'90 Geo Tracker LSI Radiator ? 17.75" or 18.5" ?

[DOCTORBILL]

My 1990 Geo Tracker LSI with Automatic (98,500 miles) is overheating.
I have a 185° Thermostat in it.
When it gets hot out (>90°), the temp needle climbs to just a
mm under the RED. Normally on cool days it runs just left of center on the gauge. I had to drive with the heater on - Fan
On Full to keep it from getting into the red two days ago while
coming home. In traffic - LORD !

I installed a new thermostat Fan Clutch last year.
Just had all the seals replaced - leaked oil badly -
New Water pump New Oil Pump also.

A local mechanic suggested that I put in a new radiator.
I could buy an Electric Fan and install that.....

Not wanting to possibly waste my time trying to flush it out,
I think it might be time to replace it. It is 27 years old !

O'Reilly shows two radiator sizes for the 1990 LSI :


I cannot get a measuring tape under the bottom to measure
the distance between the "Bottom Pin Mounts".

Why would GEO have two different sizes on the 1990 Tracker LSI ?

Is there some other way to find out which one to order ?
The Tracker now has a HARRISON (Original - GM ?) radiator.

DoctorBill

[Crvett69]

check your messages and they are as cheap as $35 with shipping on e-bay. the width and thickness of core should tell you what one to get. best way to reach me is at [email protected]

[DOCTORBILL]

crvett69 has been a great help with this.

LONG story short - my 27 year old radiator is 17.5 mm longer than ANYTHING the parts places advise as replacement parts !
Pages of vehicles that the part is supposed to fit are WRONG ! DEAD WRONG !
My Tracker was assembled in Mexico......is THAT why ?

New Radiator - TOP Old Radiator - BOTTOM



I have to modify the Radiator Mounting Bracket in my 1990 Tracker LSI to make the replacement Radiator fit in.




DoctorBill