Jump to content
SAU Community

Power increase with large Front Mount Intercooler?

GILTY

By GILTY,
in Engines & Forced Induction

 Share

Recommended Posts

Zahos Mentor

Zahos

Posted
Posted

Let me put it into perspective for you....

I have a VR4 cooler which measures up to about 450 x 210 x 70....

It flows extremely well,

I haven't modified the front bar to expose it, and it rarely gets heat soaked (probably only in traffic on a hot day).

So a cooler that is 800 x 300 x 75 will be overkill, and probably rob you of power....

A cooler tht is 600 x 300 x 75 is still pretty big, and probably more than you need,

Bigger is not better when it comes to intercoolers. You need to pick one that is suited to your application.

In my case, I am aiming for about 180 - 200rwkw, and the VR4 cooler should do fine....

PRO_32 Proficient

PRO_32

Posted
Posted

yeah but if yer car is an ongoing project it might be a better idea to think long term so your not constantly upgrading the parts you buy my FMIC is 600 300 90 and at the same boost i was running with the stock cooler sure there was some lag but as soon as i dialled more boost in the thing was a hell of a lot more noticable and the lag was almost all gone

ps and i feel less guilty bout running bigger boost with the stock turbo

Zahos Mentor

Zahos

Posted
Posted

Yes, you should think of the long term, which is why I said that you pick one suited to your application...

If you're like me, and you're not planning on many mods, then a smaller cooler is better....

If you are planning on spending lots of $$$ for bigger turbo's where you need to flow more air through it, then certainly go for a bigger cooler, but make sure you dont go overboard...

Also dont confuse boost with flow... In your case, if you still have the standard turbo, then I'd ssay your intercooler is overkill. 300 x 90 is quite a large cross sectional area, and while your inlet temps may be down a little, your throttle response is suffering.

For example, theink of the extremities:

1. You have no cooler. The air flows through the pipe, and a constant speed at everypoint before it reaches the plenum.

2. You have an intercooler the size of a house. It will take a long time for your turbo to preasurise the intercooler, before the air in the outlet pipe can have the same preasure as the air in the inlet pipe.

Although relatively speaking, your cooler may not be as big, for short burst, you are robbing yourself some power.

Now imagine the second example again, but with a turbo half the size of the house... It wont take long for that turbo, to preasurise that intercooler, because it can flow more air,

ie: more air volume per second...

So then again, if you have a much larger turbo, capable of flowing more air, or you are planning on getting one, then yes, your cooler is well worth it...

just my 2c

GILTY Collaborator

GILTY

Posted
  • Author
Posted

Problems...last night I ruptured the gasket from my manifold to my turbo by hitting a fence stop under my car (too low)...

Have purchased 3 gaskets from Nissan for $178>engine-manifold, Manifold-turbo, turbo-dump...

Am fixing this on the weekend and will update on progress.

Intercooler will have to be the following weekend.

Am going to Mt Cotton on the 7th June, so everything has to be ready to rock'n'roll!

BOOSTD Mentor

BOOSTD

Posted
Posted

Fact- you will get a power increase if you improve flow. (provided you adjust your mapping to suit) If your cooler doesn`t improve flow your car will only be as fast as it is when it's cold. The option to run more boost and more timing advance with less chance of detenation is were all the larger gains are to be had. Jap intercooler manufactures try and find a happy medium between large flow and respectable cooling properties without to much pressure drop. Sound easy....its not. For instance a truck core may cool very well but have very low flow. *you get what you pay for*

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • Duncan
      R33 GTR running -9 with no tune

      By Duncan · Posted

      Sounds like you've got an interesting adventure ahead here with local support if you have trouble! My guess is that, unboosted, you will be OK with a small upgrade like -9. What will happen is that once the stock ECU sees more airflow than it expects it will add a heap of fuel and pull a heap of timing to be safe because it can't understand how it could get that much air without there being an issue. You will see clouds of black smoke and it won't pull hard through the midrange and top end. So, overall it will be a bit frustrating but should be OK. If you are still nervous set the base timing back 2o through the CAS, but it will be even more sluggish everywhere. As said above through...this is not my guarantee your engine won't be blown into a million pieces, leaving you looking for very hard to find parts A better idea is get a computer with logging ASAP, wire in a wide band O2 sensor and a use remote tuner. I've done multiple cars this way and while it is not as good as a specific tune on a dyno they can get it 90% right. I'd suggest if you can afford an R33 GTR these days you can afford an ECU and tune. And if you can't afford that you sure won't be able to afford the rebuild if it goes bad in the meantime,.  
    • Duncan
      New kid on the block

      By Duncan · Posted

      Yeah it would be nice if someone took the time to put that sort of information together, but there are a lot of variations in looms. I think you are making this way hard for yourself if you just want to get it running....sourcing an SR20 with the right wiring will be a billion times easier than matching the RB loom to an S15 chassis. If you do end up going this way, you just need to trace every wire in the loom with a multimeter, 95% of them will go to a location you can confirm at the ECU.....and then post it up for the next person who needs it  
    • Duncan
      Coolant leak?

      By Duncan · Posted

      Just top it up with water, and keep a general idea of how much you added. It is normal for water to be pushed into and pulled out of the reservoir through the cap, and it should not be more than half full or it will be likely to overflow when hot. Any decent mechanic can do a pressure test of the cooling system to confirm if you have a leak. Keep in mind if it is only leaking a little and when hot it may well evaporate before you see it hit the ground
    • GTSBoy
      Coolant leak?

      By GTSBoy · Posted

      I'd ask the shop what they used and use that. Mixing coolants is sometimes OK, sometimes not, and you have know the details of each coolant to know whether it's a good idea or not.
    • Chupapy
      Coolant leak?

      By Chupapy · Posted

      Is it alright to top up with just another green coolant?
×
×
  • Create New...