Rev 3 Turbo Gearbox rebuild

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MR2madlad
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Rev 3 Turbo Gearbox rebuild

Post by MR2madlad » 29/05/18 22:30

Hi fellow MR 2 owners

New to the forums but have owned my mr2 turbo for 16 years racking up 130K miles on her.

I am after some help with regards to gearbox rebuild, I'm planning to have a go and do it myself as 1st and 2nd gear are a real pain to select, even worse when hot, wondering if selector folk if bent or something??

Things I have checked / changed so far, new master and slave cylinder, (slave the spring inside was in 5 bits) bled right through, new gear linkage bushes (solid brass I made at work) and on the actual gearbox there is an arm that swivels and slides with a almost cube block of metal with hole in it that a circular pin sits in this was worn from square 1/4 diagonal, made new one at work during work tut tut !

All did improve it slightly as did the MT-90 gear oil but its never really gone away and always been an issue.

Anyway I have dropped the lot, done a complete engine strip down and rebuild with new parts and gaskets, seals etc as water pump housing to block seal was leaking and clutch slipping + cambelt was overdue for a change, engine is all clean inside and out, painted, new hoses from hell, turbo technics are working on the turbo but engine is ready to go back in so now I though I would tackle the gearbox while I wait for some parts to come in / back.

Anyone have any tips or tricks on how to service the E153 box ? i've stripped most of the bolts off the outer casing and 5th gear cover but can't shift the cover its stuck on tight, resorted to the precision realignment tool (big hammer) in a few safe places with chisel but it won't shift, don't want to damage it so thinking of using my gas torch to warm it up and see if this will help?????

Is there a BGB on the E153 or anyone done a rebuild and have the part numbers and know if Toyota UK even supply the syncros, gears etc.

I have contacted 5 gearbox rebuild people but they never reply or phone back so they obviously either are really busy or this box is a right pain in the butt.

Not wanting to find a replacement used box as its probably worn so would prefer to rebuild it myself as then I know its good (or should be if put back together right)

Thanks

John



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abovetherim
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Re: Rev 3 Turbo Gearbox rebuild

Post by abovetherim » 29/05/18 23:26

If you know how to rebuild a box and have the specific tools for the Toyota box then go for it.
Paul Woods is the man with the knowledge.

If it were me I would just ship it to him and have him do the rebuild and extended 5th gear mod.
1991 rev 1 T Bar n/a 3sge import. A work in progress!!!


notroubleclubber
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Re: Rev 3 Turbo Gearbox rebuild

Post by notroubleclubber » 30/05/18 8:26

Where are u based?
I know tes transmissions in westbury wiltshire will do it as i had a quote from them myself....

Wasnt cheap though


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MR2madlad
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Re: Rev 3 Turbo Gearbox rebuild

Post by MR2madlad » 30/05/18 20:58

Hi

Thanks for the reply's thus far.

Got the covers off, heat worked wonders got 5th gear off made a tool at work again, the countersunk torx bots were a pain thou as was the output shaft lock nut.

There is a lot of very very very fine brass bits in there, gonna go to mr Toyota and see what they can still get, if they can't source the parts, I'll stick it back together (nothing ells touched apart from covers off & 5th) and possibly contact Paul who was mentioned.

I'm in Burgess Hill, West Sussex.

Lets see what happens, does not look to be a complicated rebuild, will need to buy a low force torque wrench for the preload and maybe a puller, parts are gonna be the issue I thinks

Not sure how to upload photos, am I able to?

Thanks

John


rgb
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Re: Rev 3 Turbo Gearbox rebuild

Post by rgb » 30/05/18 22:06

I had mine fully rebuilt for 1700 quid . everyone recons I got ripped of but that's the price genuine Toyota parts and a specialist .make you own mind up.


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MR2madlad
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Re: Rev 3 Turbo Gearbox rebuild

Post by MR2madlad » 12/06/18 22:40

Hi everybody

Got the box totally stripped down to component parts except dif, pretty easy with a decent puller.

Ordered all the bits I think need replacing from Toyota, gonna cost a kidney - 20% discount.

Just washed the whole lot in dishwasher, came up lovely, got rid of all the horrible grey black residue all over the inside, cleaned oil pump and pipes etc

Been wire brushing the ali castings with stainless steel wire brushes and scotchbright to remove as mush of the ali oxide as possible, been hell but finally its back to shiny metal ready for quick rub over with fine pad and wipe then spray paint.

Waiting for the bits to arrive from Japan at end of month.

Will reply with my progress once all the bits arrive.

Cheers

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