|
14-12-2004, 10:03 PM | #1 |
Senior Member
Join Date: Jul 2002
Location: .
Car: .
Posts: 1,789
|
Gearbox Tough to change to 1st & Rev. Oil?
Hi guys
Don't venture into this section very often, probably should. Anyway, my gearbox is playing up. It's very tough to get into reverse, and on some occasions 1st gear. I'm concerned it's a terminal problem, however have been reading about gearbox oils and people having problems with the box being "notchy" as such, could it just be my g/box needs some good oil? What oils do you recommend for the humble F-Series box? |
Sponsored Links |
14-12-2004, 10:25 PM | #2 |
Administrator
Join Date: Mar 2002
Location: melb.vic.au
Car: AZ-1, Astina Hardtop Turbo, BJ Protege, Beetle
Posts: 16,525
|
probably is getting a bit low - it doesn't get changed at a service often.
if reverse is a pain, start the car in reverse (if the situation dictates it) i'm using Castrol Syntrax 75W90 i think it is - about $25 for 1L...and you'll need 3 (well 2.86 to be exact)
__________________
jdmparts.rupewrecht.com Sourcing your not-quite-overnight parts from Japan WRECHT--|--SLOWTEGE--|--BEETLE--|--SUBSTITUTE--|--AZ-1 |
14-12-2004, 10:29 PM | #3 |
Senior Member
Join Date: Jul 2002
Location: .
Car: .
Posts: 1,789
|
Thanks, might go down pick some of that up in the new year and have a crack with the oil first.
Reverse is a pain, but I have been finding that if it won't go into reverse, changing into 4th then reverse normally see's it right :shock: |
15-12-2004, 10:04 AM | #4 |
Junior Member
Join Date: Dec 2004
Location: none
Car: none
Posts: 44
|
Daughters BG was a bitch to get into 1st, 2nd and reverse.
Changed the oil in the box which came out an emulsified green colour and smelt terrible Replaced with VMX80 and it is now as smooth as The front change bushes are on the way out and the clutch is wearing but it's all good |
15-12-2004, 10:08 AM | #5 |
Senior Member
Join Date: Jul 2002
Location: .
Car: .
Posts: 1,789
|
I'll probably need to do the clutch at a later stage too, but I think if the oil doesn't change it I'll just have someone look at the g/box.
|
15-12-2004, 10:21 AM | #6 |
Senior Member
Join Date: Feb 2003
Location: Edinburgh, Scotland
Car: A Mazda 323F BJ Sport.
Posts: 1,064
|
how often should the oil be changed anyway? :?
i haven`t done mine in the 4 years i`ve had the car!!!! ops: |
15-12-2004, 11:02 AM | #7 |
Junior Member
Join Date: Dec 2004
Location: none
Car: none
Posts: 44
|
Depends
Transmission type Use (and abuse) history Many say every year or at least every 25,000 km. Also, if shifting gets hard, time to change. |
15-12-2004, 11:28 AM | #8 |
Senior Member
Join Date: Mar 2002
Location: -37.561609, 143.854814
Car: 2013 Mazda 6 GT Sedan - Soul Red
Posts: 3,517
|
I need to change mine too, but double clutching is fun at the moment!!
AP
__________________
2013 Mazda6 Diesel GT ------------------------------------------------------------------------------------------------------------------------------[Formerly] 2004 Mazda6 Luxury Sport |
15-12-2004, 12:31 PM | #9 | |
Senior Member
Join Date: Apr 2004
Location: SE QLD, Australia
Car: Turbo BG Astina
Posts: 792
|
Quote:
__________________
BG Astina + GTR conversion + Microtech ECU + FMIC + 3" pipes and Exhaust x 21psi boost = 12.168 to the power of 326whp |
|
15-12-2004, 12:40 PM | #10 |
Senior Member
Join Date: Jul 2002
Location: .
Car: .
Posts: 1,789
|
Thansk for your help guys
|
18-12-2004, 07:15 AM | #11 |
AstinaGT Regular
|
I'm guessing thats whats wrong with mine aswell, dodgy mechanics
1 Gearbox was fine. 2 Goes in for service 3 Gearbox is crap Getting into reverse can be hard, like i need to put it in neutral release the clutch then put it back in and then it'll go into reverse. Downshifting, 4th-3rd fine 3rd-2nd fine 2nd-1st friggen hard.
__________________
Car: BG Astina Head Unit: JVC KD-SH77 Front Amp: Blaupunkt GTA4100 Sub Amp: Jaycar 4x100 Front: Boston Rally Splits Sub: Diamond Audio M3151.8 15" 138.9dB @ 59Hz on Termlab Trigun Motorsport |
18-12-2004, 08:19 AM | #12 |
Senior Member
Join Date: Feb 2003
Location: Edinburgh, Scotland
Car: A Mazda 323F BJ Sport.
Posts: 1,064
|
you should wait till the car is at a complete standstill before changing from second to first.
mine is sometimes a bit reluctant to go into reverse, but it goes in no probs if i try it while letting the clutch up very slowly. :wink: who makes the VMX80 oil then guys? any other recommendations? |
18-12-2004, 08:54 AM | #13 |
Junior Member
Join Date: Dec 2004
Location: none
Car: none
Posts: 44
|
Castrol - it's cheap but good for older boxes.
|
18-12-2004, 09:28 AM | #14 |
コスモ
Join Date: Dec 2002
Location: Location: Vic
Car: Mazda '95 Astina I4, '86 B2K and '10 3 MZR-CD
Posts: 7,888
|
Few gearboxes have syncro into first or reverse, Mazda did put syncro reverse into some vans in an effort to reduce courier based warantee claims.
