1931 Buick 66s. Oil cooler

[Coupe 31]

Hello.buick forum

recently bought this car in restored condition but im getting engine oil in the radiator mixed with antifreeze

 

can someone tell me best way to disable

the oil cooler w/o removing it so it looks factory original as the restoration is very correct.

 

i understand these oil coolers were problematic from the beginning

 

thanks for your help

 

pic of cooler belowhelp

 

[Janousek]

I've been meaning to do this for 10 years on our 90 series.  You'll just have to unsolder and seperate the systems so they can't ever leak.  I've seen guys bypass them from the bottom oil lines but it doesn't look good.  

I was going to gain access inside to the oil lines and run them together.

 

A good radiator shop would be able to do this if you can talk them into it.  

[southpaw]

 Coupe 31

 

Sorry I can't find any pictures. If you just remove the oil cooler, you will see it only takes a little plumbing to remove the honeycomb heat exchanger and replace it with some 

copper tubing than replace the cover. Looks stock. I had to coat the inside of my cover with JB Weld, had some pin holes. 

Good luck,

Jim

[Mark Shaw]

I agree with Jim.  It is an easy fix and can be done with some copper tubing, a propane torch & solder.

[Coupe 31]

Thanks gentlemen

i will give this a try

with copper tubing and solder i will make a u shaped line and connect

 

can that cooler be disassembled to see why it  has a  leak?

 

[Dave39MD]

Good idea on the internal bypass. Here is a photo of an external by pass. You can't see it standing by the fender and if it was painted I would think it would blend in nicely. Mine was this way when I got it. 

 

Dave

 

 

[Coupe 31]

Thanks Dave

do you know any Early Buick parts dealer that makes this bypass tubing pre made?

 

[Dave39MD]

No I don't but there might be one. You could check with Bob's as a start.

 

https://bobsautomobilia.com/

 

Dave