pops out of 4th
pops out of 4th my trans is always popping out of 4th gear. it doesnt happen on the first couple shifts to 4th when the trans is cold, but as soon as it warms up: i shift to 4th, it goes in smoothly, and go to release the clutch, and as soon as the gear gets any load on it i hear a grinding and it pops right back out of gear. it doesnt happen on full throttle shifts, mainly on just normal cruising shifts.
which internal parts of my tranny are toast?
which internal parts of my tranny are toast?
Originally Posted by Ls1Joe
Most likely keys than the synchro. The synchro keeps it from shifting at higher rpms.
Thanks,
Amber
Thanks,
Amber
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the poping out of gear is the Slider assembly. but a bent 3-4 fork is most likely the reason the slider assembly being worn out. while you are in there, put the billet keys and steel fork so it will not do this again and get a new 3-4 slider assembly. I put a new 3rd gear too to make sure all the parts that where not rite got fixed, (mine poped out of thrid)
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12 Second Club
Joined: Nov 2006
Posts: 120
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Unless you have broken the fork, you have a bad gear. The usual reason for popping out of gear would be worn engagement teeth on the gear it's-self. Not the most comforting answer, but most likely the correct one. To correct this, do everything Pontiac said he did. All those components take a dump together. If you replace only the slider assembly, the problem will remain and most likely ruin the new slider assembly, as these parts will clash when you shift. They must all be sharp to deflect and pass between each other. The good news is I think the engagement teeth on the input shaft can be replaced separately from the input as they spline onto the input shaft.
Vintage
You really dont know T56s very well. The clutch teethon a T56 gear( all of them) are part of the gear so damaged cluthc teeth require a gear change. Jump out of 3rd&4th is a known problem with the aluminum shift fork wear. It does not need to break . It wears where in fits on the rail. The iron fork solves the wear problem and should be a part of any T56 rebuild.Broken struts( keys, dogs, whatever) will generally cause a trans to stick in gear. Although you could also have broken struts, they are not causing your jump out problem. Once a trans has been jumping out of gear awhile, the gear clutch teeth can be permanantly damaged( at the back taper) and the gear itself should be carefully examined for wear at rebuild.
You really dont know T56s very well. The clutch teethon a T56 gear( all of them) are part of the gear so damaged cluthc teeth require a gear change. Jump out of 3rd&4th is a known problem with the aluminum shift fork wear. It does not need to break . It wears where in fits on the rail. The iron fork solves the wear problem and should be a part of any T56 rebuild.Broken struts( keys, dogs, whatever) will generally cause a trans to stick in gear. Although you could also have broken struts, they are not causing your jump out problem. Once a trans has been jumping out of gear awhile, the gear clutch teeth can be permanantly damaged( at the back taper) and the gear itself should be carefully examined for wear at rebuild.
The gear and the engaugement teeth are all one peace. thats why i bought a new 3rd gear, and a new slider so everything is new, and new syncros as well. the fork is whats causes the problem, but the week sheet metal pressed keys are what let you over shift the tranny, putting extra presure on the shift fork, causing the slack where the fork is on the shifter rail. the new rail doesnot get the slack in it, but the new billit keys will not alow you to over shift the tranny in the first place so the exta pressure never gets to the fork, but still put a new one it as well. between the two, the problem will be fixed from doing this again, to fix the current problem, the slider and gear. and syncors are allways a good idea
TECH Resident
Joined: Jan 2006
Posts: 991
Likes: 0
From: harrisburg, pa
ok how about this.. mine pops out of third at low rpms and if you shift into third it always grinds unless you hold the clutch in for a couple seconds.. say i shift at 5400 hold the clutch in and it drops to 3k then shift.. it doesnt grind.. but if i would shift at 2000 immediately just pushing the clutch in for normal shifting it grinds
i guess what im trying to say is.. rpms dont matter as much as long as i hold the clutch in long enough, which sucks to say the least.. i dont even know what its like to have a 6speed ive been shifting 2-4 for so long..
help?
i guess what im trying to say is.. rpms dont matter as much as long as i hold the clutch in long enough, which sucks to say the least.. i dont even know what its like to have a 6speed ive been shifting 2-4 for so long..
help?
that sounds like a Syncro problem, the best way to explane this, is they are like a brake, as you try to shift into a gear the slider pushes on the syncro and the syncro pushes on the gear, to either slow it down or speed it up to a close enough speed to let the slider lock onto the engagment teeth. if the syncro does not do this then you are waiting on the rpm's to drop to a place where it can go into gear. you can test this by rev matching the rpms and try sliding it into gear.
or, you have a whole nother issue, like the clutch no disengaging all the way. so you are pulling it out of gear and trying to put it into gear with the clutch still in contact with the flywheel. this is what make some LS1 cars all most impossable to power shift from the factory, some will, and some will not. thats what the spacers are for with some aftermarket clutches.
or, you have a whole nother issue, like the clutch no disengaging all the way. so you are pulling it out of gear and trying to put it into gear with the clutch still in contact with the flywheel. this is what make some LS1 cars all most impossable to power shift from the factory, some will, and some will not. thats what the spacers are for with some aftermarket clutches.
good info guys...i love this forum....my 5th gear was popping out a while back...it would only stay in when i gave it gas, as soon as i let off, it popped out. I couldnt even shift into 6th gear at all. The dealership told me what the gear was seized to the counter shaft and that they had to replace the whole thing as it was unrepairable. Luckily the car was under warrantee and so everything was covered and I got a brand new tranny. The service advisor said that almost never happens...
do it the easy and best way... ship the damn thing to www.t56rebuilds.com and have Joe fix it the right way with better parts.... its cheap, its fast, you wont regret it..
TECH Resident
Joined: Jan 2006
Posts: 991
Likes: 0
From: harrisburg, pa
Originally Posted by GR33N GoblinM6
do it the easy and best way... ship the damn thing to www.t56rebuilds.com and have Joe fix it the right way with better parts.... its cheap, its fast, you wont regret it..
