Are all 12 valves equal in the front end?
12-31-2012, 01:26 PM
#1
Are all 12 valves equal in the front end?
Minus timing cover, of course.
The reason I ask is because I am installing a vacuum pump and power steering assembly from a P-pumped engine. I am just wondering if there is any reason why it wouldn't work. The gear on the pump appears to be the exact same, minus the little nipple on the end, and my timing cover has a spot for it to go into. And I also got the oil line plumbed in, as well.
Old assembly
New Assembly
The reason I ask is because I am installing a vacuum pump and power steering assembly from a P-pumped engine. I am just wondering if there is any reason why it wouldn't work. The gear on the pump appears to be the exact same, minus the little nipple on the end, and my timing cover has a spot for it to go into. And I also got the oil line plumbed in, as well.
Old assembly
New Assembly
12-31-2012, 02:02 PM
#3
You think they changed the gears or something after the first year or so of using the Double Diaphragm?
I did mange to get it on the engine, but I haven't started it yet.
I had to put the oil pressure sender elsewhere and cut off the bottom half of the throttle bracket, but it fits. I'm probably just being too overly cautious, but I just want to know if there is a reason why this will grenade my engine or something.
I did mange to get it on the engine, but I haven't started it yet.
I had to put the oil pressure sender elsewhere and cut off the bottom half of the throttle bracket, but it fits. I'm probably just being too overly cautious, but I just want to know if there is a reason why this will grenade my engine or something.
12-31-2012, 03:33 PM
#5
Banned
http://www.fixinrams.com/ Call this guy he's the master on the pump's
12-31-2012, 03:43 PM
#6
I was going to use that port, but couldn't access it very easily. That assembly is really really long.
This is what I ended up doing. I added about two feet of wire onto the sensor.
12-31-2012, 03:48 PM
#7
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I have one from a '94 on my pick-up. It hasn't blown up yet and I swapped it on probably 10k miles ago in the summer. An intercooled throttle bracket with some whittling and rewelding makes it look a lot less hill jack.
Everything will fit in there like it's supposed to. You just gotta be crafty
Everything will fit in there like it's supposed to. You just gotta be crafty
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12-31-2012, 03:54 PM
#8
I have one from a '94 on my pick-up. It hasn't blown up yet and I swapped it on probably 10k miles ago in the summer. An intercooled throttle bracket with some whittling and rewelding makes it look a lot less hill jack.
Everything will fit in there like it's supposed to. You just gotta be crafty
Everything will fit in there like it's supposed to. You just gotta be crafty
For now, my throttle bracket is being held by one bolt up top.
Maybe I'll luck out and find an IC bracket sometime.
BTdubbs, I'm doing this for a hydroboost conversion.
01-01-2013, 12:04 AM
#11
Registered User
Right on! Eager to hear your results. It'd be cool if you create a thread covering the swap including all the necessary parts and tasks involved. I've heard good things from others swapping hydroboosts from Chevy's, IIRC. Any particular year or would any setup from '98.5 to '02 work?
01-01-2013, 12:14 AM
#12
I'll try to do a writeup here once I get everything finished up. For now, I'll post up some pics and basic info for ya. 
I put on a red head steering box during this swap - my old one was really loose. I can already tell this thing is tight as a drum.
I used a 12 valve vacuum pump (the 24v gear on the back is completely different), and mated it to a 24v PS pump (for the dual returns on the back).
As mentioned, I had to relocate the oil pressure sender, attach the oil supply line, and also cut off the bottom half of my throttle bracket to get everything to fit.
In order to get the booster in place, I just had to drill two new holes to the right of the push rod, and enlarge the hole in the rod to 1/2 inch in order to fit on my pedal. It does sit a bit high, however. You can also see the red fuel line I used for the return.
I had to adapt my lines to 12 and 14 mm. They were 1/2" and 9/16" before. I was able to adapt the smaller size down, but I had to cut off the larger one and splice in a smaller end.
If you have all of the hoses from the parts truck, you should be able to just bolt everything in with little other modification other than the brake lines, and maybe putting a tee in the PS return lines if your pump only has one return port.
I put on a red head steering box during this swap - my old one was really loose. I can already tell this thing is tight as a drum.
I used a 12 valve vacuum pump (the 24v gear on the back is completely different), and mated it to a 24v PS pump (for the dual returns on the back).
As mentioned, I had to relocate the oil pressure sender, attach the oil supply line, and also cut off the bottom half of my throttle bracket to get everything to fit.
In order to get the booster in place, I just had to drill two new holes to the right of the push rod, and enlarge the hole in the rod to 1/2 inch in order to fit on my pedal. It does sit a bit high, however. You can also see the red fuel line I used for the return.
I had to adapt my lines to 12 and 14 mm. They were 1/2" and 9/16" before. I was able to adapt the smaller size down, but I had to cut off the larger one and splice in a smaller end.
If you have all of the hoses from the parts truck, you should be able to just bolt everything in with little other modification other than the brake lines, and maybe putting a tee in the PS return lines if your pump only has one return port.
01-01-2013, 02:52 AM
#14
Registered User
