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#526 | |
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Join Date: Aug 2013
Location: Central Coast, CA
Posts: 774
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Re: Attempting my first build 72 K5
Quote:
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My Build Thread 72 K5 http://67-72chevytrucks.com/vboard/s...d.php?t=628612 Build version 2.0: 72 K5 6.0 LQ9, 4L80e, NP205 http://67-72chevytrucks.com/vboard/s...d.php?t=793192 ____________________________________________ 1972 CST K5 Blazer Dark Olive |
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#527 | |
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Join Date: Jun 2016
Location: Cornelius, NC
Posts: 167
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Re: Attempting my first build 72 K5
Quote:
I used the PowerMaster, and I know it said not to crank for more than 30 or so seconds at a time or it could damage the solenoid. Any chance you burned that up? |
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#528 |
Registered User
Join Date: Mar 2007
Location: Oakland, Ca
Posts: 1,382
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Re: Attempting my first build 72 K5
you know Mike it might be worth the $75 or whatever to get a regular starter from Orielly just to see if it takes less shims.
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#529 | |
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Join Date: Aug 2013
Location: Central Coast, CA
Posts: 774
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Re: Attempting my first build 72 K5
Quote:
I took a couple days off to clear the mind and I swear that helps when you go back to working on these darn ol trucks. Turns out my battery was starting to lose juice.. I tested it and it was only pulling 10 Volts... Plugged it into a charger last night and will get back after it today. It makes sense because the starter was cranking and disengaging from the flywheel with no problems when I first installed it without using shims.. The only thing about a stock starter is that I have a higher comp motor and from what I've read I'll end up burning a stock starter out really quick
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My Build Thread 72 K5 http://67-72chevytrucks.com/vboard/s...d.php?t=628612 Build version 2.0: 72 K5 6.0 LQ9, 4L80e, NP205 http://67-72chevytrucks.com/vboard/s...d.php?t=793192 ____________________________________________ 1972 CST K5 Blazer Dark Olive |
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#530 |
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Join Date: Aug 2013
Location: Central Coast, CA
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Re: Attempting my first build 72 K5
Starter theories can be kicked to the curb now.. She cranks over and disengages from the flywheel.. It was def the battery. Now, I can get back to figuring out if it's my fuel pump or if something is going on in gas tank
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My Build Thread 72 K5 http://67-72chevytrucks.com/vboard/s...d.php?t=628612 Build version 2.0: 72 K5 6.0 LQ9, 4L80e, NP205 http://67-72chevytrucks.com/vboard/s...d.php?t=793192 ____________________________________________ 1972 CST K5 Blazer Dark Olive |
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#531 |
Proprietor of Dale's Corner
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Location: Vacaville , CA
Posts: 16,101
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Re: Attempting my first build 72 K5
It's gonna take a while to fill the fuel line. It will fill faster if you fill the carb bowl and it ran even short intervals (I would not use starting fluid ). I have also been replacing all my old school 3510 high torque starters with the newer gear reduction type.
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"Some Days Chickens And Some Days Feathers" Dale XNGH ECV Sam Brannan 1004 R.I.P. 67ChevyRedneck R.I.P. Grumpy Old Man |
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#532 |
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Join Date: Jun 2016
Location: Cornelius, NC
Posts: 167
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Re: Attempting my first build 72 K5
I'm a fan of SeventyOnes idea - put the fuel line from a gas can to the mechanical pump with a short hose. Eliminate tank issues at least and isolate it to see if you have engine issues first.
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#533 |
Carpe manana
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Location: Eau Claire, WI
Posts: 12,379
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Re: Attempting my first build 72 K5
Prime the pump so to speak with starter fluid and fire it up?
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1972 K5 CST Highlander Blazer: http://67-72chevytrucks.com/vboard/s...d.php?t=708547 1972 K20 Cheyenne Super: http://67-72chevytrucks.com/vboard/s...d.php?t=528308 ![]() |
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#534 |
Proprietor of Dale's Corner
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Re: Attempting my first build 72 K5
I prefer to use carb cleaner (berrymans) over starting fluid because it doesn't raise the compression ratio. You don't want to pop a head gasket starting it.
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"Some Days Chickens And Some Days Feathers" Dale XNGH ECV Sam Brannan 1004 R.I.P. 67ChevyRedneck R.I.P. Grumpy Old Man |
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#535 |
Proprietor of Dale's Corner
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Location: Vacaville , CA
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Re: Attempting my first build 72 K5
I prefer to use carb cleaner (berrymans) over starting fluid because it doesn't raise the compression ratio. You don't want to pop a head gasket starting it.
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"Some Days Chickens And Some Days Feathers" Dale XNGH ECV Sam Brannan 1004 R.I.P. 67ChevyRedneck R.I.P. Grumpy Old Man |
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#536 |
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Join Date: Mar 2007
Location: Oakland, Ca
Posts: 1,382
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Re: Attempting my first build 72 K5
Everyone's rooting for you, Mike!
