I did all this exhaust work with the following items.
2.5" stainless steel exhaust pipe with mandrel bends from manifold to tailpipe.
Purchased from Speedway Motors. Really happy with the quality of the bends
in this mandrel kit. It included 12 mandrel bends and I used almost everything.
Very little of the straight pipe is needed.
- Speedway Motors Stainless Steel Exhaust Bend Kit, 2-1/2 Inch (Part #91013828)
I went with a walker CARB cat 80905. It has 2.25" inlet/outlet. This was unfortunate
downsizing as I was intending to keep it at 2.5" all the way through. However there
are very few CARB compliant cats that are approved for the pre-OBDII land cruisers.
This is the second cat i attempted to work with. I got another direct-fit CAT (for the
1979 FJ40) from another CAT supplier. I was not happy with that cat as it was not
remotely square end to end and there was weld slag in the internal cell area. Thankfully
they respected their return policy with no issues and I switched to the walker universal
cat and welded it myself. Very happy with the walker setup.
- Walker CalCat CARB 80905 Universal Catalytic Converter (2.25 Inlet ID 2.25 Outlet ID)
BTW...if you want to know what CAT actually is compliant with your vehicle ... if you
are in a state that mandates a CAT style... then you can find it at arb.parts. Here
is the link for the 1979 compliant CATs in colorado (we're tagging along with NY and CA)
arb.parts
The muffler I'm using is a Ford truck style from the 80s.
- Walker 17160 - SoundFX Steel Round Aluminized Exhaust Muffler
(2.5" Offset ID 2.5" Offset OD. 20" Length)
The flanges to connect the cat and the muffler up are the 3.4" bolt pattern
that toyota uses. These aren't the exact same as the OEM flanges because
the OEM ones have a well where the compression gasket sits in. The flanges
I'm using have the correct bolt pattern but are flat across the face. Close
enough to a part that is NLA!
- Vibrant Performance 3-Bolt 2.5 Inch Exhaust Flange 1482S
- Vibrant Performance Exhaust Flange Gaskets 1462