Next item on my list: manifold gasket probably needs replacing: (1 Viewer)

[Orange76Cruiser]

And it’s been a very long time since I’ve done that type of work on a FJ40. Like, late 1980’s long time.

But I do remember the “ticking” sound when there is a exhaust gasket leak. But how much work is it to take the manifolds off? I don’t have the original carb and air filter installed, I’ve got a aftermarket one, put on by the previous owner. The tailpipe was replaced last year and I don’t hear the ticking noise as loud from where the header attaches to the tailpipe. I know a local mechanic that could work on it but if it’s not too difficult I would prefer working on it myself.

 

[B y r o n]

Ticking can also be from lifters out of adjustment.

 

[Orange76Cruiser]

Ticking can also be from lifters out of adjustment.

It just started making the noise, about 8 or so miles into a trip. It SOUNDS like it’s coming from the manifold area, but accurately pin-pointing a location by sound alone is difficult.

Right now the sound drops to almost unnoticeable at engine idle speeds.

 

[HeavyD]

Just took my manifolds off recently. Once you get the carb off, there are 8 bolts for the manifolds and 3 nuts for the exhaust manifold to the pipe. The bolt next to the firewall is a little tricky, but not bad at all if your bolts break free easily.

 

[fjc-man]

I would recommend removing the left fender and apron to tackle this job. Really increases the access to remove and install this heavy and awkward manifold assembly.

 

[OlYellr]

That is a two person job for sure! I removed mine a couple weeks ago - didn't remove the fender (went that route having angled sockets/ratchets and got lucky and didn't mess with removing carb first)- with two people - took about 15 minutes to remove.

Then put it on with new gaskets (and engine) to see the manifold warped (no signs of warp when I removed)... I saw a thread on MUD about a brand of gaskets people like with not sealing vs machining. Mine is at the shop now getting machined.

Good luck

 

[fjc-man]

Fender on and bib off for your R+R. Did you prefer that method?

 

[OlYellr]

Fender on and bib off for your R+R. Did you prefer that method?

I think this Q is to me... Bib was off only because I was removing the engine to install a 2F I had rebuilt - putting the old manifold on new engine exposed the warp.

Would have done the same way with bib on. Maybe I got lucky.

It was removing the Weber carb the PO installed that would be a pain to remove while the manifold was intact vs taking all off in one shot with fender on (or off for that matter).

 

[Pitter Patter]

Only potential problem with this job is the risk of breaking bolts and studs. Mine had never been apart until now and I encountered a lot of breakage even though I soaked everything for days in advance, used heat, hand tools, was careful, blah blah. It turns into a big job if that happens but it’s not so bad if you luck out on the bolts and aren’t messing with anything else. Also a lot easier if you’re desmogged. There’s a lot in the way if you have the smog equipment.