header?

Hudson_Neon · Post by **Hudson_Neon** » Mon Feb 11, 2008 9:33 pm

ok, so i night be gettin a mag head. will my header bolt up to it?

Adionik · Post by **Adionik** » Mon Feb 11, 2008 9:37 pm

I think the exhaust ports are different

kc2005ptgt · Post by **kc2005ptgt** » Mon Feb 11, 2008 9:41 pm

yes, it will bolt up, BUT, you will not really be able to take advantage of the mag head because of an exhaust restriction. Like Adionik said, the exhaust ports on your mag head are larger than the exhaust ports on the standard head, which means your header ports are gonna be smaller, blocking out the flow. I think there is a picture somewhere of the mag head vs standard head exhaust ports....

Hudson_Neon · Post by **Hudson_Neon** » Mon Feb 11, 2008 9:52 pm

ok, cool. thanks. i have ways aound the size difference. just wondering if the bolt pattern is the same

silverneontuner · Post by **silverneontuner** » Mon Feb 11, 2008 10:44 pm

Mag Head

. Nicely done, are you plannin on doin the full mag intake?

Hudson_Neon · Post by **Hudson_Neon** » Tue Feb 12, 2008 9:30 am

no, i'm gonna ;ook into an AMM intake soon though

OB · Post by OB » Tue Feb 12, 2008 12:22 pm

What kind of header do you have?

Hudson_Neon · Post by **Hudson_Neon** » Tue Feb 12, 2008 12:29 pm

it's a pacesetter. for some reason mine isn't following the "Pacesetter" rule. it's not all rusty. but i can modify it to fit properly

bone-yard-racing · Post by **bone-yard-racing** » Tue Feb 12, 2008 12:47 pm

kc2002acr wrote:yes, it will bolt up, BUT, you will not really be able to take advantage of the mag head because of an exhaust restriction. Like Adionik said, the exhaust ports on your mag head are larger than the exhaust ports on the standard head, which means your header ports are gonna be smaller, blocking out the flow. I think there is a picture somewhere of the mag head vs standard head exhaust ports....

Here you go:

silverneontuner · Post by **silverneontuner** » Tue Feb 12, 2008 2:30 pm

thats a huge differene between exhaust ports.

jckevns · Post by **jckevns** » Tue Feb 12, 2008 3:02 pm

i knew the mag ports were bigger but never realized they were that much bigger

Wenuden · Post by **Wenuden** » Tue Feb 12, 2008 4:47 pm

so... are the coolant and oil passages different between the heads? it looks like, on the exhaust side at least, there's anough room to port the standard head to match the magnum head. if that's the case, a port job, cam and springs would make them identicle, right?

i'm only asking becuase i remember you had a head you were porting, Hudson.

bone-yard-racing · Post by **bone-yard-racing** » Tue Feb 12, 2008 5:23 pm

Everything but the exhaust port is the same. There is not eneough material to punch a stock head out that much. The mag dosent have the same "hump" in the exhaust port.

zeRk_RT · Post by **zeRk_RT** » Tue Feb 12, 2008 7:42 pm

so what could be a good headers for a neon rt 2000+? the obx racing header will work fine?

bone-yard-racing · Post by **bone-yard-racing** » Tue Feb 12, 2008 8:17 pm

BlackDog or FastFabs
TTi
AFx
MPx
Kirk
Pacesetter
OBX
Magnum
Stock

Hudson_Neon · Post by **Hudson_Neon** » Tue Feb 12, 2008 8:31 pm

Wenuden wrote:so... are the coolant and oil passages different between the heads? it looks like, on the exhaust side at least, there's anough room to port the standard head to match the magnum head. if that's the case, a port job, cam and springs would make them identicle, right?

i'm only asking becuase i remember you had a head you were porting, Hudson.

well i did some crunching of numbers. i'm getting the head, cam, springs, the whole works, for $300. i could either do that or... put more time into that damn head, buy a cam, buy springs, buy valves, and all that good stuff. i figured that this was the better way out. i'm buying it form a good friend and reliable source, Jeff B. (Booger Bushings) so i'm not worried about getting a pile of shit. i just need to do some measurements on valve lift and dureation and i'll either be selling the mag cam, or my crane 12 (only for what i paid for it as to not screw over Boneyard)

bone-yard-racing wrote:BlackDog or FastFabs
TTi
AFx
MPx
Kirk
Pacesetter
OBX
Magnum
Stock

does this mean that my Pacesetter is already good to go? cause it seems that it's to only one that Modern sells

bone-yard-racing · Post by **bone-yard-racing** » Tue Feb 12, 2008 8:46 pm

1.) Sell the 12 for whatever you can get for it I made some serious $ selling it to you even more selling the mag springs seperate

The pacesetter is about as good as you can do with a STH. I would go with at least the MPx mid length or a LTH of some sort.

zeRk_RT · Post by **zeRk_RT** » Wed Feb 13, 2008 12:39 am

explain me this if i own a rt 2000+ does this mean a normal obx raing header would not fit or work as it should be?

bone-yard-racing · Post by **bone-yard-racing** » Wed Feb 13, 2008 5:59 pm

Mag header will work on a normal SOHC with no problems
It dosent happen the other way around unfortunately

zeRk_RT · Post by **zeRk_RT** » Wed Feb 13, 2008 8:37 pm

so if i buy headers i have to buy some specific to a neon rt?

03blackrt · Post by **03blackrt** » Wed Feb 13, 2008 9:05 pm

It should be fine. You will have to elongate the bolt holes on the header flange to raise the header up on the head. The port on the magnum head sits about 1/8 higher than the stadard port on the same bolt pattern, giving a better short side radius. You may also need to cut the port opening larger on the header flange; however, the physical size differance in the two port exits are not that great.

I had a stadard flange Kirk LTH on my '03 r/t, all that need to be done to make it a perfect fit was raise the header slightly on the head. I never did this fix on my '03 and it ran fine, just had an 1/8 protrusion into the exhaust flow from the flange. But I do got some pics showing the misalignment issues if needed. I'm sure that just porting the flange, elongating the the opening on the flange upward, would be sufficent too.

Jerome Adams · Post by **Jerome Adams** » Mon Feb 18, 2008 2:08 pm

As far as I can tell the MPx midlength and the Kirk Magnum LTH are the only 2 specifically made for the Mag head. MPx makes a LTH too (not on their site) but I am not sure if it is for Mag or regular SOHC.

The MPx looks sweet but is shorter than I want but you can get it coated and with a high flow merge ($450 for everything!). For that price it better out flow the Kirk by A LOT. I will probably end up getting the Kirk and wrapping it and calling it a day.

quicksilvr · Post by **quicksilvr** » Mon Feb 18, 2008 3:33 pm

bone-yard-racing wrote:
kc2002acr wrote:yes, it will bolt up, BUT, you will not really be able to take advantage of the mag head because of an exhaust restriction. Like Adionik said, the exhaust ports on your mag head are larger than the exhaust ports on the standard head, which means your header ports are gonna be smaller, blocking out the flow. I think there is a picture somewhere of the mag head vs standard head exhaust ports....
Here you go:

This picture is very deceptive.

On the mag head, there are still exhaust stains from the anti-reversion action. On the non-mag, the stains have been removed. I took a comparo picture like that when I had both heads available...except in my pic, the non-mag still had stains, and the mag was clean. The ports looked almost the same size. Sorry, I couldn't help but notice, and I wanted to point it out.