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southtxpilot 05-24-2021 03:33 PM
New owner/member in Texas
 
Just brought a 1997 Boxster home. Last registered in 2004 and with 34k on the clock. So besides a coolant flush, currently overheating and the water is brown and moldy, oil change, and fresh tires; what else should I be looking at before going a mile in it? I have a 3.4l 996 donor motor that I’m going to rebuild.

986andmx5 05-24-2021 05:57 PM
Congrats on the '97 purchase! Feel free to follow along with my '99 thread- I just purchased it and have been baselining it for the past few months.

https://grassrootsmotorsports.com/forum/grm/new-to-me-986-boxster-1999/182782/page1/

southtxpilot 05-25-2021 07:42 AM
Thanks for the info!

W

BYprodriver 05-25-2021 10:12 AM
Quote:
Originally Posted by southtxpilot (Post 636044)
Just brought a 1997 Boxster home. Last registered in 2004 and with 34k on the clock. So besides a coolant flush, currently overheating and the water is brown and moldy, oil change, and fresh tires; what else should I be looking at before going a mile in it? I have a 3.4l 996 donor motor that I’m going to rebuild.
Welcome to the forum, You should look into LN Engineering for your engine rebuild, especially with a 3.4L M96 .

mtb50 05-25-2021 05:57 PM
Quote:
Originally Posted by southtxpilot (Post 636044)
Just brought a 1997 Boxster home. Last registered in 2004 and with 34k on the clock. So besides a coolant flush, currently overheating and the water is brown and moldy, oil change, and fresh tires; what else should I be looking at before going a mile in it? I have a 3.4l 996 donor motor that I’m going to rebuild.
You mention overheating. It would be a good idea to remove front bumper and clean radiators.

southtxpilot 05-28-2021 03:34 PM
Quote:
Originally Posted by mtb50 (Post 636131)
You mention overheating. It would be a good idea to remove front bumper and clean radiators.
New water pump, thermostat, seals, and belt on order. Obvious signs of antifreeze leak on the bottom of the motor. No water in the oil but coolant was frothy. Gonna check the oil cooler and vacuum test the whole system. Previous owner had a bottle of antifreeze in the trunk. Gonna assume the coolant leak has been ongoing.

How prone to failure is the oil cooler? Internal leaks usually oil to water or water to oil?

911monty 05-28-2021 07:37 PM
Quote:
Originally Posted by southtxpilot (Post 636311)
New water pump, thermostat, seals, and belt on order. Obvious signs of antifreeze leak on the bottom of the motor. No water in the oil but coolant was frothy. Gonna check the oil cooler and vacuum test the whole system. Previous owner had a bottle of antifreeze in the trunk. Gonna assume the coolant leak has been ongoing.

How prone to failure is the oil cooler? Internal leaks usually oil to water or water to oil?
The oil cooler can fail. Oil pressure should be 20-50 psi. Water pressure is 16 to 20 psi.


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