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Car Forum / Driving, Maintenance, Tuning / Maintenance and Repair / August 2006Small block short water pump orientation
I am doing an engine swap for a SBC and the power steering pump (Saginaw) is in the way. I can mount it on the passenger side, but that means turning the short water pump upside down. Can the water pump be mounted upside down? Anything special about doing it that way? Thanks for the help. Dave > I am doing an engine swap for a SBC and the power steering pump > (Saginaw) is in the way. I can mount it on the passenger side, but [quoted text clipped - 4 lines] > > Dave 1)your lower rad hose inlet will be pointed to the driver side, so you might have a hard time hooking it up... 2)the heater hose connection that's normally on top would be pretty near impossible to use if you flipped it over. Is it not possible to keep the pump on the driver side? There are quite a few different sets of stock chevy brackets over the years, and as long as you can get the pulleys lined up, it doesn't really matter where the pump goes - on my race Camaro I had to make my own (cheesy looking but effective) bracket because nothing lined up with the pump I had. Ray On the pump I have, the heater hose comes out the side, not the top, so that isn't an issue. The radiator hose will be pointed to the driver side and I can specify that the radiator have a driver side inlet. The bigger question is does it make a difference if the pump is upside down. Any holes to plug? > > I am doing an engine swap for a SBC and the power steering pump > > (Saginaw) is in the way. I can mount it on the passenger side, but [quoted text clipped - 18 lines] > > Ray How long do you want the engine to last? Normally the channels inside are designed for flow in a certain direction. Reverse that and you will likely get water boils or air hot spots and start burning things like valve seals, valves, etc.... The engines that 'are' reverse flow have special bleed circuits to keep the air out of the heads as far as I know. I think I would work on the mounts a little more. A few shims here and there can line up lots of pulleys. Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's Canadian Off Road Trips Photos: Non members can still view! Jan/06 http://www.imagestation.com/album/pictures.html?id=2115147590 (More Off Road album links at bottom of the view page) > On the pump I have, the heater hose comes out the side, not the top, so > that isn't an issue. The radiator hose will be pointed to the driver [quoted text clipped - 25 lines] > > > > Ray > How long do you want the engine to last? > [quoted text clipped - 4 lines] > The engines that 'are' reverse flow have special bleed circuits to keep > the air out of the heads as far as I know. Turning the pump over isn't going to reverse the flow - the pulley will still turn the same direction. Even if it did reverse the rotation direction it wouldn't reverse the flow since this is a centrifugal pump. although, running it with the rotation backwards will make it pump much less efficiently. -jim > I think I would work on the mounts a little more. A few shims here and > there can line up lots of pulleys. [quoted text clipped - 35 lines] > > > > > > Ray I was thinking the two armed pump, I didn't think the other pump's bolts or passages were symmetrical so it could be flipped??? Mike > > How long do you want the engine to last? > > [quoted text clipped - 56 lines] > http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups > ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- > I was thinking the two armed pump, I didn't think the other pump's bolts > or passages were symmetrical so it could be flipped??? I'm not completely sure of the symmetry or whether it can be made to fit if it's flipped 180° (I wasn't commenting on that question), but if you can flip it the pulley will still end up rotating the same direction. And besides regardless of the rotation direction the fluid will still flow in the same port and out the same ports. You can't change that without redesigning the pump outer casting. If you try to run it backwards it will just greatly reduce the amount of flow you get for a given speed. But anyway, to change the rotation direction you would have to flip it so the output ports faced the radiator, so I don't think that is being contemplated. -jim > Mike > [quoted text clipped - 58 lines] > > http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups > > ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- > How long do you want the engine to last? > [quoted text clipped - 7 lines] > I think I would work on the mounts a little more. A few shims here and > there can line up lots of pulleys. the sbc chevy water pump is symmetrical on the inside short of the "suction" (lower rad hose) part. There are two holes in the block where water exits the pump and if you flip the pump over it doesn't look like it would make a lick of difference. I still don't think flipping it would work for the OP, because the bolt hole he's looking for on the bottom for the ps bracket will now be on the top left, but I can't see any internal problems with the pump working upside down. http://static.summitracing.com/global/images/prod/large/sum-g1662-l_w.jpg http://www.edelbrock.com/automotive/waterpumps.html > > How long do you want the engine to last? > > [quoted text clipped - 20 lines] > http://static.summitracing.com/global/images/prod/large/sum-g1662-l_w.jpg > http://www.edelbrock.com/automotive/waterpumps.html There still is a bypass circuit to deal with isn't there? Lack of that might require a custom thermostat. Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's Canadian Off Road Trips Photos: Non members can still view! Jan/06 http://www.imagestation.com/album/pictures.html?id=2115147590 (More Off Road album links at bottom of the view page) |
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