304 ss compared to 321 ss ??
09-06-2005, 08:18 PM
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304 ss compared to 321 ss ?? i hear 321 is the shizznit for turbo headers..
but i notice kist like the turbltech race kit usees 304? and alot of the other turbo builders use 304.. all ive herd about 321 is just from what people say..
but i notice the price on j bends is almost double....for j bends....
and what size thickness i look at the big dogs harlen and i see he is running and has run 16 guage...
but then i herd people say use 14 guage for headers???
and what size diameter pipes to use...im learning about kits by looking from turbotech and ptk and turbo people but i didnt see anywhere where it mentioned diameter size of header pipes??
but i notice kist like the turbltech race kit usees 304? and alot of the other turbo builders use 304.. all ive herd about 321 is just from what people say..
but i notice the price on j bends is almost double....for j bends....
and what size thickness i look at the big dogs harlen and i see he is running and has run 16 guage...
but then i herd people say use 14 guage for headers???
and what size diameter pipes to use...im learning about kits by looking from turbotech and ptk and turbo people but i didnt see anywhere where it mentioned diameter size of header pipes??
09-06-2005, 08:53 PM
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304 is more prone to intergranular corrosion (and therefore cracking), especially at weld seams and other stress risers. 321 is better than 304 from a metallurgical stand point, but nothing will help you more than a solid design...actual build material should be secondary to that.
09-06-2005, 09:17 PM
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Originally Posted by braap
304 is more prone to intergranular corrosion (and therefore cracking), especially at weld seams and other stress risers. 321 is better than 304 from a metallurgical stand point, but nothing will help you more than a solid design...actual build material should be secondary to that.
thanks humm what to order......
solid design i got hell i even got it all laid out on a 3d computer animated drawing!
i just need to know what tubeing size to use for the headers? 1 7/8?
09-07-2005, 07:44 AM
#6
Originally Posted by Whistler
If you use jet hot ceramic the coating will flake off. It is only good to around 1400' EGT. There are other coatings that will help keep the heat indide the pipe , just none that are shiny.
most ceramic coatings wont flake off, any quailty ones.
they make this stuff specifically for turbo pipes and wont have any problems with doing mild coated.
though 321 would probably be your best bet.
most street setups use mild coated. and all those kits like turbotech have had cracks (havent heard about there race kit though as its a better design)
09-07-2005, 09:38 AM
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Originally Posted by smokinHawk
most ceramic coatings wont flake off, any quailty ones.
they make this stuff specifically for turbo pipes and wont have any problems with doing mild coated.
though 321 would probably be your best bet.
most street setups use mild coated. and all those kits like turbotech have had cracks (havent heard about there race kit though as its a better design)
he said he will not waste his time on 304
he is checking on 321 SS for me...but from what i looked at burns stainless 321 is pretty pricy..
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09-07-2005, 10:07 AM
#8
Originally Posted by smokinHawk
most ceramic coatings wont flake off, any quailty ones.
they make this stuff specifically for turbo pipes and wont have any problems with doing mild coated.
though 321 would probably be your best bet.
most street setups use mild coated. and all those kits like turbotech have had cracks (havent heard about there race kit though as its a better design)
The coatings made specifically for turbo pipes are available in a satin black, satin white , grey or blue.Jet Hot and other polished ceramics begin to discolor at 1400' and break their bond with the metal when exposed to the 1800' + temps that a H.O. turbo exhaust creates.
Not to say you can't use the silver stuff, plenty of people do, but it doesn't last if you push the car hard.
09-07-2005, 10:23 AM
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Originally Posted by Whistler
The coatings made specifically for turbo pipes are available in a satin black, satin white , grey or blue.Jet Hot and other polished ceramics begin to discolor at 1400' and break their bond with the metal when exposed to the 1800' + temps that a H.O. turbo exhaust creates.
Not to say you can't use the silver stuff, plenty of people do, but it doesn't last if you push the car hard.
off track guys... i could care less about the coatings hell ill spary pain them black im not building no show car..
i just wanna know if i can use mild steel for the hot parts!
09-07-2005, 10:30 AM
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Originally Posted by Whistler
The coatings made specifically for turbo pipes are available in a satin black, satin white , grey or blue.Jet Hot and other polished ceramics begin to discolor at 1400' and break their bond with the metal when exposed to the 1800' + temps that a H.O. turbo exhaust creates.
Not to say you can't use the silver stuff, plenty of people do, but it doesn't last if you push the car hard.
09-07-2005, 01:42 PM
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Originally Posted by Whistler
Nah, the company I sub'd to produce them were a bunch of burnouts and never gave me much.
Mild steel will work fine for your hot parts.
Mild steel will work fine for your hot parts.
awomse thanks!
