Larger intercooler on 2,5Did





Results 1 to 19 of 19
  1. #1
    Join Date
    Feb 2009
    Location
    Pretoria
    Age
    44
    Posts
    4,488
    Thanked: 717

    Default Larger intercooler on 2,5Did

    I've obtained a larger cooler which I intend to fit soon.

    The inlet and outlet has a diameter of 75mm which is obviously larger than the OEM's cooler.

    So somewhere in the equation towards the turbo and the intake manifold, this has to be reduced with presumably metal pipes at both sides which gets smaller in diameter from the one side to the other so as to allow the thinner rubber pipes to fit.

    My question, will this not have the same restrictive effect and defeat the purpose of the exercise as in the scenario where one fits a larger in diameter exhaust which does not originate all the way from the turbo? Or without mandrel bends?

    Please let's hear from the slim manne who has done this.
    Last edited by Die SwartKat; 2016/06/21 at 02:53 PM.
    Nico Swart

    Triton 2.5DiD D/C with SS
    ZS6NJS

    One day, or Day One. You decide. Tomorrow is promised for no one!

  2. #2
    Join Date
    Aug 2012
    Location
    Randburg
    Age
    33
    Posts
    166
    Thanked: 7

    Default Re: Larger intercooler on 2,5Did

    Hello. I havent done this but the larger intercooler will work better.

    Basic workings of intercooler (or any heat exchanger) is that you have a fluid (air) flow rate off x liter per min. The surface area and outside air temp will determine how cool the flow gets.

    Under ideal circumstances the fluid exiting the intercooler will exit at the outside air temp.

    So with a bigger intercooler you are increasing the surface area of the heat exchanger. This will ensure that the fluid gets colder faster. Your flow rate of x l/min stay the same and the outside temperature stay the same.

    Hope this makes sense. A quick reply from my cell phone. Google heat exchangers for better explanations.



    Sent from my mobile device
    2007 Prado VX 4.0 V6 - Tiny
    SOLD: 2006 Pajero 3.2Di-D SWB - Die Valk

  3. #3
    Join Date
    Feb 2009
    Location
    Pretoria
    Age
    44
    Posts
    4,488
    Thanked: 717

    Default Re: Larger intercooler on 2,5Did

    So are you saying that it will not make a significant difference? The fact that from the turbo the pipe gets bigger towards the inter cooler and after it thinner again towards the intake manifold?

    I'm sure it will be loads better because the heat exchange area is much larger, I'm just wondering about the pipes.

    I'll google this to become more knowledgeable.
    Nico Swart

    Triton 2.5DiD D/C with SS
    ZS6NJS

    One day, or Day One. You decide. Tomorrow is promised for no one!

  4. #4
    Join Date
    Feb 2013
    Location
    Strand
    Age
    33
    Posts
    219
    Thanked: 81

    Default Re: Larger intercooler on 2,5Did

    Read up on this yesterday as I will also be changing things up.

    http://forums.turbobricks.com/showthread.php?t=193640

    Thread starts with some wrong info and continues with some heavy hitters squashing the incorrect info.

    In short, piping sizes are irrelevant above a certain size since your engine won't be able to consume more than a certain amount of mass per rpm. Piping size changes don't make a big difference since the intercooler is the biggest restriction and a massive piping size change.

    Here is a pic of a WRC rally car with what I think is "air reserve tank" for going from WOT to zero back to WOT and having enough air mass in reserve pressurised for the engine to consume.
    http://s108.photobucket.com/user/Luk...phic1.jpg.html
    If the reserve is big enough there will be no turbo lag since the turbo will be at full speed as soon as the reserve is emptied. Thats my theory.
    Last edited by kenskind; 2016/04/19 at 03:53 PM.

  5. #5
    Join Date
    Feb 2009
    Location
    Pretoria
    Age
    44
    Posts
    4,488
    Thanked: 717

    Default Re: Larger intercooler on 2,5Did

    Thanks Kenskind,

    I'll look at this as soon as work load allow.
    Nico Swart

    Triton 2.5DiD D/C with SS
    ZS6NJS

    One day, or Day One. You decide. Tomorrow is promised for no one!

  6. #6
    Join Date
    Feb 2009
    Location
    Pretoria
    Age
    44
    Posts
    4,488
    Thanked: 717

    Default Re: Larger intercooler on 2,5Did

    Guys, where in Pta could I go and shop for silicon hoses?

