Thread: Which intake manifold is better?

Page 1 of 2 12 LastLast
Results 1 to 20 of 27
  1. #1 Which intake manifold is better? 
    SE Level Member
    Join Date
    Mar 2010
    Location
    Canada
    Posts
    22
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    I have a 98 GP GT couple. As im going to have the intake manifold and gasket changed this May, I m preparing the parts and tools now. I found from 3800 Series II Vin K Upper Intake Information : Engine : PontiacBonnevilleClub.com that there are two recommended manifold, so i m wondering which one is better?
    1. APN: "About a year ago, we became aware of a new kit that appears to offer the best off-the-shelf fix for the upper intake manifold. The combination of a metal heat shield to protect the plastic upper and a reduced diameter stovepipe is the best method we can currently recommend to resolve this problem without altering the cooling system. Using either of the two reduced diameter pipes supplied with the kit, an insulating gap of .125” is created between the hot pipe and the heat shield. The kit is marketed mail-order by Automotive Parts Network; it includes a UIM gasket, a throttle body gasket, and other parts, and is priced under $100. http://www.ineedparts.com/auto-parts/in ... 17806.html "
    2. Dorman: Dorman markets a replacement UIM kit that includes reduced diameter stovepipes that will directly replace the larger stock pipes. When one of the smaller pipes supplied with the kit is installed in the LIM, the insulating gap between the hot pipe and the plastic EGR bore is increased to .123”. The Dorman upper is a good replacement for the original equipment part, and includes a UIM gasket, throttle body gasket, and other parts, but the EGR passage is not protected with a heat shield. The Dorman kit is available widely and sells for about $150.

    any more tips or comment other than than will be much appreciated, too.

    BTW: The coolant in my GP doesn't leak at all. Only the LIM gasket leaks minor oil. but no oil drip on the ground. I douno why. Do i really need to change them recently?
    Reply With Quote  
     

  2. #2 Re: Which intake manifold is better? 
    GT Level Member ChrisGTT's Avatar
    Join Date
    Nov 2008
    Location
    NY
    Posts
    131
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    And your changing the actual mani why exactly?

    Speed is an addiction the faster you go the slower it becomes.
    01 GT | Matt's new TT cam | PT-67 | 18-22psi and a couple stock trannys.
    Reply With Quote  
     

  3. #3 Re: Which intake manifold is better? 
    SE Level Member
    Join Date
    Mar 2010
    Location
    Canada
    Posts
    22
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    Quote Originally Posted by ChrisGTT View Post
    And your changing the actual mani why exactly?
    it's a 12 yrs car~these things had never been changed before. And the LIM gasket leaks oil. Actually, i was just planning to change them, but never thought about why to change...
    Reply With Quote  
     

  4. #4 Re: Which intake manifold is better? 
    GT Level Member ChrisGTT's Avatar
    Join Date
    Nov 2008
    Location
    NY
    Posts
    131
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    The gaskets ya but why the actual intake manifold? If it hasn't blown up on you why change it?

    Speed is an addiction the faster you go the slower it becomes.
    01 GT | Matt's new TT cam | PT-67 | 18-22psi and a couple stock trannys.
    Reply With Quote  
     

  5. #5 Re: Which intake manifold is better? 
    The Blue One blueguy's Avatar
    Join Date
    Jun 2008
    Location
    Dirtyzville, Missery
    Posts
    31,287
    Thanks (Received)
    1
    Likes (Received)
    2
    Dislikes (Received)
    0
    ^^Sometimes they tend to warp. The one on my Mom's LeSabre had 29K on it when I put the new intake manifold on it a few years ago. It was causing a vacuum leak and a little bit of coolant dripping out. IMO, it doesn't matter how many miles or whatever...if I had the money, I'd just put a L26 Upper on there and be done and never have to worry about it again.
    Sold WBody's: '03 Blue GTP/'98 Green GTP/'98 Silver GT/'05 GXP
    '99 Chevrolet Silverado Classic Z71 4x4 - K&N Intake/Gibson Exhaust #TRUCKTHINGS
    '12 Buick Regal Turbo - ZZP CAI/20% Tint/HID's
    '89 Ford Mustang LX Notchback - LM7 5.3, 4L80, 9", HX40
    '04 Chevrolet Corvette MRM A4/LS1 - TSP LT's, 3"O/R X, AFE S2 CAI
    Reply With Quote  
     

