MRTurbo
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RE: robk's MR2 Turbo
2012/07/19 09:24:02
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My first thought is - wow you must have been REALLY moving to wind out 4th...lol
I really don't like the sound of "quite a lot of fluid sprayed".....:(
It sounds like you've blown-up 5th gear and its possibly cracked its housing/case and leaked out some fluid.
I wouldn't drive it if you don't HAVE to either.
At least now you can whack a Quaife in it. :)
1990 SW20 GT 3S-GTE Targa 2001 Honda CBR600F4i 
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Mrskylighter
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RE: robk's MR2 Turbo
2012/07/19 09:33:12
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Sorry to hear that man.
I've had an E153 just fail out of the blue about 8 years ago. Something just shat itself inside and left it all crunchy and not engaging gears properly.
A used LSD e153 solved all my problems and was a big improvement shifting wise (Extra synchros or whateva its got)
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robk
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RE: robk's MR2 Turbo
2012/07/19 09:59:08
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MRTurbo
My first thought is - wow you must have been REALLY moving to wind out 4th...lol
I really don't like the sound of "quite a lot of fluid sprayed".....:(
It sounds like you've blown-up 5th gear and its possibly cracked its housing/case and leaked out some fluid.
I wouldn't drive it if you don't HAVE to either.
At least now you can whack a Quaife in it. :)
I didn't wind out 4th, I upshifted quite early to 5th. Yeah the sprayed fluid is very worrying. I'm very puzzled as to how that would relate to 1 or 2 of the gears not working, and the remaining 4 gears working fine. It could quite possibly be a cracked gearbox casing. I just don't know how that ties in with the symptoms. I was thinking of getting a Quaife haha, and I may do that, but I'll have to decide if I'm willing to part with the additional funds. Mrskylighter
Sorry to hear that man.
I've had an E153 just fail out of the blue about 8 years ago. Something just shat itself inside and left it all crunchy and not engaging gears properly.
A used LSD e153 solved all my problems and was a big improvement shifting wise (Extra synchros or whateva its got)
Will the gen 3 e153 box bolt straight up to my gen 2 engine? Regardless of whether it has an LSD?
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MRTurbo
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RE: robk's MR2 Turbo
2012/07/19 10:43:56
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robk
Yeah the sprayed fluid is very worrying. I'm very puzzled as to how that would relate to 1 or 2 of the gears not working, and the remaining 4 gears working fine.
It could quite possibly be a cracked gearbox casing. I just don't know how that ties in with the symptoms.
I was thinking of getting a Quaife haha, and I may do that, but I'll have to decide if I'm willing to part with the additional funds.
Don't quote me on this but 5th and reverse gears (I think) are 'seperate' to the rest of the main gears, housed in a case bolted on to the 'main' section. So that might explain why 1st to 4th still works but 2 gears (reverse and 5th) do not. eg. 
1990 SW20 GT 3S-GTE Targa 2001 Honda CBR600F4i
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robk
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RE: robk's MR2 Turbo
2012/07/19 10:54:21
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Ohhhh, that's very useful info thanks!! I think you may be correct, as that would explain the symptoms. I'm guessing that the 5th/reverse part of the casing (removed in the above photo if I understand) has probably cracked, and the main casing may be OK. The selector fork and/or 5th gear are probably damaged within that end part of the casing.
post edited by robk - 2012/07/19 10:59:22
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Mrskylighter
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RE: robk's MR2 Turbo
2012/07/19 11:07:40
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Yep the late model E153 gearbox will bolt up no worries. The only difference is that your passenger side axle stub won't fit. The spline section either needs to be machined down or you buy the correct stub. If the diff was changed to something else (TRD, quaife etc) than your stock axles might be okay. If you have a mechanical speedo you just swap the sender over to the new box (Which has a an elec sender standard) robk
MRTurbo
My first thought is - wow you must have been REALLY moving to wind out 4th...lol
I really don't like the sound of "quite a lot of fluid sprayed".....:(
It sounds like you've blown-up 5th gear and its possibly cracked its housing/case and leaked out some fluid.
I wouldn't drive it if you don't HAVE to either.
At least now you can whack a Quaife in it. :)
I didn't wind out 4th, I upshifted quite early to 5th.
Yeah the sprayed fluid is very worrying. I'm very puzzled as to how that would relate to 1 or 2 of the gears not working, and the remaining 4 gears working fine.
It could quite possibly be a cracked gearbox casing. I just don't know how that ties in with the symptoms.
I was thinking of getting a Quaife haha, and I may do that, but I'll have to decide if I'm willing to part with the additional funds.
Mrskylighter
Sorry to hear that man.