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#537 | |
Carpe manana
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Location: Eau Claire, WI
Posts: 12,379
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Re: Attempting my first build 72 K5
Quote:
Mike it's going to work itself out and you'll be the envy of the west coast in short order I'm sure with that driving work of art. I spent the past week in Santa Barbara and thought of you and your build.
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1972 K5 CST Highlander Blazer: http://67-72chevytrucks.com/vboard/s...d.php?t=708547 1972 K20 Cheyenne Super: http://67-72chevytrucks.com/vboard/s...d.php?t=528308 ![]() |
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#538 | |
Proprietor of Dale's Corner
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Re: Attempting my first build 72 K5
Quote:
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"Some Days Chickens And Some Days Feathers" Dale XNGH ECV Sam Brannan 1004 R.I.P. 67ChevyRedneck R.I.P. Grumpy Old Man |
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#539 |
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Join Date: Aug 2013
Location: Central Coast, CA
Posts: 774
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Re: Attempting my first build 72 K5
Thanks all for the support. I appreciate it the suggestions and everything.
So here's the latest.. Good news - I know what the problem is.. Bad News - In order for me to run mechanical pump I would have to change camshafts.. I removed the fuel pump and pressed the pushrod up against the cam and held it with pressure using my thumb while a buddy cranked the motor over for about 20 seconds.. There was NO pressure.. I called Motor Works, gave them my build number and told them what was happening. The cam that was built for my motor does not have fuel pump eccentric lobe so it will only work with an electric fuel pump.. Problem is.. I ordered this thing 3 years ago and even worst, I went through a middle man (west coast engines). When the order was placed it was originally for e-pump. I called Brady (west Coast Engines) and told him I wanted to run a M-Pump and he said no problem.. He must have not communicated that back to motor works.. I don't have this in writing (email) bc I called him on the phone to let him know I wanted to run a m-pump.. I have two options. 1. Use an electric pump 2. Put in a new CAM. First one sounds like the easiest and quickest solution. However, bc I have pre-bent SS lines, I will have to remove this and create a custom line myself and place the e-pump somewhere down along the frame rail.. The second option only sounds enticing bc I would opt for a bigger lift and duration.. Might as well right since you're going to swap cams.. Decisions decisions decisions... I could run an e-pump for now just so I can get this on the road much sooner. and if I really don't like it I could change out the cam some time down the road.. seems like a lot of work though
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My Build Thread 72 K5 http://67-72chevytrucks.com/vboard/s...d.php?t=628612 Build version 2.0: 72 K5 6.0 LQ9, 4L80e, NP205 http://67-72chevytrucks.com/vboard/s...d.php?t=793192 ____________________________________________ 1972 CST K5 Blazer Dark Olive |
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#540 |
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Join Date: Mar 2007
Location: Oakland, Ca
Posts: 1,382
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Re: Attempting my first build 72 K5
craaaap. Man i used the same engine builder and middle man as you!
I wonder about my cam and ability to use a mech fuel pump! |
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#541 | |
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Join Date: Aug 2013
Location: Central Coast, CA
Posts: 774
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Re: Attempting my first build 72 K5
Quote:
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My Build Thread 72 K5 http://67-72chevytrucks.com/vboard/s...d.php?t=628612 Build version 2.0: 72 K5 6.0 LQ9, 4L80e, NP205 http://67-72chevytrucks.com/vboard/s...d.php?t=793192 ____________________________________________ 1972 CST K5 Blazer Dark Olive |
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#542 |
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Join Date: Aug 2013
Location: Central Coast, CA
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Re: Attempting my first build 72 K5
After looking into e-pumps, they all say to mount below and close to tank as possible.. Umm okay, I guess I'll just slap this pump onto the axle since this seems to be the only spot that's below tank
![]() I thought I could just have it sit inside the frame rail, but that only gets me halfway to the bottom of the tank.. other options, I could drop 400-500 on a self priming e-pump, but I'm not really feeling that idea.
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My Build Thread 72 K5 http://67-72chevytrucks.com/vboard/s...d.php?t=628612 Build version 2.0: 72 K5 6.0 LQ9, 4L80e, NP205 http://67-72chevytrucks.com/vboard/s...d.php?t=793192 ____________________________________________ 1972 CST K5 Blazer Dark Olive |
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#543 |
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Join Date: Mar 2007
Location: Oakland, Ca
Posts: 1,382
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Re: Attempting my first build 72 K5
If you go electric fuel pump don't you need a fuel return line to the tank?
