7-AFE Custom 4-1 Headers, UPDATE WITH DYNO CHARTS!! 56K Warning Options

[94celicadude]

ok well here goes;

My dad and i have been wanting a correct 4-1 header for our 7-afe for a long time, we have finally gotten around to making one. We used the plate that attaches to the engine from a Aerospeed header, so yes that was salvaged for parts. Then we had a shop bend up some pipes, all equal length. To be precise they are 37" long and they are calculated to be the length for the best performance gain at peak power, so then it falls right back into the peak torque and off you go again. So anyways, after about 3 weeks of work here is the result. All the welding except for the tacks in the before pictures was done by me, and the wrapping of the system was done by my father and I. The collector was purchased from Pegasus Motorsports, and the rest of the pieces were purchased or salvaged from our old 4-2-1 headers. Sorry for the number of pictures but i figured people would like to see it in detail from many angles. I am hopefully going to finish installing it on mthe car this weekend, so if i get a hold of a camera with sound ill try to take a sound clip of it with just the headers, cuse i know it sounded badass before it was welded. ENJOY!!!!!








This post has been edited by 94celicadude: Aug 29, 2007 - 7:02 PM

[94celicadude]

i will also post a dyno sheet once the car is all back together and we get it to the dyno.

[Bitter]

it looks nice, like Rippmods longtube for the mitsu 4g64 that my friend has. that sucks that you had to dent in that one runner to clear the alternator...and how are you going to change the oil without dropping the header?

[n1ckz0r]

a good question that i am now facing.

[Bitter]

a good question that i am now facing.

with your ebay header (that is you right?) its no harder than with the stock manifold. theres plenty of room around the filter to get at it from the top with your left hand and a good glove. i use the cloth glove with a rubber hand area to grip at it, they work great and are only about $2 a pair.

[94celicadude]

we had it bent so the oil filter will just about sneak out with the headers on, off course once the car is cold too, but if that doesnt work then i will fit the remote oil filter kit that i have onto the engine. That will all be determined once i put it on this weekend. And yea it does suck that the far right runner had to be have a flat spot on it, but hey its better than any of those ebay headers you can get. Thx for the comments guys.

This post has been edited by 94celicadude: Oct 28, 2006 - 1:35 AM

[Bitter]

well you could have just thrown a 10-15 degree bend and cleared everything, its a shame those are crushbends tho. it'd be nice if you made a 2nd version with mandrel bend stainless steel.

honestly, the ebay header isnt bad at all, it looks like you have one on your car (in the signature) infact! its the same layout as stock 4age and 7afe headers are in other countries. same cylinder matching and same runner length, just stainless steel. same as the obx, megan, and several other 'brands', just the ebay ones cost $100 instead of $300. with my ebay header i have a NICE pull above 3500 rpm, 4000 rpm is great, and it pulls the whole way till it shifts, then i'm back around 4000 rpm with more pull once again.

This post has been edited by Bitter: Oct 28, 2006 - 1:43 AM

[ExSane]

well you could have just thrown a 10-15 degree bend and cleared everything, its a shame those are crushbends tho. it'd be nice if you made a 2nd version with mandrel bend stainless steel.

honestly, the ebay header isnt bad at all, it looks like you have one on your car (in the signature) infact! its the same layout as stock 4age and 7afe headers are in other countries. same cylinder matching and same runner length, just stainless steel. same as the obx, megan, and several other 'brands', just the ebay ones cost $100 instead of $300. with my ebay header i have a NICE pull above 3500 rpm, 4000 rpm is great, and it pulls the whole way till it shifts, then i'm back around 4000 rpm with more pull once again.

Tiag tiag los? I didn't know a header makes that much of a difference. I was gonna stick with stock for a while but then again there is that major restriction on exhaust flow. Just better throttle response? How about the gains? Do you feel any improvement in power besides response? Also, I was gonna go after 4-1 headers instead of 4-2-1 becuz of the exhaust flows better.

[pure_dx]

Tiag tiag los?

what nationality are you?

i have a 4-2-1 header, i wouldn't put a 4-1 header on our fe heads, 94celicadude, tell us how it goes

This post has been edited by pure_dx: Oct 30, 2006 - 1:14 PM

[Alex-UKSC]

looks ace, mine needs some heat wrap as the bay get sooooo hot

[ExSane]

Tiag tiag los?

what nationality are you?

I'm american.

[94celicadude]

Tiag tiag los?

what nationality are you?

i have a 4-2-1 header, i wouldn't put a 4-1 header on our fe heads, 94celicadude, tell us how it goes

yea sure will, ill post a dyno sheet of the numbers before w/the ebay headers and then with this one. dont know exactly when ill get it to the dyno, but i will post as soon as i have results, thanks again for comments.

[6gcSTVT]

Since you made a damn good looking header any interest in making more?

[94celicadude]

Since you made a damn good looking header any interest in making more?

well, i wouldnt mind, but you do have to realize that there is a LOT of time that went into this, so unless i set off to produce about 50 of these with mandrel bent stainless steel, it would be a rather expensive price because of all the time i have to personally put inot it. If you are really interested PM me and we can talk.

[ExSane]

OMG. I didn't recognize that one of the piping is bent in until I looked at this closer. It's bent becuz of the alternator? The alternator couldn't be that far over. I hope the results turn out great. I would love to mass produce my own designs and such but unfortunately I don't have the tools to do so.

[94celicadude]

OMG. I didn't recognize that one of the piping is bent in until I looked at this closer. It's bent becuz of the alternator? The alternator couldn't be that far over. I hope the results turn out great. I would love to mass produce my own designs and such but unfortunately I don't have the tools to do so.

well it is bent because of the A/C compressor, and i would have gotten rid of it but the car is a dd, so then i wouldnt have A/C in the summer, and MO heat is fing horrible , so thats why it had to stay on and the pipe had to be bent slightly. BTW just got the whole system can car back together, it sounds wicked and it also pulls a lot harder from 4-5500K rmp, thats what we were going for. For a 7-afe w/213k original miles, this little thing moves!...will update with some pics soon as i can.

[pure_dx]

^some dyno sheets too if ya dont mind

[94celicadude]

will put them up as soon as i get them.

[94celicadude]

sorry to bring this one back from the dead, but i thought id share a couple pics of the finished product. Its really dirty so please excuse that, but apart from that, the car runs great, and i can still do an oil change, i think i have about 1/32 of an inch left once the filter is unscrewed fully, but hell i dont need to dismantle the entire car just to do an oil change. The picture of the bottom side shows some of the wrap has been ripped...its because it does stick out below the crossmember a little bit, and also the car is lowered. Hope you enjoy, let me know what you all think.







This post has been edited by 94celicadude: Aug 29, 2007 - 7:04 PM

[Bitter]

what kind of gains does the butt dyno show?