Tampa 928s

88 924s
Friends son drove the car for 15-min with temp gauge pegged. Found oil in coolant, then he takes it out again and now he has coolant in the oil. I want to advise him what direction to take, repair the head gasket and
pray, pull the motor check the bearings, of just call it a day and disown his kid!

MAGK944

1. Replace head gasket.
2. Replace oil cooler seals
3. Replace rod bearings
4.Flush engine, change oil again after 500 miles
5. Flush entire cooling system

Lots of WYIT jobs worth doing: Due to overheating get the head checked and skimmed if necessary. Check the oil pick-up tube for signs of fatigue. Replace coolant tank if it is old and yellow, change belts, rollers, wp, foes while its all apart, etc...GL

Tampa 928s

Are the bearings accessible with engine in the car?

thirdgenbird

You have to pull the crossmember off, but yes.

Tampa 928s

This failure just happened what is the rule of thumb for not having to replace the bearings. Car recently had a new valve job and all belts water pump Etc just done.

Arominus

The rule of thumb is directly from the factory shop manual, if you have a mixing incident, you replace the rod bearings. All of the other things you did have zero effect on the life of the bearings, antifreeze in the oil does. Bearings are cheap, its just a little bit of work to get to them.

MAGK944

As said, it's really a factory requirement and not worth the risk, bearings and a sump gasket are cheap and the bearings are probably due anyway. Would you rather take the sump off now or pull the engine and replace the crank and rods in the very near future?

TexasRider

^^^^

Absolutely as stated .

Gawernator

6. Remove child from vehicle

Tampa 928s

I warned my friend what would happen with his kid and this car. I spent a lot of time bringing it back to life after sitting for 10 years, finally got it running right. I stoped working on it after he decided to go with his friends .instead of working with me on the project. The fan circuit was not repaired and the only way it ran was with the air on so his friends played with the controls and ran the car two times in the red after repeated warnings. I am not sure I even want to do this if he takes it somewhere I assume a head gasket at minimum cracked head and bearings at worst what do you think that would cost him?

MAGK944

The majority of the cost is in the labor so if you do it yourself you will save a bunch. Headgasket kit, sump kit, oil cooler housing kit and rod bearings are cheap. Doubt the head is cracked, these are quite tough cylinder heads, just use a shop to check it is straight and if not have them skim it straight. Probably could get that head checked out and acquire all the parts for under $500 and it would take you a day to complete if you are reasonably competent and are prepared first by reading the manual. I expect a shop to charge $2.5k or thereabouts, so save yourself a couple of grand.


...and fix the fans, probably just a relay or the fan switch on the radiator.

HICKS

Your friend sounds like a idiot, why even bother helping? Let him figure all this out, he didn't listen to you before, why would he now?

thirdgenbird

That is a little harsh. These cars are notorious for mixing coolant and oil. It may have contributed to the overheating, not vice versa. The kid made a mistake, we have all done stupid stuff. Hopefully a lesson is learned. You could almost argue that the fan circuit should have been one of the first things fixed. No one is perfect.

I once forgot to torque a bolt properly on a timing belt job and ended up needing a head. Am I an idiot that needs exiled?

Tampa 928s

I am well versed on the 928 this is my 8th one in my garage as we speak. I did all the work on the 924 after sitting for 10 years 43k miles interior is like new except for the dash. Needs paint and a few electrical items to address. I spoke to him today and he has had enough and maybe ready to sell the car. Not sure if I want it depends on what it is worth in this condition.

thirdgenbird

Makg944 is likely spot on. My stupid mistake (rebuilt head) was about a $500 lesson.