Date: 29 Nov 2004 15:20:38 GMT
From: Dave Hinz <>
Subject: Re: Saab 99 water pump thread?

On Sun, 28 Nov 2004 13:37:19 +1300, Richard Sutherland-Smith <> wrote: > In message <> > Dave Hinz <> wrote: > >> Anyway, 12mm left hand, maybe, for the new, and 6mm left hand for the >> old style is my guess, but I'd love to get a confirmation. I don't have >> thread gages for metric... > Just got my spare brand new 99 water-pump out. part 8358491 with 12 > cogs, as opposed to the 8 cog variety, depending on your auxilliary > shaft cog number. It has a 12mm x 1.5 thread. Thanks, Richard. I ended up spending some quality time in my basement/ machine shop this weekend. I've got a Rockwell lathe, with the metric threading gears as an (unused) accessory. They were still in the original box from, probably, the 1970's. The water pump tool had the 12mm x 1.5 LH thread you mention, like the 12-cog water pump shafts. The balance shaft (layshaft?) in the B engine that I put together had 8 cogs, because it's apparently from an older 99. No matter (I have the right distributor gear also). So...the broken water pump shaft (teeth gone, corresponding with the teeth gone on the layshaft of the engine it had been in, the KaBoom engine), went into the lathe, cut off, turned down to the proper diameter, and I setup the lathe & cut the appropriate threads onto the other end of it. So, I now have a double-ended stud, the bottom of which screws into the top of an 8-cog water pump shaft, to make the top of it look like a 12-cog waterpump shaft, so the tool works. Possibly the only one in the state of Wisconsin, at least. The pump pulled right out, the new one went in very well with the right tools, and it holds water now which is sort of a main feature of a water pump. Got some gasket material today, will put it all back together hopefully tonight and start it up. The B-Engine water pump is a pain in the ass. Dave Hinz

Return to Main Index

The content on this site may not be republished without permission. Copyright © 1988-2020 - The Saab Network -
For usage guidelines, see the Mission and Purpose Page.
[Contact | Site Map | on Facebook | on Twitter | Shop Amazon via TSN | Site Donations]