Headers or Not??

[Terrax]

I run the Downey smog legal header, Mark's Offroad is supposed to be the same. As for problems with taking forever to warmup the motor, buy a fluid heat riser:

http://man-a-fre.com/parts_accessories/heatriser.htm

 

[Tigerstripe40]

I've run the Man-A-Fre 6 to 1 header since I bought my truck back in 2000. I had the exhaust system redone in 2003 or 2004 and it matched up to the header.
The first header developed a crack a few years ago so I bought another Man-A-Fre header. It bolted right into place.

Sure the floor under the drivers side gets a bit warm, but I've never really seen this as an issue. The Land Cruiser is cold in the winter and hot in the summer, just the nature of the beast. Cold starts haven't really been a problem for me when I was DDing my FJ40 in the winter.

The 1 vacuum line I have (the vac advance line from the carb to the distributor) is a high temp silicone line, so heat embrittlement hasnt' been an issue.

If you've got a good stock exhaust manifold and downpipe, keep running it, if you don't, go for the header. Just my humble opinion.

 

[Cruz4mud]

This may be a dumb question, but what does the fluid heat riser connect to? And can I do later with ease?

I checked it out at man-a-fre's site.

 

[Terrax]

https://forum.ih8mud.com/40-55-series-tech/438035-fluid-heat-riser-hose-routing-pics-wanted.html

 

[Cruz4mud]

Ok so I just got a lightly used header and intake off a buddies FJ40. Hopefully this will work!... I also have a new OEM gasket.

Should I use this ultra copper gasket maker on both sides of the gasket or not?

 

[Pighead]

Should I use this ultra copper gasket maker on both sides of the gasket or not?

Yes. and on all the mating surfaces.