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Architecture & Porsche's
Join Date: Jan 2006
Location: Austin, Texas
Posts: 3,189
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Slightly leaking radiator; possible easy fix or simply replace??
I have a slightly leaking radiator, about 4-5 tablespoons of coolant at a time. Wasn't sure if anyone recommends trying a stop-leak radiator solution on our cars or not: I'd assume "no" unless a few chime in with positive results....anyone????
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Porsche Club Racing National Scrutineer '89 Andial 951 '82 928R '74 911 RSR 3.6 |
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11-25-2010, 06:33 PM
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Registered User
Join Date: Nov 2010
Location: Chesapeake, Virginia
Posts: 25
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Hey dude, I'd just replace it if I were you. No need in putting a band aid over a gunshot wound if you know what I mean.
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Aerodynamics are for people who can't build engines. -Enzo Ferrari. |
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11-25-2010, 06:41 PM
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Registered
Join Date: Sep 2008
Location: Atlanta area
Posts: 445
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Whatever "additives" you put in your radiator will also travel throughout the cooling system. Is that a good idea?
Fix the problem IMO
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Bruce P. 2011 Cayman Base, LSD, Sport Chrono. 1988 951 totaled and missed  "You're the best I ever had" --JJ Cale |
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11-25-2010, 07:14 PM
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Proprietoristicly Refined
Join Date: Jul 2001
Location: ~Carefree Highway~
Posts: 5,833
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The best thing to do is to get/rent/deposit a coolant pressure tester at AutoZone or similiar. Put 10-12#s of pressure in the system and isolate the leak.
Radiators usually will show leaks at the plastic to metal seam. You might get lucky and could press the tabs tighter along the seam. The next place the radiator will leak is the coolant overflow nipple on top. It gets brittle or the gasket is bad. Cheap fix. Careful---do not overtighten. The radiator fan switch gasket fails---same info as above. Never any stop leak products--never. GL John
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1988 924S, 85,750K ..+ 1987 924S, 154K DD (+15K est. bad odo) |
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11-25-2010, 07:41 PM
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Don't fool around trying to repair it ,did happen to me I try it's a lost of time & money, plus it could give up on you rigth in the middle of a traffic jam you can guess the result if it does (towing is expensive ) almost the price of a new rad depending on the distance.And like mention no stop leak ever.Jonh is rigth that where it will give up 95% of the time( check the upper corner) driver side.
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 83-944 show room -sold___New ride 93-968 with SC steering wheel-ROW signal ligths- Susp M030 mods lowered,Porsche VA springs- Adjustable struts - Bilstein inserts - Bilstein sport rear -LSD -riding on Cup 1 wheels 17x8 frt 17x9.5 rear road contact Falken 452/ 225-45 ZR Front 255-40 ZR Rear -- Motor Mods /chip /K&N / mod air boxe just love the handling & power
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11-26-2010, 07:15 AM
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Back from Beyond
Join Date: Nov 2004
Location: Alberta, Canada
Posts: 2,697
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New rad. Your car will thank you.
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'88 944 Auto - project, kinda '87 944 Auto - died saving my wife '84 944 5SP - crushed under shop roof during snow storm All others GONE! |
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11-26-2010, 08:23 AM
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Ernie and Slam are correct. Plastic side tanks are hard to repair and susceptible to break/leak again.
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1984 - 944 Black / Wilwood/Brembo brakes / fresh M-474 suspension / Welt 250 lb fronts / 28 mm solid T-bars / M030 bars w Racer's Edge hardware/MSDS headers |
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11-26-2010, 01:11 PM
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Registered
Join Date: Jan 2007
Posts: 2,370
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I had a leak at one of the plastic side tanks and put the stop leak stuff in there. It lasted for like 2 weeks and had to replace the radiator anyway.
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11-26-2010, 03:36 PM
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944 "old faithful"
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