polished AST?
#1
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polished AST?
ive been looking around for a polished AST for my project car... cant seem to find one, but maybe im not looking hard enough. i really like the pettit unit, but unfortunatly it looks like they put some ugly paint on it which looks sort of crappy. also the cap size seems different on their unit (vs stock mazda size) but maybe its the same size. anyway, where can i get a polished one>? -heath
#4
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ASI Racing used to make a polished AST. I bought one last year. I just checked their website and it appears to be down. I don't know if they're still in business or not??
Here's their contact info:
ASI Racing
4286 NE 7TH Ave
Oakland Park, FL 33334-3135
Phone: (954) 566-2472
Good luck.
Here's their contact info:
ASI Racing
4286 NE 7TH Ave
Oakland Park, FL 33334-3135
Phone: (954) 566-2472
Good luck.
#6
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I bought the RX-7.com one and started to sand it to get the coating off but then found that i could just use paint striper and take it off easy without scuffing up the metal below.
#7
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Originally Posted by SurgeMonster
Yes it is a heat resistant material that it is coated with. You can almost touch the ast right after you get out of the car. I relocated the nipples on mine and polished it. The cap it comes with is 13lb. Can take pictures tomorrow.
Somebody reassure me on this.
I have a '95 FD. I know one of the modifications Mazda made to the cooling system was to lower the maximum pressure in the system by changing the pressure cap. The cap on my original AST says .9. The cap on the Pettit AST that is on the car now says 13lbs.
I haven't worked out the exact math, but those numbers should be roughly equivalent given an atmospheric pressure of 14.7 lbs, correct?
So the Pettit AST reflects the lower pressure Mazda specified after the '93 model, right? (Confusingly, I think the original AST pressure was 1.3 atmospheres...... I'm hoping that it isn't that Pettit forgot to print the decimal point.)
Can someone tell me for sure if my assumptions are correct and the Pettit AST equals the lower pressure stock AST cap? Or is there something else to this story I don't know or misunderstand?
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#9
RX-7 Bad Ass
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Yes, the Pettit cap is 13 pounds, or .9 atmospheres. Definitely a 13 pound cap, as it's very much a domestic and not a Japanese part .
Dale
Dale
#10
DGRR 2017 4/26-4/30, 2017
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I had 2 AST from pettit and both were polished by Garfinkle.. I think he will do it for $50. Definitely worth it..
You could go either 1.3 or 0.9.. I've done both and works fine.. If i remember, mazda increased it to 1.3 standard at somepoint.. It helps from boiling as pressure increases... So, its slightly better to go 16lb cap (1.3).
You could go either 1.3 or 0.9.. I've done both and works fine.. If i remember, mazda increased it to 1.3 standard at somepoint.. It helps from boiling as pressure increases... So, its slightly better to go 16lb cap (1.3).
#11
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Originally Posted by DaleClark
Yes, the Pettit cap is 13 pounds, or .9 atmospheres. Definitely a 13 pound cap, as it's very much a domestic and not a Japanese part .
Dale
Dale
OK, thanks. That's what I thought, but it's good to hear it from someone knowledgeable, such as yourself. I was afraid I was missing something and Pettit left out the decimal point, or was going by an old spec or something.
Forget polished, I always hoped that someone would produce a black AST so it wouldn't stick out so much as an aftermarket part. I considered painting it myself, but thought the better of it when I felt the semi-slick coating on my AST.
#12
Senior Member
Originally Posted by JConn2299
Forget polished, I always hoped that someone would produce a black AST so it wouldn't stick out so much as an aftermarket part. I considered painting it myself, but thought the better of it when I felt the semi-slick coating on my AST.
http://www.rotorsportsracing.com/per...ng/cooling.htm
#13
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Originally Posted by 93silverbullet
ASI Racing used to make a polished AST. I bought one last year. I just checked their website and it appears to be down. I don't know if they're still in business or not??
Here's their contact info:
ASI Racing
4286 NE 7TH Ave
Oakland Park, FL 33334-3135
Phone: (954) 566-2472
Good luck.
Here's their contact info:
ASI Racing
4286 NE 7TH Ave
Oakland Park, FL 33334-3135
Phone: (954) 566-2472
Good luck.
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yeah any pictures would be nice! people that have any type of aftermarket AST, please feel free to post a picture up. i didnt realize that the coating on the pettit one was functional.... now im reconsidering a polished one.
so just to get this straight, the pettit cap IS or IS NOT the same style as the original mazd cap? reason why im asking is because i have greddy 1.3 bar caps, so id need a matched AST right?
PS does the ASI unit take the standard mazda caps? if so id rather have that unit VS pettis domestic caps (would just make my life a little simpler).
so just to get this straight, the pettit cap IS or IS NOT the same style as the original mazd cap? reason why im asking is because i have greddy 1.3 bar caps, so id need a matched AST right?
PS does the ASI unit take the standard mazda caps? if so id rather have that unit VS pettis domestic caps (would just make my life a little simpler).
#16
Power Trippin'
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Originally Posted by USCmatt
Rotorsports racing sells a powdercoated black AST. I have it and really like the glossy black look.
http://www.rotorsportsracing.com/per...ng/cooling.htm
#17
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Originally Posted by USCmatt
Rotorsports racing sells a powdercoated black AST. I have it and really like the glossy black look.
http://www.rotorsportsracing.com/per...ng/cooling.htm
http://www.rotorsportsracing.com/per...ng/cooling.htm
Damn! Too late for me now, but thanks for the info anyway.
#20
Polishing Fiend
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Don't sand it! Use a chemical paint remover. It makes polishing a lot easier
My polished Pettit AST:
http://www.negative-camber.org/crispyrx7/finast2.jpg
Crispy
My polished Pettit AST:
http://www.negative-camber.org/crispyrx7/finast2.jpg
Crispy
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looking good.... so that's the pettit eh? looks really differrnt w/ out the coating. so can i get a 1.3 bar cap for the pettit?? (the 2 caps have to be matched for pressure correct?)
#23
I relocated the nipples on mine and polished it.