Hilux V6 with Tacoma Headers and tuned length Y pipe

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Re: Hilux V6 with Tacoma Headers and tuned length Y pipe

Postby Philby on Wed, 08 Apr 2015 11:56 +0000

Hi Sideways, understand your thinking. I fitted long tube headers with 2 3/4" exhaust sometime ago and with the TRD s/c manage 291 rwhp all day everyday on the factory tune.
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Re: Hilux V6 with Tacoma Headers and tuned length Y pipe

Postby Tradewind on Sat, 18 Apr 2015 5:39 +0000

I run this when I am not set up with something else. Very noisy intake but nothing touches it for power above 4000rpm. I made the mistake of going back to the entirely stock intake for a few weeks and simply couldnt get it off the motor soon enough. A high flow exhaust system is needed to get the the best out of these, as they focus on the mid upper rpm range for power improvement

Mounting them to the Hilux is a bit of an issue too, as you will find out.


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Re: Hilux V6 with Tacoma Headers and tuned length Y pipe

Postby Sideways on Sat, 18 Apr 2015 4:45 +0000

Sorry for the late reply fellas but great to hear positive feedback.
Lux is booked in next week at the Horsepower Factory for a baseline Dyno run with the stock set-up.

For those interested (in Melb) these guys have done quite a few TRD's from stock(ish) to some with big $$$ mods and they're not impressed with ANY of the snorkels they've seen fitted to either NA or SC Luxes.
They've had huge improvements with the CAI and exhausts but as soon as they've fitted snorkels back on (the vehicles that had them) they lose nearly all of the recent gains.
I discussed the bigger diameter Denso snorkel that's been detailed here on another thread but they were still very skeptical.
Their advice (at this point) was to fit the snorkel but leave the connecting hose under the guard off and install it only when doing a trip involving water crossings. Hardly ideal after spending $1000 on a snorkel and airbox set-up but not sure what else to do........

Anyway, exhaust has been ordered (long tube ceramic Hurricanes and the 3" system) - should arrive late next week. Mark from Hurricane Performance was sure the check engine light will come on without a tune and disconnecting the rear sensors.
It'll be interesting to see the results as new wheels with 265/70's are going on as well. The slightly bigger rolling diameter will no doubt take a bit of the sting out of it.

Cheers, S
Good drivers have dead bugs on the side windows..........
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Re: Hilux V6 with Tacoma Headers and tuned length Y pipe

Postby Tradewind on Sat, 18 Apr 2015 4:51 +0000

Exactly what I would expect from a snorkel
Hilux V6 4.0 - 2006 with Supercharger. 256rwkw/320kw engine - 575Nm Torque
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Re: Hilux V6 with Tacoma Headers and tuned length Y pipe

Postby Pete'90 on Sat, 18 Apr 2015 5:09 +0000

Would that have a lot to do with the fact that the big fans you place in front of them on the dyno can't force air up to where the snorkel mouth is. So once on the road and driving the air being forced down the throat of the snorkel and also being sucked in by the blower would basically void the losses you had found with your workshop testing.
Build thread:
viewtopic.php?f=41&t=23139

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Re: Hilux V6 with Tacoma Headers and tuned length Y pipe

Postby Sideways on Sat, 18 Apr 2015 5:24 +0000

That's an interesting point Pete, hadn't thought of that.....
I'll raise that with them next week and see what their response is.

You're quite right about the ram effect with the snorkel at higher speeds but I wonder about the actual internal diameter of most snorkels - I can't imagine they designed them originally with SC applications in mind.

If most start with 4" openings and through the passage ways, bends etc, reduce in places to around 3", then you've got the CAI with a 4" inlet/outlet tapering back down to the TB, the air is going through all manner of different flow rates.
Even with my (very) limited grasp of flow dynamics, all those size changes can't possibly be efficient.

Cheers, S
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Re: Hilux V6 with Tacoma Headers and tuned length Y pipe

Postby mchieff on Sat, 07 Nov 2015 7:41 +0000

Hey mate, awesome job and write up on this exhaust.
Love the detail and thoroughness that you've provided, best i`ve found.
Any update on the cai, your excellent details has me holding off until i get real quantified results from yourself lol.
Any details on the fuel improvement you got in real terms, % or increase in range etc?
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Re: Hilux V6 with Tacoma Headers and tuned length Y pipe

Postby Sideways on Tue, 05 Apr 2016 6:05 +0000

Sorry, been away for awhile.
No chip/pulley done (yet). Ran out of time before trip and not a priority since returning.
Headers and 3" exhaust - good gains up high but lost power down low and it DRONES :( :(
Think very hard about the 3" as you'd want a lot of mods done to get the most from it.
4" stainless snorkel - excellent flow, looks awesome but a bit more induction noise into cabin (as you can imagine)
Cheers, S
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Re: Hilux V6 with Tacoma Headers and tuned length Y pipe

Postby Gulfstream8 on Wed, 13 Apr 2016 8:51 +0000

Sideways wrote:Sorry, been away for awhile.
No chip/pulley done (yet). Ran out of time before trip and not a priority since returning.
Headers and 3" exhaust - good gains up high but lost power down low and it DRONES :( :(
Think very hard about the 3" as you'd want a lot of mods done to get the most from it.
4" stainless snorkel - excellent flow, looks awesome but a bit more induction noise into cabin (as you can imagine)
Cheers, S


Hello Sideways - yes what you experienced and what a lot of others in the States also experienced (loss of power and torque plus engine drone) are the reasons I put so much effort into this exhaust.

