Another Water Pump Post - ZR-1 Net Registry Forums

-=Jeff=- · 09-13-2009

Looks like I took mine out by installing a new tensioner..

Well, not completely, but it is leaking I suspect..

Anyway, when I go to replace it I don't need to remove the crank pulley do I?

09-13-2009

Quote:

Originally Posted by -=Jeff=-

Looks like I took mine out by installing a new tensioner..

Well, not completely, but it is leaking I suspect..

Anyway, when I go to replace it I don't need to remove the crank pulley do I?

No, the crank pulley does not have to be removed. I remember when I did mine it was the first experience I had working on the LT5 and it's not as easy as other cars, just more stuff in the way to get to it.

GOLDCYLON · 09-13-2009

Quote:

Originally Posted by -=Jeff=-

Looks like I took mine out by installing a new tensioner..

Well, not completely, but it is leaking I suspect..

Anyway, when I go to replace it I don't need to remove the crank pulley do I?

No not at all. remove the air horn and look down its really not that bad of a job. Maybe a time for new hoses while you are there Jeff!!! A lot of the mystery of the LT5 goes away the minute the Air horn is removed. I suggest making sure the bots on the pump are tight however before you tear it off the front of the block.

09-13-2009

Quote:

Originally Posted by GOLDCYLON

Maybe a time for new hoses while you are there Jeff

Yes, go for the SAMCOs if you don't already have them.

-=Jeff=- · 09-13-2009

Got samcos on already.. I think it is the pump. There is a noise I have heard too, when running, so I am pretty sure the pump is bad or almost totally bad..

hard to see anything with the car together and pump pulley on

GOLDCYLON · 09-14-2009

Well then sounds like its time for a water pump replacement. Well at least you wont need to buy hoses. GC

09-14-2009

Quote:

Originally Posted by -=Jeff=-

Got samcos on already.. I think it is the pump. There is a noise I have heard too, when running, so I am pretty sure the pump is bad or almost totally bad..

hard to see anything with the car together and pump pulley on

Yes, sounds just like mine....it was a very slow leak and I could not find it otherwise until I got to the pump as the drip was coming down and off another location making it seem like it was elsewhere. I hope you have a replacement already since some of the prices have gotten just ridiculous. It seems the best price ones now are from Corvette Central. At least the SAMCOs are easy to remove unlike the stock ones that seem to almost need to be cut off after awhile.

GOLDCYLON · 09-14-2009

Quote:

Originally Posted by HAWAIIZR-1

At least the SAMCOs are easy to remove unlike the stock ones that seem to almost need to be cut off after awhile.

Yep those Dorman style clamps GM used are real fun in tight corners trying to get off. Especially down by the thermostat. The Samcos are so much easier, just wish they went a little easier on the Samco logo stamp thats everywhere. To be honest however, its nice to have a vendor that still supports the LT5. Those are becoming few and far between.

-=Jeff=- · 09-14-2009

good to hear on the Samco hoses coming off. As for a pump, I do not have one yet, but the Corvette Central one seems to be the best deal, aside from a rebuilt

jrd1990zr1 · 09-14-2009

Quote:

Originally Posted by -=Jeff=-

good to hear on the Samco hoses coming off. As for a pump, I do not have one yet, but the Corvette Central one seems to be the best deal, aside from a rebuilt

Jeff,

SGREG has an OEM one he has been trying to sell. Drop him a PM.

The noise you have heard can you tell when it is the waterpump? I have a noise which I think is my front alternator bearing starting to go.

Good luck with the repair, John

09-13-2009	#1
-=Jeff=- Join Date: Jul 2007 Location: Bartlett, IL Posts: 7,173	Another Water Pump Post Looks like I took mine out by installing a new tensioner.. Well, not completely, but it is leaking I suspect.. Anyway, when I go to replace it I don't need to remove the crank pulley do I? __________________ 1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Custom Interior NCM Lifetime Member #978

09-13-2009	#5
-=Jeff=- Join Date: Jul 2007 Location: Bartlett, IL Posts: 7,173	Re: Another Water Pump Post Got samcos on already.. I think it is the pump. There is a noise I have heard too, when running, so I am pretty sure the pump is bad or almost totally bad.. hard to see anything with the car together and pump pulley on __________________ 1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Custom Interior NCM Lifetime Member #978

09-14-2009	#6
GOLDCYLON Join Date: May 2007 Location: Peoria, AZ Posts: 9,160	Re: Another Water Pump Post Well then sounds like its time for a water pump replacement. Well at least you wont need to buy hoses. GC __________________ GOLDCYLON - 91 ZR-1 #2014 GOLDCYLON - 90 ZR-1 #2794, 4L60e (Formerly Schrade's) GOLDCYLON - 11 CTS-V Arizona State Director 91 WHITE/BLACK #2014. 380 P&P&PCed,Ported Heads, Jeal Long tubes, Corsa Exhaust/FIKSE FM-5s /LED TLs, LED Headlights, Front Wilwood 6 piston narrowlite calipers and rear Wilwood caliper street shop mod,CNCed Coolant Pipes,TPI Cvr,Filter cover,Stainless Bolts, DRM/DOM PROM /ZFDOC mod build #102,DRLs,BMAD with stainless Debris Screen,Coplan Air Blaster, Pioneer APP Radio 4,Brey-Krause HB,Sub Bar,Fire extinguisher seat mount,DRM Coilovers,LEDs everywhere,Compass mirror (orange),V1 DIC hidden display, Homelink sun visor, Carbon Fiber top x3 and APSIS Carbon Fiber interior, APSIS CF Steering Wheel/NAPA Leather, Banski trailing arms, Guldstrand front suspension,urethane bushings from Prothane (total suspension) ZFDoc drive shaft safety loop, raptor shift light (orange),AO engineering louver front plate, Console seat cushion, 96CE seats with black custom Sheepskins, ss billet catch can,Viper remote entry/alarm,Cragar Rear Louvers,LED side louver lights, Dewitts Radiator with SPAL fans and a Woods 160 T-Stat 90 RED/BLACK #2794. 4L60e Automatic Stage V by RPM Transmission, TCI Dedicated TCM, OBX Stainless Headers, Corsa Exhaust, SAN Secondaries and Haibeck PROM, Exotic Muscle Coil overs, LED Interior Lights, LED Tail Lights, LED Headlights, 94 Sport seats with black custom Sheepskins , Cragar rear louvers, GS Front calipers, Banski Trailing arms, APSIS Carbon Fiber steering wheel, Front and Rear Baer Eradispeeds, DRLs, Guldstrand front suspension,urethane bushings from Prothane (total suspension), Dewitt's Raditor with Dual SPAL fans and a Haibeck 170 T-Stat 11 RED/GREY CTS-V

09-14-2009	#9
-=Jeff=- Join Date: Jul 2007 Location: Bartlett, IL Posts: 7,173	Re: Another Water Pump Post good to hear on the Samco hoses coming off. As for a pump, I do not have one yet, but the Corvette Central one seems to be the best deal, aside from a rebuilt __________________ 1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Custom Interior NCM Lifetime Member #978