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12-31-2018, 10:01 AM
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#1 |
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Registered User
Join Date: Dec 2002
Location: Cactus Patch So. Az
Posts: 4,749
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Water pump heater connections?
Just changed out the 180* hose on the heater nipples and after adding the hoses for the heater the 3/4 pipe is leaking at the connection with the aluminum pump.
What is the correction for this, besides changing out the water pump? Is this just pressed in, if I remove the nipple what is the replacement besides a AN hose and threading the pump?
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53 TuTone Extended Cab 350 4-Spd 3:08 (SOLD) 53 Chevy Moldy pearl green ZZ-4 4L60E 9" 3:25 55 GMC 1st Black Mll (ZZ4) ZZ6 TKO 600 5 sp 3:73 62 Solidaxle Corvette Roman Red (327 340hp 4spd 3:36) C4 & C5 suspension tube chassis LS 3 4L70E 65 Corvette Coupe 327 350hp 4spd 4:11 78 Black Silverado SWB (350/350) 5.3 & 4L60E 3:42 2000 S-Type 3.0 (wife cruiser) 2003 GMC SCSB 5.3 4L60E 3:42 |
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12-31-2018, 11:55 AM
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#2 |
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Post Whore
  
Join Date: May 2015
Location: Alabama
Posts: 14,579
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Re: Water pump heater connections?
Think I'd just cchange the pump...those are pressed in I believe....you could possibly tap it to npt...I think I saw someone do that before....
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Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver |
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01-08-2019, 02:53 PM
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#3 |
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Registered User
Join Date: Jun 2015
Location: Indanapolis, IN
Posts: 601
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Re: Water pump heater connections?
They are just a press fit. You can tap to npt if you so desire. I did on mine and am using AN fittings.
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01-08-2019, 03:44 PM
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#4 |
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Registered User
Join Date: Dec 2002
Location: Cactus Patch So. Az
Posts: 4,749
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Re: Water pump heater connections?
Thanks, that is what I wanted to hear!
__________________
53 TuTone Extended Cab 350 4-Spd 3:08 (SOLD) 53 Chevy Moldy pearl green ZZ-4 4L60E 9" 3:25 55 GMC 1st Black Mll (ZZ4) ZZ6 TKO 600 5 sp 3:73 62 Solidaxle Corvette Roman Red (327 340hp 4spd 3:36) C4 & C5 suspension tube chassis LS 3 4L70E 65 Corvette Coupe 327 350hp 4spd 4:11 78 Black Silverado SWB (350/350) 5.3 & 4L60E 3:42 2000 S-Type 3.0 (wife cruiser) 2003 GMC SCSB 5.3 4L60E 3:42 |
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01-08-2019, 09:37 PM
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#5 |
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Registered User
Join Date: Jun 2015
Location: nj
Posts: 32
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Re: Water pump heater connections?
I had to pull out the stock fittings and weld 45 degree aluminum fittings to mine so it would clear the hotside on my setup.
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01-09-2019, 07:33 PM
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#6 |
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Registered User
Join Date: Nov 2013
Location: Show Low, Arizona
Posts: 759
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Re: Water pump heater connections?
 I have tried pulling them out and twisting them out with no luck. I got them out by cutting them nearly flush and collapsing the tube with a cold chisel. Once you get a piece of the tube to lay over, you can drive the tube out the back side of the hole. The holes the tubes come out of are oversize to a NPT pilot by about .030-.050". I went ahead an tapped them anyway with a 1/2" and 3/8' NPT tap and ran it all the way to the end of the tap. Because the hole is oversize to the pilot diameter the threads won't be fully formed for the full length, I suspect they may leak. I'll probably put the fittings in with JB weld to backstop against that happening |
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