well i was adding to the other thread on the diy el manifold, but then i realisied this is not an el mani , lol so i decided to make my own post on my manifold, the manifold has a 3'' long collector and short runners so i hope it helps spool my big turbo , and here are some pics of fitment on the car , so let me know what you guys think

 

That's freaken awesome, is that stainless steel? I'm tired of nasty looking mild steel manifolds, I want something like that. I like the vent system too, how is it routed?

 

Looks sweet.

 

it is all 304 stainless except for the flanges, and the valve cover vents all connect to there own breather tank ,

 

damn thats nice

 

nice fab work

 

I'm not trying to be critical, as just doing what you have is more than most will ever do, so don't take my advice as a bad thing.

If you weld with more heat, the welds will look better. I can tell that on the largest weld, you were really cold and just washing over it to smooth it out. Your puddle probably was no more than 1/8" diameter...which won't flow very well with metals this thick. This lack of heat causes the trash in the puddle to be left behind a lot, rather than carried along with the puddle. That's why you have all kinds of little bits of trash (dross) left on the top of the weld.

In time you will get better at the welding, but the header looks good.

 

iam allways open to good advice and expecaliy from you , i have seen your work and it is , so now you say to use more heat like how much in amperage are we talking ?? cus when i was messing around and welding some other stuff the welds where all dark and where over cooked , so if you could pm me some tips that would be great

 

Please post the information as I am having trouble with mine getting dark and overcooked but with less heat I cant get a good puddle on the flange. I am using about 90 amps, 3/32, 15 on the gas.

 

I have contradicting thoughts on this manifold.

One thought is that the way its setup you have two shorts and two longs paired so that they will fire long+short then long+short, thus causing the short to spool the turbo slightly faster but still getting extra volume in the other runner offering that bigger top end. Now that sounds like a dandy idea, but then i think what about the heat pulses conflicting with eachother causing some disturbances in the exhaust stream. Im far from an engineer but those are just my thoughts on the design.

Most likely what i would have done was pair runners 1 and 4 with the front part of the collector and 2+3 with the back part(similar to SSAC)....Im not sure which would be best. i hope to see some dyno plots!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by fatvat &raquo;</TD></TR><TR><TD CLASS="quote">I have contradicting thoughts on this manifold.

One thought is that the way its setup you have two shorts and two longs paired so that they will fire long+short then long+short, thus causing the short to spool the turbo slightly faster but still getting extra volume in the other runner offering that bigger top end. Now that sounds like a dandy idea, but then i think what about the heat pulses conflicting with eachother causing some disturbances in the exhaust stream. Im far from an engineer but those are just my thoughts on the design.

Most likely what i would have done was pair runners 1 and 4 with the front part of the collector and 2+3 with the back part(similar to SSAC)....Im not sure which would be best. i hope to see some dyno plots!</TD></TR></TABLE>

take a closer look it is paired like you said, and i think it should perform good , just take a look at the rams horn style , they are not = in length at all and are paired the same way , my runners are just shorter,

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 30psiCiv &raquo;</TD></TR><TR><TD CLASS="quote">Please post the information as I am having trouble with mine getting dark and overcooked but with less heat I cant get a good puddle on the flange. I am using about 90 amps, 3/32, 15 on the gas.</TD></TR></TABLE>

well this is what i do , first if you are going to weld stainless or want realy good gas coverage you should use a gas lense on your torch like the one in the pic , and i use 1/16 red (2%) tungsten , and when you set your amperage , play around on some scrap , and you will find what works best , it takes time to tig weld this stuff so just take your time and let the puddle build , it takes some practice to get it just right , i have ben doing it for like almost a year and iam still learning , Engloid's stuff looks awsome and he has ben giving me some tips so iam going to apply them here in the next day or so and see how i do , and if you have any ?'s feel free to pm me

 

where's the waste gate going???

 

our points of reference are different. your front=my back, my back=your front. If you think about it, it would have even'd the runners a little more, but who even knows if thats best? Hell if i do.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by chad &raquo;</TD></TR><TR><TD CLASS="quote">where's the waste gate going???</TD></TR></TABLE>,

yeah i didnt mention that yet , it is going to go on the same side as the downpipe , there is a lot of room right there so it should work good ,

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by fatvat &raquo;</TD></TR><TR><TD CLASS="quote">our points of reference are different. your front=my back, my back=your front. If you think about it, it would have even'd the runners a little more, but who even knows if thats best? Hell if i do.</TD></TR></TABLE>

i see , lol i just did it that way cus it was easy and most all the other manis are like that and they make good power, but any way we will se how it does this spring on the dyno

 

looks good man...you wernt kidding when you said the turbo was going to sit low! curious to see the oil return. mounting the turbo that low makes it look tiny in the engine bay...the way im going to mount my turbo when i pop the hood TURBO is all your going to see. UPS screwed up my order from precision and sent back my turbo and intercooler....and mcmaster sent me 1.25 diameter tubing instead of 1.5.....today was such a great day!! haha

 

man that sucks bro but you can see in the last pic where it is from the front of the car, you can see the drain on the turbo and the bung on the pan , there is about an inch drop so i will be fine, but man i hope all that stuff works out for you , and good luck on your fabing and remember pics !!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B18C1CYA &raquo;</TD></TR><TR><TD CLASS="quote">

well this is what i do , first if you are going to weld stainless or want realy good gas coverage you should use a gas lense on your torch like the one in the pic , and i use 1/16 red (2%) tungsten , and when you set your amperage , play around on some scrap , and you will find what works best , it takes time to tig weld this stuff so just take your time and let the puddle build , it takes some practice to get it just right , i have ben doing it for like almost a year and iam still learning , Engloid's stuff looks awsome and he has ben giving me some tips so iam going to apply them here in the next day or so and see how i do , and if you have any ?'s feel free to pm me

</TD></TR></TABLE>

Looks like you could use a little more extension there. I usually like to have the tungsten extended about half of the cup diameter. Nice torch

 

very nice. so what class r u going to be running the car in? how much whp do plan on? i'm trying to come up with something crazy on the new mani. it just seems like every design is out there.

 

well i dont know what class the car will be in but it is mostly a local track car , and i am hoping for 550+ whp, i have almost every other part to make the power,

 

looks good!

 

very nice

 

bump for a good guy and a clean looking mani
hopefully helping out the the dsm guys soon as well

 

thanks guys for all of the + input