please simplify a water pump replacement for my L98
I may have to replace my waterpump, unfortunately...
how much stuff do I need to take apart?
Last edited by slickfx3; Mar 8, 2012 at 06:22 PM.
apparently, my '84 is harder than yours.....but I took an afternoon to take it all apart and the next afternoon to replace everything.
Pay attention to how it comes apart!
If I didnt have Drs appts tomorrow Id say bring it over we could knock it out quick. Have a special can for leftover bolts

Or go the traditional route
Pay top $ to a shop to do it
Get it home to find out you have to do it over again and replace broken stuff.
Its fun
The Best of Corvette for Corvette Enthusiasts
Store brand stock pumps are $50 new...35 for their rebuilds ( Taiwanese). Rots uh ruck, Joe. Spend $100 and get a decnt one...high vol if nothing else.
The benefits of the task include but are not limited to:
back aches, skinned knuckles, angry family & friends.
Its not complicated, actually there are less than a doz bolts involved. They're just in hard places and there is no working room until parts start to come off.
TIPS...................
buy some 5/8 and 3/4" heater hose. You have to replace several very short pieces when the compressor is off. There is no access at any other time. Have a handful of new hose clamps. Have a new lower radiator hose. Know where there is a new tensioner....in case yours has seals coming apart or is loose.
Mark the rotation of the belt. It should run the same way later as it did before. Many people get them turned around and older belts break or come apart from being reversed.
PB spray for stuck nuts and bolts. Brake parts cleaner to spray off other crud areas. Silicone for the pump gaskets...
Its easy to get trash in the system while its apart. DO NOT fill with your expensive coolant the first time. Thats the kiss of death....Should you fill it with fresh coolant there WILL be a leak or trash in the block or hoses...everytime.
Start with straight water...run it for a day, if there are no leaks THEN drain the radiator thru the petcock and flush any trash or oil film out and then fill the empty rad with good coolant. As I tell you this I have to admit that I just got stung this way....2 gallons of dexcool @ $20 per...ruined because of oil scum that was washed into the block and circulated in the system after assembly. Never do that again...
Have a coat hanger to tie the a/c compressor up and out of the way.Same with the dryer. Try to avoid d/c the pressure lines..... but do NOT kink the a/c lines or attempt to fold them or bend them too far...just tie it up.
Get some orange spray cleaner or engine degreaser that can be hosed off. Do as much cleaning as possible while things are off the block. Take a pic of the air switching valve and they way they are mounted and plumbed. That gets a lot of folks confused when they reassemble.
Its not horrible...just time consuming and more awkward than most. many things with 2 or 3 bolts to remove. Use rags to fill the throttle body...its easier if you remove the duct and MAF so you have more working room.
I do not know, but I'd bet that this is anywhere from $350 to $500 labor at a shop.
Good luck....the first time is always the most difficult. Be glad that you are not changing compressors
...there is a bolt that lives there that you do not want to know.....
OH YEAH>>>>>
flare nut wrench !
chances are that you will have to d/c the 2 steel fuel lines at the intake so the compressor bracket can slide far enough forward to get off the 2 studs that have been mentioned....so get the right fuel system O-rings for the 2 steel lines. And DO NOT run the car or do this with fuel pressure. it'll pour everywhere and that just adds to the tension with everything soaked in gasoline. Bleed pressure off to zero then d/c the lines...even then they may drip during the process. be careful...they will flop around and can get damaged. They will only go back one way..so make note of the position when you disconnect those 2 lines.
Last edited by leesvet; Mar 8, 2012 at 08:44 PM.
this is my second flowkooler from summit, used to be liftime warrantee, now only 2 years, what a piece of crap
my shop quoted 275 for labor, another will install an airtex WP for 390.00
If anything looks rusty, spray on some PB Blaster and let stand over night before turning any bolts.
Pay attention to how it comes apart!
If I didnt have Drs appts tomorrow Id say bring it over we could knock it out quick. Have a special can for leftover bolts

Or go the traditional route
Pay top $ to a shop to do it
Get it home to find out you have to do it over again and replace broken stuff.
Its fun
Put the front on jack stands and remove the front tires.
You can stand in the wheel wells straddling the rotor, getting closer to the work and saving your back.
The cover is leaking oil.....I should have at least addressed the cover while all of that was off. As it turns out, I get to do all this again to address the timing chain and cover.....Yay for well thought out plans!
The cover is leaking oil.....I should have at least addressed the cover while all of that was off. As it turns out, I get to do all this again to address the timing chain and cover.....Yay for well thought out plans!
Should have that water pump of in 20 minutes the second time















