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Nice work, looks great!
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ooooh Sexy!! i LIKE IT..
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That looks sweet man, can't wait to drive it https://www.nopistons.com/forums/pub...IR#>/boink.gif
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get rid of that screw clamp on the upper radiator hose, that plastic neck needs the factory clamp.
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[quote name='j9fd3s' date='Sep 6 2005, 09:54 AM']get rid of that screw clamp on the upper radiator hose, that plastic neck needs the factory clamp.
[snapback]755507[/snapback] [/quote] I don't have any extra factory style to replace those, thats what was on the car when it came to me. The price tag is already getting too steep on this job... |
WOW!!!!!! https://www.nopistons.com/forums/pub...IR#>/blink.png that thing is gorgeous!!!! https://www.nopistons.com/forums/pub...1047683894.gif what would be the price?? because i would definately have to find a way to scrape the money together because that is a awesome header..... major props to you
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Atleast $400. I will probably produce them with a thermal cermaic coating inside and out, and that may or may not raise the price. I don't really know yet.
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You could make the design give more power if you had the tube for rotor 1 exhaust come out straight for a greater distance than having it curve so soon
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I'm not a fan of ERW Tubing in this application
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That looks really good. Please post some dyno numbers of your header, and a racing beat header. I would be interested to see the end results with the straighter parts than the quick turn that the RB header has. Excellent job!
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Which clamp are we talking about?
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I Hate to be nit picky, but your RB header flange is backwards. Or at leasts thats what it looks like. All else looks good though.
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[quote name='1Revvin7' date='Sep 6 2005, 07:57 AM']I don't have any extra factory style to replace those, thats what was on the car when it came to me. The price tag is already getting too steep on this job...
[snapback]755519[/snapback] [/quote] i hear ya, screw clamps do weird things on there, hoses pop off and or tear. header looks nice too! |
[quote name='fc3s4utnv' date='Sep 6 2005, 07:51 PM']I Hate to be nit picky, but your RB header flange is backwards. Or at leasts thats what it looks like. All else looks good though.
[snapback]755706[/snapback] [/quote] lol...woops https://www.nopistons.com/forums/pub...1047683664.gif |
big deal
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beauty of a welding job!
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[quote name='fc3s4utnv' date='Sep 6 2005, 07:51 PM']I Hate to be nit picky, but your RB header flange is backwards. Or at leasts thats what it looks like. All else looks good though.
[snapback]755706[/snapback] [/quote] That was done for a reason, I actually cut that out this morning. I only used an RB flange, because it was handy. I have had my own flanges cut recently. If I do mass produce these, I have decided its going to be 304SS, ceramic coated inside and out, and it will mate to the stock cat. |
Looks good!
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[quote name='1Revvin7' date='Sep 7 2005, 12:00 AM']That was done for a reason, I actually cut that out this morning. I only used an RB flange, because it was handy. I have had my own flanges cut recently.
If I do mass produce these, I have decided its going to be 304SS, ceramic coated inside and out, and it will mate to the stock cat. [snapback]755789[/snapback] [/quote] There is absoluty NO advantage to using 304 stainless steel over mild steel if you plan on using ANY kind of coating. |
[quote name='moremazda' date='Sep 11 2005, 09:07 PM']There is absoluty NO advantage to using 304 stainless steel over mild steel if you plan on using ANY kind of coating.
[snapback]757478[/snapback] [/quote] that was what i was thinking. why use stainless and then coat it? kinda negates the use of stainless to begin with. kevin. |
You can run a thinner wall with stainless because its less likely to sag at the temps it will see than mild steel of the same thickness. Thinner wall = less weight.
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not bad, nice header though personally i think that rotaries were made to be boosted.
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[quote name='mazdaspeed7' date='Sep 13 2005, 12:16 AM']You can run a thinner wall with stainless because its less likely to sag at the temps it will see than mild steel of the same thickness. Thinner wall = less weight.
[snapback]758002[/snapback] [/quote] yea but if you coat the mild steel then the coating will absorb the heat and not the metal, isnt that the purpose? it prevents the heat from escaping by absorbing or blocking it, the heat that actually reaches the metal itself is lower temps by the time it hits raw metal past the coating. kevin. |
But the same would apply to coated mild steel. Stainless steel is more than just a prettier version of mild steel. Its more corrosion resistant, and it retains its mechanical properties better at high temp than mild steel.
The coatings help, but they help SS just as much as mild steel. Cost is the only reason I could see for not using SS. |
[quote name='mazdaspeed7' date='Sep 13 2005, 03:00 PM']But the same would apply to coated mild steel. Stainless steel is more than just a prettier version of mild steel. Its more corrosion resistant, and it retains its mechanical properties better at high temp than mild steel.
The coatings help, but they help SS just as much as mild steel. Cost is the only reason I could see for not using SS. [snapback]758196[/snapback] [/quote] https://www.nopistons.com/forums/pub...DIR#>/wink.png |
304 ceramic coated stainless sounds like an all around great product to me.
Why would anyone need to complain about a great product? |
[quote name='89 Rag' date='Sep 14 2005, 01:50 AM']304 ceramic coated stainless sounds like an all around great product to me.
