cleaning radiator

[ironworker40]

What year did they change to dimpled 3 core?

Original radiators were a copper core 4 row with I think 15 fins per inch. Then some engineer felt we could live with a new design called dimple core and have only 3 rows... Big mistake. they do not cool well enough. Never buy a dimple core. Use only steam distilled water and you will never again have the mineral drop out problems that ruin a radiator.

 

[79jasper]

I don't think they came with the 3 core.
He's saying most replacement ones are 3 core.


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[chris142]

The factory one i pulled out of my 87 was a 4r dimpled tube core. Dimples work well to cool the water. But im guessing a 3r just aint enough.i think vans had the 3r