How many has done a lift but have not adjusted the LPSV?

[khoi911]

How many folks have done a lift but have not adjusted their LPSV? I want to do a lift but when looking at my LPSV (a hunk of rust) I get scared as I know I have to deal with it.


And why in the heck do we call it LPSV, when it is a "load sensing proportioning valve?" Should it not be LSPV?

 

[matttaylor1976]

I didnt do mine at first.... Then realized actually stopping is a good thing

 

[TheBigBoy]

Most people just just use the proportioning bracket on the housing and dont touch the actual valve.

 

[brian]

did my lift several months ago and have not adjusted it yet.

 

[Wrench]

*Raises hand*

 

[hawker7]

It takes about 5 minutes. Why not do it?

Sent from my Desire HD using IH8MUD

 

[khoi911]

You don't live on the east coast and thus don't know about rust. It's the DEVIL! 10 mins equals 2 hours. Every time I remove a bolt I have to heat it up with a torch to make sure it does not snap off.

I rather just remove the LPSV but then this means redoing all my hard brake lines. I have been researching the removal of my LPSV but there seems to be no good threads on it. Just folks asking questions but I want to talk to someone who has removed it and what consequences comes afterwards.

It takes about 5 minutes. Why not do it?

Sent from my Desire HD using IH8MUD

 

[Razorbackcruiser]

My first 80 I didn't adjust it (because of rust). My current 80 I did adjust it (no rust) and let me tell you it does make a big difference. The stopping distance was greatly improved.

 

[TheBigBoy]

You don't live on the east coast and thus don't know about rust. It's the DEVIL! 10 mins equals 2 hours. Every time I remove a bolt I have to heat it up with a torch to make sure it does not snap off.

I rather just remove the LPSV but then this means redoing all my hard brake lines. I have been researching the removal of my LPSV but there seems to be no good threads on it. Just folks asking questions but I want to talk to someone who has removed it and what consequences comes afterwards.

Ive done it. I have all the facts and results. Been running it for 3 years now.

Would highly recommend it for lifted trucks running 35's. Stock or close to stock running normalish size wheels. I wouldnt bother.

ANd your exactly right. All the comments are from people who havnt done it.

 

[khoi911]

Thank you for the response. I will be sending you a PM with questions.

Ive done it. I have all the facts and results. Been running it for 3 years now. Would highly recommend it for lifted trucks running 35's. Stock or close to stock running normalish size wheels. I wouldnt bother.

ANd your exactly right. All the comments are from people who havnt done it.

 

[TheBigBoy]

Im happy to answer in this thread if you like. To share the info. How ever I know a few will dissagree with the results. But results are results, and theory is theory.

 

[bhicks]

Dangit!! I hate being the token "green" buy. I was hopeful somebody would ask the stupid question so I didn't have to, but it looks like that's not gonna happen. What is the "LPSV" and why/how is it adjusted?

 

[khoi911]

Read This >> LSPV

Dangit!! I hate being the token "green" buy. I was hopeful somebody would ask the stupid question so I didn't have to, but it looks like that's not gonna happen. What is the "LPSV" and why/how is it adjusted?

 

[khoi911]

I want to remove the factory "load sensing" proportioning valve (LSPV) and replace it with a "manually adjusted" proportioning valve. Is this what you did? Or did you just removed the LSPV all together?

Im happy to answer in this thread if you like. To share the info. How ever I know a few will dissagree with the results. But results are results, and theory is theory.

 

[TheBigBoy]

Mostly here, we dont touch the proportioning valve itself. We just use a tab/bracket to lift it to the correct height on the diff to match the lift height.

Landcruiser 80 Series 4-5" lift Proportioning Valve Bracket, Suspension Stuff

 

[TheBigBoy]

I want to remove the factory "load sensing" proportioning valve (LSPV) and replace it with a "manually adjusted" proportioning valve. Is this what you did? Or did you just removed the LSPV all together?

I wanted to do that exact same thing myself with a manual 1. I decided to remove it all together (as you can see in the pics). Just to see the affects for myself and acting as if the manual valve was in its most open possition. As I hadnt yet purchased the manual valve. Im redoing some tests now as there are some non beleivers . Who may I just add have never done this mod themselves or know anyone who has.

Basically, my truck brakes much flatter. eg, the front doesnt dive down as much. You can enitially feel the front and rears grab at the same time but the front soon takes over due to 4 pistons vs 1 in the rear. The rear does not lock up. Even when I lock up the front completely. It has made it brake much better. Only thismorning, all the cars infront of me stopped still at 80kph. If I didnt have this mod I would have damaged mine and someone elses car. 35" tyres are hard to pull up at any day. I would say almost half the braking distance of before this mod. Where it would roll on and not able to stop propperly.

But again this is with 35 muds and a 5" lift. I wouldnt do this to a stock 1. Towing - no problems and you can really feel the braking difference. Wet roads - Still no problems. Braking times so far while redoing the tests are from 60kph to dead stop = a car and a halfs length. A squek from the front tyres and no rear lock up.

More tests to come and probably some vids aswell. I couldnt even think of going back to that rusty peice of crap now . How ever Im sure someone will jump on and say its illegal in this country. Care factor - 0. Its saved me far more times from a crash than caused 1.

 

[thatcabledude]

I want to remove the factory "load sensing" proportioning valve (LSPV) and replace it with a "manually adjusted" proportioning valve. Is this what you did? Or did you just removed the LSPV all together?

The p.o. of my 80 did exactly that. Wilwood adjustable valve under the hood that can be adjusted to your liking. I didn't drive the truck before this was done, but I will say that it works very well. If you are gonna tow a big load you can adjust accordingly.

 

[jlg32281]

Haven't touched mine and can't tell any difference from pre-lift. I'm on FOR fronts with Ironman rears with 30mm spacer all around. Then again, I don't really try to stop fast with this tank.

 

[primer7]

Never adjusted mine either. OME 2" lift all around.

 

[Kernal]

The p.o. of my 80 did exactly that. Wilwood adjustable valve under the hood that can be adjusted to your liking. I didn't drive the truck before this was done, but I will say that it works very well. If you are gonna tow a big load you can adjust accordingly.

Can you describe how/where the Wilwood unit is hooked up, got a photo?