Manifold of Choice

Information on the naturally-aspirated KA24E and KA24DE engines.
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S-14boy
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Im getting ready to start peicing together a turbo kit for my KA and I am looking at manifolds right now, but I really have no idea were to get it from, Ive tried searching past threads but couldnt find anything. I was originally looking at the RevHard Manifold but then I started lookin and found some other ones. I oringinally wanted cast because all the Nsport kit and XS kit come with em and they say there stronger. Im just curious as what everyone else has and how they like it.


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S-14boy
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I saw the Turbo Boss one, It looks cool but does anyone have it and like it??

walsnart
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Yeah... I was wondering about the Turbo Boss manifold too.

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#1 Stunna
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I have the Rev Hard for my 95 240sx but have not installed it yet. I am going to separate the runners before anything as well as enlarging the outer bolt holes for expansion, because of the cracking I have heard of. Here are some pics of it. Thank you.

Ivan


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SonicS14
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what size turbo is the turbo boss sized for? does anyone have any opinions on this manifold?

U12 2NR
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If I were you, I would leave the runners the way they are. The more material that is on the head flange means that more heat can safely be dispersed throughout. If you seperate the runners, there's less materal to absorb heat, so each runner will get signifigantly more hot, which greatly increases the chances of warping.

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C-Kwik
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U12 2NR wrote:If I were you, I would leave the runners the way they are. The more material that is on the head flange means that more heat can safely be dispersed throughout. If you seperate the runners, there's less materal to absorb heat, so each runner will get signifigantly more hot, which greatly increases the chances of warping.


#1, you don't actually want the manifold to absorb more heat. The more heat that gets to the turbo, the better.

#2, even if heat dispersion was an issue, creating relief for expansion will serve a far greater purpose for manifold durability than the small heat absorbtion benefits you would receive. You would only need to remove a small amount of material anyways.

encasemyheart
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U12 2NR wrote:If I were you, I would leave the runners the way they are. The more material that is on the head flange means that more heat can safely be dispersed throughout. If you seperate the runners, there's less materal to absorb heat, so each runner will get signifigantly more hot, which greatly increases the chances of warping.


Well, most people that I have seen don't take too much material, just cut it between the runners so it doesn't crack as easily upon expansion. Even so, there is really no point for the manifold to absorb heat. It is MUCH more beneficial to cut between the runners than to not, assuming there was a benefit to not cutting it.

And good idea with enlarging your bolt holes, someone has been reading their corky bell. ;)

epic
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In reference to the Turbo Boss- They sell the manifold on their website for $800 but the highest bid the last one went for on Ebay was $255!!

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S-14boy
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Are the RevHards known for cracking?????????

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C-Kwik
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S-14boy wrote:Are the RevHards known for cracking?????????


Yes, but if you drill out the holes for the head studs and separate the flange so that there is a flange for each runner, then it should considerably reduce the chances of cracking. Revhard makes no provisions to allow for any heat expansion. It's a rather cheap and easy fix.

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voltron
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I don't know anything about this manifold but it gets my vote in the looks department. I am 90% sure this is the manifold I will order when it comes time. All I need to finish my KAT is a manifold, JWT ECU/injectors, and the fabrication of the charge pipes and down pipe.

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S-14boy
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That looks sweet, tell us how you like it when you get it. Nice mods too, lmao.

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voltron
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I don't know how soon I would actually order that manifold. When it comes time I might stumble accross a cheep used revhard or something. I am seriously considering a Kazz LSD right now, so after instalation it would set me back about the same as a JWT + injectors set up would cost. That would really take some time to recover from. But then again, I saw a turbo Integra the other day that reminded me of my turbo lust!

kevdog240
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i havent heard many people talk about the unstable manifold. from looking at the pics it is my choice right now......

http://www.unstable-hybrids.com/UHProducts.htm

TARs14
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http://www.executivecleancar.c...d.htm

This one would be my choice. Of coarse I'm biased.

Two left I need to sell.

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S-14boy
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TARs14 that looks bada$s, how much you askin for the other ones you have left.

TARs14
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$625

SloS13
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damn thats nice

KApwr
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TARs14 wrote:http://www.executivecleancar.c...d.htm

This one would be my choice. Of coarse I'm biased.

Two left I need to sell.


This is the only one to get if you want reliability and performance and if you don't know then you better ask somebody!!! I've had the manifold in my lil' hands and you betta get one before they're gone and maybe for good. Or you could wait until I put out 600+whp on my KA and then ask me where I got the manifold and I'll say Tom Rice but he doesn't make them anymore but you had your chance:pface Of course, i'm unbiased. John

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sk8erguy1501
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How much would one of these new high performance manifolds run you? I would like one for my car but i got no $$, besides the fact that they're dam expensive.

TARs14
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They're still $625.

Tom

cpuls
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I strongly advise you to cut the runners and enlarge the holes if you have a Rev Hard. I did not heed this advice and now I have both a warped and a cracked Rev Hard.

cpuls
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I strongly advise you to cut the runners and enlarge the holes if you have a Rev Hard. I did not heed this advice and now I have both a warped and a cracked Rev Hard.

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C-Kwik
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wow...I think someone actually used the search button. talk about back from the dead. But this does bring up a good point since I had just installed a new one myself. Notice in the above pictures, the ports are round. The KA24DE exhaust ports are square. They are also not lined up very well. In top mount configuration, the manifold's ports sit higher than the head's ports. I think revhard just centered the holes between the two bolts. Though if you compare a gasket to it, you'll find that the hole lines up differently if you flip the gasket.

I would have bought one of Tom's manifolds(I've been admiring them for some time now), but it was totally short notice. The crack was fatal as it went through the wastegate flange. Too much work and uncertainty to try and fix. Tom, you should premake some. You might get a few more sold from buyers who need them quickly. In other words for those who crack their revhards.

Structure240sx
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does anyone have a number to get in touch with tom rice? i emailed him yesterday about his manifold. i was gointo buy one a couple months ago but isntead order the nsport kit but now would like to replace the revhard with his. hopefully he will make some more. anyone know if he is?

cpuls
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Tom - let me know if you still have any left or can make any more.

thanks,-Carsten

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LT_Z
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Yes , Tom im in deseperate need of your superior manifold also, with a t4 flange ! ........please tell me you have one for me :)

SingleCamSam
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Larry man, email me if you still want the steering wheel etc. You spaced on me lol.

JustinM
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That unstable hybrids manifold??? Stay away...never seen one though it looks like sloppy piece of sh*t. Justin


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