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Torn between the SBR cast manifold and their Tublar

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mitsuclipsegsx

15+ Year Contributor
2,561
8
Apr 5, 2004
Dover plains, New York
I researched but didn't find what i was looking for. Which one is better. The price is only 140 more so thats not a big deal. Do the tublars flow better. Does anyone have SBR tublar,is it the same as DNP.
This will be on a50 trim btw.
 
For a daily driver, I'd go with the cast manifold...if you have the money & it's not a daily driver though, go with the tubular

For me personally though, I'd just stick with cast no matter what...tubular manifolds really just 'look pretty'. A good cast mani can perform just as well as a tubular mani.
 
a_scobel said:
For a daily driver, I'd go with the cast manifold...if you have the money & it's not a daily driver though, go with the tubular.



Well you say if you had the money, like i said its only $140 more.
 
You don't need a tubular manifold for just a 50trim, stick with the cast. You can probably even find a used one in the classifieds rather easily. I got mine in there for $150 shipped.
 
a_scobel said:
For a daily driver, I'd go with the cast manifold...if you have the money & it's not a daily driver though, go with the tubular.
what difference would it make if it were a daily compared to a weekend that would change your choice of the manifold? why not just get the best one
 
Are you buying a new manifold simply for external wastegate provisions? If you are going to be running an internal gate still, your stock 2G will work just fine.

While tubulars typically flow a little better than their cast counterparts, their higher prices and the possibility of cracking usually steer some people away from them. It is up to you which one is better for your budget and needs.

Hope that helps.
 
Yeah they Crack rather easily under heavy use or daily driving, now if you only use it as a track car then you'll never see bumps on the road. Remember that the exhaust manifold its basically holding the majority of the turbo and downpipe weight (and they aren't light parts), and the rest of the exhaust for that matter, and obviously the Cast iron manifold its stronger, either way its always a great idea to bolt your downpipe back to the front part of the block like it came from the factory, but most of us when we upgrade downpipes and turbo decide not to do it.

Now when it comes to FLOW, well I don't think there's really a major difference of course the tubular manifols will flow a bit better but a well ported SBR cast manifold should spool up virtually any turbo just fine. In my honest opinion i rather that cast manifold since the runners are shorter (wich technically makes not much sense in spoolup difference but thats just my choice)
 
Tubular manifolds on a daily driver are not a good idea. You have three different types of metal typically. The runners, flange, and welds. Even if it is a true stainless manifold the welds all in different areas. So when they heat up and cool down they will expand and contract at different times and or tempratures. This will lead to cracking in the long run. As for spool the tubular will help you out. But for a daily driver I highly suggest a cast.
 
mitsuclipsegsx said:
I researched but didn't find what i was looking for. Which one is better. The price is only 140 more so thats not a big deal. Do the tublars flow better. Does anyone have SBR tublar,is it the same as DNP.
This will be on a50 trim btw.


1) The dnp & sbr manifold are the same.

2) The Tubular Manifold would flow better . And give the turbo better responce too.

3) The tubular manifold can be use on a daily driven car. You can get it ceramic coated also .

Make sure if you buy a tubular manifold it comes with a brace , from the runners to the turbo flange.

Thanks oj:D
 
poorboyracing said:
3) The tubular manifold can be use on a daily driven car. You can get it ceramic coated also .
Having it ceramic coated isn't going to stop the welds from cracking. If the welds are going to crack, they will do it.
 
I was talking to one of my buddies on here and he said he friend has tublar manfild on his DD eclipse. Been three years and no cracks,so i guess i am still not sure what to get.
 
I'm had both, the SBR ported cast and the SBR tubular.
granted I switched to external wastegate at the same time I did the tubular.

but the throttle response and spool and better than I had with the cast.
on my testdrive I remember bouncing the boost gauge from 0-10-0-10 like that.
it was an amazing site :thumb:
 
FourG63 97GST said:
I'm had both, the SBR ported cast and the SBR tubular.
granted I switched to external wastegate at the same time I did the tubular.

but the throttle response and spool and better than I had with the cast.
on my testdrive I remember bouncing the boost gauge from 0-10-0-10 like that.
it was an amazing site :thumb:


Yea i think i am going witht the tublar,i could see ebay ones cracking but i doubt sbr will crack, thanks for all the info.
 
My second DN Performance tubular has cracked but in all fairness to them I have a very heavy turbo, a Holset compressor and Bullseye turbine. I am looking for the best flowing cast manifold to replace the DNP. Is the new SBR at $299. a high flowing manifold? I once read where someone described the runners as huge but forgot what manifold this person was talking about. What about these $149. manifolds that are new around from various vendors? Thanks, mark
 
mitsuclipsegsx said:
Can't you just reweld where it cracked?

yes you can but you would need to take it off of the car to get it done right which can be a pain. Personally i don't think its worth the chance when the cast manifolds that they have now flow very well. The chance of a DD tubular manifold cracking is pretty high. I have a dn manifold right now that i have to reweld. I'm going to try to add another brace to it as well as adding a brace to the downpipe before the flex to try and take some of the weight off of the manifold.
 
a_scobel said:
For a daily driver, I'd go with the cast manifold...if you have the money & it's not a daily driver though, go with the tubular

For me personally though, I'd just stick with cast no matter what...tubular manifolds really just 'look pretty'. A good cast mani can perform just as well as a tubular mani.
LOL....
 
i PERSONALLY WOULD GO WITH THE SBR manifold if it was my decision, you get a nice strong cast piece that flows very well and still can be ported out for more flow, plus its already flanged for an external wastegate, it wont bend or crack under weight because its a heavy cast piece, the only way that sucker would crack is if you straight up take a carbide drill and hammer to it and start smacking away, tubular manifolds have an advantage with their long runners an all but their disadvantage is durability, unless you get one braced to shit, which still has c hances of welds cracking under weight. If replacing or reweld manifolds is really nto an issue with you jsut get a tubular then, if it is, get a sbr. And no, I do not work for sbr in any way :LOL:
 
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