remove Meziere WP
Thread Starter
Racer
Joined: Sep 2012
Posts: 491
Likes: 40
From: Mardi Gras City
St. Jude Donor '19
remove Meziere WP
What parts do i need to return to normal pump? i think perhaps the cam drive pin and some O rings ? plan to use new GM pump, is this a good choice? i have changed everything at this point, except pump and rad., no leaks but car still pegs tamp @ 245 in any type of traffic , 210 at 70 on hwy. will also service opti while pump is off, what is best brand of cap and rotor ? thanks JO'N
Burning Brakes
Joined: Sep 2008
Posts: 810
Likes: 58
From: Alva Florida
I would have checked the rest of the cooling system before anything. if working, electric water pumps are supposed to be an improvement...not cause problems.
It will probably still run hot after you do the swap - back...
Regardless, most people seem to like the msd cap and rotor, even if they don't prefer their opti distributors...
It will probably still run hot after you do the swap - back...
Regardless, most people seem to like the msd cap and rotor, even if they don't prefer their opti distributors...
Melting Slicks
Joined: Jan 2009
Posts: 3,482
Likes: 196
From: folsom california
"except radiator" ? have you pulled the radiator and cleaned it? or cleaned the a/c condenser in front of it? its amazing how much crap piles up in front of these items; its also amazing how much crap gets stuck in between the cooling fins themselves.
Thread Starter
Racer
Joined: Sep 2012
Posts: 491
Likes: 40
From: Mardi Gras City
St. Jude Donor '19
paid shop $$ to check, change ,flush,clean ,pull knock sensor,hoses ,thermostat (180) etc...no change at all. heat continues to climb at speed, peg 260 in traffic. to answer my own question , 10128334 bushing over cam shaft drive pin is removed for electric pump install, all other parts remain the same. soooo.... temp does NOT go down @ 70 , leads me to suspect bad radiator ?. shop tells me electric pump works, but is so quiet and smooth running they had hard time just to find this out.
Melting Slicks
Joined: Jan 2009
Posts: 3,482
Likes: 196
From: folsom california
"bad" radiator? more likely dirty a/c condenser and radiator; trust me, if they didn't pull your radiator to clean it, it ain't clean
to convert back to oem pump at a minimum you will need (from C4 parts manual @ 1-17 and 1-16):
302. water pump drive #10219554
304. seal, water pump bearing #10217886
311, seal, water pump drive shaft #12553792
317, coupling, water pump drive shaft #10128334
318, seal water pump drive shaft #12553792
if any of these remain on your engine is anyone's guess
to convert back to oem pump at a minimum you will need (from C4 parts manual @ 1-17 and 1-16):
302. water pump drive #10219554
304. seal, water pump bearing #10217886
311, seal, water pump drive shaft #12553792
317, coupling, water pump drive shaft #10128334
318, seal water pump drive shaft #12553792
if any of these remain on your engine is anyone's guess
Last edited by mtwoolford; Aug 14, 2017 at 04:30 PM.
Thread Starter
Racer
Joined: Sep 2012
Posts: 491
Likes: 40
From: Mardi Gras City
St. Jude Donor '19
well crap, did not plan on replacing other misc. parts/ seals etc.spoke to person @ MEZIERE, was told only that the cam shaft pin bushing should be missing. who the hell knows, i'll start with new radiator and hope for the best.nothing wrong with it money won't fix,problem is i have spent $6k in last 1,600 miles and have a car i can't drive.
Melting Slicks
Joined: Jan 2009
Posts: 3,482
Likes: 196
From: folsom california
well crap, did not plan on replacing other misc. parts/ seals etc.spoke to person @ MEZIERE, was told only that the cam shaft pin bushing should be missing. who the hell knows, i'll start with new radiator and hope for the best.nothing wrong with it money won't fix,problem is i have spent $6k in last 1,600 miles and have a car i can't drive.
Cleaning radiators is, or should be almost a routine maintenance item with these cars, but I would not overlook a failing water pump; I've never taken a MEZIERE apart, but since it is an direct current pump, it has to have brushes and a communtator which could and probably do, fail over time (rather than catastrophically, all at once).
Last edited by mtwoolford; Aug 14, 2017 at 05:48 PM.
