Rebuilt my B20A Transmission!

[RobT5580]

I decided since my car is down to clean up and replace the seals and needed bearings on my F2K5 transmission. I tore it all down and bead blasted the housing, then cleaned everything in a parts washer. I replaced the axle seals, plug seals, bearings (from Japan that i purchase years ago), release spring, throw out bearing. Cleaned and tapped all the threads to make sure they were clean. I still have my spare F2K5 which i want to swap longer gears in since it is not ideal for a boosted car.

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[RobT5580]

http://i637.photobucket.com/albums/uu98/RobT5580/Picture349.jpg
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[A18A]

fooking mint! i wish my gearbox looked even half as good as that on the inside, and with a LSD lol

[RobT5580]

I painted it a while back to match my turbo B20A block which looked bad so i decided to strip it all down while its out. The LSD was a good purchase although at a price but definitely needed for what i wanted.

[Dr_Snooz]

Rob, I really appreciate the care and attention to detail in everything you do. I can't wait to see the finished car.

[AccordB20A]

the only b20 gearbox thats not gunna fail because of a diff pin lol. are the internals the same as a cable b16a box? they look like they might be simular on the inside but i dont have boxes to compare

[rjudgey]

Nice work! Is that a Quaife LSD? love the attention to detail need to do this to one of mine somepoint soon when I get a decent B20A built. Or even my Teg hybrid box could do with a LSD now and maybe some new 3-4th syncro's seem ok at the moment but I don't think they'll be last too long with the new power I'm putting down.

[MessyHonda]

man that is one clean haul over

[Tdurr]

Wanna clean up a stock tranny for me?

Haha looks great man. Much hate

[2oodoor]

spectacular thread and pics, thank you!

[2ndGenGuy]

Killer work there man! Looks so good!

[ecogabriel]

Amazing job man!

Besides the rebuilt, taking the pain to clean the housing the way you did... fantastic.

[Tomisimo]

Impressive!! Rob, where did you source your parts?

[RobT5580]

All the seals were sourced in the US mostly from a Integra but all the part numbers on on here in carotmans thread. It was time consuming bead blasting it but it looks 100X better than the peeling paint. Plus i had some down time to get some of the low cost things checked off my list. On the flip side i will need a new clutch for the new build which won't be cheap but i will run a stock B20A flywheel this time rather than the light weight B20A5 Fidanza.

[87roach]

Wow! Clean, great work there.

[hondalude86]

damn thats pretty fuckin clean

[obdriver6]

That is one CLEAN A** transmission!

[carotman]

Great job!

[bullard123]

All the seals were sourced in the US mostly from a Integra but all the part numbers on on here in carotmans thread. It was time consuming bead blasting it but it looks 100X better than the peeling paint. Plus i had some down time to get some of the low cost things checked off my list. On the flip side i will need a new clutch for the new build which won't be cheap but i will run a stock B20A flywheel this time rather than the light weight B20A5 Fidanza.
Yes me too lol...What kind of clutch you running now?? I thought you were running a stage 2 with the Fidanza flywheel

[RobT5580]

When i pulled it apart i noticed a lot of crud in the housing and found that my Clutch Stage 4 was overlapping the flywheel a little bit and created a high spot on the friction disc. I was running a B20A5 Fidanza Flywheel and CM Stage 4 setup so i don't know why it would overlap like that. With that said i did have a spring fall out into the clutch early on and CM replaced it no questions asked. So i think this time i will go to the stock B20A flywheel since it would not create the overlap issue i had. Otherwise i did like that setup but the spring failure was strike one now i notice this issue with the fidanza so im not sure what i will run for a clutch this time around.

[RobT5580]

BTW: I did not have any complaints on pedal feel with the CM stage 4 so i would not rule it out but given what i spent on the parts im not sure where i will go this route.

[bullard123]

BTW: I did not have any complaints on pedal feel with the CM stage 4 so i would not rule it out but given what i spent on the parts im not sure where i will go this route.

Ok cool. That thing is gonna be a real beast when you are done!! That tranny turned out awesome! Do you have a spare??

[2drSE-i]

Good lord man! You could eat off of that thing!

[mykwikcoupe]

One true statement about Robs project, when he cleans up a car, it is clean!

[RobT5580]

I do have a spare that is being rebuilt as well but that one seemed to have an issue with 5th and reverse when i bench tested it. I plan to try to swap in different gears since i find them to be to close for a boosted car. Its already torn apart but i want to keep focused on the chassis and the turbo build so i can finish it in my lifetime.

The biggest obstacle has been finding parts. Fortunately im a hoarder of car parts so i can atleast get this build done and have some spares but its not as easy as it was 5 years ago when i could place an order directly to Japan.

[AccordB20A]

^^compared the b20a boxes to a y1/s1/j1 cable b series box yet? they look the same inside

[RobT5580]

Not yet i wish i did because i realize even those are hard to find these days but i am not worried about that yet. I would be happy to drive what i have. I should be working on some new stuff soon i took on a big project to work off the paint job and that should be wrapped up soon.