Manifold turning blue
#1
Senior Member
Thread Starter
iTrader: (4)
Join Date: Nov 2009
Location: Toronto, ON
Posts: 1,446
Total Cats: 6
Manifold turning blue
Hey guys,
Did a lot of searching and can't find enough info. Why is my manifold turning blue? I know turning colours is part of the tempering process, but everyone else seems to have a gold-ish manifold. Not sure which grade, but it is stainless steel. I'll confirm the grade with Abe.
It turned this colour while sitting and idling for the first time. I've taken it for a quick drive, but haven't driving it hard yet.
Did a lot of searching and can't find enough info. Why is my manifold turning blue? I know turning colours is part of the tempering process, but everyone else seems to have a gold-ish manifold. Not sure which grade, but it is stainless steel. I'll confirm the grade with Abe.
It turned this colour while sitting and idling for the first time. I've taken it for a quick drive, but haven't driving it hard yet.
#3
Supporting Vendor
iTrader: (33)
Join Date: Jul 2006
Location: atlanta-ish
Posts: 12,659
Total Cats: 134
Stainless can turn blue. Has something to do with high heat and reactions to the environment. If it happens to high end pots and pans, you wash them with lemon juice, and they turn shiny again. Not sure how practical that is in an automotive environmental however.
#7
Here you go. This is the stages that steel goes through for heat treating. It simply got to only a certain temp while idling. 320 c is like 600 something f. It will turn the gold color after it gets hotter.
http://www.westyorkssteel.com/Heat_T...t/tmpchart.htm
http://www.westyorkssteel.com/Heat_T...t/tmpchart.htm
#9
Tour de Franzia
iTrader: (6)
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,085
Total Cats: 375
Get a bigger hose to the wastegate, thank me later.
In regards to color:
Gold at the head, then a little blue, then that brown/gray color. You haven't put any heat through it yet, so it hasn't changed color. I mean hell, look at your wastegate, mine was that color once.
In regards to color:
Gold at the head, then a little blue, then that brown/gray color. You haven't put any heat through it yet, so it hasn't changed color. I mean hell, look at your wastegate, mine was that color once.
#11
Senior Member
Thread Starter
iTrader: (4)
Join Date: Nov 2009
Location: Toronto, ON
Posts: 1,446
Total Cats: 6
It's probably going to cost about the same to get done here as it will be to get one shipped from the US.
The WG hose is temporary, I wanted to run just base boost for a bit and not mess with my MBC.
The WG hose is temporary, I wanted to run just base boost for a bit and not mess with my MBC.
#12
Elite Member
iTrader: (2)
Join Date: Jan 2007
Location: Los Angeles, CA
Posts: 8,682
Total Cats: 130
Braided AN vacuum hoses FTW
You just need a
1.0x10mm - AN-4 adapter
Or just ******* slide the damn hose over the tial bung and clamp that bitch on. The rubber hoses can crack. They can also come off if you get oil on the bung. Ask me how I know!
You just need a
1.0x10mm - AN-4 adapter
Or just ******* slide the damn hose over the tial bung and clamp that bitch on. The rubber hoses can crack. They can also come off if you get oil on the bung. Ask me how I know!
Thread
Thread Starter
Forum
Replies
Last Post