'92 Exp Flex Plate bolts- Oops! | Ford Explorer Forums

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'92 Exp Flex Plate bolts- Oops!

Karmana

Member
Joined
May 2, 2006
Messages
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City, State
Addy, WA
Year, Model & Trim Level
1992 Explorer EB
Finally found the problem (from another thread post) - the flex plate was impressively mangled. (center spun faster than ring gear, cracked plate in 2 places)

Problem: misplaced flex plate to torque converter grade A bolts.

Can anyone tell me the exact size specs of those bolts? SIMILAR bolts are here:
709-5-1604.jpg


Wendle Ford of Spokane says he can't find them in his book, and Southwest Ford of Texas says "obsolete"... with the specs at least, I can pick some up anywhere :)
 



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I would suspect that Grade 8.........would do.

Aloha, Mark

PS.....don't KNOW thread spec, but don't get um' too long or too short.....you know how that goes. Change them all together, at the same time.
 






Yeah, I know they're like grade 8.8, the problem is knowing the specs for length, pitch, etc.

Changing them all at the same time... isn't an issue, since I lost the whole pile- and therefore have none to measure. Hence, why I'm hoping someone else either knows theirs, or can check if their in the midst of a rebuild right now :)

BTW, what is the reason for the split head on the bolt?
 






I purchased my first Explorer, a 1993 XLT, that wouldn't start or run. It died on the old man I got it from running down the road. He was asking $250.00 for the truck. I felt like I was stealing it from him so I talked him into leaving the receiver hitch on it and gave him $450.00 for it. I had to, my concience wouldn't let me buy it so-o-o cheap. Diagnosis and findings were a split / cracked Flexplate that the spacer between the flexplate and the crankshaft became embedded in as the flexplate split.
Long story shorter - I went to a local wrecking yard after not being able to find a replacement flexplate at the parts stores with the aluminum piece attached to it and found the flexplate and spacer were two parts instead of one. The wrecking yard sold me the flexplate, spacer and BOLTS for $25.00 but since he carried the truck up front on his loader and removed it for me I threw him an extra $15.00 to make it an even $40.00 (this way he didn't need to make change).
I will try to find (remember) where I put the extra 6 flexplate bolts I have from the job and get you the information on them tomorrow exening. Both sets were identical in length, size and head size - for my 1993. I can't remember if the flexplate he removed for me was off of a 1992, 1993 or 1994 but it matched my old one (except for being two parts instead of one mangled mess).
I don't know if it will make a difference but again, if I remember correctly, my Explorer and the parts Explorer were both 4x4s. It has been a couple of months since I tackled and finaly finished that job (after owning the 1993 for almost a year and a half).
Finding the correct Transfer Case input shaft seal was another feat in itself. I had trouble finding the correct "flanged" seal. All of the parts stores wanted to sell me an unflanged seal and there was NO WAY I was going to buy an unflanged seal with no ridge to bottom it out on in the opening of the transfer case.
 






It took me long enough to locate these. The flexplate bolts are a silver-blue in color. They have the markings M E and 8 on the head, on every other section of the head, which is notched in the middle of each side and in the entire center of the bolt. The head is 17mm and Hex, of course. The head of the bolt is 6mm to 7mm thick at the edges. The length of the bolt itself from the bottom edge of the head to the tip is 4 cm (centimeters) or 40 mm long. The entire length of the bolt is 4.6 to 4.7 cm long or 46mm to 47mm long. IF the 4x4 and 2WD bolts are the same these are the ones that came out of my 1993 XLT 4x4 and were identical matches to the ones that came out of the truck I got the other flexplate out of. Even the color matched. I hope this helps. I really do apologize for the delay. If you want me to email some pics of the bolts pm or email me and I will do that too.
 






stupid question: have you tried taking one of the old bolts down to your local fastenall(if you have one) and seeing what they can do?
 












I was sitting here surfing the Forum and looked over at the flexplate bolt on my computer desk. i realized I forgot one of the other important details about the bolts, there is about 10 to 11 fine threads on the bolt per CM (centimeter).
 






Fastenall is listed in the Ocala telephone yellow pages under "Fasteners, Industrial & Construction". They would probably have the correct grade bolts. They might even carry metric bolts. The correct length, who knows, maybe. I knew the name when I read it in the other post, but I don't ever think of places like that. I like to, and hope I can go out into my yard to find a part I need and take it off of a parts vehicle. If it means disabling one of the vehicles then it's time to strip it and get rid of it.
 






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