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#544 |
Registered User
Join Date: Aug 2013
Location: Central Coast, CA
Posts: 774
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Re: Attempting my first build 72 K5
I was just thinking about that.. Have you been able to confirm? If that is true, doing a cam swap is starting to look more appealing
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My Build Thread 72 K5 http://67-72chevytrucks.com/vboard/s...d.php?t=628612 Build version 2.0: 72 K5 6.0 LQ9, 4L80e, NP205 http://67-72chevytrucks.com/vboard/s...d.php?t=793192 ____________________________________________ 1972 CST K5 Blazer Dark Olive |
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#545 |
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Join Date: Aug 2013
Location: Central Coast, CA
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Re: Attempting my first build 72 K5
Looked into a few discussions on the good ol interweb... seems the consensus leans towards not needed a return fuel line, I think from what i read, if you have a regulator it's keep the fuel cooler which is what the return line in theory is supposed to do.
Regarding my previous note about it being mounted below fuel tank.. I called Summits tech line and the guy helped me find a pump that is self priming (pull/push) so it's ok to mount above tank. https://www.summitracing.com/parts/sww-82091 None of the pumps listed online have no description if its self priming or not.. I think they refer to it as a "lift"
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My Build Thread 72 K5 http://67-72chevytrucks.com/vboard/s...d.php?t=628612 Build version 2.0: 72 K5 6.0 LQ9, 4L80e, NP205 http://67-72chevytrucks.com/vboard/s...d.php?t=793192 ____________________________________________ 1972 CST K5 Blazer Dark Olive |
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#546 |
Registered User
Join Date: Mar 2007
Location: Oakland, Ca
Posts: 1,382
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Re: Attempting my first build 72 K5
I wonder if you can get creative with the mounting and not have to modify the SS fuel lines you already have in place.
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#547 | |
Registered User
Join Date: Aug 2013
Location: Central Coast, CA
Posts: 774
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Re: Attempting my first build 72 K5
Quote:
In-between the main fuel line inside the rail of the frame and fuel tank, there is a spot I could mount it.. This would put it as close to the gas tank as possible. I'm already preparing for Murphy's law, the fuel pump has to be mounted perfectly vertical and I would bet this pump is going to be too tall to place inside the channel of the frame. Today, I'm going to pull the gas tank and start piecing together how I'll route everything. I'll probably end up having to fab up a u-shaped bracket that extends out just pass the frame rail so the fuel pump is able to be mounted vertically without any obstruction. If I didn't want to go through all that work, I could mount it on the outside of the frame, but that's just going to look off and probably could get damaged.
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My Build Thread 72 K5 http://67-72chevytrucks.com/vboard/s...d.php?t=628612 Build version 2.0: 72 K5 6.0 LQ9, 4L80e, NP205 http://67-72chevytrucks.com/vboard/s...d.php?t=793192 ____________________________________________ 1972 CST K5 Blazer Dark Olive |
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#548 |
Registered User
Join Date: Mar 2007
Location: Oakland, Ca
Posts: 1,382
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Re: Attempting my first build 72 K5
thats basically the spot i had in mind - good luck with it!
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#549 |
Registered User
Join Date: Aug 2013
Location: Central Coast, CA
Posts: 774
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Re: Attempting my first build 72 K5
Here's the solution I came up with for the e-pump. Picked up a bracket from OSH with a a 90 degree bend and cut it down to 4" in width.
I really didn't have a whole lot of options for the pumps mounting location. I found this area right in front of the bracket coming of the frame for the brake hose. Drilled 5/16 hole here.I'm only using one bolt (5/16) to hold the bracket in place. It feels like it will hold up fine. Had some left over braided hoses, so for the fuel coming into the pump from the tank I made up this line. I like the idea of using this style. If I ever need to remove the tank of pump, I can easily access the tube nut with a wrench from either end.
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My Build Thread 72 K5 http://67-72chevytrucks.com/vboard/s...d.php?t=628612 Build version 2.0: 72 K5 6.0 LQ9, 4L80e, NP205 http://67-72chevytrucks.com/vboard/s...d.php?t=793192 ____________________________________________ 1972 CST K5 Blazer Dark Olive |
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#550 |
Registered User
Join Date: Aug 2013
Location: Central Coast, CA
Posts: 774
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Re: Attempting my first build 72 K5
Here's the pump with everything hooked up.
Installed a new power master starter. This thing saves a lot of room and makes for a nice clear path for the battery cable.. With the stock starter and headers the cable gets way to close. I'm running a manually operated switch, however, whenever I connect the battery the fuel pump is drawing power and starts pumping. There's the one main positive wire coming off the pump and a ground wire. I'm using butt connector for two power wires.. 1 goes to the battery and the other one goes to the switch. I also have another wire coming off the battery terminal to the switch. That's how I was told to wire it up so I can manually turn on/off the pump. I'll have to do some more research on this and come back to it.
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My Build Thread 72 K5 http://67-72chevytrucks.com/vboard/s...d.php?t=628612 Build version 2.0: 72 K5 6.0 LQ9, 4L80e, NP205 http://67-72chevytrucks.com/vboard/s...d.php?t=793192 ____________________________________________ 1972 CST K5 Blazer Dark Olive |
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