I've had an E153 just fail out of the blue about 8 years ago. Something just shat itself inside and left it all crunchy and not engaging gears properly.
A used LSD e153 solved all my problems and was a big improvement shifting wise (Extra synchros or whateva its got)
Will the gen 3 e153 box bolt straight up to my gen 2 engine? Regardless of whether it has an LSD?
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robk
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RE: robk's MR2 Turbo
2012/07/19 11:19:15
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Mrskylighter
Yep the late model E153 gearbox will bolt up no worries. The only difference is that your passenger side axle stub won't fit. The spline section either needs to be machined down or you buy the correct stub. If the diff was changed to something else (TRD, quaife etc) than your stock axles might be okay.
If you have a mechanical speedo you just swap the sender over to the new box (Which has a an elec sender standard)
Thanks Nick! I didn't think of the speedo. I do have a mechanical speedo, and I have no intention of converting to electronic. So, are you saying that the mechanical speedo sender can fit straight into the same spot as the electronic sender on a gen 3 gearbox? I'm not sure how much of this will be relevant in the end, but if I plan ahead now I will hopefully prevent unnecessary delays.
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Mrskylighter
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RE: robk's MR2 Turbo
2012/07/19 11:33:30
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Yep the speedo sender is a direct swap. Done it myself on my last car and my current AW11 has it done also.
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-Totenkopf-
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RE: robk's MR2 Turbo
2012/07/19 19:02:40
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The picture that was posted was of 5th gear. 5th gear is housed in the top section of the gearbox. I can almost guarantee that the 5th gear selector fork (that alumiumin sort of Y shape thing) has broken. You can easily check this by removing that end part of the housing (very simple, should be able to even get it off with the box in the gear).
Reverse is deeper in the box, however, is controlled by the same gear shift 'shaft' (steel rod that shift fork is bolted to, goes all the way down through the transmission). If the 5th gear fork has broken it may be fouling the operation of reverse gear.
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robk
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RE: robk's MR2 Turbo
2012/07/19 21:35:23
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Thanks Totenkopf, more great info!
It sounds like my existing gearbox may be repairable, but I've talked to Dylan and he has an LSD e153 gearbox if I need it. He has offered a decent price, so there is a good chance I'll buy it. That way I'll have an LSD instead of an open diff (and not have to spend extra for a Quaife), and I guess it will have the revised synchros too. Apparently the box only has about 80,000km on it too, which is great if it's legit.
Does anyone have a spare 'left stub axle' that you need when changing from a non-LSD to an LSD transmission?
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MR2QIK
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RE: robk's MR2 Turbo
2012/07/19 21:39:26
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Thought you had an LSD box. Since you don't, it's a blessing in disguise.
MR2QIK - "The Little Car That Could"  320rwkw @ 19psi (pump fuel, no giggle gas) 11.96 @ 116mph (with 228rwkw)
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MRTurbo
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RE: robk's MR2 Turbo
2012/07/19 23:14:42
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Did it get all that power down ok with the open diff though ? predictable?
I find my car (open) with a relatively stock motor has trouble sometimes with 595 RS-Rs on the back... :/
1990 SW20 GT 3S-GTE Targa 2001 Honda CBR600F4i
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robk
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RE: robk's MR2 Turbo
2012/07/20 10:03:08
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If I floor it in 1st gear with the car pointing straight ahead, the tail sometimes starts to go sideways immediately, and it freaks me out having that thought in the back of my mind when driving through twisties lol. It's easy to correct, but if I had an LSD it probably wouldn't happen in the first place.
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MR2QIK
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RE: robk's MR2 Turbo
2012/07/20 10:19:13
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Certainly don't bother with the current box anymore. The newer revised boxes/synchros should be bliss. If you want to have the box looked over before you install it, I can put you in contact with my gbox rebuilder (Gearbox Express).
MR2QIK - "The Little Car That Could" 320rwkw @ 19psi (pump fuel, no giggle gas) 11.96 @ 116mph (with 228rwkw)
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MIDN1T3
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RE: robk's MR2 Turbo
2012/07/23 12:59:52
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Hey Rob, don't place too high hopes on how the LSD box will operate under your power - I only say this as I've got the LSD Box and even with my stock gen 3 power, on wet roads it'll go sideways with BOTH wheels spinning if I mash the accelerator in first gear.
I had the previous gearbox without LSD when I had the N/A engine, and it tended to spin up one wheel when pushed hard around corners or take-offs.
Don't get me wrong, the LSD box is AWESOME as you get power to the ground better around corners and takeoffs and would reccomend anyone with an MR2 turbo to get one - but you still can go sideways when pushed (especially with your power too).
1990 SW20 MR2 N/A with 1994 Gen 3 GTS 3S-GTE swap.
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