    Google was not of much help.

    I need two hoses with 90 degree bends in them reducing from 75mm to 55mm.
    Nico Swart

    Triton 2.5DiD D/C with SS
    ZS6NJS

    One day, or Day One. You decide. Tomorrow is promised for no one!

  7. #7
    Join Date
    Jan 2011
    Location
    Centurion
    Age
    45
    Posts
    5,205
    Thanked: 9

    Default Re: Larger intercooler on 2,5Did

    http://www.mrturbo.co.za/index.php - Not PTA, but they'd be best to help you..
    IFS is like a swambo, soft, sexy and expensive!

    Apparently I need to make the airplane noises like mommy does when I try to spoon feed you the info..

  8. #8
    Join Date
    Feb 2009
    Location
    Pretoria
    Age
    44
    Posts
    4,488
    Thanked: 717

    Default Re: Larger intercooler on 2,5Did

    Taking a look now.
    Nico Swart

    Triton 2.5DiD D/C with SS
    ZS6NJS

    One day, or Day One. You decide. Tomorrow is promised for no one!

  9. #9
    Join Date
    Jan 2011
    Location
    Centurion
    Age
    45
    Posts
    5,205
    Thanked: 9

    Default Re: Larger intercooler on 2,5Did

    I have two intercoolers in the garage, wanting to replace the top mount on my old 4M40 with a front mount sometime, but time and space has stopped me so far. Let me know if they can help, would be good to know
    IFS is like a swambo, soft, sexy and expensive!

    Apparently I need to make the airplane noises like mommy does when I try to spoon feed you the info..

  10. #10
    Join Date
    Feb 2009
    Location
    Pretoria
    Age
    44
    Posts
    4,488
    Thanked: 717

    Default Re: Larger intercooler on 2,5Did

    It seems they have what I want from their product range, but they have yet to respond to my email query.
    Nico Swart

    Triton 2.5DiD D/C with SS
    ZS6NJS

    One day, or Day One. You decide. Tomorrow is promised for no one!

  11. #11
    Join Date
    Jan 2011
    Location
    Centurion
    Age
    45
    Posts
    5,205
    Thanked: 9

    Default Re: Larger intercooler on 2,5Did

    Quote Originally Posted by Die SwartKat View Post
    It seems they have what I want from their product range, but they have yet to respond to my email query.
    Nico, 90% van plekke moet jy ongelukkig bÍl en gat lek om hulle goed te koop....maar almal kla oor die ekonomie
    IFS is like a swambo, soft, sexy and expensive!

    Apparently I need to make the airplane noises like mommy does when I try to spoon feed you the info..

  12. #12
    Join Date
    Mar 2013
    Location
    Centurion
    Age
    32
    Posts
    342
    Thanked: 37

    Default Re: Larger intercooler on 2,5Did

    Quote Originally Posted by Die SwartKat View Post
    Guys, where in Pta could I go and shop for silicon hoses?

    Google was not of much help.

    I need two hoses with 90 degree bends in them reducing from 75mm to 55mm.


    Hi


    You can also try the following places recommended by friends
    * Volkspares
    * Stallion turbo
    * Hot 4 Cold
    * Pro link hydraulics


    Cheers
    2008 KB300 D-TEQ 4x2

  13. #13
    Join Date
    Dec 2011
    Location
    East London
    Age
    36
    Posts
    17,123
    Thanked: 2463

  14. #14
    Join Date
    Feb 2009
    Location
    Pretoria
    Age
    44
    Posts
    4,488
    Thanked: 717

    Default Re: Larger intercooler on 2,5Did

    Quote Originally Posted by MariusFourie View Post
    bigger isn't always more efficient.
    Marius,

    When or what will be too big?
    Nico Swart

    Triton 2.5DiD D/C with SS
    ZS6NJS

    One day, or Day One. You decide. Tomorrow is promised for no one!

  15. #15
    Join Date
    Dec 2011
    Location
    East London
    Age
    36
    Posts
    17,123
    Thanked: 2463

    Default Re: Larger intercooler on 2,5Did

    Im referring to some people going bigger but at a worse quality and end up having less heat exchange.

    The triton intercooler is a quality product. Its heat shedding properties is great.

