Very strange clutch/tranny problem...(clutch hitting flywheel....and maybe more)

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Old Jul 6, 2006 | 10:16 AM
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Default Very strange clutch/tranny problem...(clutch hitting flywheel....and maybe more)


So, I picked up this car for $450 with a bad tranny and other obvious problems. Since in was an Si, I didn't really care. it came with all the body panels, So i put them back on, threw on some 99-00 Si wheel + Azenis.

My friend Bense had a spare ZC tranny sitting under his house, so he put in the Si FD and 5th gear into the ZC tranny to give me some very nice gearing. I picked up an Exedy Stg 1 clutch and pressure plate from the shop I used to work at for $20. **It was in a CRX with a Z6 and an Si transmission. I figured it would work fine, but when i got it all in and started my car the clutch was scraping pretty bad.


So last night i pulled the tranny again and found that the clutch springs were hitting the flywheel bolts. I figured it was a Z6 clutch and wouldn't work for the A6, so I put the original clutch back in with the newer ($20) pressure plate. After putting everything back together the clutch was still dragging, which made the car hard to start. However once it's running I can push in the clutch pedal and the noise stops.

I quickly turned the car off and puhsed it back into the garage. I noticed that it wouldn't really roll back (slight downhill) and was harder than it should be to push. So i think it might be the exact same problem as before.

Any help is appreciated.

***edit***

also, the car won't really go into gear. However I didn't try to force it or anything, just decided to leave it alone.


Modified by thehatchninja at 6:28 AM 7/7/2006
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Old Jul 6, 2006 | 10:22 AM
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Default Re: Very strange clutch/tranny problem...(clutch hitting flywheel....and maybe more) (thehatchninja)

I don't blame you for picking it up man for 450 unless its all rusty and broken you can't go wrong.
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Old Jul 6, 2006 | 10:27 AM
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yeah....thanks

any chance the flywheel bolts have backed themselves out and I just didn't notice it?
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Old Jul 6, 2006 | 12:38 PM
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Default Re: (thehatchninja)

make sure u flywheel bolts are hella tight... also maybe adjust the clutch cable?
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Old Jul 6, 2006 | 12:52 PM
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Default Re: (saikouEF8)

maybe you put the disc in backwards
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Old Jul 6, 2006 | 12:57 PM
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Default Re: (jlicrx)

What about the throwout bearing? I had a 88crx that wouldn't go into gear, turned out the throw out bearing had one of the tabs broken in half.
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Old Jul 6, 2006 | 01:29 PM
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Default Re: (jlicrx)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jlicrx &raquo;</TD></TR><TR><TD CLASS="quote">maybe you put the disc in backwards</TD></TR></TABLE>

i think u did mang check it
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Old Jul 6, 2006 | 02:07 PM
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Default Re: (jlicrx)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jlicrx &raquo;</TD></TR><TR><TD CLASS="quote">maybe you put the disc in backwards</TD></TR></TABLE>

definitely not. That's what I thought happened the first time with the Z6 clutch, that's why I pulled the tranny last night actually. As stated above it's some clearance issue that I don't understand. I was very careful to put everything back together correctly, I'm 100% sure it's not in backwards.
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Old Jul 6, 2006 | 02:26 PM
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Default Re: Very strange clutch/tranny problem...(clutch hitting flywheel....and maybe more) (thehatchninja)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by saikouEF8 &raquo;</TD></TR><TR><TD CLASS="quote">make sure u flywheel bolts are hella tight... also maybe adjust the clutch cable?</TD></TR></TABLE>

Hella tight? you dont want them to tight,,they have tq specs....

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by thehatchninja &raquo;</TD></TR><TR><TD CLASS="quote">

definitely not. That's what I thought happened the first time with the Z6 clutch, that's why I pulled the tranny last night actually. As stated above it's some clearance issue that I don't understand. I was very careful to put everything back together correctly, I'm 100% sure it's not in backwards.</TD></TR></TABLE>

When you put it back together did you follow the correct sequence and tq them down to spec? also i always add thread lock on those bolts,,cheap insurance.....
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Old Jul 6, 2006 | 02:51 PM
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Default Re: Very strange clutch/tranny problem...(clutch hitting flywheel....and maybe more) (Mr.speaker)

I never took the flywheel off. The original clutch looked to be in good condition, like it had been recently replaced. The flywheel surface looked very good also, as if it had been recently machined.

I'm thinking it is a clutch/flywheel clearance problem. BUT....it's the flywheel clutch that came with it. The guy i bought it from was having transmission problems, MAYBE, it's the same problem and when the flywheel was machined they took too much material off and now that the clutch has worn there are clearance issues.

what do you guys think?
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Old Jul 6, 2006 | 04:38 PM
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Default Re: Very strange clutch/tranny problem...(clutch hitting flywheel....and maybe more) (thehatchninja)

its the tranny, the input shaft bearing is bad , it makes a grinding scraping noise right but goes away completely with the clutch in right?, this is a bad input shaft bearing , either something got in the case when you had it apart or you did not notice it was bad when it was open, my trans does this now it might last 100,000 mile this way or 100, it could go completely anytime
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Old Jul 6, 2006 | 05:14 PM
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Default Re: Very strange clutch/tranny problem...(clutch hitting flywheel....and maybe more) (Crx Jimmy)

I don't think so. Bense built this transmission, and he said everything looked really good. I'll be sure to ask him about it.

