This can't be rocket science, but it does make a certain few a bunch of money, so I could see why they hold the details close.

What does it take to turn a stock TC pump into one of the 4 GPM units that -Mart, PSC(ompletely over-priced) and AGR(eally, REALLY overpriced) all sell?

I've searched and Googled. Found a bit on the Sag P, but not the TC.

Any links to a good write up, or it this still an "Ancient Chinese Secret"?

I searched the gen 4x4 section, and didn't find anything specific to modding the TC. Lots of discussion on comparing it to P pumps and others, even modding the P pump.

Nothing specific, at least in the 4 pages of results, unless something is buried in a thread. I doubted someone would do a write-up and bury it for no one to ever see. But I've seem stranger.

I figured someone would have had a stock TC and a PSC, Trail-gear or similar apart and compared what was done to them. Maybe not. Would be an awesome tech bit if it was.

should be a fairly recent thread in Gen about modding pumps.
I highly doubt you can mod a stock TC pump to match aftermarket ones.

i'm pretty sure the TC is a vane pump. you could increase the volume by using a larger cavity with vanes and rotor to match the new dimensions. both would require a new casting and all new internals. i don't think there is any way to modify volume other than using a smaller pulley to spin the fawker faster.

here's a diagram to help y'all understand how the pump works. i highly recommend studying the US Army's technical manual on hydraulic systems. i have a paper version from some of my training, can't find the electronic version right now.

http://www.timken.ru/ru-ru/products/coatings/engineered/PublishingImages/VanePump.jpg

Let me reiterate.

What I'm actually looking for is a mods (including machining and part replacement/alteration) that the different companies are doing to produce the hi-flo TC. I doubt it's a new specific casting, but rather alterations to new stock casting. But who knows, I might be wrong.

If the are enlarging the casting and replacing the rotory vanes, what are they doing and what are they using?

Again, this might be ancient chinese secret.

using a smaller pulley to spin the fawker faster.

Got that covered.

Its the new casting thing thats got me. I can't see Trail-Mart using a new, non-auto app TC casting to make a $199 pump.

But again, it's Trail-Mart. Look out for falling prices!:laughing:

I havent really picked apart the thread but is this posting not a substitute. It's not a mod just a replacement. Again I have not read the entire thing through so if it is incorrect I apologize.

http://www.pirate4x4.com/forum/showthread.php?t=630765

http://www.pirate4x4.com/forum/showthread.php?t=630765

Yup, read that one before too. It has some mod info, but the info is actually for the Saggy P pump.

Well crist, why not ask them for all their specific specs. Might as well copy the entire pump.
They sell them for a reason.
You ask everyone who makes something exactly how they make it?

other than using a smaller pulley to spin the fawker faster.

gotta watch out, that's how a lot of pumps failed in KOH - spinning too fast, too long.

there is a tread in the toy tech right now about the tc pump swap and it has a link that has all the tec for the tc pump mods.

I thought there was a post about this in the general section......maybe 9-12 months ago???


There was a post in...General maybe???...anyway there was a post from some guy that ran/owned a P.S. rebuild company that was very, very informative on rebuilt pumps and such. I "think" he may have been a new yellow star member on here. It wasn't that long ago though. $hit...my memory's as short as my...

Anyway...off to search.

GM has a "CB" series pump that looks exactly lie a "TC" series pump they use on Luminas (the van) and it looks like some of there larger stuff.

I got out my GM manuals and the internals are slightly different...

OK off to study some more...

There was a post in...General maybe???...anyway there was a post from some guy that ran/owned a P.S. rebuild company that was very, very informative on rebuilt pumps and such. I "think" he may have been a new yellow star member on here.

OK...found it, this is pretty good reading...

http://www.pirate4x4.com/forum/showthread.php?t=708701&highlight=power+steering

This guy may tell you.
Lee MFG.
11661 Pendleton St
Sun Valley, CA , 91352-2502
Phone: 818-768-0371
FAX: 818-768-2687

Thanks all.

The stock rebuilt TC is on, and seems to beworking fine. Set up is the TC, Toy 2WD box, 5" Summit pulley (little smaller than the Toy pulley), cooler and a 1.5"x8" ram.

Should we find the stock TC doesn't cut the mustard everywhere, we'll either tear it down and play with the innerds, or go with a vendor pump.

