Previous Thread
Next Thread
Print Thread
Vacuum reservoir or electric pump for big cam? #2734601
01/19/20 06:47 PM
01/19/20 06:47 PM
Joined: Dec 2009
Posts: 20,600
in a cattle trailer down by th...
G
Guitar Jones Offline OP
Paddle faster! I hear banjo music!
Guitar Jones  Offline OP
Paddle faster! I hear banjo music!
G

Joined: Dec 2009
Posts: 20,600
in a cattle trailer down by th...
For those that have used a vacuum reservoir how did it work for you? I'm looking at 8" of idle vacuum in my W200. The reservoirs are cheap, the electric pumps not so much. I think I can convert to hydroboost for about the same amount of money, just a lot more work.


"Follow me the wise man said, but he walked behind"


'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost coming soon!
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
Re: Vacuum reservoir or electric pump for big cam? [Re: Guitar Jones] #2734618
01/19/20 07:23 PM
01/19/20 07:23 PM
Joined: Jan 2003
Posts: 4,707
Moved to N.E. Tennessee
GomangoCuda Offline
master
GomangoCuda  Offline
master

Joined: Jan 2003
Posts: 4,707
Moved to N.E. Tennessee
Don't waste your time on the reservoir. Junkyard should have a bunch of oem vacuum pumps for a lot less than the after market. Changing over to manual brakes works better than either one.


In theory, there is no difference between theory and practice. In practice, there is.
Re: Vacuum reservoir or electric pump for big cam? [Re: Guitar Jones] #2734621
01/19/20 07:29 PM
01/19/20 07:29 PM
Joined: Nov 2005
Posts: 15,118
85086
moparpollack Offline
Lil Herman
moparpollack  Offline
Lil Herman

Joined: Nov 2005
Posts: 15,118
85086
What about hydroboost? eek


56 Plaza 63 D100 step side 67 Coronet, 68 Roadrunner, 69 Super Bees, 69 Coronet 500 convertible, 70 Roadrunner Post, 79 D150 360, and a severe case of Mopar a,d,d
Re: Vacuum reservoir or electric pump for big cam? [Re: GomangoCuda] #2734630
01/19/20 08:23 PM
01/19/20 08:23 PM
Joined: Jan 2003
Posts: 15,193
Omaha Ne
T
TJP Offline
I Live Here
TJP  Offline
I Live Here
T

Joined: Jan 2003
Posts: 15,193
Omaha Ne
Originally Posted by GomangoCuda
Don't waste your time on the reservoir. .


iagree beer

Re: Vacuum reservoir or electric pump for big cam? [Re: moparpollack] #2734637
01/19/20 08:56 PM
01/19/20 08:56 PM
Joined: Dec 2009
Posts: 20,600
in a cattle trailer down by th...
G
Guitar Jones Offline OP
Paddle faster! I hear banjo music!
Guitar Jones  Offline OP
Paddle faster! I hear banjo music!
G

Joined: Dec 2009
Posts: 20,600
in a cattle trailer down by th...
Originally Posted by moparpollack
What about hydroboost? eek

I've already done the conversion on my 92, I might have spent $200-$250 on it but it is a good amount of work and some fabrication. It does however provide for some awesome brakes and is the best option, just more than I want to do right now. Not sure converting to manual brakes (which is what I've always done in the past on cars) is a good idea on a 3/4 ton truck.
So what vehicles could I find an electric vacuum pump on in the junk yard?


"Follow me the wise man said, but he walked behind"


'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost coming soon!
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
Re: Vacuum reservoir or electric pump for big cam? [Re: Guitar Jones] #2734652
01/19/20 09:43 PM
01/19/20 09:43 PM
Joined: Jan 2003
Posts: 1,482
Lake Orion, MI
goldduster318 Offline
pro stock
goldduster318  Offline
pro stock

Joined: Jan 2003
Posts: 1,482
Lake Orion, MI
Hydroboost is probably the best option overall.

If you do a vacuum pump, a 2011-2016 Cruze should be an easy one to find, has a nice isolated bracket that should be easy to retrofit onto a different vehicle. It's located on the driver's side framerail near the bottom. You can grab a check valve, vacuum switch, etc all from the same car that should get you where you need to go.

I believe all of them with the 1.4L Turbo and an automatic have one.

cruzevacuumpump.jpg

'70 Duster 470hp 340/T56 Magnum/8 3/4 3.23 Sure-Grip
Re: Vacuum reservoir or electric pump for big cam? [Re: goldduster318] #2734691
01/19/20 11:25 PM
01/19/20 11:25 PM
Joined: May 2003
Posts: 6,545
Downtown Roebuck Ont
Twostick Offline
Still wishing...
Twostick  Offline
Still wishing...

Joined: May 2003
Posts: 6,545
Downtown Roebuck Ont
I would have thought the hydroboost would be more $$ than that.

