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  #21  
Old 07-23-2021, 02:32 PM
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Walt Walt is offline
 
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Location: Dallas/Ft Worth, TX
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Quote:
Originally Posted by Desert Rat View Post
Walt- It's a shame you weren't here with this great advice when I was deciding which pump to buy...

...Oh wait, you were, and I was like "$1,200 for a fuel pump! Forget that!
I'll go with a more complicated but cheaper option, it's not like its a ton of extra time and effort or anything."
Yea but I saved some money by not putting brakes on the RH side
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Walt Aronow, DFW, TX (52F)

EXP Aircraft Services LLC
Specializing in RV Condition Inspections, Maintenance, Avionics Upgrades
Dynamic Prop Balancing, Pitot-Static Altmeter/Transponder Certification
FAA Certified Repair Station, AP/IA/FCC GROL, EAA Technical Counselor
Authorized Garmin G3X Dealer/Installer
RV7A built 2004, 2000+ hrs, New Titan IO-370, Bendix Mags
Website: ExpAircraft.com, Email: walt@expaircraft.com, Cell: 972-746-5154
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  #22  
Old 09-29-2021, 10:31 AM
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Brdog42 Brdog42 is offline
 
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Location: Cone of Confusion
Posts: 191
Default Weldon part#

Does anyone have a part number for a Weldon pump. Application IO-360 parallel valve. I see the 8120-J Is specified for Minimum Capacity “45 GPH @ 20 PSIG @ 14 VDC” & Full Relief Pressure (No Flow) “40 PSIG MAX @14 VDC“ Appears to be a good fit for our Lycoming. Thank you.
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Tim

RV-6A restoration in progress
KCHD AZ
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  #23  
Old 09-29-2021, 09:04 PM
rmarshall234 rmarshall234 is offline
 
Join Date: Jun 2008
Location: San Diego, CA
Posts: 268
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Quote:
Originally Posted by Brdog42 View Post
Does anyone have a part number for a Weldon pump. Application IO-360 parallel valve. I see the 8120-J Is specified for Minimum Capacity “45 GPH @ 20 PSIG @ 14 VDC” & Full Relief Pressure (No Flow) “40 PSIG MAX @14 VDC“ Appears to be a good fit for our Lycoming. Thank you.

Here you go:

A8163-A

35GPH, 21 PSI, 14V, 5A

I see Spruce has them and they are using the Suffix Bravo now.
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  #24  
Old 09-29-2021, 11:22 PM
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MacCool MacCool is offline
 
Join Date: Aug 2020
Location: central Minnesota
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Quote:
Originally Posted by rmarshall234 View Post
Here you go:

A8163-A

35GPH, 21 PSI, 14V, 5A

I see Spruce has them and they are using the Suffix Bravo now.
I have that pump, just replaced it with a re-built from QAA (little leaking) for $800. Mine is firewall-mounted, which I appreciate. Changing it out was simple, whereas (for me) getting around on the floor and under the panel of an RV is not.
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RV-9A, 2011, bought flying
IO-320D1A
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AFS 5400/3500, G5, 430W, some other stuff
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  #25  
Old 09-30-2021, 06:35 AM
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Walt Walt is offline
 
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Originally Posted by MacCool View Post
I have that pump, just replaced it with a re-built from QAA (little leaking) for $800. Mine is firewall-mounted, which I appreciate. Changing it out was simple, whereas (for me) getting around on the floor and under the panel of an RV is not.
FWF mounting is convenient, but now the pump is exposed to the high under cowl temps which means boiling fuel.
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Walt Aronow, DFW, TX (52F)

