mr_bock

I am starting to gather parts for an engine drop and would like to upgrade my valve cover screws. Does anyone have the full size description for these screws? I did the search along with a google search of the OEM part number with no results.

Thanks in advance!!!!!

IXLR8

M6 x 30 (1.0 pitch - standard pitch) socket head cap screw.

There are 38 of them; 11 on each lower valve cover and 8 on each upper valve cover.

Pics here.

BLT4SPD

I bought a complete set from Autohaus AZ for my lowers. They had them in stock and ready to ship. They were all individually wrapped, with the washer, in little baggies and it took almost as long to get them unpacked as it did to install them!

CaptainGSR

Pepboys has some black ones...

mr_bock

Good info.... Thanks!!!

I will check out ARP Fasteners for something high quality that looks good and will last.

BLT4SPD

ARP might be a little bit of overkill for a valve cover application. Connecting rods and head studs? Yes. Valve covers? I think some OEM stuff is just fine...maybe even perfect.

Warpig

With the metal being so soft on the OEM fasteners and people having trouble removing them without stripping the allen heads has anyone investigated replacing them all with better normal hex heads that you can use a socket to remove. I may be doing a wire change in the not too distant future and would also like to take care of my light seepage on my valve covers while im in there.

Nick

993C4RS

I've found it hard not to strip at least one when removing.. I dis-agree with
them being perfect or they would still be used.. I may change mine when
I do lower covers to male hex like those used on present cup motors...
I've never stripped one! I kinda hate allen bolts! and DON'T use the black
oxide they will rust in no time!

IXLR8

They are a grade 8.8 fastener just like any others in that grade....so softer, no harder.

I'd bet the problems experienced are:

• hex key not fully inserted into fastener due to rust.
• hex key not fully inserted due to not being able to get at it head on.
• an incorrect sized hex key being used...maybe a 3/16" instead of 5 mm.
• a cheap hex bit being used.

deekay911

also might want to be careful with alternate screw types due to metal differences with cam tower.

IXLR8

I put a thin coat of anti-seize compound on the threads.

AOW162435

Mmmmmm.


Andreas

deekay911

wow - $380 in valve cover screws - and you would never even see them!

IXLR8

Nice Andreas, but my 993 came from the factory with them...option 999.

Seriously, $363.66 vs $18.24.

AOW162435

There was an element of humor to my post...


Andreas