  16. #16
    Join Date
    Feb 2013
    Location
    Strand
    Age
    33
    Posts
    219
    Thanked: 81

    Default Re: Larger intercooler on 2,5Did

    I also had issues with local suppliers since I don't have time to lick them nor drive to their shop. Ended up ordering my pipes from Amazon. HPS 4 ply silicone. Amazon usually gets the package to me within 10 days.

    When searching for products select the ship to South Africa search filter. Saves a lot of time looking for stuff only to find it doesn't ship here for some bizarre reason.
    Last edited by kenskind; 2016/04/28 at 01:03 PM. Reason: Grammar

  17. #17
    Join Date
    Feb 2009
    Location
    Pretoria
    Age
    44
    Posts
    4,488
    Thanked: 717

    Default Re: Larger intercooler on 2,5Did

    Quote Originally Posted by MariusFourie View Post
    Im referring to some people going bigger but at a worse quality and end up having less heat exchange.

    The triton intercooler is a quality product. Its heat shedding properties is great.
    I agree with this.

    Time will tell. The one I obtained apparently came from a V8 Lexus.

    The fins are a slightly bigger and wider apart then OEM. But the double the sq2

    Good or bad?
    Nico Swart

    Triton 2.5DiD D/C with SS
    ZS6NJS

    One day, or Day One. You decide. Tomorrow is promised for no one!

  18. #18
    Join Date
    Feb 2009
    Location
    Pretoria
    Age
    44
    Posts
    4,488
    Thanked: 717

    Default Re: Larger intercooler on 2,5Did

    Ok, I’ve done it.

    As the pics below will show, I fitted a larger cooler to the 2,5.
    The sq cm2 is just over double the size of the OE cooler and twice as thick.

    The pics don’t really show the full size difference because of the bull bar being in the way. But the new one extends quite a few cm downwards still.

    Cannot confirm this, but the guy I bought it from says it came of a Lexus, and the in and outlet piping was almost perfect to align with the existing pipes.

    Luckily the Triton got loads of space there.

    I merely had to drill a new hole in the center pillar to fit a bracket there, and had to manufacture two L shape brackets to secure it to a plate mounted on the chassis. It was mounted in such way that I’m able to take it off in minutes, and the OE can be refitted just as easy.

    Now..........there is no noticeable difference in power delivery but I didn’t expect this, as it is merely one of two safety precautions before I start fiddling with the boost a little. I plan on doing the 76mm down pipe free flow exhaust system next.

    But............what I did notice, (no placebo effect here) is that it took about 2km further on my usual route, at the usual time of day, with normal traffic conditions and driving style before the heat gauge needle climbed to where it normally sits at a particular point on that route.

    This tells me that the engine is indeed receiving cooler air which is obviously what one wants to accomplish with a cooler.

    Maybe there will be a power difference which will only become noticeable at highway speeds. But I hadn’t had time to test this yet and during the initial test run I never got past 70 km/h in town. Time will tell and I will report back here.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	IMG_8050.jpg 
Views:	105 
Size:	83.9 KB 
ID:	404090   Click image for larger version. 

Name:	IMG_8051.jpg 
Views:	110 
Size:	85.9 KB 
ID:	404091   Click image for larger version. 

Name:	IMG_8052.jpg 
Views:	107 
Size:	92.7 KB 
ID:	404092   Click image for larger version. 

Name:	IMG_8053.jpg 
Views:	113 
Size:	82.9 KB 
ID:	404093  
    Last edited by Die SwartKat; 2016/05/22 at 06:08 PM.
    Nico Swart

    Triton 2.5DiD D/C with SS
    ZS6NJS

    One day, or Day One. You decide. Tomorrow is promised for no one!

  19. #19
    Join Date
    Aug 2014
    Location
    Kempton Park
    Age
    39
    Posts
    10
    Thanked: 0

    Default Re: Larger intercooler on 2,5Did

    Good one, please update when time permits

Similar Threads

  1. Castrol SF off the market?
    By Plod in forum Land Rover
    Replies: 13
    Last Post: 2012/05/24, 06:48 PM
  2. Larger intercooler and free flow
    By Fanatic in forum Ford & Mazda
    Replies: 0
    Last Post: 2012/01/26, 12:14 PM
  3. Defender 110 TD5 Intercooler issue
    By Tsekela002 in forum Land Rover
    Replies: 13
    Last Post: 2010/09/05, 11:13 PM

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
  •