Water Pump question
Thread Starter
Instructor
Joined: Feb 2003
Posts: 176
Likes: 0
From: jacksonville florida
Water Pump question
What is a reverse flow water pump and do I need one?The 73 vette has a ZZ4 engine,HEI 50,000Volt ignition,Mild roller cam,Aluminum heads,Edelbrock Torker11 Intake,Edelbrock 800CFM Carb,Hedman Headers,True 2.5" Dual exhausts and Auto Transmission (plus another truckload or two of money). :confused:
[Modified by hauk, 11:16 AM 4/9/2003]
[Modified by hauk, 11:17 AM 4/9/2003]
[Modified by hauk, 11:16 AM 4/9/2003]
[Modified by hauk, 11:17 AM 4/9/2003]
Safety Car
Joined: Aug 2000
Posts: 3,711
Likes: 43
From: San Antonio TX
Re: Water Pump question (hauk)
If you're referring to only the waterpump, then a reverse-flow (or to be correct; reverse rotation) pump spins the pump impeller counter-clockwise and is used in serpentine belt configurations. A reverse-flow COOLING system passes the pressure output from the pump through the cylinder heads and then into the water jacket. A standard flow system passes the coolant into the cylinder block then into the heads. A reverse-flow cooling system is used on second generation small blocks to adequately cool the heads to allow a higher compression ratio without entering into thermally induced detonation.
A ZZ4 does not have a reverse-flow cooling system but it may, again depending on how you configure your acccessory drives, require a reverse rotation pump. So if you use V-belts then you use a standard clockwise pump. Serpentine belt you use a reverse rotation pump.
A ZZ4 does not have a reverse-flow cooling system but it may, again depending on how you configure your acccessory drives, require a reverse rotation pump. So if you use V-belts then you use a standard clockwise pump. Serpentine belt you use a reverse rotation pump.
Drifting
Joined: Jan 2002
Posts: 1,645
Likes: 11
From: Schaumburg IL
Re: Water Pump question (REDSHARKONBOYDS)
hauk ----
running the ZZ4 with roller cam, 800 cfm and headers and the A/C in Florida, you are not really running too hot. You might want to switch to a flex fan unless you want to go the route of the DeWitts and Spal fans. I would not get real concerned at 215-220. If you are running 225+ then get real concerned.
running the ZZ4 with roller cam, 800 cfm and headers and the A/C in Florida, you are not really running too hot. You might want to switch to a flex fan unless you want to go the route of the DeWitts and Spal fans. I would not get real concerned at 215-220. If you are running 225+ then get real concerned.
