The LS tranny that I got from a crook on Hyrbid (deanB18C5@aol.com) is toast so yesterday I threw together a hybrid Y21 with an LS FD. This setup shifts smoother than any tranny that I have owned BUT it howls like a dog mission. Does anybody know what would be casuing the howling. The tranny gets louder with each gear shift. I will be tearing the tranny apart today after work and I would appreciate any suggections that you guys might have.

Dee the hooker hater!

 

did you properly shim the differential? oh yea wait... i remember what causes that now. one of the bearings in your tranny is bad. its probabally either the large on that fits on the end of the input shaft or the small on that rests in the bell housing that the input shaft slides into. when you take apart your tranny check the bearings by spinning them. they should spin free, smooth, not make any sound, but not very fast.


[Modified by SEFI8LOxCivic, 12:36 AM 4/15/2002]

 

diff didn't have to be reshimmed. I'm gonna check the thrust washers today after work.

 

most of the time the diff doesnt need to be shimed, how i like it set is that the ring gear (final drive on diff) should be level with the bell housing. with the case assembled there should be no side to side play with the diff inside the case. if your running the gsr roller bearing how i test preload is that i stick the intermediate shaft inside the tranny and i spin it. there should be some resistance. this isn't an exact science but imagine what it would take to spin the intermediate axle 15 ft/lbs. if its around that much then your okay.

 

I'm gonna check all of the clearances because this tranny shifts too smooth to be making so much noise. I assumed the Y21 and LS rings were of the thickness because my Y21 was working just fine before the FD ring/shaft swap. I either forgot to add one of the 28mm shaft washers on the main shaft or the 72mm snap ring washer that sits under the diff bearing needs to be changed. I will only have 3.5 hours to do this so I'll have to work fast.

This a normal roller bearing setup and not the cone bearing.

 

counter bearing homie

 

hey foolio... you wanna give me some more info? Are you saying the counterhaft bearing isn't seating correctly? Needs more clearance? Needs Less Clearance?

 

sounds like a bad bearing.... could even be a t/o
i remmber when i had a bad input, it made a noise that kinda howled, but growled when i had the jams up

just like andy said up there
"i remember what causes that now. one of the bearings in your tranny is bad. its probabally either the large on that fits on the end of the input shaft or the small on that rests in the bell housing that the input shaft slides into. when you take apart your tranny check the bearings by spinning them. they should spin free, smooth, not make any sound, but not very fast."




[Modified by court, 10:06 PM 4/14/2002]

 

1500 started the tranny pull
1550 tranny out and completely dis-assembled
1700 after inspecting the tranny and changing back to the original upper half re-install is started. Inspection found nothing unusual. No weird wear patterns and the clearances were within spec.
1800 with the exception of bleeding the slave cylinder and putting the wheels back on everything is finished.
1830 Op check on the lift revealed the same high pitch whine that got higher as you shifted gears. The whine is present in all gears including reverse. Wednesday I will be installing my back LS FD and shaft that I got from Panny on Hybrid and if that doesn't clear up the problem I'm gonna buy a another Y21 and leave it stock.

 

Here's a copy of my post from Hybrid...

I checked all of the clearances today and everything was OK. After checking the gearset for a wear pattern I turned the gears by hand to see if there was any binding. Everything seemed to be ok. Today I re-installed the orginal upper case that goes with the bell housing side of the Y21 tranny because I thought the thrust shim in the GSR upper half might be causing problems. I used the GSR upper half because I wasn't able to get the busted roller bearing race out of the Y21 upper half yesterday. With the correct puller the race practically fell out of the case in a matter of seconds.

I used this Y21 tranny w/Mugen LSD without any problems before adding the LS ring and shaft. The only thing I didn't do was a tooth count on the mainshaft because I didn't think about until I was putting the wheels back on. Wednesday I will be doing the three hour tranny drop, check and re-intsall again. After dividing 64 by 4.266 to get 15 for the mainshaft teeth I cross referenced this with the bgears page on tiiteb16a. What's the difference between my Y21 and LS S80 mainshafts? Since both shafts are of the 15 tooth variety can the 15 tooth Y21 mainshaft be used with a 64 tooth LS FD ring without any problems?

I used Mook's "Civic tuning book" to check tranny and here is there clearance check method:

1. Remove the 72mm thrust shim and gutter plate from the upper half.

2. Install the countershaft and use a straight edge laid acorss the housing and above the wshers to mic the distance from the 28mm washers on the top of the straight edge
.
3. Place the two 28mm washers on top of the bearing in the bell housing side and use the same straight edge laid across the case to check the distance from the top of the straigth edge to the top washer.

4. Mic the thrust shim and compare it to the difference of the other two measurements. If the thrust shim is not within spec change to appropriate size shim and reinstall the gearset.

Is that the method you guys use. I know my writing was probably confusing but it makes sense to me.

If you guys have any more info for me please post up before tommorrow. Thanks fools!!

 

bump for more info....

 

well, are you running a taper or R bearings, or y21 bearings( diff)

 

Y21 Roller bearing

 

last time!!