Scfi Fuel Pump Question

dwfatboy · January 30, 2009

I have a 72 K5 Blazer with the powertrain out of a 98 Suburban with the 5.7. I pulled the fuel tank and the guy who I got the Blazer from did a butcher job on the tank to get the fuel pump and sending unit in the tank. I want to replace the tank and use an inline pump. Most of the pumps I find are running at 80-85 psi. The service book I have says the enging specs at 60-66psi. Would the 80-85 psi be too much for the pressure regulator and return? I am planning on running a stock tank and sending unit with the inline high pressure pump. The tank and pump that are in it now work but I think he must have used 2 tubes of caulk to get it to seal. It just don't feel safe running it the way it is. Any info or suggestions are greatly appreciated. Thanks

Zembonez · January 30, 2009

I have a 72 K5 Blazer with the powertrain out of a 98 Suburban with the 5.7. I pulled the fuel tank and the guy who I got the Blazer from did a butcher job on the tank to get the fuel pump and sending unit in the tank. I want to replace the tank and use an inline pump. Most of the pumps I find are running at 80-85 psi. The service book I have says the enging specs at 60-66psi. Would the 80-85 psi be too much for the pressure regulator and return? I am planning on running a stock tank and sending unit with the inline high pressure pump. The tank and pump that are in it now work but I think he must have used 2 tubes of caulk to get it to seal. It just don't feel safe running it the way it is. Any info or suggestions are greatly appreciated. Thanks

HOLY 952 POSTS, BATMAN!

WTF?

txab · January 30, 2009

I have a 72 K5 Blazer with the powertrain out of a 98 Suburban with the 5.7. I pulled the fuel tank and the guy who I got the Blazer from did a butcher job on the tank to get the fuel pump and sending unit in the tank. I want to replace the tank and use an inline pump. Most of the pumps I find are running at 80-85 psi. The service book I have says the enging specs at 60-66psi. Would the 80-85 psi be too much for the pressure regulator and return? I am planning on running a stock tank and sending unit with the inline high pressure pump. The tank and pump that are in it now work but I think he must have used 2 tubes of caulk to get it to seal. It just don't feel safe running it the way it is. Any info or suggestions are greatly appreciated. Thanks

HOLY 952 POSTS, BATMAN!

WTF?

He's trying to catch up with you, Jim.

Site must have been really messed when he posted......

Zembonez · January 30, 2009

I have a 72 K5 Blazer with the powertrain out of a 98 Suburban with the 5.7. I pulled the fuel tank and the guy who I got the Blazer from did a butcher job on the tank to get the fuel pump and sending unit in the tank. I want to replace the tank and use an inline pump. Most of the pumps I find are running at 80-85 psi. The service book I have says the enging specs at 60-66psi. Would the 80-85 psi be too much for the pressure regulator and return? I am planning on running a stock tank and sending unit with the inline high pressure pump. The tank and pump that are in it now work but I think he must have used 2 tubes of caulk to get it to seal. It just don't feel safe running it the way it is. Any info or suggestions are greatly appreciated. Thanks

HOLY 952 POSTS, BATMAN!

WTF?

He's trying to catch up with you, Jim.

Site must have been really messed when he posted......

I agree... even Brian would not do that.

NICE AVATAR! Welcome to the Clown Club!

alaska511 · January 30, 2009

I have been getting our old friend #500, and I knew we were going to see a million multi posts

2000DV4.8 · January 30, 2009

When I was gone for 4 days, I had 18 pages of new threads to go through. I've been gone for less than 24 hours, and I see 13 new pages. I thought we were all just really talkative today.

ajcain79 · January 30, 2009

whore

ajcain79 · January 30, 2009

welcome

grosss · January 30, 2009

I bow to you 72K5er, a member for less than a few hours and you've already got three wrenches! I've been a member for a year and only have two!! LOL... I do need to try a little harder I guess... Welcome! I hope the mods can fix you up soon, lol... I don't think a serious answer to your question will surface until then.

99silveradoz71 · January 30, 2009

Ok, I need to ice might right index finger after having to click the mouse to clean up all the multiple posts.

TexasAl · January 30, 2009

I have a 72 K5 Blazer with the powertrain out of a 98 Suburban with the 5.7. I pulled the fuel tank and the guy who I got the Blazer from did a butcher job on the tank to get the fuel pump and sending unit in the tank. I want to replace the tank and use an inline pump. Most of the pumps I find are running at 80-85 psi. The service book I have says the enging specs at 60-66psi. Would the 80-85 psi be too much for the pressure regulator and return? I am planning on running a stock tank and sending unit with the inline high pressure pump. The tank and pump that are in it now work but I think he must have used 2 tubes of caulk to get it to seal. It just don't feel safe running it the way it is. Any info or suggestions are greatly appreciated. Thanks

Hello,

The site has been having some problems, and your thread was posted a bunch of times. That's why most people are freaking out. As far as your question. Your regulator should handle it just fine, but I would be more concerned about your fuel lines. You may want to completely replace those with new fuel lines that can handle the 85 psi easily. Any general replacement fuel line will work just fine. If you go with a universal type fuel pump, you may be able to adjust the pressure as well. Good luck, and let us know what you end up doing.

-Al

dwfatboy · January 30, 2009

Thanks for the reply. I don't know what happened. After I hit enter, it took a minute then my screen said "internal server error". I am sorry, I only wanted to post it once. I post in forums all the time and this has never happen before.

norsemanberg · January 30, 2009

Don't worry about it, just take the responses as good natured ribbing. By the way Welcome!

txab · January 30, 2009

I have a 72 K5 Blazer with the powertrain out of a 98 Suburban with the 5.7. I pulled the fuel tank and the guy who I got the Blazer from did a butcher job on the tank to get the fuel pump and sending unit in the tank. I want to replace the tank and use an inline pump. Most of the pumps I find are running at 80-85 psi. The service book I have says the enging specs at 60-66psi. Would the 80-85 psi be too much for the pressure regulator and return? I am planning on running a stock tank and sending unit with the inline high pressure pump. The tank and pump that are in it now work but I think he must have used 2 tubes of caulk to get it to seal. It just don't feel safe running it the way it is. Any info or suggestions are greatly appreciated. Thanks

HOLY 952 POSTS, BATMAN!

WTF?

He's trying to catch up with you, Jim.

Site must have been really messed when he posted......

I agree... even Brian would not do that.

NICE AVATAR! Welcome to the Clown Club!

I'm just trying to honor you. Oh Great Clown Master.

txab · January 30, 2009

Thanks for the reply. I don't know what happened. After I hit enter, it took a minute then my screen said "internal server error". I am sorry, I only wanted to post it once. I post in forums all the time and this has never happen before.

No worries. It happens here sometimes. More than we'd like.