My newest manifold

[redline6k]

Started working on my new manifold. I was gonna go with a 2g manifold and bep housing, But I decided since I had all the materials on hand I would make one. It's almost done, I just have to save up for a 2nd Tial MV-S wastegate. The manifold is a twin scroll T4. The turbo is a Holset HX-40. Let me know what you think.

You must be logged in to view this image or video.

You must be logged in to view this image or video.

You must be logged in to view this image or video.

You must be logged in to view this image or video.

 

[95blackGsTurbo]

I'll take 2!

 

[TRSblader]

Wow that looks incredible. I would think it was name brand if I had seen this for sale somewhere

 

[Imback]

I don't see the bead going into the collector? Some close up's would be nice. But from the fabrication stand point it looks good sch 10? also what thickness flange and are you back purging?

 

[boosted240]

Looks good. What kind of welder?

 

[Natedsmeclipse]

looks good cant wait to see it with the wastgates.

 

[awdmonster1904]

only one word to describe it ......ART

 

[redline6k]

I don't see the bead going into the collector? Some close up's would be nice. But from the fabrication stand point it looks good sch 10? also what thickness flange and are you back purging?

You probably can't see the bead because I have already cut the wholes for the collector. Sorry I don't have any closeups. The flanges are 1/2" thick. Yes it was backpurged.

Looks good. What kind of welder?

Jasic Inverter Welder

 

[ratatack]

looks really good how long did it take you

 

[redline6k]

looks really good how long did it take you

I think it was around 12 hours.

 

[noonan98turbo]

That looks badass...You should totally make one for me

 

[Slippi84]

Looks good. That one runner comes up a little too high for my taste but real nice work man.

 

[slowgsr]

I think the turbo should sit a little furthur towards the drivers side, and you should run a forward facing OFH, as well as relocated the alt (incase 4" DP clearance). I do understand this is for YOUR turbo, but to run a larger frame turbo, its nice to have the clearance around the front mount.

Nice job.

I can't tell, but keep that dipstick inlet plugged up, you wouldn't want any suprises falling in there . It would be good to raindrop the inlets to the wastegates as well.

 

[DSMunknown]

Waiting to see the O2 Housing.

 

[redline6k]

I think the turbo should sit a little furthur towards the drivers side, and you should run a forward facing OFH, as well as relocated the alt (incase 4" DP clearance). I do understand this is for YOUR turbo, but to run a larger frame turbo, its nice to have the clearance around the front mount.

Nice job.

I can't tell, but keep that dipstick inlet plugged up, you wouldn't want any suprises falling in there . It would be good to raindrop the inlets to the wastegates as well.

I tailored it to my specs. I don't plan on running a bigger turbo. There's no oil pan on there for that reason .

Waiting to see the O2 Housing.

Its getting a downpipe/o2 housing all in one.

 

[1sttimedsmr]

How about a top mount manifold? Do you think you can build one? and for how much? I am pretty sure I am not the only one interested in one.

 

[jacobevan611]

Wow that looks incredible. I would think it was name brand if I had seen this for sale somewhere

+1 for sure.

 

[KazooGS-T]

Started working on my new manifold. I was gonna go with a 2g manifold and bep housing, But I decided since I had all the materials on hand I would make one. It's almost done, I just have to save up for a 2nd Tial MV-S wastegate. The manifold is a twin scroll T4. The turbo is a Holset HX-40. Let me know what you think.

You have the exhaust runners setup improperly for it to be twin-scroll.

It should be runners 1&4 and 2&3 merged into each section, separated along the divided flange. You have 1&3 and 2&4.

Other than that, looks good!

 

[constant_proj21]

You have the exhaust runners setup improperly for it to be twin-scroll.

It should be runners 1&4 and 2&3 merged into each section, separated along the divided flange. You have 1&3 and 2&4.

Other than that, looks good!

Looks to me, that he's got it right (1&4 and 2&3). Looking at the pics, 2&3 is on the left, 1&4 go to the right.

