5 speed 5th gear failure?
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5 speed 5th gear failure?
Hi guys, I'm pretty new to the evo world, actually looking to buy an 8 atm. I come from DSM's so I'm pretty familiar with the 4g, but the evo drivetrain is something that I'm still not completely familiar with.
That being said, I'm looking at an evo 8 that has had some tranny issues. All fixed by a reputable evo shop, but I'm trying to decipher the cars previous life. From what I understand the 5 spd are relatively strong. But the owner said 5th gear went out and would start to grind.
Is this common or was this car beat to hell?
Thanks in advance guys.
That being said, I'm looking at an evo 8 that has had some tranny issues. All fixed by a reputable evo shop, but I'm trying to decipher the cars previous life. From what I understand the 5 spd are relatively strong. But the owner said 5th gear went out and would start to grind.
Is this common or was this car beat to hell?
Thanks in advance guys.
#2
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Im not a drivetrain expert however I have had a few owners complain about 5th gear grind and im starting to see that its more common. One of my friends got it b/c he kept getting lock out however few other people got it b/c they were tracking or beating there cars. All I can say is, Im starting to see a trend. #fifthgeargrind
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I've read about the 3rd and 5th issue enough to think it's fairly common in Evo's. It's probably a synchro issue.
#6
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5th gear doesn't have a strong syncro and it wears quickly . The 9 is worse because fourth gear is shorter then the 8 making the gap larger between the two. The evo has one of the highest final drives so the gearbox stays pretty busy and wears out over time.
Get the trans refreshed and adjust the clutch properly and it will be good for a while .
Get the trans refreshed and adjust the clutch properly and it will be good for a while .
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+1 to what abacus said ^^^
Going into 5th on my car grinds if you try and put it in anywhere over 60mph. It has been like that for a while and has not gotten any worse. I have had 2 evos and both with multiple transmission issues that are similar. No surprise to hear what you said about that trans. Rev matching helps. My advice is drive it as is until you are ready to get a shep trans and depending on what clutch you have and how old it is you may want to change that while you are in there. BE SURE TO REPLACE the throw out bearing. Mine seperated into 2 pieces the other day and i had to pull the trans just for the damn bearing
Going into 5th on my car grinds if you try and put it in anywhere over 60mph. It has been like that for a while and has not gotten any worse. I have had 2 evos and both with multiple transmission issues that are similar. No surprise to hear what you said about that trans. Rev matching helps. My advice is drive it as is until you are ready to get a shep trans and depending on what clutch you have and how old it is you may want to change that while you are in there. BE SURE TO REPLACE the throw out bearing. Mine seperated into 2 pieces the other day and i had to pull the trans just for the damn bearing
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#8
I bought a sheptrans stage 1 for my viii. It was actually cheaper than the brand new oem 5 speed. Although the shorter gears make higher rpm for me on the highway, they have also given me an edge on my buddy's stock MR.
Why buy an Evo that you know has problems? Splurge for a used one from a dealer with a power train warrantee! You could save yourself money down the road.
Why buy an Evo that you know has problems? Splurge for a used one from a dealer with a power train warrantee! You could save yourself money down the road.
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Well other than the tranny issue this car seems very well taken care of and well maintained. The tranny was refreshed, and had a new 5th gear put in as well as a new reverse (don't quite know why?) by agile automotive in MD. From everything I've read agile is great to deal with and knows what they're doing. Acd pump has been replaced within the last 40k and was silicone coated so hopefully it should be good for a while yet.. Hopefully. Other than that everything on the car checks out. I'm just trying to get a feel for why the 5th gear would've went. But it's sounding like it's pretty common.
#11
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Well other than the tranny issue this car seems very well taken care of and well maintained. The tranny was refreshed, and had a new 5th gear put in as well as a new reverse (don't quite know why?) by agile automotive in MD. From everything I've read agile is great to deal with and knows what they're doing. Acd pump has been replaced within the last 40k and was silicone coated so hopefully it should be good for a while yet.. Hopefully. Other than that everything on the car checks out. I'm just trying to get a feel for why the 5th gear would've went. But it's sounding like it's pretty common.
As far as the 5th gear in the 5 speeds, the 5th gear only has a single syncro and with the stock gear ratios it has a huge RPM gap between 4th and 5th. Road racing cars particularly have to take the car up into 5th a lot, and even with a high rev limit, the jump from 4th to 5th puts a lot of wear on the syncro which when it goes starts grinding. I broke two stock 5 spd 5th gear syncros in two years before I got a built Shep Stage 2 with the "ultimate ratio" and carbon syncro. I haven't had any grinding or trans issues since then.
I'm not sure which car you are looking at, but the stock ratio 5 spds do have a known failure point with that syncro. If you plan to street/drag the car you likely won't have any problems, if you intend to do track days or road racing you will want to get a TRE/Shep rebuild with the optimal ratio.
#12
My car had no warrantee, but if it did, I would have preferred that over the 3 grand I dropped on that tranny. The oem 5 speed had a great balance between fuel Econ and speed. Money would have helped elsewhere.
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Agile has done every piece of work on my car, so I can vouch for their skill. They have rebuilt a trans for me before as well.
As far as the 5th gear in the 5 speeds, the 5th gear only has a single syncro and with the stock gear ratios it has a huge RPM gap between 4th and 5th. Road racing cars particularly have to take the car up into 5th a lot, and even with a high rev limit, the jump from 4th to 5th puts a lot of wear on the syncro which when it goes starts grinding. I broke two stock 5 spd 5th gear syncros in two years before I got a built Shep Stage 2 with the "ultimate ratio" and carbon syncro. I haven't had any grinding or trans issues since then.
I'm not sure which car you are looking at, but the stock ratio 5 spds do have a known failure point with that syncro. If you plan to street/drag the car you likely won't have any problems, if you intend to do track days or road racing you will want to get a TRE/Shep rebuild with the optimal ratio.
As far as the 5th gear in the 5 speeds, the 5th gear only has a single syncro and with the stock gear ratios it has a huge RPM gap between 4th and 5th. Road racing cars particularly have to take the car up into 5th a lot, and even with a high rev limit, the jump from 4th to 5th puts a lot of wear on the syncro which when it goes starts grinding. I broke two stock 5 spd 5th gear syncros in two years before I got a built Shep Stage 2 with the "ultimate ratio" and carbon syncro. I haven't had any grinding or trans issues since then.
I'm not sure which car you are looking at, but the stock ratio 5 spds do have a known failure point with that syncro. If you plan to street/drag the car you likely won't have any problems, if you intend to do track days or road racing you will want to get a TRE/Shep rebuild with the optimal ratio.
#14
It is correct that the 5th sychro is pretty weak also the "fall on face" ratio of the 8 doesnt help out the situation. Going to the closer ratio evo 9 5th set would definitely be better and would keep the car in boost in the 4-5 shifts
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