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80 series gearbox

Tech Talk for Cruiser owners.

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80 series gearbox

Post by feno »

Bought an 80 series DX reciently with a 1HZ and 5 speed gearbox. The box won't shift back to 2nd from 3rd unless giong REALLY slow and i want to fix it. What are my options? I have been told that the GXL box's are different cause of constant 4wd. Is this true? Will a HJ75 Ute or troopy box bolt up the same or do i need DX 80 series specific?


Cheers!
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Post by 80's_delirious »

change the oil.
Castrol VMX-M 75w80
RN wrote:pussy is out, its the log for me... Thank you Jesus.
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Post by feno »

your not the first bloke that says that.I'll give it a try.
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Re: 80 series gearbox

Post by Winglessjet »

feno wrote:Bought an 80 series DX reciently with a 1HZ and 5 speed gearbox. The box won't shift back to 2nd from 3rd unless giong REALLY slow and i want to fix it. What are my options? I have been told that the GXL box's are different cause of constant 4wd. Is this true? Will a HJ75 Ute or troopy box bolt up the same or do i need DX 80 series specific?


Cheers!

I'm in much the same boat with my 91 gxl but i think mine is a lil worse than yours sounds :cry: Around up here (Townsville) i have been quoted $2500 for an exchanged reco box. I had the same idea with using a ute or troopy box as i have been told that they have single syncro box and they don't have the probs like the double syncro 80series boxes do. Is it worth looking into or am i better to just pay the $2500 for a reco box?

PS Sorry for hijacking your thread :lol:
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Post by Toli »

80's_delirious wrote:change the oil.
Castrol VMX-M 75w80
I will add a

+1

and a +1 for a guy at work.

We both changed to it and the gear box is a lot smoother now.
Dave, Nat, Braiden, Ethan and now Elizabeth

Bye Bye 80 Series............Hello XR6T
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Post by flyinwall »

i too had the same problem and so did another person and we both put VMX80 into our boxes and problem fixed so go the VMX80
R.I.P. Darryl "DAZZA" Mutch 02/08/1978 - 26/08/2012 aged 34 years ... You will be missed my little brother.

http://www.outerlimits4x4.com/viewtopic.php?f=16&t=39190&start=150
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Post by 80's_delirious »

change the oil before you shell out $2.5 large!!

I was almost ready to do a rebuild 18months ago. changed the oil as last resort and have been amazed at the difference. Im going to refresh the oil this weekend, 1st oil change after doing about 30,000k since I changed to the Castrol oil.
It took a couple of weeks driving for the Castrol oil to work right through the box and loosen everything up. Has been all good since then. Other people have recommended changing the Castrol gearoil every 10k. Im not quite that fanatical.

$30 bucks for oil vs $2500 for rebuild? hmmm. . . . I know what Id do first.
RN wrote:pussy is out, its the log for me... Thank you Jesus.
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Post by 80's_delirious »

80's_delirious wrote:change the oil.
Castrol VMX-M 75w80
just looked at this. the VMX-M is actually 75w85
RN wrote:pussy is out, its the log for me... Thank you Jesus.
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Post by Stuart McMurtrie »

[quote="80's_delirious
just looked at this. the VMX-M is actually 75w85[/quote]

The M part of the VMX-M is widely touted as being a special formulation made up for a problem Mitsubishi had with their boxes. Lucky thing is that it is also great on 80 series boxes.

cheers
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Post by feno »

Thanks for the imput guys. I changed the oil last night to VMX-M, and noticed the difference straight away. Hasnt fixed the problem but a good improvement. I only do 11klms to work so hasnt really had a chance to work in but i'm going up the Watto's for the lonbebit a g so hopefully it gets beta. I'll keep u posted.
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Post by Froon »

Silly question, got the same problem with my 80 series box (to a much lessor extent)... Not entirely sure how to go about changing the oil... where is the drain plug located? Where is the filler located?

Cheers,
Dean
[quote="fool_injected"]
For once I don't have a smart arse retort, usally I\m pretty handy :lol:[/quote]
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Post by Froon »

Nevermind I RTFMed. :)
[quote="fool_injected"]
For once I don't have a smart arse retort, usally I\m pretty handy :lol:[/quote]
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Post by bj on roids »

80's_delirious wrote:change the oil.
Castrol VMX-M 75w80
I was at Super Heap the other day and they had

Castrol
VMX - Manual
80

Is this the right stuff? (As per castrol recommendations it is)

But I wanted to make doubly certain that there is not another type called 75w80 or something!?!?
hands and mums dont count!!!
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Post by Winglessjet »

Nah mate it is VMX-M 75W85 as stated above. I changed the oil and it does make a big difference to the box much lighter and smoother when it is cold but when mine heats up abit the ugly gear clash still pops its head up. :cry:
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Post by 80's_delirious »

Winglessjet wrote:Nah mate it is VMX-M 75W85 as stated above. I changed the oil and it does make a big difference to the box much lighter and smoother when it is cold but when mine heats up abit the ugly gear clash still pops its head up. :cry:

As above. checked the bottle in the shed ;)

the M on the end is important. VMX-M was developed to fix problems with lube in Mitsibishi sp? (bittsashitty) gearbox, hence the "M"
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Post by bj on roids »

im off to coventry this arvo then :(
hands and mums dont count!!!
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Post by Froon »

I mistakenly picked up the VMX 80 last night, got the VMX-M today... The oil rating is not listed on the VMX 80, can it be used in anything (GQ or 4runner maybe?)
[quote="fool_injected"]
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Post by icrawl »

guys u can buy a brand new factory toyota box from ballarat toyota for about $2800 give them a call
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Post by 80's_delirious »

icrawl wrote:guys u can buy a brand new factory toyota box from ballarat toyota for about $2800 give them a call
$2800 for new box vs $30-40 a year on new oil that will give me a few more years out of the old box

hmmm let me see . . . . . .







what will I spend my left over $2760 on??? :D :D
RN wrote:pussy is out, its the log for me... Thank you Jesus.
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Post by 80's_delirious »

Froon wrote:I mistakenly picked up the VMX 80 last night, got the VMX-M today... The oil rating is not listed on the VMX 80, can it be used in anything (GQ or 4runner maybe?)
if the bottle is still sealed take it back for a refund or credit
RN wrote:pussy is out, its the log for me... Thank you Jesus.
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Post by croozaman »

Are the gearboxes all the same in 80`s, ie Turbo and non the same? My Turbo 80 box is a bit average on the 1-2 shift when cold, if it is the same will change to this oil and see if it helps
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Post by Stuart McMurtrie »

Different ratios in first and second, maybe reverse too.
However they are all constructed the same and will all benefit from VMX-M
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Post by mud80 »

Any update????
80 Series, locked and lifted, 35", high mount, ect.

Why is abbreviation such a long word?
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Post by feno »

mud80 wrote:Any update????


Yep. Been using the castrol VMX-M in the gear box. Done about 3,000 klms since changing and very satisified. After it wore it self through properly i really noticed the difference. I'll drop it out at 10'000 and replace with fresh VMX-M.
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Post by bj on roids »

VMX-M is the stuff, makes it quieter and shift nicer too than heavier oils
hands and mums dont count!!!
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