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Looking for a little re-assurance/info on manifold design (non-honda/non 4cyl)
Basically this is what I am building.
I am going to build a manifold for a Jeep 4.0L Inline 6. My idea, once i get hold of some flanges, is to run 3 cylinders into one collector and 3 into another collector, then have the two merge near the turbo flange. This basically creates a 6-2-1 design. I don't terribly care too much about equal lengths and making the perfect manifold, I do however want to shy away from half assing the job. So here is the deal. Firing Order details http://www.geocities.com/cantwait_fo...ring_order.jpg Basically I am wondering how I should order the cylinders into the collectors. Should I alternate? Kinda like this Cylinder 1 to collector 1 Cylinder 5 to collector 2 Cylinder 3 to collector 1 Cylinder 6 to collector 2 Cylinder 2 to collector 1 Cylinder 4 to collector 2 Is this the way I should run em to evenly distribute the firing into each of the two paths, or should I try something different? |
Re: Looking for a little re-assurance/info on manifold design (non-honda/non 4cyl)
if u can make a 6-1 collector ur a master :-X
then u would just have to route the pipes in 1 place or just go simple and make a log u cant go wrong with a log cant u modify the original header? |
Re: Looking for a little re-assurance/info on manifold design (non-honda/non 4cy
i just stared at that for a little while and now my brain hurts.
Just keep it simple and make a log. Or a twin turbo setup might be easier too |
Re: Looking for a little re-assurance/info on manifold design (non-honda/non 4cy
Originally Posted by Ravage70
if u can make a 6-1 collector ur a master :-X
then u would just have to route the pipes in 1 place or just go simple and make a log u cant go wrong with a log cant u modify the original header?
Originally Posted by gurusan
i just stared at that for a little while and now my brain hurts.
Just keep it simple and make a log. Or a twin turbo setup might be easier too and no you cant use a log. |
Re: Looking for a little re-assurance/info on manifold design (non-honda/non 4cy
I think you normally don't skip cylinders.
Cylinder 1 to collector 1 Cylinder 5 to collector 1 Cylinder 3 to collector 2 Cylinder 6 to collector 2 Cylinder 2 to collector 1 Cylinder 4 to collector 1 Like on hondas when the firing order is 1,3,4,2...you usually have 1 and 3 paired, and 4 and 2 paired. |
Re: Looking for a little re-assurance/info on manifold design (non-honda/non 4cy
Originally Posted by gurusan
I think you normally don't skip cylinders.
Cylinder 1 to collector 1 Cylinder 5 to collector 1 Cylinder 3 to collector 2 Cylinder 6 to collector 2 Cylinder 2 to collector 1 Cylinder 4 to collector 1 Like on hondas when the firing order is 1,3,4,2...you usually have 1 and 3 paired, and 4 and 2 paired. and if i was him i will make it like originally posted... to keep a pressure balance within the manifold and avoid reversion since turbo manifold usually see 4x the pressure u are compressing into the intake |
Re: Looking for a little re-assurance/info on manifold design (non-honda/non 4cy
yeah that was kind of my concensus on it too...evenly distribute the pulses.
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Re: Looking for a little re-assurance/info on manifold design (non-honda/non 4cy
Originally Posted by gurusan
I think you normally don't skip cylinders.
Cylinder 1 to collector 1 Cylinder 5 to collector 1 Cylinder 3 to collector 2 Cylinder 6 to collector 2 Cylinder 2 to collector 1 Cylinder 4 to collector 1 Like on hondas when the firing order is 1,3,4,2...you usually have 1 and 3 paired, and 4 and 2 paired. |
Re: Looking for a little re-assurance/info on manifold design (non-honda/non 4cy
Originally Posted by shoeboxbeater
this would be 4 cilinders to colector 1 and 2 to colector 2
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Re: Looking for a little re-assurance/info on manifold design (non-honda/non 4cy
Originally Posted by FooK
Is this the way I should run em to evenly distribute the firing into each of the two paths, or should I try something different? |
Re: Looking for a little re-assurance/info on manifold design (non-honda/non 4cyl)
Alternate them between the two collectors.
If you have a nice 2-1 merge, it will even out all the stresses nicely. |
Re: Looking for a little re-assurance/info on manifold design (non-honda/non 4cyl)
We have a wrangler with that 4.0. I would just cut the exhaust pipe after it crosses under the motor and add another bend to position the turbo by the battery. That would be 6 into 2 into 1. That 4.0 is just begging for a turbo.
Erich |
Re: Looking for a little re-assurance/info on manifold design (non-honda/non 4cyl)
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Re: Looking for a little re-assurance/info on manifold design (non-honda/non 4cy
Originally Posted by BLACKSI
full race did a cool supra design
the other thing is that the turbo manifold im making has to wrap under the motor and locate the turbo on the other side, so its kinda like a big U shape wrapping under he oil pan.
Originally Posted by Erich
We have a wrangler with that 4.0. I would just cut the exhaust pipe after it crosses under the motor and add another bend to position the turbo by the battery. That would be 6 into 2 into 1. That 4.0 is just begging for a turbo.
Erich I do not wish to re-use the stock manifold because they are very prone to breaking and I want to do my own complete turbo manifold trust me ive got this pretty well thought out as far as what i want to do. |
Re: Looking for a little re-assurance/info on manifold design (non-honda/non 4cy
woah that full race one is sick.
