Recently I had noticed a noise coming from my transmission, after some research on the noise I determined it was the ISB. (Noise starts when clutch is let off in neutral and slightly heard in gear) So I dropped my tranny and got to the ISB bearing, which was definitely the culprit since it made a loud rattling noise when spun. However, the new bearing I had ordered for the transmission was too large. I ordered the part from HondaPartsNow.com and used the VIN number of my car to find the part. What I believe happened is that at some point in time someone swapped the tranny that used to be in the car and now I can't seem to find anywhere to buy new parts for it. The transmission casing is stamped with P20 A0000 which definitely isn't the transmission for my model car. Can someone point me in the direction of where to buy this bearing from? The bearing itself has the numbers 6205V12 on the outer race and /26V16 on the inner race.

I also have all the measurements of the bearing.
Outer Diameter: 52mm
Inner Diameter:26mm
Width:15mm
Outer Race:4mm
Inner Race:4mm

 

Well I can't tell you what transmission you have, but I cross referenced the number(s) you provided for the bearing/race and came up with this part #91002-PHR-003. The specs listed for this part number match the specs you listed for the bearing, when I tried referencing the race it kept coming back to the entire bearing assembly.

 

Thanks for the find, I forgot to mention in the post but I will also need the new seal the goes with the ISB.

 

Another question is, what information will i need to find out what tranny i have?

 

Part #91216-PL3-005 is the seal that is suppose to go with that bearing part number I gave you.

 

The cars that honda shows work with the part numbers I gave you are 1996-2000 DX,LX & CX, but I don't know if there are differences beyond that with the gearing, etc...but they share the same ISB & seal.

Hopefully someone else has some knowledge on D series transmissions, I only mess with B & K series.

 

That is actually the seal that was sent to me with my first order with the oversized bearing, I installed the seal with the old bearing and poured some mtf on top of the bearing and the seal leaked, so I'm not 100% sure if it's the correct seal

 

Do you have the part number/specs from the original seal?

 

[QUOTE=1999 Civic Si;51232047]Do you have the part number/specs from the original seal?[/QUOTE
The seal is labled "NOK AH7743E"
but upon closer inspection, both of the seals are labeled the same and when measured under a micrometer have the same dimensions. Perhaps I installed the seal incorrectly

 

Nevermind, the seal didn't seal the second time because i put the plastic cage on the bearing facing the wrong way.

 

The code A0000 is indicative of an EX transmission out of a 96-00 civic. Or at least its the EX bell housing. I searched the part number under the EX and HX transmission and they seem to be the same : 91002-PS0-013. Is that the bearing you ordered? The seal number given to you by "1999 civic si" is the correct seal. And what we mean by part number is the number on the package they came sealed in, not the numbers along the rim of the bearing or the seal. Ive replaced a couple input shaft bearing on D series transmission and I usually order my part through hondapartscheap.com. Not sure if you ordered the correct bearing.

 

I'm not sure that is quite right.

I don't remember if the 96-98 D series trannies also did big and small bearing housings. The A000 should be the small bearing while the B000 should be the big bearing housing if it follows the same criteria as the 92-95 D series transmissions.

I was under the impression, the only changes between the 92-95 and the 96-00 D's was the shift forks internally went from aluminum to steel. Of which, the steel bends and allows you to further damage the tranny by driving with it. The aluminum breaks and you just stop driving it, preventing further damage.

I could be mistaken though.

 

Youre probably right, I have only worked on 96-00 D transmission, nothing older than that transmission wise. I know the part number I posted is correct for his application. Just not sure what bearing part number he bought.
Cheers Tom.

 

91002-PS0-013 is the original bearing I ordered, however it is too large by 6mm. 91002-PHR-003 is the new bearing i just ordered which has the same measurements as the bearing pulled from the tranny in the first place.

 

One very important typo with my type of transmission is its a P20 A000 not an A0000, must've misread it.

 

Yeah I accidentally added and extra 0. Good luck with your repair

 

These two posts seems to coincide with my belief that the A000 casting is the small bearing transmission. The PS0-013 bearing is very likely for the B000 transmission.

Of note, if you find the B000 transmission you will see a performance gain with only a minor fuel efficiency hit. It comes from both the Si and the EX models and is geared shorter.

The following two websites have some pretty detailed information about the various D-series transmissions.

Honda Manual Transmission Specifications & Gear Ratios - Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com

Bense's Gear Specs/Tooth count - D-series.org

If I remember correctly, the '88 d-series trans has a different spline count on the main shaft so will require the '88 clutch and will not fit 89+ clutches.

But other than that, the d-series is pretty interchangeable on d-series motors.

 

Thanks all for the help, I've put im maybe a total of 25 hours over the past two days and the civic lives to see another day. And this time without that horrid grinding noise

 

A000 is the small bearing case, so yes someone did swap the transmission at some point. Civic CX/DX/LX all share the same bearing as the ones you need.

As an aside a lot of people assume that B000 designates an EX/Si D-series transmission. While it's true that all EX/Si transmissions are stamped B000 it's not true that all B000 transmissions are EX/Si. The HX with it's long gear also uses the B000 "big bearing" case for reasons no one seems to understand.