Forced Induction Discussion of turbos , superchargers , and nitrous upgrades on the G35

Performance Radiator or Oil cooler more important for FI

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Old Jun 6, 2009 | 03:28 AM
  #61  
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Originally Posted by EricIsKlumzyee
EvolutionGSR..

You wont need either.. believe me.. but if you're planning to track I'd suggest a bigger radiator.. brand doesnt matter since most of them are made by the same manufacture and perfromance levels are about the same.. remember its not about how thick the radiator is its about how much surface area you can cover (not that it doesnt matter, just one out weights the other). Go with one thats a direct bolt on or min modding. But dont be in any rush.. if you're doing a direct bolt on you can always do it down the line yourself as its sorta easy to do. But if your job involes pulling the motor then just fork up the $200-$400 ont he radiator since you can hide the labor with the install right now.

Oil Cooler, not needed.. oil pan spacer + extra quart is the cheapest way to go. but if you're set on one getting it now would be the best time since you can again hide the labor through your FI install =). its a rather PITA once you have your front mount in place and everythings together.

again just go by this concept =) and happy modding..

1. oil spacer for sure
2. radiator (if you plan to track then for sure)
3. oil cooler

in that order
Hey bro whats up wit them body kits B.. i would like to place an order for one.. are u still taking orders.
 
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Old Jun 6, 2009 | 09:19 AM
  #62  
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Originally Posted by Skaterbasist
Someone correct me if im wrong, but doesn't more oil just mean that it will take a little longer to heat up? How exactly does more oil = COOLER oil during, lets say, a long track day?

Since its still the same substance it should have the same specific heat capacity.

Again, someone correct me if im wrong. My last chemistry class was a year ago.
Right, more oil takes longer to heat up. So when you're mashing down the straight, your oil won't be as hot at the end of it as it would otherwise.

Additionally, the more oil you have in contact with the pan and spacer, the more cooling capacity you have on the oil at the same time.

More oil (with the proper spacer of course) = win

For any turbo setup, your pan spacer and oil cooler mods comes first. Skip out on it and you're engine will start consuming oil and eventually fail prematurely as the cooked oil is unable to do it's job.
 
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Old Jun 6, 2009 | 10:32 AM
  #63  
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here is the question i have.. im lookin to upgrade for supportin mods, with that said.. i found a good deal on my350z for rads.

is there a diffrence in the 350z vers the G35 with the Mishimotot rad. cuz on the web site they go for diff prices. so question is will the 350z one which is cheaper fit our cars.. and im also lookin to buy the Rad fan shroud. do you think it will fit if i would to buy the G35 vers the 350z one?

hope this isnt confusing..

here is the link
http://my350z.com/forum/engine/39851...uit-sport.html

http://www.mishimoto.com/aluminum-fan-shroud-kits.html
 
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Old Jun 6, 2009 | 11:05 AM
  #64  
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don,t do it. it,s not same 350z and g35 radiator support little bit diffrent firsr neck other side and on top hold bolt about 3 inch other way. i did it before and up returen it(seller says fit g35) get only g35 version and check radiator neck(same location from stock) at frount view of radiator g35 left side neck 350z has right side .if you get 350z radiator bottom support will fit but not the top bolt down and ac condenser will not fit. too much work for less money saving.
 
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Old Jun 6, 2009 | 11:52 AM
  #65  
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Originally Posted by seankim513
don,t do it. it,s not same 350z and g35 radiator support little bit diffrent firsr neck other side and on top hold bolt about 3 inch other way. i did it before and up returen it(seller says fit g35) get only g35 version and check radiator neck(same location from stock) at frount view of radiator g35 left side neck 350z has right side .if you get 350z radiator bottom support will fit but not the top bolt down and ac condenser will not fit. too much work for less money saving.
k what about the fan Shroud


is this Unversal?
 
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Old Jun 6, 2009 | 01:20 PM
  #66  
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hope it fit oem fan has 4 wire this has only 2 wire.
 
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Old Jun 6, 2009 | 01:31 PM
  #67  
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maybe can jerry rig something up.
 
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Old Jun 6, 2009 | 02:37 PM
  #68  
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Oil cooler.....Oil cooler is a must on FI cars. 2 is better than one.....but one is better than none.
 
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Old Jun 22, 2009 | 12:51 AM
  #69  
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Anyone have any experience with the HKS oil cooler, I've been considering it, but am unsure if any modifications are required to make it fit?:

http://www.hks-power.co.jp/products/...4an020-22.html
 
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Old Jun 22, 2009 | 08:47 PM
  #70  
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Originally Posted by Skaterbasist
Someone correct me if im wrong, but doesn't more oil just mean that it will take a little longer to heat up? How exactly does more oil = COOLER oil during, lets say, a long track day?

Since its still the same substance it should have the same specific heat capacity.

Again, someone correct me if im wrong. My last chemistry class was a year ago.
Well the units for specific heat are in joules per kilogram-degrees. So the more you have the more absolute heat capacity you have. The excess capacity provides your cooling system the time to dissipate heat. Eventually you will reach steady state conditions, but with more fluid, there will be a greater capacity to absorb spikes in heat production.

If you had to pick one (why only one? no idea? because we were having a theoretical discussion? because you're going FI and you can't afford the additional $150 for an oil cooler? ...and I know XKR picked an oil cooler which can be justified also), I would pick the radiator for the following reasons:
1. Coolant fluid capacity is less.
2. The boiling point for coolant vs. oil is lower.
3. If you are using a water based coolant and it boils, you will develop cylinder head hot spots and fry your headgasket.
4. If you develop cylinder hot spots, you will be prone to pre-ignition, which can lead to disaster, even for a built motor.

That said, who wouldn't run both if you're FI? Even with an oil cooler, my oil temps hover around 210-220 cruising in the summer. Push it and it'll hit 250 easy.
 

Last edited by rcdash; Jun 22, 2009 at 08:56 PM.
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Old Jun 23, 2009 | 02:38 PM
  #71  
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Originally Posted by jonnylaw
Anyone have any experience with the HKS oil cooler, I've been considering it, but am unsure if any modifications are required to make it fit?:

http://www.hks-power.co.jp/products/...4an020-22.html
From the pictures that is exactly where your windshield wiper fuild resivor is, so my guess is some mods might have to be done.
 
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Old Jun 24, 2009 | 12:41 AM
  #72  
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Originally Posted by GreenGoblin
From the pictures that is exactly where your windshield wiper fuild resivor is, so my guess is some mods might have to be done.
that's what i was afraid of. Maybe I will go with the GTM one, unless there are other vehicle specific engine oil coolers for the G?
 
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Old Jun 24, 2009 | 02:06 PM
  #73  
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You can make anything fit - just takes some time to find a good spot and mock up brackets. You can buy aluminum and steel strips/bars at Lowes/Home Depot and cut/drill as needed to use as supports.
 
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Old Jun 24, 2009 | 04:45 PM
  #74  
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http://www.blinemotorsports.com/oilcool.html I am using this one, I did switch out the lines to steel braided tho.
 
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Old Jun 25, 2009 | 12:08 AM
  #75  
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Originally Posted by GreenGoblin
http://www.blinemotorsports.com/oilcool.html I am using this one, I did switch out the lines to steel braided tho.
This one looks nice, is there a thermostat that comes with this?
 
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