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440 Runs Hot.

Chronic mysterious over heating issues... BEWARE of cheap aluminum water pump housing

I am very surprised that no one has noticed the hideous poor casting of the inside of the cheap aftermarket aluminum water pump housings. I ordered one from 440 Source and noticed right away, the very restricted passenger side port, it is even worse inside around the corner/ inaccessible to 440 Sources suggestion to just port it to the correct size. I already had a new Mopar Performance housing in wait for my Hemi, and compared it to the cheap copy... The real Mopar housing is really open inside and the smallest point is the port at the gasket surface, matching the gasket. 440 Sources response was that their water pumps are so awesome it will never make a difference... B.S. The pressure being equal no matter the amount of pressure will favor in volume the path of least resistance, so the vast majority of flow will be given to the drivers side (left bank). Even if the over all flow was enough that it didn't show it was over heating at the sending unit, the right bank will be much hotter the left. Has anyone been scoring right bank cylinders? I was very unimpressed with 440 Sources refusal to refund my money, so I could buy a Mopar Housing, instead I had to dream up a possible future for some over priced ARP headbolts, as it would be store credit only and I had to eat the shipping both ways, for a part that would likely fry any engine, or maybe just half of it. My personal experience was with 440 Source, but beware of any of the lesser housings and inspect the ports, as I noticed at a Mopar event in Minnesota that the PRW is the SAME thing, and have seen others that are shrink rapped to a piece of cardboard so you can't see the ports or feel the heavily restricted internals. I did take pictures of both housings with the gasket laying on them. If people quit buying the afflicted ones, maybe they will correct the problem. Until then... In my opinion, pay more now to the company that designed the part, or you may pay dearly later for buying the cheap copied counterfeit.
 
has2bmopar, thanks for the post. Do you know if this has been tested? I.E. Someone had a 440 source piece and switched to the MP unit and saw a difference?
 
I am not a cooling master but i have tried all the electic fans and so on so now i have gone back to the basics with a fan shroud and the factory fan with a fan clutch now i am using the hayden fan part# 3618 and hayden clutch fan part # 2765 they say its shorter to fit in tight places which i need in my engine bay.
 
Big mike, I seem to be having that same problem.
Hi All,

Seems this has all been covered but I guess I just need to vent. If a part breaks you just bolt a new one on but this long drawn out heating problem diagnosing stuff drives me nuts! I can't seem to get this 440 to cool. It climbs to 245 after about 20 minutes of mixed driving.

64 Polara 440 .40 over, forged flat tops, .509 purple shaft, Stage 5 iron heads

-Stock radiator with New 4 row 22x17 core. (from what I read this may be the problem with too many rows or fins)

-2 10 inch electric fans. They were attached without shroud. Made a full aluminum shroud for them and made little difference.

-Separate trans cooler. No trans fluid through radiator.

-Same with or without thermostat. Just overheats sooner with.

-New 13lb cap. 50-50 mix coolant.

-Timing 8 deg static

-was sucking bottom hose shut when revving. Installed spring but no change.

-Mechanical gauge in top of wp housing so am pretty sure its accurate. Plus boils when I shut it off.

-fans are definitely pulling very hot air through the rad maybe just not enough.

Thinking of going back to the basics with mechanical fan just kinda hard to find a shroud for these cars. Or, possibly an aluminum radiator. Don't mind spending money to fix the problem just don't want to throw money at it.

P.S. What gets me is didn't some cars come stock with no shroud? I guess there's something to be said for stock.
 
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