| HeavyEarly87T |
The stats: Rebuilt motor dropped into car with aluminum flywheel & new stage 3 clutch. 600 KM on the car now.
When starting up from stop in first gear and moving in reverse, there is a pulse, shudder or chatter on engagement. Also when in neutral with the clutch pedal pressed I can feel a pulse through the pedal.
It is RPM related. At 100KM/hr the vibration is not bad, rpm under 3000. At 140KM/hr the car feels like it is coming apart, 3400 rpm?
I do have a leak from the back of the tranny coming from the output shaft. Would that leak if there was too much oil in the tranny? Or have I lost a seal?
This shudder was in the car before I changed the engine but only at very high speeds. 180KM/hr+. I assumed the wheel was out of balance.
My thoughts:
Bad clutch/flywheel?
Propeller shaft of balance?
Wheel off balance?
Warped output shaft?
Toss match in gas tank, walk away?
Any thoughts on this will be well received, thanks.
Earl.
(as posted on supramania.com) |
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| Marcenator |
Hey bud
Welcome to the world of tranny problems:(
My thinking is it might be wheel balance or a bad tire.
I would think that if it was the tranny(ie. bent shaft)
it would vibrate all the time. Because it seems speed related more than rpm related if i read your post right, i am assuming it doesnt do it during lower speeds but higher rpm while changing gears then i would tend to thing it is a rolling problem and not an engine or tranny problem. Of course without driving it myself, i could be out to luch with my opinion:)
Hope this gives u a different perspective.
Good luck |
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| HeavyEarly87T |
Marc,
I think it is RPM related, but when under load. Which points back to clutch/flywheel. It just seems more prominent at high speeds.
Also as mentioned I can feel the same vibration when the car is not moving but the clutch is depressed. Tomorrow I will blead the clutch line again but I am still looking for other items to look for before I put the car back together.
Earl |
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| Marcenator |
hmmm well with the clutch peddle depressed i would think that pulsation is the throw out bearing but i would think that it shouldn't affect the car once in gear
got me stumped from this side of the screen :) |
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| Trowa |
were the flywheel and clutch balanced?
Andriy |
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| GOT BOOST |
quote:
Originally posted by HeavyEarly87T
The stats: Rebuilt motor dropped into car with aluminum flywheel & new stage 3 clutch. 600 KM on the car now.
When starting up from stop in first gear and moving in reverse, there is a pulse, shudder or chatter on engagement. Also when in neutral with the clutch pedal pressed I can feel a pulse through the pedal.
It is RPM related. At 100KM/hr the vibration is not bad, rpm under 3000. At 140KM/hr the car feels like it is coming apart, 3400 rpm?
I do have a leak from the back of the tranny coming from the output shaft. Would that leak if there was too much oil in the tranny? Or have I lost a seal?
This shudder was in the car before I changed the engine but only at very high speeds. 180KM/hr+. I assumed the wheel was out of balance.
My thoughts:
Bad clutch/flywheel?
Propeller shaft of balance?
Wheel off balance?
Warped output shaft?
Toss match in gas tank, walk away?
Any thoughts on this will be well received, thanks.
Earl.
(as posted on supramania.com)
Hi Earl,
Sounds like that is not a good time had by all! From your description of the speed problems, I am inclined to think that perhaps your wheels may need to be balanced or checked. Doubble check to see if they are securly bolted to the the car. That may be the cause of your shuddering. Perhaps the road conditions played a role in it too. You should retest on different roads. Failing that it may be your clutch and flywheel.
I remember reading somewhere that when a new clutch and flywheel is installed there is a break in period. I think it is about 1,000 kms on it where you need to shift at different points and speeds. I could be wrong on that.
My next thought leads me to the installation. It is possable that something was missed, or something came loose during the intallation, or while driving. I would rip into it one more time to make sure nothing is loose and playing around in there. Re tighten everything just to make sure.
My next thought leads me to see if they flywheel was balanced. Normally they are balanced before they are shipped so this may be a small possability, but still one none the less. I think you could go to a machine shop and check to see if it is balanced.
As for the leaking on the transmission, check to see if the plugs are tight. It may be that they may need some adjustment.
Hope this helps,
Mike Nikolai |
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| Trowa |
quote:
Originally posted by GOT BOOST
Hi Earl,
Sounds like that is not a good time had by all! From your description of the speed problems, I am inclined to think that perhaps your wheels may need to be balanced or checked. Doubble check to see if they are securly bolted to the the car. That may be the cause of your shuddering. Perhaps the road conditions played a role in it too. You should retest on different roads. Failing that it may be your clutch and flywheel.
I remember reading somewhere that when a new clutch and flywheel is installed there is a break in period. I think it is about 1,000 kms on it where you need to shift at different points and speeds. I could be wrong on that.
