740 Head gasket

  • Thread starter Thread starter Andy Mann
  • Start date Start date
A

Andy Mann

Apologise for one last question on this subject.
The car is going in Monday to have the head gasket replaced.
I have a problem with the cooling system reaching a high pressure so have
slacked back the rec cap.
I want to use the car for one last journey this Saturday but it involves
about 200 miles driving round trip.
If I do the trip with no cap on the res what will be the result / problem.
I don't want to put the cap on slack in case it comes of but if that is the
best option then that is what I will have to do.
I don't have a problem in taking the car I just don't want the cooling
system to get over pressured and blow the rad or a hose.
 
Apologise for one last question on this subject.
The car is going in Monday to have the head gasket replaced.
I have a problem with the cooling system reaching a high pressure so have
slacked back the rec cap.
I want to use the car for one last journey this Saturday but it involves
about 200 miles driving round trip.
If I do the trip with no cap on the res what will be the result / problem.
I don't want to put the cap on slack in case it comes of but if that is the
best option then that is what I will have to do.
I don't have a problem in taking the car I just don't want the cooling
system to get over pressured and blow the rad or a hose.
Click to expand...
A few years ago, my head gasket failed, and it blew a heater hose,
leaving me stranded, so you are wise to do this.

If it was me, I'd loosen the cap just enough to relieve the pressure,
half a turn from tight, maybe. If you are worried that the cap may
drop off, perhaps tape it on.

Try and keep the speed down to maybe 50-55 mph, and stop every hour to
check the water level, as you are likely to lose some.
--

TSH


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