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Factory 2.7 Header

9104 Views 16 Replies 8 Participants Last post by  LukeDuke
I was looking around for the factory 2.7 header install and was wondering if they will work on a 2.4 as well? I know they will bolt on the head but my main concern is will it mate up to the exhaust pipe. Or do the '01 and up 2.4 use the same type of tubular exhaust manifold?
My Tacoma is a early '00 Tacoma 2.4 non cali-emmissions.
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Ok just read a write-up on Yota-Tech forums and he installed one on a 96 2.7 Tacoma. I double checked and from what I can tell....
'96 Taco 2.7 cast manifold p/n 17141-75030
'00 Taco 2.4 cast manifold p/n 17141-75030 (same as 2.7)
'01+ Taco 2.7 tubular manifold p/n 17141-75080

So from what I can tell from this guy the factory exhaust pipe bolts to this tubular one with no modifications. So if the 2.4 and 2.7 cast mani are the same then I or anyone else should have no probs bolting this on and picking up some extra power. Just answered my own question....

Heres the write-up.
http://yotatech.com/f2/oem-mini-header-install-2-7l-pics-157752/
Nice work:D
Cheaper then a 300+ dollar header, mind you the performance would be better with a LCE or DT but hey my pockets arent that deep.
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Cheaper then a 300+ dollar header, mind you the performance would be better with a LCE or DT but hey my pockets arent that deep.
Compared to the DT that I had (then returned), that factory header looks great! The DT one for Cali dual-cat models looks only minimally better than the stock exhaust manifold.

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would this give any gain for an 04 2.4 over the stock manifold?
Maybe ver little. Do lc long tube lc reports 15 whp
Maybe ver little. Do lc long tube lc reports 15 whp
Yeah, not much... Of course it helps to address both the intake and exhaust to maximize the benefits (complimenting mods). Afterall, you can't get it in if you can't get it out. And having a header and hi-flow exhaust w/o improving the intake will only do so much.

btw, per my LCE catalog, their header does yield 10-15 hp (edit: it's 15-20 hp), but has to be used with their FAL e-fan (or other e-fan) and K&N CAI (or a similar setup) for this gain.
I need a new 2.4L (2RZ) exhaust header piece. It is the piece that bolts on to the cat and the manifold (between). Does this mean the 2.7L "2 into 1 header pipe" will work in place of my 2.4L "header pipe"? All this is stock.
I need a new 2.4L (2RZ) exhaust header piece. It is the piece that bolts on to the cat and the manifold (between). Does this mean the 2.7L "2 into 1 header pipe" will work in place of my 2.4L "header pipe"? All this is stock.
3RZ has a 2.5" pipe where it bolts to the cat, 2RZ is 2.25". Don't know if there are other differences, but that's something to consider.
btw, per my LCE catalog, their header does yield 10-15 hp, but has to be used with their FAL e-fan (or other e-fan) and K&N CAI (or a similar setup) for this gain.
or maybe with a supercharger :D
Buy installing a e-fan and K&N thats prolly 10hp right there..... I like the quality of there long tube header but why waste the money. I have a K&N and according to the butt-dyno that was prolly a good 5-8hp right there lol, as soon as I get this tubular manifold I will have a custom cat back made and see how it does then.
or maybe with a supercharger :D
or tubro :waytogo:


Buy installing a e-fan and K&N thats prolly 10hp right there..... I like the quality of there long tube header but why waste the money. I have a K&N and according to the butt-dyno that was prolly a good 5-8hp right there lol, as soon as I get this tubular manifold I will have a custom cat back made and see how it does then.
Not a waste, imo. Quoting me:
Yeah, not much... Of course it helps to address both the intake and exhaust to maximize the benefits (complimenting mods). Afterall, you can't get it in if you can't get it out. And having a header and hi-flow exhaust w/o improving the intake will only do so much.

btw, per my LCE catalog, their header does yield 10-15 hp (edit: it's 15-20 hp), but has to be used with their FAL e-fan (or other e-fan) and K&N CAI (or a similar setup) for this gain.
SG says my n/a'd motor is making 190-ish bhp on 87 octane. Truck is a blast to drive, no longer a slug (not a Mustang GT beater either, by far) and is getting around 20-23 city and 24-27 hwy mpg.


e-fan??? you're kidding, right?!?!?
Frees-up a some ponies and increases mpg a bit, also less wear n' tear on the water pump. I think an e-fan is one of the better bolt-on mods. Works very well with LCE's underdrive crank pulley - really wakes up an otherwise stock motor.
or tubro :waytogo:
.
i'd like to see you get that with a turbo and the LC header :looney:
i'd like to see you get that with a turbo and the LC header :looney:
STS :nana:
Ok heres the plan, before I install the oem tubular header, I will have mine dynoed. Ive got a local guy here with a dyno that offers dyno days, 10+ peeps its $50 for 3 pulls. After I make the runs I will post up, then I will install the oe header and go make another dyno run. After that I will post up the difference between the stock manifold and the oem tubular one.
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