Scared the life out of me when it fell out this am. Can someone tell me what size it is? Standard t5 wc with factory crossmember. Thanks!

 

the bolt to the frame? i believe is 10mm 1.5, about 1.25" or 1.5" long (30-40mm) How did it "scare you"? there are 2 bolts on each side, if 1 fell out you would never notice. If the crossmember fell on the one side, there could be more wrong than just a missing bolt.

look under the car yet?

 

Not to the frame. The trans mount bolt...goes through the crossmember. Itmade a terrible noise as the transmission hit the body and the bolt rattled down my driveshaft.

 

ahh that one.

last one i used was 7/16 course thread IIRC, but was for an poly mount, think its the same?

this says otherwise
https://www.thirdgen.org/trannymount

but the measurements they give in the article are the head size of the bolt/nut, not the thread size

stock appears to use a stud and nut, so maybe you just lost the nut?

 

Not to the frame. The trans mount bolt...goes through the crossmember. Itmade a terrible noise as the transmission hit the body and the bolt rattled down my driveshaft.

 

Yes, the original tranny mount bushing is SAE thread and the crossmenber bolts are metric. Find a decent washer to go with your bolt like a thick fender washer.

 

Cool thanks guys. Hope everyone had a great thanksgiving!

 

i know the exact bolt you're talking about i just swapped my tranny in 91 rs 305 hope you get it taken care of happy thanks giving!