Jump to content


Photo

B4 manual gearbox issues


  • Please log in to reply
13 replies to this topic

#1 mark300

mark300

    Regular Member

  • Administrators
  • PipPipPip
  • 3,067 posts
  • Gender:Male
  • Location:Newcastle NSW

Posted 01 August 2011 - 06:40 PM

hoping someone out there might be able to help me!

im looking at buying a b4, looking rather seriously at one in sydney.

i have decided i want a manual, however have been hearing mixed reviews about the gearboxes in them, heard from some saying that they are weak and your more than likely to blow a gearbox, others have said they are fine as long as theres the proper service history.

has anyone out there had any trouble with them or have any opinions of them?

any help would be greatly appreciated!

#2 Evil_VZ-T

Evil_VZ-T

    Regular Member

  • Members
  • PipPipPip
  • 1,014 posts
  • Gender:Male
  • Location:ACT

Posted 01 August 2011 - 06:53 PM

They are as strong as any other 5 speed subaru gearbox. If you dont flat change and be really silly then you will have no probs
MY02 Liberty B4

#3 hawks_123

hawks_123

    Trusted Member

  • Members
  • PipPip
  • 236 posts
  • Gender:Male
  • Location:Eastern Melbourne

Posted 02 August 2011 - 08:00 AM

+1

Never dump the clutch in the dry, even in the wet i put a massive thump through the drivline, and never or do flat changes. I know of a Non turbo Impreza that went bang on a flat change.
Even hard shifts should be fine if you only do it rarely.

Use commonsense and you should be fine.
If it's broke use a cable tie.

#4 AussieTemplar

AussieTemplar

    BMW driver on a Subaru forum

  • Members
  • PipPipPip
  • 2,586 posts
  • Gender:Male
  • Location:Sydney, Australia.

Posted 02 August 2011 - 03:08 PM

Just curious, whats a flat change?

Is that when you change gear without the clutch?

EHUf263.jpg?3

Get out of my thread.

 


#5 B4TT

B4TT

    Soviet Leader

  • Members
  • PipPipPip
  • 39,547 posts
  • Gender:Male
  • Interests:Rodina-Mat

Posted 02 August 2011 - 03:20 PM

Dude I flog the puss out of my B4 gearbox! I have clutch dumped that shit more times than Morgan has taken dumps in his life and it loves it.

I don't flat change or slam gears though.

 


#6 Scuba-Roo

Scuba-Roo

    The local

  • Members
  • PipPipPip
  • 6,960 posts
  • Gender:Male
  • Location:Newcastle

Posted 02 August 2011 - 06:47 PM

Just curious, whats a flat change?

Is that when you change gear without the clutch?

When you change gears without lifting the throttle. Done it a few times in my impreza but I doubt it has any advantages.

My mates STI had a program on the ECU, when his throttle was on 100% and he engaged his clutch the ECU would hold the engine revs at 5500 or 6000 rpm Which meant he didn't loose boost through gear changes. I reckon it felt smoother when he did that then lifting of the throttle. But I'm not sure how he's gearbox liked it.

Unless your gonna be doing massive launches and skidpans every weekend you don't have much to worry about with a stock b4 box.

Subyclub, The place where random internet weirdos become good mates


#7 Shadoxity

Shadoxity

    New Member

  • Members
  • Pip
  • 93 posts
  • Gender:Male
  • Location:Central Coast, NSW

Posted 16 August 2011 - 11:37 PM

Its the same as the wrx 5 speed boxes.

They are strong, its only when retards drive them and dump the clutch (which you should never do, a proper launch you slip the clutch out) and dont treat them well that they blow. (or stupid amounts of power)

You should be fine with it.

#8 Scuba-Roo

Scuba-Roo

    The local

  • Members
  • PipPipPip
  • 6,960 posts
  • Gender:Male
  • Location:Newcastle

Posted 17 August 2011 - 07:07 AM

Its the same as the wrx 5 speed boxes.

They are strong, its only when retards drive them and dump the clutch (which you should never do, a proper launch you slip the clutch out) and dont treat them well that they blow. (or stupid amounts of power)

You should be fine with it.


Same as GC8 WRX box's :) GD WRX's use 4.44 box

Subyclub, The place where random internet weirdos become good mates


#9 Evil_VZ-T

Evil_VZ-T

    Regular Member

  • Members
  • PipPipPip
  • 1,014 posts
  • Gender:Male
  • Location:ACT

Posted 17 August 2011 - 07:17 AM

B4s have 4.11 ratio boxes and a sales gimic was that they have "shot peaned" gears to extra strength
MY02 Liberty B4

#10 BigWillieStyles

BigWillieStyles

    Regular Member

  • Members
  • PipPipPip
  • 469 posts
  • Gender:Male
  • Location:Melbourne

Posted 17 August 2011 - 02:02 PM

My 5speed is still silky smooth. Where did you hear they were weak?

#11 Trent

Trent

    Trusted Member

  • Members
  • PipPip
  • 257 posts
  • Gender:Not Telling

Posted 17 August 2011 - 03:14 PM

Mines fine.

#12 mark300

mark300

    Regular Member

  • Administrators
  • PipPipPip
  • 3,067 posts
  • Gender:Male
  • Location:Newcastle NSW

Posted 17 August 2011 - 08:19 PM

My 5speed is still silky smooth. Where did you hear they were weak?


couple of guys at my dads work tried to tell me they arent that great and that i will more than likely blow it up one day. rang MRT Performance in sydney and talked to them about it and they said theres no such issue, and thought id just ask on here as well, and from what ive heard from now multiple sources theres really no issue with them if you treat them right!

hopefully will be able to lay my hands on a B4 soon now

#13 Trent

Trent

    Trusted Member

  • Members
  • PipPip
  • 257 posts
  • Gender:Not Telling

Posted 17 August 2011 - 09:05 PM


couple of guys at my dads work tried to tell me they arent that great and that i will more than likely blow it up one day. rang MRT Performance in sydney and talked to them about it and they said theres no such issue, and thought id just ask on here as well, and from what ive heard from now multiple sources theres really no issue with them if you treat them right!

hopefully will be able to lay my hands on a B4 soon now


And as long as the person you bought it off treated it right.

#14 Murf B4

Murf B4

    Regular Member

  • Members
  • PipPipPip
  • 320 posts

Posted 17 August 2011 - 11:20 PM


couple of guys at my dads work tried to tell me they arent that great and that i will more than likely blow it up one day. rang MRT Performance in sydney and talked to them about it and they said theres no such issue, and thought id just ask on here as well, and from what ive heard from now multiple sources theres really no issue with them if you treat them right!

hopefully will be able to lay my hands on a B4 soon now



MRT will spin you any yarn to help u spend money, sometimes B4's have a issue getting back into first when rolling or downshifting , i put a nice expensive gear oil in and havent had a drama since , if your box ever does blow , drop in a 6 speed:)

MY02 LIBERTY B4 - LAST DYNO'D @ 375.4KW-ATW    403.5KW-ATW

Next Dyno will be 400+ :)
 





0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users