Sorry been away for awhile and a lot happening but as promised I will get the Hilux back on the Dyno to do a back to back comparison on the TRD CAI next week.

FYI - while I was busy with other things I was also delayed with a freight damaged TRD CAI then a very poorly made one so by the time all that got sorted the months just disappeared.
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Re: Hilux V6 with Tacoma Headers and tuned length Y pipe

Postby Sideways on Mon, 18 Apr 2016 6:49 +0000

Yes, in hindsight, the 2.5" system would have been the better choice but it's fitted now so no going back.
I guess I'll just have to fit the URD pulley :D
One positive was the exhaust system was significantly cheaper through Hurricane Performance in Melb....
Next job is ridding the Lux of those useless rear drums and getting some decent brakes on it. :evil:
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Re: Hilux V6 with Tacoma Headers and tuned length Y pipe

Postby Gulfstream8 on Wed, 20 Apr 2016 10:52 +0000

Great news the TRD CAI is not an Urban Myth

We just made an extra 20 RKW in the mid range !!!!!! It works and it works very well.

Massive KW and NW gains right throughout the entire rev range from right down low where you drive it most.

Back with a full report soon

Cheers

Gulfstream

Edit: 20/May/2016

Sorry for the delay but I have finished road testing the Tacoma TRD CAI and I cannot find any problems with it. I'm also trying to work out a way for it to be an easy installation for people at least at a handyman man level.

Once this is done I will upload everything including Dyno results and an installation procedure for the Hilux.

What I can assure you all is that the Tacoma TRD CAI works very well and I would go so far as to say I have never ever seen anything work this well for the price on a naturally aspirated engine in all my life of playing with engines ----- aside from NOS :twisted:

Edit 25/May/2016

As above I have finished testing the TRD CAI and all is good (re: A/F etc in all conditions) but I'm going to have to re-run the fuel economy tests as I don't believe them. I ran a back to back test from inner west Sydney (heavy traffic) to Nelson Bay loaded up 800kg of gear and back to the same fuel bowser and the results are too good (empty up and loaded back total of 411klm) ---- 2.6lts less per 100klm. Like I said I have to run this again as it seems too good to be true.
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Re: Hilux V6 with Tacoma Headers and tuned length Y pipe

Postby Gulfstream8 on Thu, 02 Jun 2016 1:39 +0000

As promised here is the direct link to the TRD CAI for the Hilux including Dyno Testing, review and installation

viewtopic.php?f=81&t=27016&p=395218#p395218

Cheers

Gulfstream
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Re: Hilux V6 with Tacoma Headers and tuned length Y pipe

Postby Gulfstream8 on Sat, 11 Jun 2016 6:02 +0000

Exhaust and Header and Extractor plus Turbo Dump Pipe education and information

For people who may be interested in why the above exhaust "Tacoma Headers and tuned length exhaust" work so well the website below from Burns Stainless is absolute gold.

It will clearly explain the importance of correct "Primary" pipe size and the correct "Length" to "Secondary" collectors for power and torque ---- and most importantly where you make it in your RPM and how so many get it wrong. They also clearly explain pipe work size after the headers and on a "V" configuration engine the "y" collector.

Also they bust the myth that 4 stroke engines require "back pressure" and how this is confused with actually getting the pipe work size and length wrong and destroying the scavenging effect.

Enjoy as its great reading if you enjoy quality engineering.

http://www.burnsstainless.com/techarticles.aspx
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Re: Hilux V6 with Tacoma Headers and tuned length Y pipe

Postby Rebel1978 on Mon, 08 Aug 2016 6:30 +0000

Nice clean setup, do you know if the headers would fit a 2008 Prado?
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Re: Hilux V6 with Tacoma Headers and tuned length Y pipe

Postby Gulfstream8 on Mon, 08 Aug 2016 7:08 +0000

Rebel1978 wrote:Nice clean setup, do you know if the headers would fit a 2008 Prado?


Cheers - I see your in Dubai so if your Prado has the Single VVti 1GR-FE just like what we got in Australia I would be confident they will fit. While I have not installed these to a Prado I did a lot of research before importing the Tacoma headers including inspecting FJ Cruisers, Prados both with Dual VVti and Single 1GR-FE and I cannot see why they would not fit.

