engine and drivetrain GUIBO? - Nuts or Bolt head on Guibo?

[winstontj]

When installing a new guibo there is a specific way to install the bolts. When mine was changed last I accidently put all the nuts on the transmission side. It appears that the output flange bolts would have the nut on the output flange and bolt head on the guibo. For the driveshaft, the bolt heads go on the guibo as well and the nuts on the driveshaft flange???

Can anyone confirm this?

TIA,

TJW

[reuben2002]

The bolt heads should be on the guibo for both sides, and the nuts should be on the flanges. I bolted the guibo to the end of the driveshaft first, then mated it to the ouput shaft, and bolted the other bolts up.

[SteveJ]

As Johnny Canales says, "You got it!"

I ~just~ changed my guibo not even an hour ago and that is how it was bolted up.

[ingraham]

If a nut comes loose and falls off, the bolt will probably fall out the other side. If the nut is on the front side, the bolt will fall out the back side. If the nut is on the rear side, the bolt will slide out the front and tear up the transmission. I've heard the advice to put all the bolts in from the rear for that reason. I don't know if there's a good reason not to do it that way.

P.S. The Repair Manual spells it Giubo most of the time, but occasionally Guibo.

[Marty]

I had a bolt come out of the back of the guibo and it hit the shifter cross brace and sucked the shifter out of my hand and pulled it down to the level of the drive shaft tunnel, it was a bit of a suprise to say the least. This is not to say that if the bolts went the other was it wouldn't have been worse when it hit the tranny so just keep your nuts tight.

[winstontj]

Google Guibo and you get about 1,000 hits in .0034 seconds - all in english... all good old 'Merican sites

Google Giubo and you get 12,900 hits in .74 seconds.... - all in german!

Thanks again Curt. Umm the blue book actually says bolt heads on the giubo and nuts behing flanges, also HTK & realoem pics back that up. I'll just use red loctite and I have new fasteners... worst case I bag the (brand new) 5-speed OD and start looking for a CR box.

[robspeed]

Google Guibo and you get about 1,000 hits in .0034 seconds - all in english... all good old 'Merican sites

Google Giubo and you get 12,900 hits in .74 seconds.... - all in german!

Thanks again Curt. Umm the blue book actually says bolt heads on the giubo and nuts behing flanges, also HTK & realoem pics back that up. I'll just use red loctite and I have new fasteners... worst case I bag the (brand new) 5-speed OD and start looking for a CR box.

its important to remember WHY the manual says to do it the way it says to do it, and that is to avoid PRELOADING the guibo itself. Basically, what you want to AVOID, is twisting the bolt HEAD (against the guibo) while you tighten the nuts that are *sposta* go against the flanges.

The nuts rotate against the washers, and you hold the bolt heads in place against the guibo itself. Now, there is NOTHING to prevent someone such as myself or curt to put *ALL* the bolts in, heads to the rear, but put the washers under the BOLT HEADS instead of the nuts, for those bolts that are coming out the rear and are going up against flange instead of guibo. ALL to prevent preloading the steel-lined guibo holes as the bolts are actually tightened. The implication of all this is that if you end up doing it the "right" way and alternating the bolts' directions, DO NOT TIGHTEN THE BOLTS, only the nuts!!

hope that makes sense! =)

[Allenr56]

I'm getting ready to change mine out tomorrow. What torque are you putting on the fasteners?

Thanks,

[winstontj]

Allen,

Torque to 58 foot pounds as per haynes manual. Also I checked the clearances on the transmission and found that there should be no way bolt heads can tear up your transmission..... Assuming everything is nice and new! The bolt heads hit the rounded part of the rear output seal cover and therefore wouldn't really cause hell. Now if you were driving 90mph maybe things would be a little different as the bolts and giubo would tend to spread outwards and really catch on something....

[robspeed]

Allen,

Torque to 58 foot pounds as per haynes manual. Also I checked the clearances on the transmission and found that there should be no way bolt heads can tear up your transmission..... Assuming everything is nice and new! The bolt heads hit the rounded part of the rear output seal cover and therefore wouldn't really cause hell. Now if you were driving 90mph maybe things would be a little different as the bolts and giubo would tend to spread outwards and really catch on something....

Think about the nuts falling off (the back) and the bolts sliding forward, all the while spinning under engine torque. It tears the back of the transmission apart. Really!! ive seen pics!!!

[SteveJ]

P.S. The Repair Manual spells it Giubo most of the time, but occasionally Guibo.

OK.

Just tell that to Guido when I send him your way.