Apex

Anyone done this? I'm thinking of stainless steel, given the rusty condition exhibited in this latest water pump change.

Problem is, the PET does not list this as an item, Sunset says if I prod them they might figure it out... what about you guys? Anyone have specs on what they should be?

Here's the McMaster-Carr stainless steel stud page.

Any insights appreciated, thanks!

Yummybud924

not sure if stainless steel is a good idea. if you break a stainless steel stud in the block you'll have a real hard time drilling stainless steel out.....

when I changed my water pump I had to helicoil every single thread for the bolts as they all stripped when I removed the the old rusted on bolts. I broke one bolt in the block also but was lucky didn't break any studs.

Apex

Yummy - you gotta good point there. What strength steel? I'd normally just go for the strongest. Anything building is worth overbuilding, right? Haha. But then I think about the relatively soft aluminum block and wonder if something a little softer is more appropriate.

What say the metallurgical engineers in the group?

The DareDevil

I need to replace the waterpump studs as well. The PO replaced the pump, even with one stud broken in the block.

I found this info from Pelican/Rennlist: Edit: This info comes from the last post in: http://forums.pelicanparts.com/showt...ater+pump+stud

Apex

DareDevil - fantastic sleuthing. Thanks so much.

The DareDevil

I've yet to stop by home depot, or the likes, to see if they have something similar in stock. If you have a chance, let us know.

944Ross

Would you seriously trust a Home Depot stud made in the cheapest place on earth that they can find?!

Here's what you need:

http://www.mcmaster.com/#93275a014/=2qgbbj

Note that they are made of certified materials with very high tensile strength. They aren't cheap, but I'd guess cheaper than Porsche.

Well, crap, the thread pitch is wrong... M6 x 1.25 is very un-standard. Any chance there's a mistake and it really is 1.0?

Mike C.

I believe 944online sells the correct part and it's not expensive...

The DareDevil

http://944online.com/cgi-bin/ASI_Sto...ystem-944turbo

$20

V2Rocket

JW, but why not use a bolt/washer with some antisieze?

944Ross

The only problem would be the same as with studs; if the threads are truly M6x1.25, no one I can find makes them. I have to believe they are really M6x1.0, I am unable to find anyone who makes a 1.0 stud or bolt.

V2Rocket

i have a huggeee everything-ever-made hardware store that i can look for that size maybe this week, ill let you know

Mike C.

Um.. that's for the water pump studs. Try http://944online.com/cgi-bin/ASI_Sto...gineblock-9442 (only $5.45 ea)

944Ross

I think that's what we're talking about, the four water pump studs. At first I thought the question was about the belt tensioner stud, too.

The DareDevil

We *are*, in fact, talking about the four studs.