3.4l 5vz-fe headers

[GunslingerT4R]

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’m 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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[Bad Luck]

You’ll need the first oxygen sensor to be upstream of the catalytic converter

 

[Ed_C]

BTW did you rebuild the engine or just "refresh" the heads?

 

[GunslingerT4R]

You’ll 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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[GunslingerT4R]

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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[GunslingerT4R]

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’m seeing on videos is different.


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[jbtvt]

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

 

[Devbot]

View attachment 400139
View 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’m seeing on videos is different.


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What I wouldn't give for a lift and tube bender in my shop, or else I'd be right behind you :lol:

 

[19963.4lsr5]

There is a tool set to remove the shims. It takes practice using it…..


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[gamefreakgc]

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.

 

[Ed_C]

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

Any updates?

 

[Tacotaco]

Does anyone know if the red back headers that are for the Toyota hilux fits the same engine on a 3rd gen 4runner? I ended up cutting my exhaust out while taking my heads out to redo the head gasket. Would rather straight pipe it out vs using the crossover pipe. So headers and dual exhaust is essentially what I am doing. Not for more horsepower just for ease at this point. Here is the link I was looking at.

Redback Headers Fits Toyota Hilux VZN167-172 5VZ-FE 3.4L Auto RBH276A | Sparesbox


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Yo bro, I actually bought this on eBay for my Toyota pickup 1990 swapped 5vz, the will email to ask if ur truck is manual or auto and to make it on the left side or right side, u don’t have to do much fitting, the only problem you’ll have is the torchen arm bar, these headers do fit u js need to create the pipes at the header connecter, I connected it into one but if u do dual exhaust pipes make sure u cover the fuel filter since the Exuasht will be close to it

 

[Ed_C]

Just looking at it, I don't think it will fit a 4x4 4Runner due to interference with the front drive shaft and transfer case. That is why the exhaust cross-over is behind the engine and the exhaust runs down the right side.

OP's 4Runner is a 4WD though...