Thread Starter
Racer
Joined: Sep 2012
Posts: 491
Likes: 40
From: Mardi Gras City
St. Jude Donor '19
pump puts out same flow at 10 mph as 100. if temp goes up with speed wouldn't this indicate a blocked or bad radiator ? if there was zero coolant flow, temp should fall just from air flow alone at speed.(?). shop had to use stethoscope to to find out if pump was running, problem is you can only feel engine vibration, if engine is off pump is too hot to touch.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
5 Best & 5 Worst Corvette Daily Drivers
Joe Kucinski
The Headlights of Every Corvette Generation Explained
Joe Kucinski
5 Best & 5 Most Overrated Corvette Track Packages of All Time!
Joe Kucinski
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
Le Mans Master
Joined: Aug 1999
Posts: 7,340
Likes: 137
From: WilkesBarre PA
Is your air dam still in place? Radiator and condenser clean? Is the system bleed with all the air out? Fans running like they should? I run a Meziere pump and BeCool radiator, the car runs 190-200 all the time.
Thread Starter
Racer
Joined: Sep 2012
Posts: 491
Likes: 40
From: Mardi Gras City
St. Jude Donor '19
everything has been checked,see post 4. will take car to another shop and have radiator pulled,checked and or replaced. at least that way i will know for sure getting good air flow thru system. both fans work, pump seems to work so we shall said the blind man. overheating may have been ongoing issue, as PO installed fan over ride switch under dash. no service records,so who knows.....
Burning Brakes
Joined: Sep 2008
Posts: 810
Likes: 58
From: Alva Florida
If you have to replace the drive gear, you will have to pull the intake manifold to put replace it. I'd certainly look at all the items mentioned above and/or get a new meziere pump.
How many volts is the electric pump drawing? that would be my first thing to check...
Also, let a reputable mechanic diagnosis it. You telling them what to fix, only makes then do what you ask for. A problem like this could be anything from a plastic bag in front of your condenser, to a blown head gasket....
How many volts is the electric pump drawing? that would be my first thing to check...
Also, let a reputable mechanic diagnosis it. You telling them what to fix, only makes then do what you ask for. A problem like this could be anything from a plastic bag in front of your condenser, to a blown head gasket....
Thread Starter
Racer
Joined: Sep 2012
Posts: 491
Likes: 40
From: Mardi Gras City
St. Jude Donor '19
If you have to replace the drive gear, you will have to pull the intake manifold to put replace it. I'd certainly look at all the items mentioned above and/or get a new meziere pump.
How many volts is the electric pump drawing? that would be my first thing to check...
Also, let a reputable mechanic diagnosis it. You telling them what to fix, only makes then do what you ask for. A problem like this could be anything from a plastic bag in front of your condenser, to a blown head gasket....
How many volts is the electric pump drawing? that would be my first thing to check...
Also, let a reputable mechanic diagnosis it. You telling them what to fix, only makes then do what you ask for. A problem like this could be anything from a plastic bag in front of your condenser, to a blown head gasket....
Thread Starter
Racer
Joined: Sep 2012
Posts: 491
Likes: 40
From: Mardi Gras City
St. Jude Donor '19
Thread Starter
Racer
Joined: Sep 2012
Posts: 491
Likes: 40
From: Mardi Gras City
St. Jude Donor '19
New radiator fixed nothing. old unit was cleaned week before, so mostly just a waste of money. car ran 244 in light city traffic, have not driven on hi way yet.i know one thing, i'll be GD if spend $800 for s new electric pump.
Melting Slicks
Joined: Jan 2009
Posts: 3,482
Likes: 196
From: folsom california
but yesterday's crisis du jour was finding out that the water pump that wasn't pumping water on a 12 cylinder ship's diesel had an impeller that came adrift = no water being pumped = no cooling. Sooo, it can and does happen; Sooo if your pump is sooo quiet it takes a stethoscope to hear, I suspect the motor is turning but the impeller is not. My suggestion is to pull the pump, separate the motor from the pump casing and look for a problem there...after all, you've done everything else."Once every other possibility has been eliminated, what is left, no matter how improbable, must be the answer"; Mister Spock...no not the baby doctor, the OTHER Mister Spock .
Thread Starter
Racer
Joined: Sep 2012
Posts: 491
Likes: 40
From: Mardi Gras City
St. Jude Donor '19
2nd mechanic told me this am that pump was "working " . he also told me "the best thing to do with hot rod crap is to change back to stock". He is 100 % right, a new mechanical pump may be plan f or g.
Melting Slicks
Joined: Jan 2009
Posts: 3,482
Likes: 196
From: folsom california
