Need help on wich Tubular manifold i can use on my car??

[hippy]

I want a go with a tubular exhaust manifold over the winter and i want a know if i can and if so what kind i can use?? My car is a 98 gsx with a 6 bolt motor and i have a t3/t4 61 trim, now the thing is i have a carbon viber invader style hood dont want the heat to screw my hood so ifi got one and wrapped the shit otu of it with header wray would i be ok?? ANd what style would be my best choice??? Thanks!!!

 

[dalatinromeo]

DN Performance makes great tubular exhaust manifolds!!

I wouldn't use header wrap, because I would think that it would keep more heat inside the runners of the manifold. Only to defeat the purpose of a tubular exhaust manifold, which is better cooling and better flow.

Oh by the way DN Performance makes T3/T4 tubular exhaust manifolds!!!

 

[1SloColt]

He is right that DNP makes great tubular manifolds but you might want to wrap it with header wrap cause I have seen them mess up the paint job on a hood or two because it gets hot and is so close to the hood, just a suggestion though.

 

[Victory]

Our new manifold is very high quality and should present no issues. Everything bolts in too using our O2 housing.

-Scott

 

[eclipse_20g]

If you run out of other options, I would try a small piece of heat insulation (the kind of insulation with a shiny surface on one side that comes stock on the underside of some hoods) and place a square of it on your hood where the manifold is to reflect some of the warmth.

 

[ian7321]

Does your hood have the vent on it? And if so does it actually open to the outside for a lil bit of cooling? Because thatn can help some, and getting some of the shiny whatever it is called hood insulation would help too.

 

[GVR4592]

Header wrap will kill a tubular manifold. I would do what eclipse_20g said and get a heat barrier/hoodliner. I believe Dynamat has something like that.

 

[BISHILVR]

DN Performance makes great tubular exhaust manifolds!!

I wouldn't use header wrap, because I would think that it would keep more heat inside the runners of the manifold. Only to defeat the purpose of a tubular exhaust manifold, which is better cooling and better flow.

Oh by the way DN Performance makes T3/T4 tubular exhaust manifolds!!!

Keeping heat IN the manifold is the idea of header wrap, it causes better flow.

 

[JDMFirstGen]

I wouldn't use header wrap, because I would think that it would keep more heat inside the runners of the manifold. Only to defeat the purpose of a tubular exhaust manifold, which is better cooling and better flow.

That is of the purpose of heat wrap/ceramic coating, to keep heat in them. Tubular manifolds are not meant to cool at all, they only offer better flow and smoother transitions.

If heat is escaping through the manifold, i.e. (your cooling effect), then the air inside has to slow down to transfer sensible heat through the metal by manner of convection. The 'slight' slowing of exhaust lowers efficiency. Heat wrap is meant to keep all heat in and improve efficiency. Which also lowers under hood temps and keeps you from burning yourself.

My SBR tubular manifold is wrapped and I recommend SBR mani's.

Don't talk about what you don't know.

 

[GVR4592]

There is no manifold manufacturer, to my knowledge, that will warranty a manifold if header wrap is used. Most manifolds are made from thin wall tubing so the heat can disspate quickly, otherwide they can crack. Stainless steel has a very low coefficient of thermal conductivity and does not need a header wrap to retain the heat inside the manifold.

 

[BISHILVR]

Any manifold not made of stainless for our cars are total junk anyway (tubular). The reason people want to use wrap on a tubular header on here is for lowering underhood temps and thats fine, even though it has other benefits in holding the heat in the header. You are right though, on a cheap steel header it can shorten the life of it.

 

[JDMFirstGen]

There is no manifold manufacturer, to my knowledge, that will warranty a manifold if header wrap is used. Most manifolds are made from thin wall tubing so the heat can disspate quickly, otherwide they can crack. Stainless steel has a very low coefficient of thermal conductivity and does not need a header wrap to retain the heat inside the manifold.

I will tell you if my manifold ever cracks, so far I have had no problems.

On a friends car with a similar setup, we did a test with a DVOM with an electric thermometer input. We taped the wire under the hood and drove the car. After wrapping the manifold we saw around a 20 degree drop in under-hood temp. This alone should show you that the manifold was definitely transferring heat.

 

[Stapl3]

Any manifold not made of stainless for our cars are total junk anyway (tubular).

Stop.





Heat powers the turbo, not the exhaust.

 

[hippy]

Ok yes i have teh Vis racing carbon fiber INVADER style sticks up in the middle has a big vent to let heat out but still dont wanta take a chance in gettting my hood schorched!! So wha is a good choice i see 800 + hp cars out there any they all use header wrap???? Anyways like to get one that dosent stick up towards the hood to high!!

 

[BISHILVR]

Stop.





Heat powers the turbo, not the exhaust.

YOU STOP!!!....you do not know what you are talking about.

 

[Stapl3]

Rather than owning you with pictures of amazing schedule 40 steel 4g63 manifolds people have made, fill us in as to why anything but stainless steel is "total junk".

 

[qwklil4]

Probably because most, if not all, tubular manifolds made by reputable companies are made from stainless. Pacesetter, anyone?

Alien auto makes a good manifold

 

[suicidal2af]

Stop.





Heat powers the turbo, not the exhaust.

Really?

So if I pop my turbo in the oven, how fast will it spool?

 

[JwUoNoG]

Stop.





Heat powers the turbo, not the exhaust.

Stop.

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

 

[BISHILVR]

Some people, wow, just wow!!! I guess some do slip through the cracks after all.

 

[BISHILVR]

Probably because most, if not all, tubular manifolds made by reputable companies are made from stainless. Pacesetter, anyone?

Alien auto makes a good manifold

Yeah, lets all go get pacesetter, maybe we can get a group buy going. As far as regular manifolds go there is no problem with plain old cast steel, once you go to a tubular header though, stainless has been the one proven to work the best and live the longest (if its a good quality build that is).

 

[larsrya8]

...then the air inside has to slow down to transfer sensible heat through the metal by manner of confection.

Don't talk about what you don't know.

Yum... I could use a tasty confection right about now.

 

[BISHILVR]

Yum... I could use a tasty confection right about now.

Go see leet. Yes, the spelling is not pefect sometimes but i've seen worse.

 

[Stapl3]

Really?

So if I pop my turbo in the oven, how fast will it spool?

Jump in there with it. Bring a Corky Bell book with you. Maybe you could learn some turbocharger fundamentals.

 

[Stapl3]

once you go to a tubular header though, stainless has been the one proven to work the best and live the longest (if its a good quality build that is).

You guys are getting hung up on ssautocrhome/obx/pacesetter crap. The reason for these manifolds failing is the material thickness and welds, not because it's not stainless. Stainless is used because it looks better and rejects heat more, so it keeps heat in better. A non stainless tubular manifold heat wrapped is by no means garbage so long as it's thick enough, designed properly, and welded well.