GMPP serpentine kit help. make/model for replacement use?

[Chad-1stGen]

So I have a GMPP serpentine kit on my car.

I believe it's this one but I don't have the receipt in front of me atm.
http://store.summitracing.com/partde...5&autoview=sku

I've been meaning to get motivated and fix a powersteering pump leak I've had a while now. Well I got motivated and took the powersteering pump off last weekend and found the source of the leak. The high pressure fitting that screws into the back of the pump to which the high pressure hose connects to uses an o ring and it was toast.

The problem is that I can't find the right o-ring to fix it. ID is about 9/16 but 3/32 thickness is too thin and 1/8 (4/32) is too fat.

I tried calling a local chevy dealer to get the o-ring but they only wanted to look up the parts by make/model/year of a vehicle and even though the pump looks similar to my 92 chevy C-1500 it didn't come up with the right o-ring and is slightly different pump based on the positioning of the return line.

Anyone have any suggestions?

3/32 converts to about 2.38mm and 1/8 to about 3.19 IIRC and there are 2.5mm thick o-ring's out there so it is inbetween sizes but I'm not sure if that will be right.

[Mkelcy]

Call Lee Engineering?

[oestek]

I would try calling a GOOD GM performance parts dealer, and ask them to look up the kit and the components individually.. they should be able to find the o-ring by the part number. Heck, the number might be listed for the o-ring in the parts list of the kit. Good luck!

[Chad-1stGen]

I would try calling a GOOD GM performance parts dealer, and ask them to look up the kit and the components individually.. they should be able to find the o-ring by the part number. Heck, the number might be listed for the o-ring in the parts list of the kit. Good luck!

Any idea on who a good GMPP dealer is? I guess it doesn't have to be local if they give me the part number and friendly like.

[toxicz28]

Try a 7/64" o-ring (3/32= 6/64, 1/8= 8/64). I don't know where you'd get one though, Grainger only lists 3/32 (.103" actual) and 1/8 (.139" actual) for a 9/16 id, nothing in between.

Could be metric though.

[TPI Monte SS]

The pump is probably spec'd for an '88-'92 V8 F-body, since they use that exact same serpentine setup. Try using that as your application at the local parts store and see what comes up. Good luck!

[Chad-1stGen]

Stopped in at a GM dealer today with the numbers of the pump. The specific pump I got in my kit came off of a 92 Camaro as OEM.

Of course GM only sells the O-ring in a $36 special order seal kit and none of the skematics the dealer parts guy could pull up had sizes.

Local parts store has a rebuild kit for $20 so I might end up having to do that. Gonna try calling Lee first I think.\

EDIT: Just got off the phone with Lee manufacturing. They told me it's a "113" o-ring which based on my internet sluething skils comes out to be 9/16 ID 3/32 thid and 3/4 OD. So I'm gonna try and pick up a diff 9/16 3/32 O-ring because the first I got just dosn't look right.

[Chevy]

FYI,
this is the same o-ring DSE uses for their connection from the pump to the steering gear. Mine was toast and I just took what was left of it to my local NAPA and told them it was for PS. They had an exact replacement (same color, same material) o-ring they sell for a buck or two.

By the Way, this kind of connection is called a Saginaw fitting (metric tube nut with a funny flare and o-ring). You can also usually buy the fitting plus the o-ring in a pinch from your local autoparts store but it will be around $15. It'll be called "power steering line repair kit" or something like that. Like i said, in a pinch, this might be better than waiting around for one in the mail.

Also these fittings shouldn't be too tight, that's probably why it was leaking...since the o-ring is what does the sealing, over-tightening causes the leak by shredding the o-ring. Just snug it up and watch to see if it leaks. If it does, give it a 1/4 turn at a time until it doesn't leak any more.

Good Luck!

[Chad-1stGen]

Thanks for the tip. Haven't had a chance to fire it up yet and see if the leak is gone.

Though the description above sounds a lot different than what I'm dealing with. The o-ring doesn't seal the hose.