My next thought leads me to the installation. It is possable that something was missed, or something came loose during the intallation, or while driving. I would rip into it one more time to make sure nothing is loose and playing around in there. Re tighten everything just to make sure.
My next thought leads me to see if they flywheel was balanced. Normally they are balanced before they are shipped so this may be a small possability, but still one none the less. I think you could go to a machine shop and check to see if it is balanced.
As for the leaking on the transmission, check to see if the plugs are tight. It may be that they may need some adjustment.
Hope this helps,
Mike Nikolai
The flywheel and clutch are not really balanced when shipped, ppl buying Fidanza flywheels always complain having to balance them and how much they were out of whack...and i would guess the same for the clutch...and i just use Fidanza as an example cause i don;t know what Earl is using...
Andriy |
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| GOT BOOST |
quote:
Originally posted by Trowa
The flywheel and clutch are not really balanced when shipped, ppl buying Fidanza flywheels always complain having to balance them and how much they were out of whack...and i would guess the same for the clutch...and i just use Fidanza as an example cause i don;t know what Earl is using...
Andriy
Hi Andriy,
Hmmm........... That is good info to know. I have always been under the impression that they always have been balanced before they were shipped out. This is what I have been told. It sounded good so I bought the line. :lol:
Thanks for the info on it.
Mike Nikolai |
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| HeavyEarly87T |
Thanks for the ideas guys.
Tranny plugs are all in. The oil is from the yoke seal.
It is a Fidanza flywheel. I was told it was balanced for this motor as I bought it from the same guy I got the motor from.
I think it is the input shaft. I cant tell you why I think that. (I hide my shame) but I think it is that.
I will have to pull the tranny to be sure but I expect i'll be honing my tranny rebuild skills soon. Yeah!
:rolleyes: |
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| BB6SE |
it's your aftermarket flywheel causing the chatter
it's normal.. it happens on mine also..
it's loud and annoying.. |
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| HeavyEarly87T |
quote:
Originally posted by BB6SE
it's your aftermarket flywheel causing the chatter
it's normal.. it happens on mine also..
it's loud and annoying..
BB6SE,
Thanks, does this go away or does it stay that way?
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| BB6SE |
| it sounds clunky and seems like the tranny's gonna fall out right? |
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| BB6SE |
and the shutter when pressing the clutch while in neutral is normal also.. just do some research and u'll see that it's normal..
this stuff worried me a lot too when i first got the car |
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| HeavyEarly87T |
Yep you got it. Right down to the tranny falling out feeling.
Thanks again. I guess I'll put it together and ride it out.
Url |
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| HeavyEarly87T |
[QUOTE=quake]hey guys i work for toyota and if the out put shaft is leaking gear oil, then remove the tranny and replace the bearings inside sounds like they are worn out.[/QUOTE]
Thats harsh! I am hoping that whilr the tranny was out for 7 months in my garage, the seal dried out. :ugh2:
I have ordered a new one and will have this in late next week if I can. I'll post if this resolves it or not. :bigthumb:
Earl
EDIT: Please see my post tranny troubles 2. This thread closed. |
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| HeavyEarly87T |
Look what I found!
http://cgi.ebay.com/ebaymotors/ws/e...TRK%3AMEWA%3AIT
If your interested, check out the MA5 truck transmission from the 2004-05 Chevy\GMC Colorado\Canyon.
Good points:
Bolts up to R154 bellhousing
Input shaft length 7.5" (R154 7.25")
Uses Chevrolet splined clutch disk and GM style THM 350 yoke
Upgraded version of Toyota trannies
Bad points:
Uses electronic speedometer
Gear ratio's not as good as the R154
Trans First Second Third Fourth Fifth
MA5 - 3.753 2.26 1.37 1.00 0.729
R150 - 3.83 2.062 1.436 1.00 0.838
R151 - 4.31 3.32 1.52 1.00 0.83
R154 - 3.25 1.95 1.30 1.00 0.75
(as posted on supramania)
Who wants to try it?
EDIT: I called for a local price and it is $1784.78 CAN from a dealer here in town.:blink: |
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| uncorkedsupra |
hey earl check your driveshaft, to see how the u-joints are feeling, and also spin it around to see if possibly one of the balance weights has possibly come off, its rare but i have seen it happen, i learned that clutches should not chatter at all even with a multi-plate setup, did you change your clutch bearings, or re-use the old ones? i will take a look thru my info on clutchs and get back to you.
carl |
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| HeavyEarly87T |
Carl,
I have looked at this for over a week on a couple of forums. I have to replace the seal on the back of the tranny this week, so at that time I will have the opportunity to look at everything you mentioned. I inspected the drive shaft before I installed it and it checked out. Also please note that I can feel the vibration when the car is at idle.:dunno:
I am going to change the throw bearing again just in-case I managed to frig it on install.:mad:
Thanks, please send me any info you think may help.
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