Emissions and VSV 90925-05046

[Pitter Patter]

I’m confused and need some help. The lower thermostat housing switching valve broke, because 45 year old plastic in a high heat location. This is a NLA part. Found City Racer is repopping these. Dude you rock!

But when I went to the pic I noticed he’s showing it coming out of the top of the thermostat housing, see his pic below. WTH? Mine only has the two VSV, on the lower housing. My equivalent of his purple one is what broke, the blue one is available from Toyota, what is this pink one?

Here’s my setup:

My vacuum hard lines don’t even appear to be the same configuration.

 

[charliemeyer007]

I don't see where yours is broke, Maybe you can use a small piece of metal tubing to fix a broken off port nipple. Heat the tubing and hot rod it into the plastic, glue the other end in a reamed hole. Back in the day pens had metal tubing for the ink - I used it for all kinds of repairs.

In 50 years who knows what mods/deletes were done. NLA isn't a new thing, folks have been Gerry rigging stuff for a long time. Maybe the manuals have routing the stuff for your year(s).

Land Cruiser Factory Service Manuals (FSMs)

Factory service manuals (FSMs) for your Toyota Land Cruiser ! From the 1950s to the present!

www.cruisercult.com

 

[AdamKFarmer]

I don't see anything broken either. His is a picture from an earlier model (79 maybe?) and yours is later using the same part numbers. Simple as that. Download the emissions FSM and take a look

 

[wimberosa]

City Racer is showing the 1979 configuration of smog which uses those 3 colors. I believe the top port on the upper hemisphere of that thermostat is a 1979 only setup. You really need to take a look at the emission control manual for your year model to get this figured out. The actual blue/pink/violet vsvs are useable across model years but you need to line up the correct color for your port configuration.

If in fact you have a 1979 fj40 and you DON'T have that top port then your rig doesn't have a stock configuration.

 

[cbmontgo]

What do those ports actually do?

 

[wimberosa]

They're effectively temperature activated switches allowing vacuum to circulate when "on"

 

[Pitter Patter]

City Racer is showing the 1979 configuration of smog which uses those 3 colors. I believe the top port on the upper hemisphere of that thermostat is a 1979 only setup. You really need to take a look at the emission control manual for your year model to get this figured out. The actual blue/pink/violet vsvs are useable across model years but you need to line up the correct color for your port configuration.

If in fact you have a 1979 fj40 and you DON'T have that top port then your rig doesn't have a stock configuration.

Gotcha. Mine is a 1981 and it all appears stock. Was just surprised to see that extra one on top. Here’s a pic of what broke, it was the lower of
The two on my setup.

And this is the one that’s NLA from Toyota. Unsure of which one to purchase from City Racer to replace this. The part # on this is what’s in the thread title

 

[wimberosa]

Thats the pink one. It is in fact the lower port bvsv on the 1981. So yes city racer has this one.

 

[Pitter Patter]

Thats the pink one. It is in fact the lower port bvsv on the 1981. So yes city racer has this one.

Bro, you the man. Thanks so much. Solves 1 of 5,872.4 more problems I have left to solve.

 

[Otis]

A cheap and easy fix is to use a toothpick placed in the hole to realign the broken piece with the base and JB Weld it back together. I have repaired a couple vacuum switches using that method and they still work...