A new electric pump on Amazon is similar money and should be a lot less work to install. The salvage yard solution would be the cheapest. Lots of GM cars used those as well as other makes.

Kevin

Re: Vacuum reservoir or electric pump for big cam? [Re: goldduster318] #2734693
01/19/20 11:29 PM
01/19/20 11:29 PM
Joined: Jan 2003
Posts: 4,707
Moved to N.E. Tennessee
GomangoCuda Offline
master
GomangoCuda  Offline
master

Joined: Jan 2003
Posts: 4,707
Moved to N.E. Tennessee
Many GM vehicles that are turbocharged or have auto start/stop have vacuum pumps.

Reasonable price pump
Power Brake Booster Vacuum Pump Assembly 20804130 31317530
Amazon link

Last edited by GomangoCuda; 01/19/20 11:36 PM.

In theory, there is no difference between theory and practice. In practice, there is.
Re: Vacuum reservoir or electric pump for big cam? [Re: GomangoCuda] #2734710
01/20/20 12:45 AM
01/20/20 12:45 AM
Joined: Mar 2003
Posts: 5,193
NEW JERSEY
AARCONV Offline
master
AARCONV  Offline
master

Joined: Mar 2003
Posts: 5,193
NEW JERSEY
Reservoir was fine for me

Re: Vacuum reservoir or electric pump for big cam? [Re: Twostick] #2734715
01/20/20 12:50 AM
01/20/20 12:50 AM
Joined: Dec 2009
Posts: 20,600
in a cattle trailer down by th...
G
Guitar Jones Offline OP
Paddle faster! I hear banjo music!
Guitar Jones  Offline OP
Paddle faster! I hear banjo music!
G

Joined: Dec 2009
Posts: 20,600
in a cattle trailer down by th...
Originally Posted by Twostick
I would have thought the hydroboost would be more $$ than that.

A new electric pump on Amazon is similar money and should be a lot less work to install. The salvage yard solution would be the cheapest. Lots of GM cars used those as well as other makes.

Kevin

It might have been more I didn't keep track but a junkyard booster and seal kit is less than $80. Add in a master cylinder, hoses and fluid and it's not that much. I replaced the P/S pump as well on mine to the 2nd gen style to get the two return nipples but you don't have to, you can just tee into the existing return line.

This installation would most likely need custom hoses though.

Thanks for the info guys. That Amazon pump looks like it would work.


"Follow me the wise man said, but he walked behind"


'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost coming soon!
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
Re: Vacuum reservoir or electric pump for big cam? [Re: Guitar Jones] #2734822
01/20/20 10:55 AM
01/20/20 10:55 AM
Joined: Sep 2003
Posts: 19,237
north of coder
moparx Offline
"Butt Crack Bob"
moparx  Offline
"Butt Crack Bob"

Joined: Sep 2003
Posts: 19,237
north of coder
wouldn't a reservoir help keep the pump from running all the time ?
just wondering.
beer

Re: Vacuum reservoir or electric pump for big cam? [Re: moparx] #2734861
01/20/20 12:22 PM
01/20/20 12:22 PM
Joined: Jan 2003
Posts: 20,642
So Near, Yet So Far
topside Offline
Too Many Posts
topside  Offline
Too Many Posts

Joined: Jan 2003
Posts: 20,642
So Near, Yet So Far
OEMs have been using vacuum pumps since the late '80s.
I use a GM one (from a junkyard) that makes about 5" for a pan-evac system on the race car.
It does make some noise, about like an electric fuel pump but more like a whistle than a buzz.
I use a relay and it's wired into the Run side of my ignition.

Re: Vacuum reservoir or electric pump for big cam? [Re: GomangoCuda] #2735155
01/21/20 03:54 AM
01/21/20 03:54 AM
Joined: Mar 2009
Posts: 2,457
Sydney,Australia
tex013 Offline
top fuel
tex013  Offline
top fuel

Joined: Mar 2009
Posts: 2,457
Sydney,Australia
Originally Posted by GomangoCuda
Don't waste your time on the reservoir. Junkyard should have a bunch of oem vacuum pumps for a lot less than the after market. Changing over to manual brakes works better than either one.


I am with the go manual , i did .
I had tried resovoir and electric pump , pump just never lasted . Granted this was a Comp type pump . I have used the GM type pumps with a pressure switch no resovoir on customer car , it seems to be working ok so far .
I have 4 wheel disc brakes now and they are fine .

Tex


New best ET 10.259@129.65 .
New best MPH 130.32
Finally fitted a solid cam,
stepped it up a bit more
3690lbs through the mufflers
New World block 3780lbs 10.278@130.80 . Wowser 10.253@130.24 footbraking from 1500rpm
Power by Tex's Automotive






Powered by UBB.threads™ PHP Forum Software 7.7.1