That is a stock crank pulley for a 96'+ 1.6L

I got the key from ZukiNation/Altered Ego Motorsports

There's a lot of room around the bolt holes in a stainless steel header because of the expansion rate of stainless. If the mounting holes were bored exactly to fit,  most of the studs would shear off during the first heat cycle. I built my SS turbo header with the same type of EGR passage cut into the back of the flange. Works well.

Huh, didn't even think of the expansion rate.  Gosh your full of useful information! 

it's  very much like the DT header as the "Tri-Y" is there design as far as i remember. But is it smog legal ?

Quote from: bentparts on April 30, 2012, 03:59:14 PM

There's a lot of room around the bolt holes in a stainless steel header because of the expansion rate of stainless. If the mounting holes were bored exactly to fit,  most of the studs would shear off during the first heat cycle. I built my SS turbo header with the same type of EGR passage cut into the back of the flange. Works well.

Huh, didn't even think of the expansion rate.  Gosh your full of useful information! 

My wife says I'm full of " something " allright. 

it's  very much like the DT header as the "Tri-Y" is there design as far as i remember. But is it smog legal ?

Significant differences as far as a header goes, DT uses a 90 degree bend at the bottom, this Xtreme header uses two 45 degree angles which produces far less restriction. And then you have the length of the primary tubes which are significantly different in length(even an inch of length creates a different rpm range header)

The "tri-Y" is not a DT created design, it has been around for far longer than DT has.

Being smog legal has absolutely nothing to do with actually pollution output, and everything to do with paying the graft to be tested and approved by Cali. For me here in NY it is perfectly legal, any portion of the exhaust can be changed after 8 years or 80K miles(whichever occurs first) and as long as it passes OBDII checks, passes a sniffer test and a Db check it is legal. I dont know how NY state could ever have something that makes common sense as they are almost as retsrictive as kommiefornia, LOL

TalonEx, is that header and timing key mod meant for more low end umph? Man, I'd like to find a way to get more bottom out of mine. Next step is supercharging 

that is EXACTLY what the mods are intended to do. I am looking at lowering the power band and enhancing the low and midrange.  My Sidekick with 31's and 5.13 diffs is a tad whimpy and needs the power to come on sooner.

Good ideas both. I think I'm going to pick up one of those offset keys for the engine I'm building now. With the forced induction helping the top end, maybe I can squeeze a bit more off the bottom too.

Well I got the header installed finally, it went fairly easy without many hicups, LOL

Within a minute of starting the engine the header started smoking like a 2bit whore for half an hour! LOL

All the little tics and noises are GONE !!!!

That POS stock mani had three cracks in it!

I have taken several rides after installing the new header and resetting the ECU. All of the power is back that was lost to running so rich from the cracked mani. By the "butt dyno" there were some decent gains in the midrange. Hard to tell if the gains felt today were from the elimination of the cracked mani and resulting rich condition, or the header providing the gains, my bet is a little of both, but hard to prove without some dyno time. But I am happy with the gains/power so far, next will be the timing key(forgot to get a new cam seal) and then a torquer cam. 

Did you add an additional brace on the mount for your air intake?  I don't have that bar that comes down over the studs between the number 3 and 4.

No need for any additional support as the support was included with this header. That bar is actually the bottom leg of a "T" and the top cross of the "T" has 2 welded nuts to bolt up the air intake support just like normal. Sorry, should have taken a picture but forgot to, but that picture sorta shows it.

I really like the drivability now, I have taken a bunch of trips up and down the mtn like a kid with his first ride, LOL

It was running really fat, low teens in the fuel mileage and making a bunch of strange noises, now it is very quiet, running the proper A/F and thusly leaner and more powerfull, and hopefully better mileage, though driving like a maniac may affect that....

What size tubing is the header? & do you think a H/P cat/muffler & exh. system will give you more power & perhaps MPG.

The primaries are 1.12 ID, secondaries are approx 1.5 and the collector was just a BCH over 2".

I already plan on snagging a new cat and muffler as what is on the Sidekick right now are stock spec NAPA replacements. I plan on a Magnaflow mettalic core spun cat, 2" mandrel bent tubing and a Dynamax VT muffler to maintain back pressure when needed and offer free flow at WOT.