Allright i have a civic Ex manual,
D16y8

but heres the thing i am hearing a whining or whirring noise when im acceleration, or in gear. it doesnt haappen until about 3500 rpm. its fine then as soon as it hits that point it just gets loud like 2x as loud. and it does it untill about 5th gear. but whenever the clutch is pressed in, any gear or any rpm it goes away. even if i rev it it goes away. but as soon as the clutch is engaged i get the sound. any ideas? it stays while driving too not just accelerating.
ill try go get a youtube video uploaded her soon for the sound.

at first we thought it was my valve seals because i have been burning oil and gettin blue smoke lately, but then we realized its not comming from that, because again it doesnt do it reving, only under load. so i still have bad seals probly, but any ideas on the tranny problem?
i was thinking its either gears/syncros or maybe a pilot bearing.
also had tranny fluid checked last oil change, and everything was good, it has been going on for quite a while, l ast few months and it has onlyh gotten slightly louder.

 

I'd think it'd be the pilot bearing. I thought mine was going out once but then it ended up being radio whine through my speakers.

 

Does it sound like a pitter-patter type knock?

 

well mines not radio, for sure.
and no its not, its just loud, zero pitter patter or knocking. like it doubles in volume of normal driving. and its mostly in 1st gear. in second gear the sound is significantly less. like about half of what it was. almost normal but slightly louder, and 3rd gear is slightly less than that, and 4th gear you can barly hear it. but its still there just faint. but liek i said first gear doubles or even triples in noise as soon as about 3500 rpm. thats 80% of the time, the other 20% of the time, it just is still there in 1st gear just really quite, and then as you accelerate at all it just gets louder.

 

Split the trans and see what bearing exploded.

 

I get the same thing. It sounds normal then all of a sudden it doubles in loudness and sounds rough around 2.5k rpm but goes away as I reach higher gears/speeds. Soon after the noise started I noticed a new knocking noise whenever I released the clutch pedal at idle. So the ISB is most likely bad and I won't be surprised if the pilot bearing is thrashed as well when I open the tranny up this weekend.

I vote open it up and take a look at the bearings, one of your bearings is probably bad as well.

 

im thinking its internal bearings....mainshaft, intermediate shaft, or diff. bearings

 

if your gonna split it open u should just replace all ur bearings anyhow

 

D16Y8 doesn't use an intermediate shaft. Trannys that do don't have an internal bearing for it. No need to replace all the bearings unless you just never want to split the trans again.

 

those were just examples of bearing that should be replaced i wasn't talking specifically about that trans.....thats the point so u dont have to split it again...why in the hell does someone keep wanting to open their trans up?

 

I do it every month so I can test different clearances and parts.

If a trans is maintained the bearings will last for over 400k (from my experience). No need to replace a bearing if it shows no signs of wear.

 

well....what is he's not like u wanting to pull the trans apart every month and yes u are correct about maintaining the trans of course...but sometimes things just don't work out

 

Sometimes things just don't work out? There is no excuse for not maintaining a car. If the trans is maintained, there is no reason to replace every bearing. If you don't maintain it, then having to replace all the bearings shouldn't be a problem for you (trans would need a lot more than bearings if not maintained).

Ask any trans expert on here and they will agree with me on the bearings not needing to be replaced. Or you can just go straight to the source and see what Honda says about it (note that items they think should be replaced when the trans is open are labeled with "Replace").

 

of course if bearings are not damage they do not need to be replaced, i am not argue that point....all im saying is that if the bearings are old and if i got the trans open why not replace it? what if u only replace 1 then 10k later another one starts going out then u have to do it again...where as if u have it open and u replace all of them u wouldn't be in that situation....and another thing not all bearings are perfect u obviously never ran into having a bad part...maybe the bearing was good when u put it in or so u thought, a few days later its noisy u find out that the new bearing is bad...its called a defective part....happens pretty often

 

If you clean and inspect everything properly, you'll know how long the bearing will last (assuming you've done enough tranny's over a long enough time). For the average joe if it spins fine without play after cleaning, it will last.

I've never had a defective part installed. I've had bad parts installed, which is why I don't deal with certain companies anymore. Part of building a trans is inspecting everything, including new parts. Bearings are a very simple construction, and just as simple to inspect whether used or new.

 

well...then u are pretty lucky to not have to deal with bad parts...either that or ur talking out ur ***...cuz if u rebuilt enough of them u would be saying exactly what i am

 

I have no reason to lie.

Almost every trans I've built that has had a problem has been user error. 3 have been my error, 1 of those being my first personal trans. Everyone with a bearing problem is the ISB (which I replace in every trans). Everyone of those, the owner admitted to improperly installing the trans and/or clutch/pressure plate/flywheel.

 

I'm with Aquafina with the bearing issue. Honda transmissions have very few bearing failures, and the suppliers they use provide bearings which last the lifetime of the vehicle for the most part when maintained properly.

Only bearing problems I've seen naturally were ISBs and the top countershaft bearing. All other bearing issues (needle bearings, diff bearings) have all had issues only from debris entering them from gear failure and the like.

OP, open the trans up, inspect all bearings, and replace the one that is bad. You'll most likely find that the others are fine. Replace them only if you've got money that doesn't need to go elsewhere.

 

I've had one part failure from a supplier, synchro cracked with less than 1000 miles.

No bearing failures on anything I'be went thru, I just replace the ISB in all trannys and inpect the other 11 bearings.

Only one failure on a tranny of mine, tried using a D cable FD in a hydro tranny, stripped the internal splines of 5th gear, Part of testing/R&D.

Of the trannys I've built for customers, only issue has been CSB's walking out. First one was before I started staking them in, second was one that even staked still backed out. I ended up gluing it in with threadlocker.

So three issues out of 300+, pretty good IMHO. Most people don't do a full strip on the shafts and inspect plus clean out the oil ports......something Chris and me do.

Coincidence?

 

thats good for u guys it means ur doing ur jobs correctly....i just cover my *** when it comes to things as easy as bearings....no customer likes it when u tell them that u have to go in the trans again cuz its another bearing.....even if its 30k later....replacing all bearings while the trans is apart is just a smarter choice to make when it comes to cust. satisfaction

 

My customers are satisfied. Must be something in the water.

 

maybe so....

 

This is what separates the men from the boys....


People talking about Hondas not having bearing issues is bogus. Honda transmissions have a LOT of bearing issues. The oiling ports in the shafts are very small and can easily fill with debris from wearing parts. The oil is fed through the shafts and to the bearings. The ISB is the hardest to reach with oil and take the most force as it is first off the clutch disc.

These bearings fail FAR too common on cars. In my years of dealer service and independent, I have seen MANY Civics destroy bearings after following strict Honda maint schedules. Even the 01+ Civics and Insights kill mainshaft bearings all the time.

Just the nature of the beast.

I always replace the mainshaft bearings everytime a trans is opened up. You rarely ever have to replace a CS bearing or diff bearing...