EXP Aircraft Services LLC
Specializing in RV Condition Inspections, Maintenance, Avionics Upgrades
Dynamic Prop Balancing, Pitot-Static Altmeter/Transponder Certification
FAA Certified Repair Station, AP/IA/FCC GROL, EAA Technical Counselor
Authorized Garmin G3X Dealer/Installer
RV7A built 2004, 2000+ hrs, New Titan IO-370, Bendix Mags
Website: ExpAircraft.com, Email: walt@expaircraft.com, Cell: 972-746-5154
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  #26  
Old 09-30-2021, 08:49 AM
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Quote:
Originally Posted by Walt View Post
FWF mounting is convenient, but now the pump is exposed to the high under cowl temps which means boiling fuel.
Fortunately, that’s not been an issue.
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RV-9A, 2011, bought flying
IO-320D1A
IFR certified
AFS 5400/3500, G5, 430W, some other stuff
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  #27  
Old 09-30-2021, 10:38 AM
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Brdog42 Brdog42 is offline
 
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Thanks everyone
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RV-6A restoration in progress
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  #28  
Old 09-30-2021, 10:52 AM
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bjdecker bjdecker is offline
 
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Location: Georgetown, TX
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Quote:
Originally Posted by Walt View Post
FWF mounting is convenient, but now the pump is exposed to the high under cowl temps which means boiling fuel.
That sounds bad at first blush...

...but isn't the gascolator located on the firewall? What about the engine-driven fuel pump attached to the <gasp> hot engine? And the carburetor or fuel servo? The fuel distribution spider?
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RV-7 (Flying)
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  #29  
Old 09-30-2021, 11:15 AM
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Walt Walt is offline
 
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Quote:
Originally Posted by bjdecker View Post
That sounds bad at first blush...

...but isn't the gascolator located on the firewall? What about the engine-driven fuel pump attached to the <gasp> hot engine? And the carburetor or fuel servo? The fuel distribution spider?
Exactly, that's why you REALLY want the boost pump in the cool zone to be able to pressurize the system to avoid vapor lock. If fuel is boiling in your backup pump you may not be able to get fuel past it to those other components that are even hotter.

Personally that's why I run the AFP purge valve on my FM150 even though it's technically not needed, I'm able circulate cool fuel through the entire system before I even start which totally eliminates vapor lock issues and improves hot starts.

Every GA airplane I can think of, including Van's, has the boost pump located in the "cool zone".

This is where a deviation from the plans can have dire consequences.
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Walt Aronow, DFW, TX (52F)

EXP Aircraft Services LLC
Specializing in RV Condition Inspections, Maintenance, Avionics Upgrades
Dynamic Prop Balancing, Pitot-Static Altmeter/Transponder Certification
FAA Certified Repair Station, AP/IA/FCC GROL, EAA Technical Counselor
Authorized Garmin G3X Dealer/Installer
RV7A built 2004, 2000+ hrs, New Titan IO-370, Bendix Mags
Website: ExpAircraft.com, Email: walt@expaircraft.com, Cell: 972-746-5154

Last edited by Walt : 09-30-2021 at 11:19 AM.
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  #30  
Old 09-30-2021, 01:15 PM
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Walt Walt is offline
 
Join Date: Aug 2005
Location: Dallas/Ft Worth, TX
Posts: 6,278
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Quote:
Originally Posted by Walt View Post
FWF mounting is convenient, but now the pump is exposed to the high under cowl temps which means boiling fuel.
Quote:
Originally Posted by MacCool View Post
Fortunately, that’s not been an issue.
It probably helps that you live in Minnesota!
Be careful if you go to Dallas or PHX in the summer.
__________________
Walt Aronow, DFW, TX (52F)

EXP Aircraft Services LLC
Specializing in RV Condition Inspections, Maintenance, Avionics Upgrades
Dynamic Prop Balancing, Pitot-Static Altmeter/Transponder Certification
FAA Certified Repair Station, AP/IA/FCC GROL, EAA Technical Counselor
Authorized Garmin G3X Dealer/Installer
RV7A built 2004, 2000+ hrs, New Titan IO-370, Bendix Mags
Website: ExpAircraft.com, Email: walt@expaircraft.com, Cell: 972-746-5154
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