The Getrag F23 Tutorial - By Emc209i (Page 13/28)
mcguiver3 AUG 29, 05:02 PM
Does it provide any alignment or shaft support in any way?
aaronkoch AUG 29, 05:30 PM

quote
Originally posted by mcguiver3:

Does it provide any alignment or shaft support in any way?



No. It makes no contact. The transmissions have bearings on both ends of the input shaft, and do not need / use a pilot bushing.
Will AUG 29, 06:38 PM

quote
Originally posted by Will:

but there is no contact. There is no engagement.
My84 SEP 03, 06:07 AM
i see there are 3 different bell houseings. i am thinking of swaping and was wondering what houseing i need. atm i am useing the 2.5 but plan to swap in the distant future. ( not sure what engine at this time ) .as for the F23 i plan on useing either 3.95 Final Drive out of the HHR or the 3.84 Final Drive for Chevrolet Cobalt. but need to know what bolt pattern i have. ( i think it is the 60* ) but want confermation before i put out any money.

Thanks
Steven
BlownFiero86 SEP 03, 06:13 AM
You will want a bell housing out of a cavalier, sunfire, or grand am from 2000 to 2005. They have a 3.94 final drive, but if you want a 3.84 or 3.63 out of a cobalt the transmissions will split and bolt from on bell housing to another.



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86GT, 3800SC, GETRAG, true duals, 3.4 pulley, comp VS cam, zzp match flow injectors, zzp power log, WCF air intake, ARP bolts, comp lifters and push rods, 90# springs, SI stainless valves, aero-force scantech meter.
Here is my build thread http://www.fiero.nl/forum/Forum2/HTML/122548.html

[This message has been edited by BlownFiero86 (edited 09-03-2012).]

My84 SEP 03, 06:44 AM

quote
Originally posted by BlownFiero86:

You will want a bell housing out of a cavalier, sunfire, or grand am from 2000 to 2005. They have a 3.94 final drive, but if you want a 3.84 or 3.63 out of a cobalt the transmissions will split and bolt from on bell housing to another.




Thanks. that makes things less expensive if i go witht he 3.94 final. alltho the lower gears will increase the mpg. hrm - what to do, what to do.... more pondering required.

[This message has been edited by My84 (edited 09-03-2012).]

Fierobsessed SEP 03, 10:55 AM

quote
Originally posted by BlownFiero86:

You will want a bell housing out of a cavalier, sunfire, or grand am from 2000 to 2005.




When the 2200 L22 went out of production for the 2003 model year, this bell housing on the F23 was also lost.

So... Only look for 2000-2002 model years Cavalier, and Sunfire.

The Grand AM never had an L22 engine, and the LA1 3400 wasn't available with the F23 at all. So it never had the F23 bell housing that we need in it.
BV MotorSports SEP 11, 10:39 PM
Speed Sensor The Getrag F23 uses the newer 24,000 ppm magnetic hall effect sensor, which can be found in other newer GM four cylinder transmissions. To correctly configure this input for the Fiero's 4000 ppm speedometer, a PCM which can filter the 24,000 ppm signal must be used to interface the signal along with the infamous conversion circuit. If such equipment is not available per application - say a carbed engine, the Dakota Digital SGI-5 box can be used to control the speedometer.

Any more information on this? My speedo bounces from 120 down to 80 very rapidly (pulses) when I am driving it. Any help on this would be FANTASTIC. I am using a '98 GTP ecu and a (IIRC) '02 F23.

[This message has been edited by BV MotorSports (edited 09-11-2012).]

Trinten SEP 11, 11:10 PM
The instrument cluster is looking for a different pulse, one that's much slower. Which is why your needle is burying and bouncing off the stop pin. I don't know if the issue can be fixed through the ECU or not. I had to use the Dakota Digital converter to drop the pulse that was going from the transmission to the speedo.

To my knowledge (ie, not a fact!), Jncomutt was not able to get his ECU to play nice with converting the signals, but in short, you need to get the ECU to translate the signal. I don't recall if the OEM was 4k pulse or 2k pulse, 4 sounds right, but please double check.. or reread the part about the speedo and buy the Dakota unit, bypass your ECU completely.
Justinbart SEP 11, 11:32 PM
Mine works perfectly fine. I used the PCM output and Ryan's diagram to make a circuit so the speedo works like it should.

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Turbo 3800 E85 F23 5spd spec5
11.54@132.7