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Re: Looking for a little re-assurance/info on manifold design (non-honda/non 4cyl)
I don't know about your budget, but Borla makes a nice 6-1 exhaust header with full exhaust. You could easily add a turbo flange to that header and modifiy the rest so then you would have a nice turbo manifold and a decent exhaust.
http://img352.imageshack.us/my.php?i...rade01z2mh.jpg |
Re: Looking for a little re-assurance/info on manifold design (non-honda/non 4cy
Originally Posted by MADMAX
I don't know about your budget, but Borla makes a nice 6-1 exhaust header with full exhaust. You could easily add a turbo flange to that header and modifiy the rest so then you would have a nice turbo manifold and a decent exhaust.
http://img352.imageshack.us/my.php?i...rade01z2mh.jpg [/quote That's for an inline 6 though? ??? |
Re: Looking for a little re-assurance/info on manifold design (non-honda/non 4cyl)
Bro this IS FOR an inline 6. Jeep 4.0 is an inline 6 and he even stated it in his original post. :1
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Re: Looking for a little re-assurance/info on manifold design (non-honda/non 4cy
Originally Posted by MADMAX
Bro this IS FOR an inline 6. Jeep 4.0 is an inline 6 and he even stated it in his original post. :1
I think i'm just going to back out and lurk in this one. :p |
Re: Looking for a little re-assurance/info on manifold design (non-honda/non 4cy
Originally Posted by gurusan
wow i was retarded twice in this post.
I think i'm just going to back out and lurk in this one. :p |
Re: Looking for a little re-assurance/info on manifold design (non-honda/non 4cyl)
Originally Posted by FooK
Basically this is what I am building.
I am going to build a manifold for a Jeep 4.0L Inline 6. My idea, once i get hold of some flanges, is to run 3 cylinders into one collector and 3 into another collector, then have the two merge near the turbo flange. This basically creates a 6-2-1 design. I don't terribly care too much about equal lengths and making the perfect manifold, I do however want to shy away from half assing the job. So here is the deal. Firing Order details http://www.geocities.com/cantwait_fo...ring_order.jpg Basically I am wondering how I should order the cylinders into the collectors. Should I alternate? Kinda like this Cylinder 1 to collector 1 Cylinder 5 to collector 2 Cylinder 3 to collector 1 Cylinder 6 to collector 2 Cylinder 2 to collector 1 Cylinder 4 to collector 2 Is this the way I should run em to evenly distribute the firing into each of the two paths, or should I try something different? All though looking at the diagram of the dist, I would really want to do a 6-1 collector with the runners entering the collector exactly like the pic .... give it a nice swirley scavenging pimpness quality.... but 6-1 would be a pain, and I really doubt there would be a difference that would justify the extra work. Either way, good luck!!! |
Re: Looking for a little re-assurance/info on manifold design (non-honda/non 4cy
im just going to basically ignore the other ideas in this thread at this point...
6-1 isnt happening, im not running 6 pipes all the way under the motor and back up sounds like i got my answer anyways. this is basically what im doing, mickey mouse drawing |
Re: Looking for a little re-assurance/info on manifold design (non-honda/non 4cy
The intake and exhaust are on the same side of the head? What am I missing here...
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Re: Looking for a little re-assurance/info on manifold design (non-honda/non 4cy
Originally Posted by jagojon3
The intake and exhaust are on the same side of the head? What am I missing here...
the intake and exhaust ports both exit the left side of the head. |
Re: Looking for a little re-assurance/info on manifold design (non-honda/non 4cyl)
Of course the intake and exhaust are on the same side of the motor! It IS a Jeep motor ;). It is also push rod and they make major valve train noise even new. Stuff on our 95 wrangler, you would have to go back to the 60s to find on other vehicles. Those motors are really reliable.
Erich |
Re: Looking for a little re-assurance/info on manifold design (non-honda/non 4cyl)
oh ----!! Jason going to make his own manifolds now.. crazy ----?? wanna try and make a ramhorn for my car after you're done? lol crazy project dude. cant wait to see it done. good luck.
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Re: Looking for a little re-assurance/info on manifold design (non-honda/non 4cy
Originally Posted by FooK
Originally Posted by jagojon3
The intake and exhaust are on the same side of the head? What am I missing here...
the intake and exhaust ports both exit the left side of the head. |
Re: Looking for a little re-assurance/info on manifold design (non-honda/non 4cyl)
Originally Posted by jdm_racer
oh ----!! Jason going to make his own manifolds now.. crazy ----?? wanna try and make a ramhorn for my car after you're done? lol crazy project dude. cant wait to see it done. good luck.
and i have no desire to make a ramhorn anything....lol
Originally Posted by Weq
thats some f*cked up ---- right there..
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Re: Looking for a little re-assurance/info on manifold design (non-honda/non 4cyl)
505 style. Done. Quick and easy. Its tried and true Fookie. If I boost the XJ that the route I'm going.
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Re: Looking for a little re-assurance/info on manifold design (non-honda/non 4cyl)
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Re: Looking for a little re-assurance/info on manifold design (non-honda/non 4cyl)
Originally Posted by CSaddict
505 style. Done. Quick and easy. Its tried and true Fookie. If I boost the XJ that the route I'm going.
if i wanted to do a kit just like 505's, id just buy 505's |
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