90-93 ACCORD DX/LX COUPE:
>
> Diff Type & Tranny Codes:
> STD Only = PX4B
>
> 2.705 1
> 1.464 2
> 1.028 3
> 0.707 4
> 4.285 final
>
> 4th gear 195/60 R15
> 70mph = 2944 rpm
> 80mph = 3364 rpm
>
> So, if this is correct, then it seems like you your tach should be
> showing close to 3000 rpm at 70 mph, assuming you are in lock-up mode.
>
> Let's check the math....
>
> 195/60R15 Tires = 833 revoltions per mile (approximate), or 58310
> revolution per hour at 70 miles per hour. This is 971.8 revolutions
> per minute at the final drive output. With a final drive ratio of
> 4.285 to 1, this means the transmission output shaft speed is 4164 rpm
> (971.8 x 4.285). The fourth gear drive ratio is 0.7074 to 1 (an
> overdrive), so the engine speed must be 2946 rpm (4164 x 0.7074,
> assuming torque converter is locked up).
>
> Seem like a tach reading of 3000 rpm at 70 mph is reasonable.
>
> If you want to go to a lot of trouble you could swap in a 94/97
> Automatic (assuming it will fit). From the same reference as above:
>
> USDM F22B1/F22B2 94-97 ACCORD COUPE/SEDAN:
>
> Diff Type & Tranny Codes:
> STD Only = ?
>
> 2.736 1
> 1.483 2
> 1.026 3
> 0.674 4
> 4.133 final
>
> 4th gear 195/60 R15
> 70mph = 2707 rpm
> 80mph = 3093 rpm
>
> But you are only going to knock down the 70 mph engine RPM from 2944
> to 2707...is it worth the performance hit?
>
> Ed
>
>
>

200 rpm will be quite noticible on the top end and not so much on the
bottom. I have done this many times on different vieh. most of the time
with good results. But sometimes it doesn`t make a whit of diff. just the
chance you take. KB