  6. #6 Re: Which intake manifold is better? 
    Awaiting Confirmation
    Join Date
    Jul 2009
    Location
    aowdnawi
    Posts
    23,292
    Thanks (Received)
    0
    Likes (Received)
    1
    Dislikes (Received)
    0
    and note he said OIL which suggests rocker covers, not LIM.
    Reply With Quote  
     

  7. #7 Re: Which intake manifold is better? 
    GT Level Member ChrisGTT's Avatar
    Join Date
    Nov 2008
    Location
    NY
    Posts
    131
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    Quote Originally Posted by bluegtp91 View Post
    ^^Sometimes they tend to warp. The one on my Mom's LeSabre had 29K on it when I put the new intake manifold on it a few years ago. It was causing a vacuum leak and a little bit of coolant dripping out. IMO, it doesn't matter how many miles or whatever...if I had the money, I'd just put a L26 Upper on there and be done and never have to worry about it again.
    Aluminum vs plastic hmm I wonder which holds heat better....

    Speed is an addiction the faster you go the slower it becomes.
    01 GT | Matt's new TT cam | PT-67 | 18-22psi and a couple stock trannys.
    Reply With Quote  
     

  8. #8 Re: Which intake manifold is better? 
    Awaiting Confirmation
    Join Date
    Jul 2009
    Location
    aowdnawi
    Posts
    23,292
    Thanks (Received)
    0
    Likes (Received)
    1
    Dislikes (Received)
    0
    I also wonder which one is more likely to warp under heat cycling.
    Reply With Quote  
     

  9. #9 Re: Which intake manifold is better? 
    SE Level Member
    Join Date
    Mar 2010
    Location
    Canada
    Posts
    22
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    Quote Originally Posted by ChrisGTT View Post
    The gaskets ya but why the actual intake manifold? If it hasn't blown up on you why change it?
    It was said the original intake manifold was a bad design and better to be changed. But mine didn't have problem yet. So i asked u guys.
    Reply With Quote  
     

  10. #10 Re: Which intake manifold is better? 
    SE Level Member
    Join Date
    Mar 2010
    Location
    Canada
    Posts
    22
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    Quote Originally Posted by bluegtp91 View Post
    ^^Sometimes they tend to warp. The one on my Mom's LeSabre had 29K on it when I put the new intake manifold on it a few years ago. It was causing a vacuum leak and a little bit of coolant dripping out. IMO, it doesn't matter how many miles or whatever...if I had the money, I'd just put a L26 Upper on there and be done and never have to worry about it again.
    will L26 fit?
    Reply With Quote  
     

  11. #11 Re: Which intake manifold is better? 
    I AM PEWPIN! rynoman03's Avatar
    Join Date
    Dec 2007
    Location
    Topeka, KS
    Posts
    3,668
    Thanks (Received)
    1
    Likes (Received)
    0
    Dislikes (Received)
    0
    Quote Originally Posted by matt5112 View Post
    and note he said OIL which suggests rocker covers, not LIM.
    Nice Catch I was wondering about that myself.
    1999 GTPHP Tuned, Ported SC/TB, 42#'s, SSAC's, ZZP Modded 1.9's/LS6 Springs/Manley's, TransGo Shift Kit, Poly Uppers, KYB GR2's/Springtech's. - 231k and traded it in. - Gone
    2000 GTP: XP, P&P'd Heads, N*\Lq4 MAF, GenV, 42#'s, PRJ Rails\FPR, Racetronix, TEP w/ 3.29 Gears, 300m, 7/8" chain, SSAC's. - Collecting dust in my garage.
    Reply With Quote  
     

  12. #12 Re: Which intake manifold is better? 
    GTX Level Member imdaman3's Avatar
    Join Date
    Feb 2010
    Location
    ohio
    Posts
    780
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    lower intake gaskets dont seep oil ru serious??? they all do were the lower intake meets the block-
    Last edited by imdaman3; 03-08-2010 at 01:26 AM.
    Reply With Quote  
     

  13. #13 Re: Which intake manifold is better? 
    GT Level Member ChrisGTT's Avatar
    Join Date
    Nov 2008
    Location
    NY
    Posts
    131
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    Quote Originally Posted by imdaman3 View Post
    lower intake gaskets dont seep oil??? ru serious they all do on the lower intake were it meets the block
    QFT, even where it meets the UIM.


    And I would rather run a L36 intake mani then a L26. Say w.e you want but the L26 soaks heat like a *****.