Why would anyone need to complain about a great product? [snapback]758395[/snapback] [/quote] Thats what Im trying to figure out. But Id at least like to be able to read the RB flange after the header is installed https://www.nopistons.com/forums/pub...DIR#>/wink.png |
[quote name='mazdaspeed7' date='Sep 13 2005, 11:05 PM']Thats what Im trying to figure out. But Id at least like to be able to read the RB flange after the header is installed https://www.nopistons.com/forums/pub...DIR#>/wink.png
[snapback]758402[/snapback] [/quote] Can't really see it anyway, unless you're on a creeper under the car Prototypes are rarely perfect, by the time you make the 2nd and 3rd, it becomes a work of art. |
I guess the sarcasm was lost in the typing...
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[quote name='89 Rag' date='Sep 14 2005, 12:50 AM']304 ceramic coated stainless sounds like an all around great product to me.
Why would anyone need to complain about a great product? [snapback]758395[/snapback] [/quote] Good question.... |
304SS is a great metal, im not complaining about the lack of using mild steel.
Im trying to understand why if you coat mild steel it wont up its performance? basically everyone here is saying mild steel is utterly useless, even if coated? that my friend is ludicrous. yes i said it. ludicrous. kevin. |
[quote name='teknics' date='Sep 15 2005, 12:35 PM']304SS is a great metal, im not complaining about the lack of using mild steel.
Im trying to understand why if you coat mild steel it wont up its performance? basically everyone here is saying mild steel is utterly useless, even if coated? that my friend is ludicrous. yes i said it. ludicrous. kevin. [snapback]759132[/snapback] [/quote] It will up the performance, a little, but it's still heavy, so it's kind of a wash there. 304 by itsself is pretty damn good to start with... ceramic coated 304 is just the icing on the cake, imo. |
Im not saying mild steel is bad, just that SS is better. I fail to see where using using a material that better matches the intended use is a problem.
N/a rotaries run sky high EGT's. You cant wrap mild steel headers on a n/a because they will sag under their own weight at the temp they can reach. Stainless holds its strength through a higher temperature range than mild steel, so its better suited to a n/a header system. Turbos run considerably cooler EGT's, and mild steel(coated or not) has less problems with the heat. Coatings slow the rate of heat transfer, but over time, the part can still reach the same temperature as if it wasnt coated. That is why stainless steel is a better choice than coated mild steel in my mind. |
[quote name='mazdaspeed7' date='Sep 15 2005, 04:58 PM']Im not saying mild steel is bad, just that SS is better. I fail to see where using using a material that better matches the intended use is a problem.
N/a rotaries run sky high EGT's. You cant wrap mild steel headers on a n/a because they will sag under their own weight at the temp they can reach. Stainless holds its strength through a higher temperature range than mild steel, so its better suited to a n/a header system. Turbos run considerably cooler EGT's, and mild steel(coated or not) has less problems with the heat. Coatings slow the rate of heat transfer, but over time, the part can still reach the same temperature as if it wasnt coated. That is why stainless steel is a better choice than coated mild steel in my mind. [snapback]759200[/snapback] [/quote] See i agree that SS is better then mild steel, that wasn't my argument from the beginning. I have all 304SS tubing for my car right now, so its not like im saying mild is anywhere near the quality of 304SS. I was simply saying coated mild is still "decent" if you're on a budget, and definitely better then regular old mild. but if you have the resources, obviously coated 304SS would be awesome. maybe that clarifies my stance better? kevin. |
[quote name='teknics' date='Sep 15 2005, 06:07 PM']See i agree that SS is better then mild steel, that wasn't my argument from the beginning. I have all 304SS tubing for my car right now, so its not like im saying mild is anywhere near the quality of 304SS.
I was simply saying coated mild is still "decent" if you're on a budget, and definitely better then regular old mild. but if you have the resources, obviously coated 304SS would be awesome. maybe that clarifies my stance better? kevin. [snapback]759205[/snapback] [/quote] I dont think there will be a big price difference between mild steel and SS, maybe along the lines of $40-$50 if that much. Depending on the R&D put into it(anythign above making it fit), and the price, it could be a small enough difference in price to make mild steel not worth it. Not to mention the mild steel really should be coated, which would put it on par price-wise with uncoated SS, and the SS will hold up better. Im not tryign to make mild steel sound useless by any means, its just that the headers could very easily see temps at the upper limit of the usable range for mild steel. |
My racing beat header that had that chromeish coating (that seems to last on any other engine header) is totally gone from my engine's EGTs
I had a few tuning issues too where I had the header glowing, and whatever it was coated with totally fell apart and all the steel is exposed I can't just repaint the header the paint will fall apart.. I'd almost want to send my header to El for coating.. but for the shipping cost I'll bet I can buy one of these headers.. My only issue is, how far off is YOURs from the RB's flange mount area? |
colin- have you tried the eastwood exaust manifold coating?
I put it on my HKS log, but obviously I have not had a chance to see it in action |
i will look into that, thanks Rob
I have to do something, the header looks very ugly right now, half green from the burnt coating and half exposed steel WITH RUST FORMING. not cool. |
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