__________________
My 'stina Hatch |
18-12-2004, 05:28 PM | #15 |
living in the past man
|
i still don't know where to find the damn fill hole....
but i need to change mine out... i have polyurethane shift bushings, gearbox is very prescise, but with age is becoming a bit too stiff now - i neeed oil... hold on i'm not doing anything, i'm going down to Kmart now
__________________
1997 BG5 Subaru Outback - Now with STI boost... |
18-12-2004, 05:47 PM | #16 | |
GSL RallySport
Join Date: Mar 2004
Location: Brendale QLD!!!
Car: Cross 6
Posts: 1,835
|
Quote:
__________________
- GSL RallySport - Ph: 1300 884 836 -
Sick of paying too much for high performance brake pads? Want high performance and cold bite with low rotor wear? - QFM Performance Brake Pads - Also specialising in - DMS High Performance Shock Absorbers - Monit Rally Computers - |
|
18-12-2004, 05:54 PM | #17 | |
GSL RallySport
Join Date: Mar 2004
Location: Brendale QLD!!!
Car: Cross 6
Posts: 1,835
|
Quote:
Um... synchro's have nothing to do with how a gear engages at standstill... NO gearbox should be having synchro's on reverse because that would mean its designed to engage reverse while the car's still moving foward... synchro's spool up the input shaft to output shaft speed to that in a helical cut gearbox the gears will engage... the reason reverese is hard to engage in ANY car (especially late model subaru's), is because even in a helical cut gearbox (what EVERY car comes with)... reverse gear is still a straight cut (as in a dog box style gear)... that's why both reverese gear and cars with a dog box make that whining noise... because its a striaght cut it means the gears must line up near to exact for it to be able to engage.. and the law of random doesn't always permit this to happen first time.... personally my recommendation for problem gearboxes is a product called Roil... but we wont go there... :wink:
__________________
- GSL RallySport - Ph: 1300 884 836 -
Sick of paying too much for high performance brake pads? Want high performance and cold bite with low rotor wear? - QFM Performance Brake Pads - Also specialising in - DMS High Performance Shock Absorbers - Monit Rally Computers - |
|
18-12-2004, 06:26 PM | #18 | |
コスモ
Join Date: Dec 2002
Location: Location: Vic
Car: Mazda '95 Astina I4, '86 B2K and '10 3 MZR-CD
Posts: 7,888
|
Quote:
They won't syncro at speed but have you ever tried to change from 5th to 2nd (it don't work cleanly and they are syncro). The choice between helical and hypoid cut gears is a compromise between noise and strength and has SFA to do with syncro.
__________________
My 'stina Hatch |
|
18-12-2004, 07:02 PM | #19 | |||
GSL RallySport
Join Date: Mar 2004
Location: Brendale QLD!!!
Car: Cross 6
Posts: 1,835
|
Quote:
Quote:
Quote:
by your theory your saying that its just a fluke that every helical cut box comes with synchro... even the ex Mitsubishi Works Galant Rally car i flogged for a day 3 weeks ago had a competition gearbox, but was still running synchro's... y?... cause it was a helical cut gearbox... had it have had a staight cut dogbox (like bryce racing developments WRX rally car i drove 12 months ago)... then it wouldn't have synchro's and i wouldn't have needed the clutch... every helical cut gearbox has synchros.. and every dogbox doesn't... its got nothing to do with a noise comprimise, its how the gears mesh...
__________________
- GSL RallySport - Ph: 1300 884 836 -
Sick of paying too much for high performance brake pads? Want high performance and cold bite with low rotor wear? - QFM Performance Brake Pads - Also specialising in - DMS High Performance Shock Absorbers - Monit Rally Computers - |
|||
18-12-2004, 07:06 PM | #20 | |
GSL RallySport
Join Date: Mar 2004
Location: Brendale QLD!!!
Car: Cross 6
Posts: 1,835
|
Quote:
maybe in the newcastle novacatrian street racing seen striaght cut gears are a comprimise between strength and noise.. but certainly not in the real world...
__________________
- GSL RallySport - Ph: 1300 884 836 -
Sick of paying too much for high performance brake pads? Want high performance and cold bite with low rotor wear? - QFM Performance Brake Pads - Also specialising in - DMS High Performance Shock Absorbers - Monit Rally Computers - |
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Funny things you've been sent lately... | Rupewrecht | Off Topic | 2682 | 16-05-2016 05:31 PM |
HOW TO: Change your Gearbox oil | mrpayner | Performance & General Maintenance | 62 | 05-04-2013 09:00 PM |
Gearbox oil change | Eire323f | Performance & General Maintenance | 10 | 07-02-2007 10:10 AM |
Oil and water don't mix - except in a gearbox ! | wazza | Performance & General Maintenance | 6 | 08-12-2004 04:33 PM |
gearbox oil | sirex | Performance & General Maintenance | 11 | 25-03-2004 10:56 PM |