Also, it's doing the exact same thing as when the clutch was hitting the flywheel bolts.I think it's a flywheel/clutch interference problem. I'm guessing the last time the flywheel was machined too much material was removed.
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Old Jul 6, 2006 | 07:48 PM
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Default Re: Very strange clutch/tranny problem...(clutch hitting flywheel....and maybe more) (Crx Jimmy)

is the flywheel new? the only other thing i can think of is if the flywheel was surfaced too much. your using the special flywheel bolts right the 12 pt ones
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Old Jul 6, 2006 | 08:53 PM
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the flywheel is oem.....never touched by me, yes the correct bolts are in there. I think i'm going to pull the tranny tomorrow and check the flywheel.
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Old Jul 7, 2006 | 09:09 AM
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Default Re: (thehatchninja)

well, I'm not going to mess with it today. I didn't even want to think about it, but they guy I bought the car from provided some info on the clutch/tranny problem he was having before he parked the car.

Quoted from brodequin's PM:
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">i'm not sure man the clutch was just replaced before i bought the car, so I was told. it has 121k on it at the time at one point it started making chatter that went away when i press the clutch in, i figured it was the throw out bearing. i just let it go on like that, third gear always grinded anyway, and then one day it started making this awful scraping/metal in metal sound when just idling. so good luck man and thanx for the update</TD></TR></TABLE>

This is definitely furthering my suspicions that the flywheel was overmachined, as the clutch wore it started to make contact with the flywheel. The first clutch I put on had a different offset, which made the problem worse, this clutch may or may not have the correct offset, but it had worked for 50k miles until it progressivly got worse, making it undriveable.

I seriously need to just pull the tranny.
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Old Jul 7, 2006 | 02:09 PM
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Default Re: (thehatchninja)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by thehatchninja &raquo;</TD></TR><TR><TD CLASS="quote">I seriously need to just pull the tranny.
</TD></TR></TABLE>

^^yup
will Tommy's flywheel work from his crx? This is a good chance to upgrade to aftermarket.

It will be like my car- worth all the pain!
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Old Jul 7, 2006 | 03:07 PM
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Default Re: (thehatchninja)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">i'm not sure man the clutch was just replaced before i bought the car, so I was told. it has 121k on it at the time at one point it started making chatter that went away when i press the clutch in, i figured it was the throw out bearing. i just let it go on like that, third gear always grinded anyway, and then one day it started making this awful scraping/metal in metal sound when just idling. </TD></TR></TABLE>

That sounds exactly like what my car did when the input shaft bearing in the transmission went out. When I finally dropped it, the input shaft clicked audibly when spinning it by hand. Yuck...

--DD
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Old Jul 7, 2006 | 09:20 PM
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Default Re: (Dave_Darling)

thanks man, hopefully it won't be that.
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Old Jul 7, 2006 | 11:29 PM
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yeah. i don't think it's the clutch hitting the bolts, because then it would make noise with the clutch pushed in, and be fine with it out, not the other way around. anyway, good luck.
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Old Jul 8, 2006 | 08:18 AM
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thanks....I'm actually not even going to get to it today either. AARRRGGHH

Sunday that tranny is getting owned.
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Old Jul 10, 2006 | 09:15 PM
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Default Re: (thehatchninja)

it's now tuesday, and the car is still sitting there............yawn.
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Old Jul 12, 2006 | 01:51 PM
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Default Re: (thehatchninja)

FINALLY got around to pulling the trans today. I did it in about an 1 hour and 20 minutes. I'm getting kind of good at this. The bolts were hitting the springs again. I noticed old marks on the springs and some fresh ones, so this was the previous owners problem too.

I will post pics on this flywheel next to another unmolested one.
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Old Jul 12, 2006 | 02:17 PM
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Default Re: (thehatchninja)

i'm gonna vote for a bad input shaft bearing, my Si tranny makes the same noise that has recently gotten godawfuly loud in the last few months, its starting to now clunk into gear, waiting for it to blow. sounds like grinding scraping at idle but goes away as soon as the clutch is disengaged, you also probrably have bad gear wine. very common on these trannys as the bearing guides are plastic and wear out prematurely. the new bearings you'll get from honda now have metal guides cause they're realized this problem.
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Old Jul 12, 2006 | 02:34 PM
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Default Re: (thehatchninja)

Well might be overmachined. But it might be machined wrong. You have to make sure there is a step for the pressure plate on the flywheel is correct.

My tranny guy had to do the clutch all over because of it.
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Old Jul 12, 2006 | 02:49 PM
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Default Re: (thesmogman)

I'm thinking that since the clutch springs were obviously dragging against the flywheel bolts that it's not the ISB.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by thesmogman &raquo;</TD></TR><TR><TD CLASS="quote">Well might be overmachined. But it might be machined wrong. You have to make sure there is a step for the pressure plate on the flywheel is correct. </TD></TR></TABLE>

I'll check that too. i guess I'm waiting to get a pic comparing my flywheel to a normal one.
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