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Old 09-16-2022, 03:20 PM #16
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I値l be installing mini cats most likely.


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What are you going to do about the upstream oxygen sensor since it will no longer be reading both exhaust banks?
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Old 09-16-2022, 06:26 PM #17
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What are you going to do about the upstream oxygen sensor since it will no longer be reading both exhaust banks?
This is the part I知 interested in, I壇 imagine you would need some sort of X pipe to put the sensor in since I don稚 think you could make two sensors work
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Old 09-16-2022, 09:00 PM #18
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as far as I know, he will be ok by reading only 1 bank of the two no problem. You read 3 cylinders and assume the other 3 are at the same ratio. Some people have been running like this forever.
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Old 09-17-2022, 09:12 AM #19
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Quote:
Originally Posted by RandyBobandy View Post
This is the part I知 interested in, I壇 imagine you would need some sort of X pipe to put the sensor in since I don稚 think you could make two sensors work

I知 going to do an H pipe to allow for more even flow of exhaust. Oh and btw they fit like a glove. Haven稚 bolted them in yet, just mocked them up.


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Old 09-17-2022, 04:42 PM #20
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Originally Posted by GunslingerT4R View Post
I知 going to do an H pipe to allow for more even flow of exhaust. Oh and btw they fit like a glove.
Cool they fit! Have you test-fitted the included Y-pipe?

I wonder if using an equal-length Y would give it a nice, smoother tone like the newer Tacos with an equal-length Y.
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Old 09-18-2022, 10:32 AM #21
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Quote:
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Cool they fit! Have you test-fitted the included Y-pipe?

I wonder if using an equal-length Y would give it a nice, smoother tone like the newer Tacos with an equal-length Y.

No I知 not using the Y pipe. Going to cut the ends of the headers and weld V bands on and connect them with a fabricated H pipe and run true dual exhaust. Installing an o2 sensor on the h pipe and a mini cat on one of the exhausts


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Old 09-18-2022, 10:27 PM #22
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You’ll need the first oxygen sensor to be upstream of the catalytic converter
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Old 09-19-2022, 06:49 PM #23
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BTW did you rebuild the engine or just "refresh" the heads?
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Old 09-25-2022, 09:43 AM #24
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Quote:
Originally Posted by Bad Luck View Post
You値l need the first oxygen sensor to be upstream of the catalytic converter

Yep. It will be. Waiting on a side job to get the rest of the parts. Got the header flanges cut off and the first V bands welded on. Stainless steel exhaust pipe is kinda pricey lol


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Old 09-25-2022, 09:44 AM #25
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BTW did you rebuild the engine or just "refresh" the heads?

I had a head gasket failure, so I hade the heads resurfaced and checked the block for cracks and clearances.


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Old 10-01-2022, 05:31 PM #26
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3.4l 5vz-fe headers-img_0829-jpg
3.4l 5vz-fe headers-img_0828-jpg
Got them installed the other day. Just waiting for some more funds to become available to buy the rest. Does anyone know about valve clearances? I thought you always checked with the lobes facing up but what I知 seeing on videos is different.


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Old 10-01-2022, 09:30 PM #27
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Correct, up or sideways, as long as the lobe isn't touching the shim. The book has you do it in 2 (if I recall) passes, rather than moving many times to get every lobe straight up, but you can do it either way
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Old 10-02-2022, 10:52 AM #28
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Quote:
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Attachment 400139
Attachment 400140
Got them installed the other day. Just waiting for some more funds to become available to buy the rest. Does anyone know about valve clearances? I thought you always checked with the lobes facing up but what I知 seeing on videos is different.


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Old 10-02-2022, 10:54 AM #29
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There is a tool set to remove the shims. It takes practice using it..


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Old 10-02-2022, 07:57 PM #30
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I see some daylight between the pipe and the steering shaft! I think you got it.

Yes lobe pointing up or at least higher than the 9 o'clock or 3 o'clock positions. If it's facing any lower than that the cam lobe starts to taper and you'll get a bad measurement.
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