Both here and in some PM's I got, I was referred to Lee's as a possible source of the coveted mod info. Should I learn the guarded secrets, I'll do a write up, complete with 8"x10" glossy photos with circles and arrows and a paragraph on the back of each explaining what each circle and arrow means.:D

'Till then, its working FAR better than the "modded" Toy pump that was on there.

the guys at west texas off-road, the red neck ram, have a mod for these pumps. they cover them on line. this guy in the toy tech has all the part numbers and the links to the tech.

http://www.pirate4x4.com/forum/showthread.php?t=630765

I havent really picked apart the thread but is this posting not a substitute. It's not a mod just a replacement. Again I have not read the entire thing through so if it is incorrect I apologize.

http://www.pirate4x4.com/forum/showthread.php?t=630765 (http://www.pirate4x4.com/forum/showthread.php?t=630765)

the guys at west texas off-road, the red neck ram, have a mod for these pumps. they cover them on line. this guy in the toy tech has all the part numbers and the links to the tech.

http://www.pirate4x4.com/forum/showthread.php?t=630765 (http://www.pirate4x4.com/forum/showthread.php?t=630765)

Welcome to post #9...:shaking:

Oh yeah...and if you ever get time to pull your head out of your ass...

the guys at west texas off-road, have a mod for these pumps.

It's not the same pump.

opps didn't read his linky thing. my bad. not the same pump? thought you were using a tc pump. didn't know that yours was that much different.

ahh yes thats the saggy pump. my bad.

hey time what year/make/model did you get your t/c pump out off I got mine from a 90's 4cly Cherokee and the out put comes out at and inconvenient angle although i have read you can turn it (after i installed it and routed all the hoses and mounted the reservoir) BTW great topic idea

hey time what year/make/model did you get your t/c pump out off I got mine from a 90's 4cly Cherokee and the out put comes out at and inconvenient angle

1995 Jeep Wrangler Rio Grande (2.5L 4 cyl). Output was on top. Since we reused the Toy hose (both were metric), the metal section was factory bent in a way that it clears the hood fine (w/2" BL) and ran to the box. Only tricky thing there was the fitting style being different. Rather than buy an adapter (being cheap AND not wanting to stop), we took the brass washer thingy from the toy pump, ground down the ridge and dropped in into the TC. This allowed the hose to work as a flare when it bottomed out. I dunno, while not what everyone would do, it works and doesn't leak, so the cat got skinned yet another way.

Input is a 90* elbow, and while not ideal, it works as well. Hose takes a brief turn over the header, which isn't great. I did see some other TC pumps with a straight nipple, which would prolly work better, but don't know if they are tapped metric on the input.

Right now, the pump is maxed out on belt adjustment, and works but will slip when pushed at full lock. We expected that as the pulley was smaller than the Toy, and we were reusing the old belt. Yankee Bob is coming over tonite with the next smaller belt down, and it should be finalized.

hey time what year/make/model did you get your t/c pump out off I got mine from a 90's 4cly Cherokee and the out put comes out at and inconvenient angle although i have read you can turn it


I don't know what Tim used...but there are a few different configurations from NAPA's site...


http://partimages2.genpt.com/partimages/732101.jpg

http://partimages2.genpt.com/partimages/731953.jpg

http://partimages2.genpt.com/partimages/731801.jpg

http://partimages2.genpt.com/partimages/731953.jpg


That's it. Come to thinks 'boutit, we turned the input backwards toward the header, as that was what worked best due to space config and hose length.

Inspiration for this mod came from a Pirate write up, and several cans of Sparks Plus. The orange-flavored 7% malt beverage with enough go-go juice to put your dick in the dirt for hours.



Get your dick dirty today! (http://www.sparks.com/home.jsp) :bounce2:

opps i ment input... so it just turned?

http://pirate4x4.com/tech/billavista/PR-Hydro_Steering/TC%20Pumps%201.jpg

http://pirate4x4.com/tech/billavista/PR-Hydro_Steering/index2.html

opps i ment input... so it just turned?

Yup. Put a deep socket on it with an extension, and it turned easy. It's just pressed in with an O-ring.

The above post has the one with a straight nipple, which in hindsight, would have made it harder to plump the line over the Wrangler one.