80 Series LSPV Delete?

[DomOfTheDead]

I need to do this on my '96 80 and on Brandi's early 80 too.

Seems like there are a few different opinions on how this can be accomplished, with the easiest being a bracket to move the rod geometry up and this would be simple to fab up. Am I wrong on this?

I understand the factor of the LSPV might not be functioning correctly to begin with, and I would love to increase stopping ability before our upcoming Moab trip, but I don't want to begin a project that needs some major dialing in on a critical system right before we leave.

 

[DaveInDenver]

Attached 1993 Pickup and 1994 Land Cruiser sections on this. I'm starting to wonder if the mini truck LSPV worked the same because it's referred to with the same terms, Load Sensing Proportioning and Bypass Valve, and it does have the same two lines and 3-way valve in front.

I'm still of the mind that on a leaf spring truck this system is workable but on coil sprung trucks with longer springs, more travel, it perhaps could end up being a source of frustration.

I also forgot to mention there's a bleed screw on the LSPV, don't ignore doing it, too. The order in the FSM is the four wheels and LPS & BV last.

 

[IoN6]

IMO, you need more than to just replace the LSPV with a T. There is a line that runs from the LSPV to a T under the master cylinder on the 80's, that is presumably for the pressure diversion to the front. Need to change the oil in the Tacoma this weekend, will see if it is setup the same way.

 

[devo]

With all this talk of deleting the LSPV I’d love to see a write up on how to do it and what parts are needed. When I look up the DIY on it most of them include the ABS delete.

 

[Inukshuk]

IMO, you need more than to just replace the LSPV with a T. There is a line that runs from the LSPV to a T under the master cylinder on the 80's, that is presumably for the pressure diversion to the front. Need to change the oil in the Tacoma this weekend, will see if it is setup the same way.

With all this talk of deleting the LSPV I’d love to see a write up on how to do it and what parts are needed. When I look up the DIY on it most of them include the ABS delete.

Plenty of MUD writeups.

 

[KC Masterpiece]

@DomOfTheDead I just have a bracket for mine. Its a 2 minute install. The dobinsons bracket could probably be replaced with some hardware store bracket. Its not load bearing. I noticed improved breaking after the install. Adjustment is easy. Mine was custom form fitted to the axle by the rear sway bar. I should have cut it before install but now its a "perfect fit"

 

[Notyourmomslx450]

With all this talk of deleting the LSPV I’d love to see a write up on how to do it and what parts are needed. When I look up the DIY on it most of them include the ABS delete.

Yet another LSPV/ABS delete how to...

I finally had some time to get to this today. Figured I would take some pictures and do a write up. There is plenty of info here, but it is a bit scattered. This will go from the start to the end. Is it worth it? Absolutely! For all those that complain about the brakes, we have plenty of...

forum.ih8mud.com

 

[devo]

Thanks
I’ve gone through a bunch of DIY videos and they have been helpful. I don’t want to delete my ABS.

 

[White Stripe]

My lspv was shot. I can't see them lasting a real long time before getting too gummed up. Maybe 10 years/150k. I replaced mine and carefully adjusted the bias. It has a riser bracket for the suspension lift. I also installed hydroboost. It stops extremely well.

 

[Telly]

Following up on this. I had a heck of a time finding a M10x1.0 3/16" flared end plug. Bell Metric has a new batch arriving sometime next week. I'll be ordering a couple to meet the minimum $5 order if case someone wants one.

Brake Plug M10X1.0 Double / Bubble Flare High Pressure Suitable

This M10X1.0 plug is manufactured, giving you a real metric fastener sized to spec. Ships fast from BelMetric's U.S. warehouse of metric-only hardware.

belmetric.com

Be sure to select the 'double inverted' option and put your email on the notification list.

 

[DomOfTheDead]

Thanks to for the inspiration @KC Masterpiece For a short term, low budget solution, I made my own version of the dobinson lspv bracket out of flat stock. Fabbed a 2 in on center version for the wife's truck and a 2.5in for my truck. With leaving for moab a day away, this seemed like the simplest answer to return to (somewhat) factory geometry of the linkage that would also be easily removed if problematic.