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Fri Sep 13, 2013 7:59 am

Hey quick questions sambinians. I picked my 66 single up in pieces and ..well missing most. I'm ready to put the clutch/pressure plate on and move forward, but I'm missing the pressure plate bolts. Can anybody tell me what size they are, and torque? Thanks!

Fri Sep 13, 2013 8:05 am

M8x20

I think they are torqued to 18lbs using a star pattern

Fri Sep 13, 2013 8:15 am

crofty wrote: M8x20

I think they are torqued to 18lbs using a star pattern

Thanks! off to the hardware store I go. :D

Fri Sep 13, 2013 8:29 am

They're hardened Grade 10.8 so do NOT get soft bolts.

Fri Sep 13, 2013 8:55 am

Glenn wrote: They're hardened Grade 10.8 so do NOT get soft bolts.

Thanks Glenn, good looking out. 8)

Fri Sep 13, 2013 10:52 am

Glenn wrote: They're hardened Grade 10.8 so do get soft bolts.

Unless Glenn is spoofin' on the guy, I think he really meant to say "don"t" get soft bolts. Those should be special "hardened" bolts (with cut lock washers), don't just buy the normal stuff at the hardware store...

Bill Bowman

Fri Sep 13, 2013 12:13 pm

Sorry.. .brain fart.

soft bolts will snap. You want hardened bolts.

Thanks Bill.

Fri Sep 13, 2013 1:01 pm

interesting. i've only seen grade 8.8 on any original engine i've ever pulled apart, never once had a problem with "snapped" 8.8 bolts (new or used), the factory parts book does not specify higher grade bolts, and all the "without guesswork" books i looked at specify an 8G (8.8 ) bolt for this particular application. they also specify spring washers, not split lock washers.

Fri Sep 13, 2013 9:11 pm

That is what I have always used.

Sat Sep 14, 2013 8:56 am

Anybody know the thread pitch off hand? I do know it's not m8x1.0. I picked some up and well those didn't fit. I couldn't find hardened 1.5 or 1.25 in the immediate area. Thanks!

Sat Sep 14, 2013 9:36 am

My guess is the common 1.25 pitch

Sat Sep 14, 2013 9:37 am

Campy wrote: That is what I have always used.

here too even with a 1914 and kennedy plate

Sat Sep 14, 2013 9:44 am

crofty wrote: Campy wrote: That is what I have always used.

here too even with a 1914 and kennedy plate

Funny you say Kennedy. I'm putting a 2.2 Subie engine in with a Kennedy adapter. Here's a link if you want to take a look

http://kustomcoachwerks.com/forums/viewtopic.php?t=7676

Sat Sep 14, 2013 12:23 pm

The bolts are M8 x 25mm x 1.25 pitch, grade 8.8.

I have seen other cars use 10.9 spec bolts on the pressure plate (Volvo for one), but those cars also make more HP and have more spring pressure than a stock VW does. Of course it wouldn't hurt to upgrade to harder bolts on any application.

All the torque specs you need are here in the Technical Archives...
http://www.thesamba.com/vw/archives/manuals/1971withoutguesswork.php

Sat Sep 14, 2013 1:40 pm

61SNRF wrote: The bolts are M8 x 25mm x 1.25 pitch, grade 8.8.

I have seen other cars use 10.9 spec bolts on the pressure plate (Volvo for one), but those cars also make more HP and have more spring pressure than a stock VW does. Of course it wouldn't hurt to upgrade to harder bolts on any application.

All the torque specs you need are here in the Technical Archives...
http://www.thesamba.com/vw/archives/manuals/1971withoutguesswork.php

I'll probably go with the harder bolts, couldn`t hurt. Thanks for the info!

Sun Sep 15, 2013 8:46 pm

Glenn wrote: They're hardened Grade 10.8 so do NOT get soft bolts.
No such thing as grade 10.8, you mean 10.9

The current replacement part shows an 8.8 bolt N 10 2210 4

Sun Sep 15, 2013 8:51 pm

Got mine at NAPA Auto Parts!

Sun Sep 15, 2013 10:13 pm

Helical spring washers are an ineffective way from keeping nuts and bolts from loosening and can actually accelerate their loosening.

Wed Sep 18, 2013 8:57 am

from another post, for future readers of this thread

bill may wrote: 10.9 german is grade 8 american. grade 12 german is 10 grade american. those goofy bolts on a vw with 8 are grade 6 american. this why hardware stores carry bolts with 8 on them instead of 10 which would be stronger. don't confuse grade 10 metric with grade 10 sae (american)

Wed Sep 18, 2013 5:20 pm

j.pickens wrote: The current replacement part shows an 8.8 bolt N 10 2210 4

Where's that from j. ? The parts list at OACDP doesn't say the grade. Just curious.