[Gouky]

I wish I would have seen this post earlier. I designed those headers and I can say that they fit any 2GR motor with any of the A/C compressors that I've ever seen on them (i went through about 12 to design these, including a Rav 4) it'll also clear the stock oil cooler if installed. the only thing it doesn't clear is the AWD box. this is strictly for 2WD models.

the power gains are very serious. with measured power between 270 and 300HP at the wheels (depending on the rest of the exhaust) but that's with manual transmissions so in the rav4 application the power would be a little less.

if someone is still sceptical, i'll guarantee a 100% refund if they don't fit. even the shipping back (because i know they'll fit)

they do eliminate the primary cats. all other emissions stuff is not affected, especially since the 2GR-FE does all the emissions stuff internal to the head and mostly using the VVTI valves. without the primary cats you'll set a check engine light and fail emissions tests. the check engine light can be turned back off with this: http://www.urdusa.com/product_info.php?cPath=66_170&products_id=1260518515 (not affiliated with URD, but they make good products)

anyways, feel free to post questions, i'll try to answer all of them.

 

[Gouky]

Well guys, their you have it. Like Myxalplyx says: "It is what it is". Now that we have heard it from the mouth of the Lion. With a guarantee of 100% refund, their is no reason why you shouldn't consider installing a set of headers. Also remember, depending of your driving, you bump up the fuel economy. Depending on the rest of the exhaust approximately 270 and 300HP is some serious power. From almost a stock engine. Believe me, you will get cold feet and hands when you stomp on that throttle. :egad: :thumbs_up: with this post, Gouky has made my day. What about the V6 men of this forum?

yeah, i'm actually concerned slightly if this will simply be too much power in a FWD application.

in my MR2, this motor with these headers feels simply amazing. the torque just goes for miles and miles and the noise when the VVTI throws in a bunch of overlap is glorious.

 

[Gouky]

Wow! 300whp is rather incredible for just a set of shorty headers. :egad: How do you explain such gains? Do you have a dyno sheet that you could post?

The picture is a bit deceptive, they are more mid-length than shorty. 10.5" runners if you unfold it (all equal length and almost equal bends on all three pipes)

it isn't so much how much the headers are adding power, but how much power the stock exhaust is restricting.

here is the full audio assault: http://www.youtube.com/watch?v=zJO_2wz9wk8 (yeah i know, the rev-limiter is getting a workout there)

better than a dyno is the 1/4 mile times. it's hard to fake out physics:
on 18" rims with street tires i was able to get:
1.7sec 60' times and a 13.1seconds 1/4 at 104mph.
weight at the time was 3050lbs (car+driver)


here's a dyno chart from one of the earlier iterations:

the guy running the dyno applied a -5% correction on that chart for some reason so the peak was actually 291RWHP (or 340HP at the flywheel). the drag time backs that up. but even if you don't believe that, 277 is still high.

if someone is near Fort Wayne, IN. i'd love to do the install for them and we can get a before/after on the same dyno.

 

[Gouky]

I do not have a problem being the guinea pig. It's just that once I get the header(s), I would be taking it to a shop to install like say...Meineke or Midas mufflers. They don't have a clue on making new O2 bungs. They could handle connecting two cats though. *SNIP to keep it short*

no, i'm not monkeywrench racing. i'm Frankenstein Motorworks (or FMW as mentioned on monkeywrench racing's site. I know Matt, he's a pretty good guy and I'm not surprised at all he's offering the same type of deal. feel free to get them through me or through him. it's the same price.

Making that Y pipe is probably slightly beyond the abilities of midas of meineke. plus, you'll be loosing some horsepower if you don't use mandrel bent tubing.

the pictures you have there are the what i made for my car before i intended to mass produce headers. that was just hand made 1-off by me. they dyno'd pretty well but not as well as the ones i now sell.

i searched and for some reason i never took pictures of the front header installed but here are other people's install pictures:

here's a verbal description of what the motor feels like when woken up: http://www.twobrutal.co.uk/forum/sh...Meisters-Mk1-2gr-fe-conversion-project-mindfuck.&p=222275&viewfull=1#post222275 (this is a 2GR-FE swapped into a 1st generation MR2 chassis (AW11))

here's a sample y-pipe for that specific application:

i'll see if i can find a pic of the front output location with an A/C compressor on.

 

[Gouky]

BTW, how much HP do these engine bring from Toyota, STOCK?

missed this post. 205-215 at the wheels depending on the exhaust for that perticular chassis.

which is about the rated 268HP at the flywheel toyota rates these for.

 

[Gouky]

You are three hours from me and that offer is tempting, but I promised wifey that I would leave the RAV stock. :lol:

yeah, the SAE correction is what he thought he was applying, but it doesn't really matter. 277 or 291 is just a number. 1.7second 60' time feels like you're in the space shuttle on takeoff and that's the part that puts a smile on my face every time I drive it.

as for temptation, don't worry... if this is the rav4 in your signature "08 RAV4 Limited AWD V6" it won't fit anyways, the AWD system forces the rear exhaust header to be completely different and the design i made does not fit. I'm sorry.

 

[Gouky]

for the guys concerned about the front clearance, here is a better picture. there's no A/C compressor installed but you can see that there is definately room for it: