I am converting to a serpentine system from a 2001 s-10. I am almost done, but have a small issue... I bought a s-10 waterpump and it bolts up fine,but it doesnt cover one of the holes on the passenger side "water pump port". Here is a link to someone selling a similiar set-up and they have a picture of what I am describing:

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&ssPageName=STRK:MEWAX:IT&item=370080487495

My main question is this. Is there a waterpump, preferably aluminum, that will use that hole? I can tap and plug as described, but would prefer to find a pump that will work. Suggestions PLEASE!!

Jason

I am converting to a serpentine system from a 2001 s-10. I am almost done, but have a small issue... I bought a s-10 waterpump and it bolts up fine,but it doesnt cover one of the holes on the passenger side "water pump port". Here is a link to someone selling a similiar set-up and they have a picture of what I am describing:

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&ssPageName=STRK:MEWAX:IT&item=370080487495

My main question is this. Is there a waterpump, preferably aluminum, that will use that hole? I can tap and plug as described, but would prefer to find a pump that will work. Suggestions PLEASE!!

Jason

Sounds like you're implying that your water pump isn't wide enough to bolt up correctly to the coolant inlet and outlet in the block:confused:???? Am I correct???

David F.

Are you talking about the small below the pump on pass side? That is a bypass, for the pump, simular to the hose out of the top of a big block. It would be nice to have, but
yoy can plug it. You can drill, tap pipe plug, or there is a small cop plug (freeze plug)
that fits.

Are you talking about the small below the pump on pass side? That is a bypass, for the pump, simular to the hose out of the top of a big block. It would be nice to have, but
yoy can plug it. You can drill, tap pipe plug, or there is a small cop plug (freeze plug)
that fits.

You're probably correct on the bypass hole,I didn't even think about that:noway:.

David F.

David F- the pump bolt holes work perfectly, but I guess the newer blocks/pumps do not use this bypass hole, and the "footprint" does not cover it. Thus my quest to find a pump that is reverse rotation and still uses this hole. Or I can tap and plug as john68 says.

john68- do you happen to know the size of the plug/hole? Otherwise it may be hit and miss.

David F- the pump bolt holes work perfectly, but I guess the newer blocks/pumps do not use this bypass hole, and the "footprint" does not cover it. Thus my quest to find a pump that is reverse rotation and still uses this hole. Or I can tap and plug as john68 says.

john68- do you happen to know the size of the plug/hole? Otherwise it may be hit and miss.

Tapping & plugging the hole will work just fine.

David F.

He will need a bypass in the system somewhere. Old blocks use that as a bypass. That setup is a reverse rotation, but it still needs a bypass. The bypass must be somewhere else in the system on the newer blocks. You should do some more research before you go blocking off a bypass. The newer blocks have the bypass relocated seeing as how it's a reverse rotation. You may be able to get away with using the performance style thermostat like Stewert suggests with their stage 2 small block pumps. They sell a stat that has 3 holes in it. Those holes act as the bypass. In order to run a stage 2 Stewert pump, you MUST use their stat because they remove the bypass from the pump on the stage 2 and the stat with the holes acts as the bypass. Just my thoughts. Something to chek into before you go running the system. You may prevent a bigger problem down the line.

He will need a bypass in the system somewhere. Old blocks use that as a bypass. That setup is a reverse rotation, but it still needs a bypass. The bypass must be somewhere else in the system on the newer blocks. You should do some more research before you go blocking off a bypass. The newer blocks have the bypass relocated seeing as how it's a reverse rotation. You may be able to get away with using the performance style thermostat like Stewert suggests with their stage 2 small block pumps. They sell a stat that has 3 holes in it. Those holes act as the bypass. In order to run a stage 2 Stewert pump, you MUST use their stat because they remove the bypass from the pump on the stage 2 and the stat with the holes acts as the bypass. Just my thoughts. Something to chek into before you go running the system. You may prevent a bigger problem down the line.


Charlie,
Excellent advice:yes:.

When you state..........

" The bypass must be somewhere else in the system on the newer blocks."

Where exactly is the bypass on the newer blocks, if it's not located on the block at the water pump mounting surface??? Info like that would be helpful to individuals like myself in the event that we encounter the same problem.
Thanks,

David F.

I may go with the stewart stat to play it safe, but I did find mention of plugging the bypass in this forum. It seems like it may actually lower temps if using a stat that is drilled suchas the the stewart ones. Learning something everyday!

http://www.chevytalk.org/fusionbb/showtopic.php?tid/187700/

The only bypass you will need is two 1/4 inch holes drilled in the perimeter of the thermostat. This should allow sufficient bypass. If your water pump has a fitting in the top you can also plumb it to the intake for increased flow.