Honestly Opinion Please...

Discussion in 'Engine Tech' started by DOUBAD RACIN1, Feb 13, 2018.

  1. DOUBAD RACIN1

    DOUBAD RACIN1
    Expand Collapse
    Member

    Joined:
    Mar 13, 2017
    Messages:
    82
    Likes Received:
    3
    Offline
    Wanted to know everyone opinion on powder coating a intake.
    Seen in a few places where they say its a disadvantage, cause it holds heat and the aluminum intake is designed to dissipate Heat....
    So im assuming it would lose performance with holding more heat then normal...
    Whats your take...
     
  2. ~JM~

    ~JM~
    Expand Collapse
    Cross Member

    Joined:
    Oct 31, 2007
    Messages:
    1,887
    Likes Received:
    285
    Offline
  3. rmar

    rmar
    Expand Collapse
    Yo Baby Daddy

    Joined:
    Oct 1, 2007
    Messages:
    4,262
    Likes Received:
    421
    Offline
    That's the least of your/our problems.
     
    • Like Like x 1
  4. Jerryl

    Jerryl
    Expand Collapse
    Doing MORE with LESS!

    Joined:
    Dec 14, 2004
    Messages:
    7,699
    Likes Received:
    314
    Offline
    Heat conduction requirements largely depend on the set-up and operating conditions. A HA non-methanol injected charge can easily reach temps of 250F, and I wouldn’t want to diminish heat dissipation away from the intake via a ceramic coating. In addition, attempting to equalize wet flow in a dry flow intake requires heat, especially if the intake is under pressure. Cosmetic requirements are obviously different, but I no longer trust any work done coating the bottom of an intake in fear of paint flaking off.
     
    • Like Like x 1
  5. earlbrown

    earlbrown
    Expand Collapse
    runs with scissors

    Joined:
    May 26, 2001
    Messages:
    6,338
    Likes Received:
    965
    Offline
    If the intake is 250 and the underhood temp is 250 there will be no heat absorption, or heat radiation going on.....



    Something to think about.





    When it comes to heat, you can't look at it from the POV of what humans perceives as 'hot'.
     
  6. Kendall1214

    Kendall1214
    Expand Collapse
    Member

    Joined:
    Sep 30, 2014
    Messages:
    88
    Likes Received:
    4
    Offline
    I wouldn't paint mine but I'm not sure if it would affect it, I have no experience of painting it! It could cause it to hold heat, as when the car is moving temps shouldn't be anywhere near 250. Even if idling id hope your engine isn't at 250 degrees. Against polishing? I'm not sure if 250 degrees is what it would go but I'm sure the intake charge would get warmer than the engine temp. When we was taught in college for every degree you cool the intake temperature you cool the exhaust 3 degrees.
     
  7. ~JM~

    ~JM~
    Expand Collapse
    Cross Member

    Joined:
    Oct 31, 2007
    Messages:
    1,887
    Likes Received:
    285
    Offline
    Will the aluminum be exposed to the elements often?

    They develop a white chalky appearance after a while when exposed to moisture. Maybe clear anodize, powder coat, or aluminum colored paint. Hard to find the correct primer for aluminum.
     
  8. NY Twin Turbo

    NY Twin Turbo
    Expand Collapse
    All the good stuff.....Times 2.

    Joined:
    Dec 10, 2014
    Messages:
    1,955
    Likes Received:
    388
    Offline
    Agreed! No need to split hairs for the average street application.

    I would hardly be concerned with heat retainage caused by the powder coat. I'd be more concerned about high intake air temperatures in general with an 84/85 intake.

    Get it powder coated and make it look pretty. Just don't let them coat the inside or underside. Then install an alky kit and cool that bitch down in a hurry.
     
    • Like Like x 1
  9. rmar

    rmar
    Expand Collapse
    Yo Baby Daddy

    Joined:
    Oct 1, 2007
    Messages:
    4,262
    Likes Received:
    421
    Offline
    As long as your coater uses a little fluoride in his pretreatment and its cured properly you shouldn't have any (primer) adhesion problems.
    Also ensure all internal access are mask off if and when they blast it media/sand. It has been the downfall of many a engine.
     
  10. Jerryl

    Jerryl
    Expand Collapse
    Doing MORE with LESS!

    Joined:
    Dec 14, 2004
    Messages:
    7,699
    Likes Received:
    314
    Offline
    Re: 250F.
    I carefully stated "Charge temp", "HA", "non methanol injected". You would be surprised what can be learned, if you ever measure under those conditions. Don't take my word for it . . . .
     
  11. Mr.Spool

    Mr.Spool
    Expand Collapse
    Well-Known Member

    Joined:
    Nov 6, 2006
    Messages:
    3,394
    Likes Received:
    255
    Offline
    Power coating is fine not going to hurt you at all
     
  12. Nick Micale

    Nick Micale
    Expand Collapse
    Tech Advisor
    Staff Member

    Joined:
    May 26, 2001
    Messages:
    8,326
    Likes Received:
    1,306
    Offline
    You cannot no go wrong with an opinion, so here is mine!

    Having done both paint and powder coating on intake manifolds, I have not seen any temp difference of the intake air charge? I would never coat or paint the bottom of the intake.

    Powder coat vs. paint is a big difference in cost, and many customers would rather use their budget elsewhere.

    Paint will do well with the process I use when painting an intake. First it must be very clean.

    I then heat the intake with a propane torch to remove all moisture, and then use an aluminum or silver paint.

    After it is completely dry, I will do a couple coats of clear spray paint which holds up well even if gas leaks on it.

    On a side note, I have also been very successful with using hi-temp spray paint on headers if they are also heated to 2-300 degrees to drive out any moisture before painting them.
     
  13. NY Twin Turbo

    NY Twin Turbo
    Expand Collapse
    All the good stuff.....Times 2.

    Joined:
    Dec 10, 2014
    Messages:
    1,955
    Likes Received:
    388
    Offline
    You could have it polished. I did my own and I can do yours too. I only charge 25 cents an hour. Final cost will be somewhere around $23,456.00.

    Let me know.
     
    • Funny Funny x 2
  14. DOUBAD RACIN1

    DOUBAD RACIN1
    Expand Collapse
    Member

    Joined:
    Mar 13, 2017
    Messages:
    82
    Likes Received:
    3
    Offline
    Think ill just powder coat it ...
    Only cost a 150.00
     
    • Funny Funny x 1
  15. rmar

    rmar
    Expand Collapse
    Yo Baby Daddy

    Joined:
    Oct 1, 2007
    Messages:
    4,262
    Likes Received:
    421
    Offline
    Sounds fair....:D
     
    • Funny Funny x 1
  16. rmar

    rmar
    Expand Collapse
    Yo Baby Daddy

    Joined:
    Oct 1, 2007
    Messages:
    4,262
    Likes Received:
    421
    Offline
    Damn I may go back in bitness.
     
    • Like Like x 1
  17. NY Twin Turbo

    NY Twin Turbo
    Expand Collapse
    All the good stuff.....Times 2.

    Joined:
    Dec 10, 2014
    Messages:
    1,955
    Likes Received:
    388
    Offline
    You mean business? Yea, you should.

    But I know one thing is for certain...............I can't make any money polishing aluminum intakes!
     
  18. rmar

    rmar
    Expand Collapse
    Yo Baby Daddy

    Joined:
    Oct 1, 2007
    Messages:
    4,262
    Likes Received:
    421
    Offline
    Nope...I was in business before. Next time I'll be in bitness that way I can drink beer, socialize and enjoy what I'm doing.
    Kind of a friend's and family thing.
     

Share This Page