    And ya the L26 fits. The swap is done all the time.

    Speed is an addiction the faster you go the slower it becomes.
    01 GT | Matt's new TT cam | PT-67 | 18-22psi and a couple stock trannys.
    Reply With Quote  
     

  14. #14 Re: Which intake manifold is better? 
    GTX Level Member imdaman3's Avatar
    Join Date
    Feb 2010
    Location
    ohio
    Posts
    780
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    qft?
    Reply With Quote  
     

  15. #15 Re: Which intake manifold is better? 
    GTX Level Member imdaman3's Avatar
    Join Date
    Feb 2010
    Location
    ohio
    Posts
    780
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    any1 gota pic of the aluminum l26 plenum they can post??
    Reply With Quote  
     

  16. #16 Re: Which intake manifold is better? 
    SE Level Member
    Join Date
    Mar 2010
    Location
    Canada
    Posts
    22
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    Quote Originally Posted by ChrisGTT View Post
    QFT, even where it meets the UIM.


    And I would rather run a L36 intake mani then a L26. Say w.e you want but the L26 soaks heat like a *****.

    And ya the L26 fits. The swap is done all the time.
    So it is common that LIM gasket and/or UIM gasket leak oil? I only get LIM leak oil. What should i do? Replace it now or wait until somewhere leak coolant? Any other advices will be much appreciate.
    Reply With Quote  
     

  17. #17 Re: Which intake manifold is better? 
    GT Level Member ChrisGTT's Avatar
    Join Date
    Nov 2008
    Location
    NY
    Posts
    131
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    Replace all the gaskets. Don't worry about the actual manifolds dude.

    Eh I wouldn't say common but it happens.

    QFT = Quoted for truth

    L26 mani


    Speed is an addiction the faster you go the slower it becomes.
    01 GT | Matt's new TT cam | PT-67 | 18-22psi and a couple stock trannys.
    Reply With Quote  
     

  18. #18 Re: Which intake manifold is better? 
    GTX Level Member imdaman3's Avatar
    Join Date
    Feb 2010
    Location
    ohio
    Posts
    780
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    would tht wrk on a 03 gt????
    Reply With Quote  
     

  19. #19 Re: Which intake manifold is better? 
    The Blue One blueguy's Avatar
    Join Date
    Jun 2008
    Location
    Dirtyzville, Missery
    Posts
    31,287
    Thanks (Received)
    1
    Likes (Received)
    2
    Dislikes (Received)
    0
    Ys it wuld wrk ona 03g t
    Sold WBody's: '03 Blue GTP/'98 Green GTP/'98 Silver GT/'05 GXP
    '99 Chevrolet Silverado Classic Z71 4x4 - K&N Intake/Gibson Exhaust #TRUCKTHINGS
    '12 Buick Regal Turbo - ZZP CAI/20% Tint/HID's
    '89 Ford Mustang LX Notchback - LM7 5.3, 4L80, 9", HX40
    '04 Chevrolet Corvette MRM A4/LS1 - TSP LT's, 3"O/R X, AFE S2 CAI
    Reply With Quote  
     

  20. #20 Re: Which intake manifold is better? 
    GTX Level Member imdaman3's Avatar
    Join Date
    Feb 2010
    Location
    ohio
    Posts
    780
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    what all would you have to change to make that work? and will 03throtle body just bolt rite on?
    Reply With Quote  
     

Page 1 of 2 12 LastLast

Similar Threads

  1. Intake manifold :)
    By TheGreatGatsby in forum 3.1L V6 (LHO/LG8)
    Replies: 19
    Last Post: 10-03-2009, 05:16 PM
  2. Intake manifold end cap gasket
    By 99prixgt in forum 3.8L V6 Supercharged (L67)(L32)
    Replies: 2
    Last Post: 05-11-2009, 07:01 PM
  3. Lower intake manifold
    By FuglyGTP in forum 3.8L V6 Supercharged (L67)(L32)
    Replies: 10
    Last Post: 03-06-2009, 10:40 AM
  4. Intake manifold
    By joesforspeed in forum 3.8L V6 Supercharged (L67)(L32)
    Replies: 10
    Last Post: 10-25-2008, 12:15 PM
  5. Intake manifold
    By joesforspeed in forum Turbo
    Replies: 1
    Last Post: 10-21-2008, 03:55 AM
Tags for this Thread

View Tag Cloud

Bookmarks
Bookmarks
Posting Permissions
  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •