PSC pump howling again at higher RPMs

Well shit…… the #12 90* fitting I bought is too big. I need a tighter 90 like the supplied PSC fitting. Will get one ordered. Should be able to complete everything else though.
 
Last edited:
Me pump is installed. Moved reservoir forward on the fender as much as I could. Replaced all of the fittings with aluminum adapters and pushlocks.
Have to order another 90* fitting for the feed line. So won’t be complete until later this week.
 
Between working out of town all week and prepping to sell a house I finally had a few minutes to finish my PSC pump and plumbing. Not much hose there but it should allow enough engine movement.

93A74B48-AFF0-4EB6-97AB-84D60A52DF83.jpeg


14592793-814B-4436-AD73-D51D656B3FC2.jpeg
 
  • Like
Reactions: kincaid.0678, NashvilleTJ and mrblaine
NashvilleTJ said:
Any trouble with disassembly? Does that red require heat?
Click to expand...

I usually get it out without heat on big solid stuff but I'd be nervous to give it that much business in a hose connection.

I don't know the number but I know they have a thread sealer that is red and isn't a thread "locker" like 271. It seems to work in refrigerant systems running pressures in the several hundred psi and and <270F but I have no idea whether it would be suitable for a steering system.
 
JAYNE said:
Feed line is 3/4” 8an connections with push locks. Return lines are all 3/8” 6an push locks as well. Sorry for the less than ideal pictures. Just took them in the parking lot at work under a light pole. It’s currently 37* here and was upper 40s most of the day. It started just fine without screaming but increasing rpm gave me a little screech while pulling up to the light pole.
I don’t really have noise after running for 10 or so min but always in the cold on startup and increasing rpm’s.
I agree with mrblaine on those fittings, those are definitely not helping with flow.

Also I’m an idiot, I didn't move the reservoir closer to the firewall. Looks like it’s in a similar location as yours.
View attachment 391766

View attachment 391767
Click to expand...

Anybody able to shed light on the design intent of return line being so much smaller? I don't remember the factory system being that way but I haven't touched it in a while.
 
Gave up on the PSC pump and went to a Chevy 2500 Vortec (same as a CBR) pump two years ago.
20200927_161040.jpg

No real issues, except possibly a little less displacement than I would like.
Though I need to shorten the reservoir again now that I have a 1.5" MML.
 
Last edited:
  • Like
Reactions: freedom_in_4low
Steel City 06 said:
Gave up on the PSC pump and went to a Chevy 2500 Vortec (same as a CBR) pump two years ago.
View attachment 395980
No real issues, except possibly a little less displacement than I would like.
Though I need to shorten the reservoir again now that I have a 1.5" MML.
Click to expand...

Sadly, there was nothing wrong with our basic bleeding process or the pumps that affected output or longevity. They were made with a slightly different stiffness in the casting that created a harmonic that caused the siren like noises we all ran into. I worked with PSC on several of them and upon receiving them, they would install them on a non inline engine and fire them up. No noise whatsoever. That led to the development of a "steel" body version that we've been using with no noise issues and we've been able to go back to the same ole basic rudimentary bleeding procedures.
 
  • Like
Reactions: Bud125 and Gollywomper
Steel City 06 said:
Made a thread a while ago:
https://wranglertjforum.com/threads/a-less-expensive-cbr-power-steering-pump-option.41085/

Basically buy a pump, drill some holes, chop the top off, and drive away.

A bit of work and not too hard to completely mess it up, but if done right it works well.
Click to expand...
They work reasonably well. I bought a couple and installed them. They are okay. I wouldn't trade one for a high volume PSC pump or their standard volume for that matter. If you don't mind the extra work, they are just fine for the DIY person though. The typical big bore box and 1.5" cylinder is the very upper limit of the volume they supply.
 
  • Like
Reactions: Bud125
mrblaine said:
Sadly, there was nothing wrong with our basic bleeding process or the pumps that affected output or longevity. They were made with a slightly different stiffness in the casting that created a harmonic that caused the siren like noises we all ran into. I worked with PSC on several of them and upon receiving them, they would install them on a non inline engine and fire them up. No noise whatsoever. That led to the development of a "steel" body version that we've been using with no noise issues and we've been able to go back to the same ole basic rudimentary bleeding procedures.
Click to expand...
Interesting... I wonder if that was what my issue was. I'd be tempted to try a PSC pump again if that's the case. Do you have a part number for the new pump?
 
  • Like
Reactions: Bud125
Well. Same noise around 3k rpm. Lol.
No noise with belt removed. Noise stops with a little bit of steering input.
Gonna run it. Seems I read so thing about some harmonics with PSC pumps. Who knows. I will see what they say tomorrow. Not gonna swap another one out though. They seem to work fine other than the noise on my engine.
 

Attachments

  • IMG_0419.MOV
    25.3 MB
mrblaine said:
Sadly, there was nothing wrong with our basic bleeding process or the pumps that affected output or longevity. They were made with a slightly different stiffness in the casting that created a harmonic that caused the siren like noises we all ran into. I worked with PSC on several of them and upon receiving them, they would install them on a non inline engine and fire them up. No noise whatsoever. That led to the development of a "steel" body version that we've been using with no noise issues and we've been able to go back to the same ole basic rudimentary bleeding procedures.
Click to expand...

Any info on these pumps or who to talk to at PSC?
 
Top Bottom
Back