mechanix91

So I just did a head gasket on my 89 4 runner with the 22re and I'm wondering which vacuum line are really nessecary and what I can eliminate I'm not worried about smog it's an off road toy

Rerunn

Do an egr delete and it will take care of the majority of them

MaK92-4RnR

I capped off two of my vacuum lines that are used for vacuum assistance on the power steering pump. with 35s and 37s, I didn't notice a change in "ease" of turning without it.

mechanix91

Thanks is there an egr delete kit out there or do you just make some plates to block it off and how will that effect the computer with efi

Rerunn

You can buy a block off kit or make your own. I bought mine from lce. Deleting the egr will not affect efi

MaK92-4RnR

^^^ what he said. they're basically just plates. or you can buy an offroad header. that'll delete it.

mechanix91

Alright thanks

scope103

A little knowledge is a dangerous thing ....

There is NO vacuum assistance to steering. Those two lines are for the power-steering idle-up; when you push the steering to the stops it raises the idle. This way, you can parallel park without killing the engine. They have nothing to do with "ease."

ALL of the vacuum lines are necessary if you want your truck to run correctly. You can get away with removing almost all of them, as long as you're a big fan of the engine dying, running rough, and using lots of fuel. At a minimum, you ought to educate yourself on the purpose of the line before messing with it.

Terrys87

iTrader: (1)

There is a thread somewhere on elminating the hoses. I tried it and it was nothing but a headache. Seemed like it was always something acting up. On a 22re, it took me some time but I got the vacuum lines figured out and it is nearly second nature as to where they go. Once you learn where they go, things seem to work way better.

The only time I have seen a better improvement on getting rid of the vac lines is on a 22r with a Webber carburator.

MaK92-4RnR

And i'll provide a fact to your so-called "knowledge" since a theory or hypothesis can only take you so far. I've capped mine off and haven't stalled the engine out yet. If you're stalling out while trying to parallel park, you have more problems than just capping the power steering air control valve.

Cap it off and prove me wrong. turning 35s on a SAS front while full lock hasn't stalled out my truck yet.

Go ahead and research Stephen's thread on here. He capped his off on a 3rz Tacoma and wheels the piss out of his rig. His screen name is Scuba

scope103

Dang! Ya got me; when I said there is no vacuum assist to your steering, that was only a "hypothesis." Of course, it's a "hypothesis" that's shared by the engineers who built your truck http://personal.utulsa.edu/~nathan-b...11powerste.pdf , but wadda-the-hell do they know?

It's an idle-up, not magic. If your idle is set too high to begin with, then that's not your problem. Or if you've figured out you always have to give it a little gas when turning tightly, yeah, that will get you by as well.

The real question is: why would one bother? It's sure not going to increase the power output by 10 horsepower (or anything all), and I can't imagine that removing 15 grams of vacuum hose is going to make my front end light enough to do wheelies.

But if you're happy with your modifications, I say: knock yourself out!

warpigg

it cleans up the engine bay alot and it leaves less lines to trace later on. lets say like if you do the head gasket and you have to disconnect alot of stuff it makes it so much easier. i run a total of like 3 vacuum lines on my celica and it runs fine i do have a vac advance distributer and no power steering pump so that makes a difference in the amount of lines.

the171

I'm running with nothing connected to the manifold other than the fuel pressure reg & brake booster. A total of 2 vacuum lines.


EGR, PAIR, both in the trash. PCV and charcoal canister are vented to the sky. Power steering, looped. Running rough, using fuel, engine dying... uhhh no. Running great is more like it, with a manifold that stays clean.

wyoming9

iTrader: (1)

Some people are unable to figure out the vacuum lines so they have huge leaks. Put them on wrong .Unable to afford to replace them

So much better to not have them at all I can understand sort of.

As I see so many who feel work clamps are a unneeded part of the welding process so I guess it is the same mind set

If you don`t understand them remove them The weight saving alone has to be Infinitesimal

There is next to nothing in the 22R series engine bays as it is.

scope103

If only we could say the same about your (and your neighbors') lungs.