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  #16  
Old August 13th, 2017, 21:37
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Ecomike Ecomike is offline
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Re: RENIX heater core flush ... assistance required.

Actually the Renix Radiator inlet and outlet are two different sizes as well. 1.25" inlet, 1.5" outlet. But I am inclined to agree.

Quote:
Originally Posted by lawsoncl View Post
Not sure I buy the fluid dynamics explanation. You don't see that on the radiator or most commercial heat exchangers. I always assumed the size difference was to ensure supply and return didn't get mixed up, which would cause air to get trapped in the core. Fill from the bottom so air gets pushed out the top.

I think he meant you might damage the tube while struggling to force the undersized hose on it.
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  #17  
Old August 14th, 2017, 09:19
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Re: RENIX heater core flush ... assistance required.

Quote:
Originally Posted by Ecomike View Post
Forcing the wrong size hose on an old weak, thin wall copper tube may damage the tube.
This point is now clear to me. Other posts have mentioned as well. I have put a lot of force on that top outlet trying to remove that hose that will stop immediately going forth.

Researching the eBay/Amazon links you provided earlier was very helpful. Comparing with RockAuto yields that they come out as a better source for me here in Canada. Your shipping in the USA for the eBay items is $4, whereas my cost is $20. RockAuto also has a clearance price on the "bastard" hose at only $4/piece.

Therefore, I am going to place my order with RockAuto for the heater hoses. Listed below are the items required. To clarify, this is just for the short hoses coming directly off the heater core. All other existing heater hoses will be reused. For future reference, the item part numbers are as follows;

Top (outlet) hose; 17116.65, Continental 63145
Bottom (inlet) hose; 17116.63, Gates 28466
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  #18  
Old August 14th, 2017, 16:02
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FlyNNN FlyNNN is offline
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Re: RENIX heater core flush ... assistance required.

Quote:
Originally Posted by Ecomike View Post
Good Heat is over rated in south Texas LOL.
Unfortunately, I only need it for 8 months of the year.
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