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Yet Another 2nd Gear Grinding Issue

LexDelta
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LexDelta Explorer

LexDelta

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Well Im the proud owner of my first Skyline, a R33 GTS-t 2.5lt.

I haven't had it that long, but Ive come across my first issue, which is 2nd gear grinding, whether its from 1st>2nd or 3rd>2nd there is a considerable amount of grinding before the gear goes in. :(

It started happening yesterday when I was driving it home from work, I tryed changing down from 5th to 4th ato take a bend and 4th gear instantly grinded and wouldnt go in, after than I had trouble getting any gear in, so I slowed it right down and managed to get into 2nd with a little grind, then after that I could change back up the gears fine. But when I got to an intersection I changed down and when I got to 2nd it grinded again. Now it keeps grinding when I try to get into 2nd.

It does get there, but I really dont like driving it when this is happening, it feels like Im damaging it every time I have to go to 2nd. ;)

I took it out today to try double clutching it, and changing to 2nd at lower or higher rpms, but that didnt seem to help no matter what I did, altho by the end of my drive (~10mins) when the car was starting to warm up it seemed to improve slightly- much less crunch, but still bad.

Ive read a few threads here about the issue, so sorry for posting another, but Id like some more direct advice on what to do.

Ive heard of people replacing their spigot and thrust bearings, and some others replacing the gearbox oil, while even another person got thier ECU tuned and that fixed it.

Im just really hoping it wont be anything major, like a gearbox replacement or rebuild, because I really dont have the money or time for something that major right now...

Im getting the ECU re-tuned next week anyway, so I will have to speak to the mechanic about looking at the issue, but any advice or experiences you guys have would be appreciated so I can get a heads up. :D

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Craig SLO33 Enthusiast

Craig SLO33

Posted
Posted
Well Im the proud owner of my first Skyline, a R33 GTS-t 2.5lt.

I haven't had it that long, but Ive come across my first issue, which is 2nd gear grinding, whether its from 1st>2nd or 3rd>2nd there is a considerable amount of grinding before the gear goes in. ;)

It started happening yesterday when I was driving it home from work, I tryed changing down from 5th to 4th ato take a bend and 4th gear instantly grinded and wouldnt go in, after than I had trouble getting any gear in, so I slowed it right down and managed to get into 2nd with a little grind, then after that I could change back up the gears fine. But when I got to an intersection I changed down and when I got to 2nd it grinded again. Now it keeps grinding when I try to get into 2nd.

It does get there, but I really dont like driving it when this is happening, it feels like Im damaging it every time I have to go to 2nd. :)

I took it out today to try double clutching it, and changing to 2nd at lower or higher rpms, but that didnt seem to help no matter what I did, altho by the end of my drive (~10mins) when the car was starting to warm up it seemed to improve slightly- much less crunch, but still bad.

Ive read a few threads here about the issue, so sorry for posting another, but Id like some more direct advice on what to do.

Ive heard of people replacing their spigot and thrust bearings, and some others replacing the gearbox oil, while even another person got thier ECU tuned and that fixed it.

Im just really hoping it wont be anything major, like a gearbox replacement or rebuild, because I really dont have the money or time for something that major right now...

Im getting the ECU re-tuned next week anyway, so I will have to speak to the mechanic about looking at the issue, but any advice or experiences you guys have would be appreciated so I can get a heads up. :cool:

sounds like it "could "be as simple asthe syncro's ,which help the gears engage smoothly, when shifting..id take it to a good gearbox specialist and get them to give it a look.If they know about skyline boxes it would be good.....

LexDelta Explorer

LexDelta

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sounds like it "could "be as simple asthe syncro's ,which help the gears engage smoothly, when shifting..id take it to a good gearbox specialist and get them to give it a look.If they know about skyline boxes it would be good.....

Yeh I phoned my mechanic (who specializes in skylines) and that was the first thing he said it could be...

He'll have a look at it before he retunes the ECU (no point doing that if the syncro's are out)

Any idea of the costs I may be up for to fix that? If it is the issue...

I know the guy who had it before me recently upgraded the clutch and while he was doing that got the main bearings fitted in the gearbox, along with a few other things. So it makes me wonder why this issue has happened so soon.

Craig SLO33 Enthusiast

Craig SLO33

Posted
Posted
Yeh I phoned my mechanic (who specializes in skylines) and that was the first thing he said it could be...

He'll have a look at it before he retunes the ECU (no point doing that if the syncro's are out)

Any idea of the costs I may be up for to fix that? If it is the issue...

I know the guy who had it before me recently upgraded the clutch and while he was doing that got the main bearings fitted in the gearbox, along with a few other things. So it makes me wonder why this issue has happened so soon.

Na sorry i have no idea on the cost to replace just the syncro's, I wonder why that pulled it down and replaced the b earings ,that sounds a little weird...Id "estimate" at least 800$ to 1500$,,but dont really no............l

LexDelta Explorer

LexDelta

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Na sorry i have no idea on the cost to replace just the syncro's, I wonder why that pulled it down and replaced the b earings ,that sounds a little weird...Id "estimate" at least 800$ to 1500$,,but dont really no............l

Shit ok, not quite the numbers I was hoping for, we'll see what happens.

LexDelta Explorer

LexDelta

Posted
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You said your clutch was recently changed? Maybe it is not fully disengaging and just needs adjusting?

Im hoping its something as simple as that, but if it was the clutch not fully disengaging then I would expect it to effect all gears, not just 2nd.

I have had a little trouble with 1st and reverse at times, but I put that down to my own error ;)

LexDelta Explorer

LexDelta

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sychro cone 128 each,,,,i am doing mine,,hopefully get it done next week,,,, :)

Thats not too bad I guess + manhours of course.

The clutch is rather heavy, pressing it all the way down the the floor engages it better and there is a bit less grind, but its still pretty bad.

Im hopefully getting mine done next week also, depending on what actually is wrong. :P

Ill post the results here (and amount of excessive money ill probubly have to pay to fix this)

tkong Contributor

tkong

Posted
Posted
Thats not too bad I guess + manhours of course.

The clutch is rather heavy, pressing it all the way down the the floor engages it better and there is a bit less grind, but its still pretty bad.

Im hopefully getting mine done next week also, depending on what actually is wrong. :)

Ill post the results here (and amount of excessive money ill probubly have to pay to fix this)

when i drained the oil,i found a broken clip on the sump plug, by the time i pull the box apart,i found the 3rd,4th sychromess assembly has no clips left,,,,weird,,,,,it took me two days to pull it apart(i have to make my own bearing puller,,,i have never seen such a tool before,,,)

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