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Tranny Done Blowd Up

Discussion in 'Technical Q&A' started by jjstecher, Oct 2, 2005.

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  1. jjstecher

    jjstecher Formula Junior

    Jan 21, 2002
    962
    Rochester Minnesota
    Full Name:
    John Stecher
    #101 jjstecher, Jan 6, 2006
    No Doubt - I actually have no clue what area Rifledriver is talking about so if he is on here feel free to photochop on of my pics to point it out. I think I can figure out what he is saying but would rather get it from the horses mouth.

    Erine - The oil pump got chewed to hell to when the shaft shifted on one end and as it dug in deeper it started to chew this up as well. I really cant believe it was as brutal as it ended up being until I got it all apart. The bearings arent to expensive except for like 2 of them. Overall Daniel got them to me quick and I got them back in where needed quickly. Now if only I didnt get side tracked and decided to take my suspension apart I would have my car back together. :) Good news is the tranny is getting its final button snapped back together and then its just a matter of lifting it back into the car.
     
  2. ernie

    ernie Two Time F1 World Champ
    Lifetime Rossa Owner

    Nov 19, 2001
    22,620
    The Brickyard
    Full Name:
    The Bad Guy
    #102 ernie, Jan 6, 2006
    Yeah, and we get to see what happens when hardend steel and aluminium mix. The aluminium looses.

    As for the part Brian was talking about, its the rear bevel gears. You can see it in the 4th & 5th pic up from the bottom. You have to make sure to shim the pinion gear properly so that the teeth of the gears mesh right. The rear bevel gear, or pinion gear, has to have the proper shim behind it so that it is in full contact with the ring gear. If the mechanic doing the job is lazy about it that is where the gap between the gears comes from, and can cause the teeth of the gears to break from being loose. From the way alot of other things on the car are put together it wouldn't surprise me if thats part of the cause.
     
  3. No Doubt

    No Doubt Seven Time F1 World Champ

    May 21, 2005
    72,740
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    Mr. Sideways
    #103 No Doubt, Jan 6, 2006
    Last edited by a moderator: Sep 7, 2017
    In these two pics?
    Image Unavailable, Please Login
    Image Unavailable, Please Login
     
  4. No Doubt

    No Doubt Seven Time F1 World Champ

    May 21, 2005
    72,740
    Vegas+Alabama
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    Mr. Sideways
    #104 No Doubt, Jan 6, 2006
    Ernie, did you see in that quote that RifleDriver was saying that paying proper attention at clutch changing time could spot this problem?
     
  5. ernie

    ernie Two Time F1 World Champ
    Lifetime Rossa Owner

    Nov 19, 2001
    22,620
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    The Bad Guy
    #105 ernie, Jan 7, 2006
    Yeah. The only thing I can think of would be to check for play on the pinion shaft via the side that has the ring nut.

    Please correct me if I'm wrong here Brian.
     
  6. jjstecher

    jjstecher Formula Junior

    Jan 21, 2002
    962
    Rochester Minnesota
    Full Name:
    John Stecher
    #106 jjstecher, Jan 7, 2006
    Thats about all I can possibly think of here as well. The only think you can really do is just wiggle the pinion back and forth and in and out and see if you have any slop. If you do it might mean that the situation he is talking about is occur....or you are loosing a bearing.
     
  7. fatbillybob

    fatbillybob Two Time F1 World Champ
    Consultant Owner

    Aug 10, 2002
    29,285
    socal
    #107 fatbillybob, Jan 8, 2006
    Nope...RD is talking about the drop gear aka transfer gear on the clutch shaft. This is where 4 GB I know of including mine has broken. To torque a fastner all parts must be fully seated. If the drop gear is not fully seated on the splined shaft it is possible to reach the torque spec. But over many miles and heat cycling the gear moves on the shaft because it is not fully seated. The torque on the ringnut is lost and the gear moves. This breaks one or both drop gears and beats on the bevel drive gear which can effect its tolerances and then blow up the same gear as posted in erine's box above. However, this is not the cuase of ernies Gb failure. In his case a bearing blew up and shreaded the box. RD believes he can feel play in the clutch shaft and feel bearing and gear play by hand as he changes the clutch. I do not believe this can be done reliably without removal of the clutch shaft which is an easy job. RD is a real pro and maybe he can really feel this. I got pretty good feel and I personally can not diagnose such an issue by feel.
     
  8. No Doubt

    No Doubt Seven Time F1 World Champ

    May 21, 2005
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    Mr. Sideways
    #108 No Doubt, Jan 8, 2006
    Is this problem area visible in any of the pics on this thread?
     
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