mbomberz1

Would anyone be willing to take a few quick measurements of your stock dual cat system?

I am trying to wrap up my 3.4 swap, and I don't have access to a California spec 4runner with the dual cat exhaust system to measure. I need to know the distances in the little diagram I drew below.

Really appreciate the help guys!!! I don't want any trouble with the California bar police


A is the distance from the first flange to the start of the 2nd cat.
B is the distance from the end of the 2nd cat to the middle of the 2nd o2 sensor.
C is the distance of the entire pipe, flange to flange.

wyoming9

iTrader: (1)

If you don`t get a answer till I get done with work I will measure .

I have a new exhaust system to go on.

Are you using the stock front Cat?? If so the sensor bung is all ready in the assembly

See there is the intermediate pipe between the front cat and the second cat that pipe has flanges on both ends

I have no idea if you need to duplicate the factory exhaust

mbomberz1

Thanks wyoming, I probably should have made it more clear in the diagram but I am basically looking to recreate the intermediate pipe you are talking about. I have the factory front/down pipe with the o2, cat and flanges. Just need to duplicate/recreate that intermediate pipe.

wyoming9

iTrader: (1)

I must say I completely forgot distracted by phone problems

You might want to shoot me a PM to remind me

mbomberz1

No worries, im gonna send you a PM right now Thanks for the help!!!

Here is what I have got so far, if you could just tell me the entire length of your intermediate pipe that will do.



I am pretty sure the back half with the o2 sensor is close enough based on pictures I have seen, but would like to get a pretty accurate measurement of the entire length.