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General Information => General => Topic started by: SR Heer on October 28, 2016, 01:44:10 pm

Title: thinking of buying AAZ swapped - 88 Cabriolet - but may have low oil pressure
Post by: SR Heer on October 28, 2016, 01:44:10 pm
I am tempted to buy an 88 Cabriolet that has had a rebuilt AAZ swapped motor 30,000 miles ago - was rebuilt with new oversize pistons and rings as well as with new stock main and rod bearings - I asked him if he had replace the intermediate shaft bearings and he did not remember so I am thinking maybe he didn't  but motor does not burn or use oil - He says oil pressure at idle it shows 1 bar or 14.5 psi and then increases with RPMs.

Is 1 bar at idle low or getting to the point of being a concern?

What pressure is at the acceptable for low end readings at idle?

Is there a way a person can tell if the intermediate shaft bearings are getting close to being overly worn without taking the motor or timing belt apart?

Title: Re: thinking of buying AAZ swapped - 88 Cabriolet - but may have low oil pressure
Post by: RabbitJockey on October 28, 2016, 02:52:22 pm
i think 1 bar is ok
Title: Re: thinking of buying AAZ swapped - 88 Cabriolet - but may have low oil pressure
Post by: libbydiesel on October 28, 2016, 07:35:04 pm
1 bar hot idle is, if anything, high oil pressure.  1 psi hot idle is low oil pressure.  Maybe there is an issue with units?
Title: Re: thinking of buying AAZ swapped - 88 Cabriolet - but may have low oil pressure
Post by: SR Heer on October 28, 2016, 08:28:43 pm
He said like 1 bar or 14.5psi - so that sounds about right - because when its up and running it should be around 30-40 psi - correct?
Title: Re: thinking of buying AAZ swapped - 88 Cabriolet - but may have low oil pressure
Post by: air-cooled or diesel on October 29, 2016, 10:47:44 am
this reading is @idle, hot, @head. your very healthy, 1psi isnt low, about 7psi is getting very low, and can get dangerous, although this reading is reflecting the wellness of lower end, unless you have a serious problem at head.