By the way, great looking manifold!! Wanna make me a t3 version?

 

[DSM nOOb]

he's got it right. looks pretty nice. +1 for close up pics. How's your inside penetration?

 

[endeffect0]

How's your inside penetration?

thats what she said! ZING->


the manifold looks great man. I cant wait to see this in an engine-bay.

I too would like to see the top runner come down a bit. But that wouldn't stop me from stealing it off your block faster than a poorly thought out racial joke.

If you were to ceramic coat this i would be trying to find your house on google earth .

 

[KazooGS-T]

Looks to me, that he's got it right (1&4 and 2&3). Looking at the pics, 2&3 is on the left, 1&4 go to the right.

By the way, great looking manifold!! Wanna make me a t3 version?

I guess he does, the pictures were a bit misleading and it was late last night. The #3 and #4 runners looping down, under, and around threw me off. I still didn't see it for a couple of seconds, until I looked at the #3 & #4 closer.

 

[nek]

This question should probably be posted in the newb section, but what is the benefit/ point of making a manifold so complicated with the pipes twisted around each other while the 2g manifold is so basic and straight forward. Beautiful work, Im just a little uneducated. Im sure it has to do with heat transfer and airflow but facts are helpful.

 

[KazooGS-T]

This question should probably be posted in the newb section, but what is the benefit/ point of making a manifold so complicated with the pipes twisted around each other while the 2g manifold is so basic and straight forward. Beautiful work, Im just a little uneducated. Im sure it has to do with heat transfer and airflow but facts are helpful.

One of the biggest reasons is that he is running a T4 turbocharger, with twin external wastegates.

There is a much more in-depth explanation, but I don't feel like doing a detailed write-up about about the benefits of a twin-scroll manifold.

 

[endeffect0]

nek: I would encourage you to find this information from various resources available on-line, in addition to this site as anything posted here will in regards to exhaust tech will be limited in scope. i will try to simplify some of the reasons his manifold looks like this.

exhaust manifold design depends on a lot of things. most of which i will ignore. . basically put the cast manifold that came on our cars is restrictive; meaning that its internal diameter is insufficient for the total amount of gas that it will be flowing, (in his case much grater than stock!) and is also restrictive in the sense that the shape and bends of each runner (between a single exhaust port on the head to the turbo) is not ideal. so in both size and design the stock manifold is not optimum. though you could port it or go with a cast manifold of a better design you will still not get as close as you could to an optimum design.

consider this: the ideal setup for flow would be each runner coming out in the same size as the exhaust port and running strait out of the head parallel to the ground with each tube being the same length and traveling in a nearly strait line coming together right at the turbo flange.
the reason you would want each pipe to be the same length is to deliver the pulses of exhaust gas from each cylinder spaced out evenly. and the reason you would like to keep them divided as long as possible (aside from total volume and other considerations) is because this delivers each pulse of gas directly to the turbo without it being affected by whats going on in the other runners. aka equal length headers/manifold

sadly we cant run our turbos sticking 2 feet strait in front of the head so we compromise and make as gentle bends as possible while tucking the turbo right to the block.

also to consider with his manifold is that the turbo he is using is a twin scroll which matters because it uses a divided flange, so you need to consider the timing gap between pairs of cylinders. you would not want two pulses back to back, then skip two on each side of the flange. so instead you have to pair the cylinders so that each side gets every other pulse. that complicates the piping because you now have to jump over other runners to get the correct paring of the cylinders on each side of the block.
and he still need to fit in two waistgates!

depending on his design he may or may not have chosen to go with equal length, or possibly designed it to be unequal length and still deliver the pulses in the same timing. or likely not bothered with that at all. of course there is also runner diameter and length that have an effect as well as many other factors.

point is, its complicated stuff. if it interests you, and i would guess it does if your asking questions, i could point you in the direction of some good, practical and through information on the interwebs... so feel free to PM.