This seems like a no-brainer, but is there any reason not to just use regular allen head bolts (or hex head) to replace the torx or 12star female bolts that are stock on the CV joints? What about the stock wave washers, wouldn't a lock washer work just fine?
Doug C
I use allen heads... got'em @ Elliot's Hareware in Plano...
If you get longer ones, there's enough room on the back for a nylock nut to help prevent them from coming loose.
QUOTE (bondo @ Aug 24 2005, 11:16 AM) |
If you get longer ones, there's enough room on the back for a nylock nut to help prevent them from coming loose. |
The proper lock washers are the ones with "teeth" (called schnorr washers I think), not the wavy ones. Likely used for a reason. I would use them with whatever bolts you use.
the Schnorr washer is conical, like a Belleville washer, in addition to being ribbed. the last set of CV bolts i got for the 911 came in as Allen although the ones in the car are triple-square. just make sure any substitute is at least the same grade as the specified fastener - 12,9; the 8mm fasteners used in the 914 are pretty highly stressed.
Yea, great idea Bondo.. I'll be going by Elliot's this weekend and pick-up some of these bolts in a longer length and some ny-lock nuts too. But I guess I'll use plain old lock washers 'cause I don't want to make a special order or trip for them. Hope that doesn't come back to haunt me
Doug C
QUOTE (DougC @ Aug 24 2005, 08:48 AM) |
Yea, great idea Bondo.. I'll be going by Elliot's this weekend and pick-up some of these bolts in a longer length and some ny-lock nuts too. But I guess I'll use plain old lock washers 'cause I don't want to make a special order or trip for them. Hope that doesn't come back to haunt me Doug C |
QUOTE (tat2dphreak @ Aug 24 2005, 08:13 AM) |
I use allen heads... got'em @ Elliot's Hareware in Plano... |
QUOTE (DougC @ Aug 24 2005, 09:48 AM) |
Yea, great idea Bondo.. I'll be going by Elliot's this weekend and pick-up some of these bolts in a longer length and some ny-lock nuts too. But I guess I'll use plain old lock washers 'cause I don't want to make a special order or trip for them. Hope that doesn't come back to haunt me Doug C |
QUOTE (Cap'n Krusty @ Aug 24 2005, 10:43 AM) | ||
It is interesting to see that the engineering resources of this mostly-amateur forum are collectively smarter than the engineers at Lobro, VW, and Porsche combined. Of course when the research is driven by low cost, you're apt to get different results than when the question of quality and longevity come into play. The bolts in question are 12.9, and take substantial torque when compared to conventional 8mm bolts (nearly double). They DO NOT sustain a shear load, they hold the joint tight to the flange. The pins take the shear. The washers are used to reduce the potential for the bolts to back out. They depend on UNMARRED plates and the condition of both the curvature of the washer and the ribs on the washers themselves. Bolts stretched from previous overtorquing also contribute to failure. I see no reason not to use the "old fashioned" inhex bolts, but the triple square bolts are an "upgrade" as internet car people are so fond of saying, and they're easier to torque, as well as causing less wear on the tool. Longer bolts of the SAME STRENGTH may be OK, but the locking nuts don't have a flat and parallel surface on which to seat, and there MAY not be room for them on the outer end of the axle. Split and wavy washers HAVE NO PLACE here. Don't come looking to me for a used tranny because your axle ate your starter! The Cap'n |
QUOTE (jr91472 @ Aug 24 2005, 01:01 PM) | ||
Hey Wayne, where is Elliotts? My car came with allen head bolts, always worked well for me. But a couple are starting to get a little worn. Need some fresh ones. JR |
QUOTE (bondo @ Aug 24 2005, 02:25 PM) |
Do 911 CVs use differerent bolts and wahsers? I ask because I will be using 911 CVs and adapters, and I'm not sure what to use because I have never had a 911. It seems like it might be different because they use 6 bolts instead of 4 bolts and 2 pins. |
It is interesting to see that the engineering resources of this mostly-amateur forum are collectively smarter than the engineers at Lobro, VW, and Porsche combined. Of course when the research is driven by low cost, you're apt to get different results than when the question of quality and longevity come into play.
I don't quite understand what this means But, the reason I'd ask such a question is because (AFAIK) the original style bolt head was standard in the early '70s and there had been (possible) improvements in hardware quality (Allen, etc.). Just didn't want anyone to think I was trying to outsmart the factory but rather use better (read upgrade) if possible.
Doug C
QUOTE (ArtechnikA @ Aug 24 2005, 10:42 AM) | ||
i'm not the Cap'n but sometimes i do play his straight man on the Internet... (the *really* earlly Nadella halfshaft cars used 4 bolts only, on the inner joint, and the outer was integral with the stub axle.) SOME 911's use 6 bolts, some use 4 bolts and 2 pins like 914's. up to '68 (the SWB cars) they also used 8mm bolts; from the LWB cars on, they are 10mm bolts. oh -- 8mm CV bolts are torqued to 4,3MKg -- near 'nuff 30 lbs/ft. (for comparison, a "standard" 8mm fastener typically gets about 2,5MKg.) a 911's 10mm bolts are torqued to 8,3MKg - ~57 lbs/ft. |
my triple squares were pretty ragged and i replaced them with allens.
i loc-tighted mine in. dont plan or want them comming out any time soon.
Powered by Invision Power Board (http://www.invisionboard.com)
© Invision Power Services (http://www.invisionpower.com)