1st gear grind

[minimotos95]

total noob question, yes i searched but didn't find much other then
"Put the car into 2nd, and quickly slam it into 1st before the transmission shaft has a chance to speed up. This may cause loud and embarassing grinding noises if you are unlucky. This is normal."

we went and test drove a 90 TSI AWD and it was grinding going into first (from N or 2nd, rolling or still.) but it went in to gear fine other then the grinding noise...
my brother was driving he always grinds gears it did grind from first to second once i but i think that that was because of the sh**ty driver...

what is this caused by typically? poor design or something wrong with the clutch/trans?



also whats the average cost of a windshield for a 1g?

 

[Juanpa]

The clutch isnt dis-engaging completely. Are you slamming the clutch to the floor?

 

[SpawnedX]

Synchros usually wearing out when that happens.

 

[minimotos95]

clutch was all the way to the floor, doesn't it usually pop out of gear when syncros are worn?

 

[SpawnedX]

If it is really bad it could. Though it's not necessarily synonomous.

 

[Juanpa]

Try adjusting the clutch. Put some play under the pedal. So that it dis-engages at the middle.

 

[minimotos95]

well, i can't really do anything to the car(yet) i am just trying to get an idea of what it could be, my brother is looking at buying it... if he can get it cheap enough

the clutch let out 1/4-1/8th of the way in(about 2" from the ground)

 

[SpawnedX]

Our transmissions are made of glass, if your brother plans on putting any real power to it, it's going to Shep or one of the other transmission shops sooner or later.

 

[minimotos95]

spawned, i know, one of my local DSM buddies hates the 5 spds for that reason... he wont be running more than 300-350hp

 

[SpawnedX]

On this current GSX I am looking to be pushing 350 to wheels, hope to run some 11's, still going with a Shep stage 3 build, I would rather have overkill then underbuilt. How much is this 90 TSi AWD?

 

[minimotos95]

he wants $2000, hoping we can get it for $1000-1250

 

[SpawnedX]

Yeah $2,000.00 for a 90 with transmission problems isn't going to happen for him. If you can walk away with it at $1200.00 that's not too bad. Don't forget that 90's are different from every other 1G, and has some compatibility issues. Use that information and the transmission being bad to try to get him for $800.00.

 

[minimotos95]

isn't it just the electrics that are different or is it mechanically different to?

 

[SpawnedX]

I'm not a 1G guy, but I do know some of the ignition components, the throttle body and shifter cables are different. There is more though.

 

[gusu]

I forget what all you do to then but I do remember that there are no 90 rebuild parts so mine had to be converted to a 93 transmission. Didn't really cost much extra either. Just like another 175.

 

[Lofty]

So much misinformation in this thread. 90's are rebuild able. Are you trying to say they used 100% completely different parts in the 90? What?
One of the things you have to look for is the output shaft spline count. Ya know, the thing that slides into the tcase if you have an AWD. It'll be either 22 or 23. If that matches up to your T-case, you're good (as long as it's not a GVR4 trans)
The other things are the shifter arms on top of the transmission. The 90's are longer, as well as the shifter and shifter cables. They all have to be changed out.
All in all it's not a big deal, I've done it twice.
Here's a link to the differences.
Shifter Differences, 90 and 91-94
Cables, Shifter base, Shifter bracket, and shifter arms.
Any questions about this, Pm me, I've done it quite a few times.
This grind is a failing syncro, or an improperly adjusted clutch. It's usually a combonation of both, if you have an improperly adjusted clutch hydraulic system, you will eventually have a failing trans.
Do the syncro failing test. Car on, car in neutral, don't touch the clutch as of now. Start to slowly slide it into first. If it grinds, you have a failing syncro. Do this for all of the gears and see which syncros are failing.
The 1st/Reverse syncro issues are usually because these gears are at the top of the transmission, and they are the last ones to see fluid, especially if the trans fluid is a little low, that's why they go bad, as well as improperly adjusted clutch system.
Throw some syncromesh in the trans if you get it.
Then, see if the clutch is dragging. Push in the clutch, put it into first, keep the pedal pushed down, and rev it to almost redline. If the car starts to jut forward before like 6k , you have a dragging clutch. (Don't hold it at redline, make it a quick thing, it still is a DSM remember?)

If you do need a transmission. Go to TMZ performance. Good vendor.

Pm me with any more questions.

 

[minimotos95]

TY lofty, i think we are going to go look at again and negotiate on Wednesday, i will let you guys know what happens...
if my brother doesn't buy it i'm going to try to trade my audi for it.

edit: i found a good page on clutch drag and synchros http://www.jackstransmissions.com/pages/clutch-drag-kills-synchros