Toyota is a successful motor company because of this - they try to get engines, gearboxes, diffs, shocks and accessories to fit a lot of other models with little or no modification. Saves them heaps of money.
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Re: Hilux V6 with Tacoma Headers and tuned length Y pipe

Postby Rebel1978 on Tue, 09 Aug 2016 4:16 +0000

I believe my Prado has the Single vvti engine, im not sure about the length of the pipes since its a short wheelbase 3 doors version.
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Re: Hilux V6 with Tacoma Headers and tuned length Y pipe

Postby Gulfstream8 on Tue, 09 Aug 2016 7:16 +0000

Hello Rebel1978 - the manifold length is the same on the short wheel base to long. Toyota simply shortens the exhaust after the transfer case back.

All 1GR-FE V6's have a support bracket from the cat flange at the end of the manifold to the bellhousing which makes the manifold the same length across the models -- however as mentioned above in the installation procedure you will need the Tacoma left hand bracket as the left Tacoma manifold sits in a slightly different position.
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Re: Hilux V6 with Tacoma Headers and tuned length Y pipe

Postby JACKDLUX on Wed, 07 Sep 2016 9:18 +0000

Gulfstream where did you purchase the tacoma parts?

This thread has been great, I am very interested in scrapping my cheap extractors and 2.5 inch drone system and replacing it with your setup mate.
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Re: Hilux V6 with Tacoma Headers and tuned length Y pipe

Postby Gulfstream8 on Thu, 08 Sep 2016 1:46 +0000

JACKDLUX wrote:Gulfstream where did you purchase the tacoma parts?

This thread has been great, I am very interested in scrapping my cheap extractors and 2.5 inch drone system and replacing it with your setup mate.


Awesome - honestly you wont regret it but it wont be easy. The hardest thing will be finding a good Trades person.

Im still enjoying the sound and extra power but to achieve it unfortunately you will have to copy exactly what I have done including the Borla Mufflers, Burns Stainless "Y" pipe and 304 Stainless Steel exhaust pipework. The most important of all is equal length pipe or "Tuned Length" pipes from the headers to the "Y" pipe.

Dont get conned to use anything in 400 series as its not true Stainless Steel in my book. It will still rust and worst of all it does not like heat changes and will work harden and crack. It does cost more 304 and above but its the best. If you cannot afford it you would be better off using good quality aluminized dedicated exhaust pipe than rubbish 400.

Tacoma Parts
I used brand new Tacoma Headers and these are expensive but they are highly engineered and they come with a high flow cat so the cost is acceptable ---- you can however get them very cheap 2rd hand from wreckers in the states and I will show you how to find them below.

New Tacoma parts
I have used both Dallas Toyota and Sparks Toyota in South Carolina and both have been great.

http://www.toyotaofdallasparts.com/Scripts/default.asp
http://www.sparkstoyota.com/

You will have to email them with all the part numbers I have provided. Ensure they only ship one manifold at a time with some parts in one box excreta so you keep both sales under $1,000 --- otherwise the Australian Gov will put their hand in both your pockets

Sparks will be slightly cheaper on purchase price but Dallas Toyota the freight will be cheaper as there are direct freight flights every day of the week to Australia.

Other option is to go to Hawaii for a holiday (flights are so cheap) and pre-order your parts and bring them back but parts there can be more expensive but you save on the freight. Just ensure you go with someone so you can split the tax invoices so you dont get hammered back in Australia for Tax and also so one manifold can go into one suitcase each. Ensure you get your tax back at Hawaii airport before you depart so you effectively buy your Tacoma parts duty free :twisted:

You could use a specialist in "Over Stocked parts" like this one http://www.overstockoemparts.com/oe-toyota/171400p140
but Im not sure how reliable they are. This is now a discontinued item and Toyota would be looking to reduce inventory. But dont panic the dealerships have to keep parts available for 10 years in the states.

FYI - I paid about $600 each for the new header. I actually think this is good value considering this is a highly engineered part that is very very difficult to make. Plus it also comes with High Flow cats.

Tacoma Headers 2rd Hand
Straight up there is a risk - are they bent from an accident or is the Cat melted or blocked. I think if your cautious and get photos etc you should be fine, Plus I have found them online for only $155 US each on ebay so you could go that way and use a reliable ebayer with a good track record.

I would however not under any circumstances use 2rd hand O2 or A/F sensors.

How to find them ----- well welcome to the new way to Google stuff. The new generation is all about images so lets join them. Simply copy and past the Tacoma manifold part numbers individually with word the Toyota in front and do an image search.

I found this in seconds for you

https://www.google.com.au/search?q=Toyo ... 20OImPM%3A

Looks reliable this business --- and I think there also on eBay
https://www.tlsautorecycling.com/search ... tacoma/327

I hope this helps and if you have anymore questions please feel free to ask.
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Re: Hilux V6 with Tacoma Headers and tuned length Y pipe

Postby lefty-go on Wed, 15 Feb 2017 11:43 +0000

Hi mate you are awesome. I just bought a V6 Hilux xtra cab and thought the original headers looked restrictive. I will be doing everything as close to you as possible. I have throughly enjoyed spending hours reading your info. Thank you so much. Craig
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