Jump to content
SAU Community

Recommended Posts

  • Replies 51
  • Created
  • Last Reply

Top Posters In This Topic

Top Posters In This Topic

Posted Images

if you want to shorten in to get the best response, change to a top mount cooler. you will cut a fair bit of piping out, but will get major heat soak.

also for those interested in power loss from aircon, at a dyno comp i was turning off the aircon and the dyno guy started telling me about a toyota coaster (small bus) that the aircon took 17hp out of the motor. i know cars don't take that much, but we used to have a subaru sports wagon and it made a huge difference (but it was a really gutless car. 62kw at the flywheel, and weighed about as much as a skyline). i'd say it'd probably take about 5hp.

i just compared the v mount setup to the standard setup, and the piping length difference is simple due to the tighter angles on the cooler. if you tightened the angles of the bends on the cooler posted by EXAUNV then you would get the same affect. also using the aftermarket plenum gets rid of some piping, but makes up for it in extra plenum length.

there is an illusion to that with aircon, without aircon dyno. the illusion is that the aircon run was done second, and as most people know, turbo cars generally dyno the highest on the first run due to heat soak. and it was done in feb, which isn't the coldest month of the year. my mates built silvia lost a about 10hp every run due to heat soak at a dyno comp on a hot day.

Edited by mad082
And if you notice a throttle difference with an extra bend or two, i'll hand you a medal :(

Cause you wont notice it at all IMO.

Im with you on this one. As long as the piping is kinda right in the first place...i dont think there will be any noticable difference.

...but the overall idea is to have the radiator sitting on a 45 degree angle and your intercooler sitting on a 45 degree angle, the overall the advantage is that the pipes are shorter, and neither your intercooler or radiator are getting less air flow. The disadvantage to this setup is heat soak.

But they do get less airflow, the air has to either go up through the intercooler or down thru the radiator. It does mean though that the lsioghtly heated air that has passed through the intercoole risnt used to cool the radiator. But thats not a biggy anyway as the radiator can be sized accordingly.

The main reasons in racing are that you get better weight distribution as ther heavy (full of coolant) radiator sits lower in the car. It also helps in race cars as when 'rubbing is racing", well with the IC behind the raditor support panel it is not going to be punctured meaning loss of power.

Frankly im surprised that ppl who are concerned about this do not grab an STI cooler. Weld some sheet and baffles over it. Top mount the thing and run a water to air intercooler. You get stable inlet temps. With water you get the chance to actually lower the inlet temps below ambient (ICE BOX etc) which you can do when using ambient air as a coolign medium.

Depending if you clock your turbo housing correctly, you basically end up with a single bend and less then 5" of cooler piping. That woudl be a dramatic enough a change to actually made noticable differences when driving the car.

There are of course disadvantages, being the weight of pumps, water and the reservoir. Introducing a pump that can fail, and puts an addiional load on your electrics...but i think a top mount water to air cooler is about ideal for a road car that gets raced from time to time.

...oh and ithat engne bay pic a 350Z??? Why on earth would you rip out a gem of an engine to fit an SR20??? cRaZy Japs :)

Im with you on this one. As long as the piping is kinda right in the first place...i dont think there will be any noticable difference.

But they do get less airflow, the air has to either go up through the intercooler or down thru the radiator. It does mean though that the lsioghtly heated air that has passed through the intercoole risnt used to cool the radiator. But thats not a biggy anyway as the radiator can be sized accordingly.

The main reasons in racing are that you get better weight distribution as ther heavy (full of coolant) radiator sits lower in the car. It also helps in race cars as when 'rubbing is racing", well with the IC behind the raditor support panel it is not going to be punctured meaning loss of power.

Frankly im surprised that ppl who are concerned about this do not grab an STI cooler. Weld some sheet and baffles over it. Top mount the thing and run a water to air intercooler. You get stable inlet temps. With water you get the chance to actually lower the inlet temps below ambient (ICE BOX etc) which you can do when using ambient air as a coolign medium.

Depending if you clock your turbo housing correctly, you basically end up with a single bend and less then 5" of cooler piping. That woudl be a dramatic enough a change to actually made noticable differences when driving the car.

There are of course disadvantages, being the weight of pumps, water and the reservoir. Introducing a pump that can fail, and puts an addiional load on your electrics...but i think a top mount water to air cooler is about ideal for a road car that gets raced from time to time.

...oh and ithat engne bay pic a 350Z??? Why on earth would you rip out a gem of an engine to fit an SR20??? cRaZy Japs :)

Many valid points.

P.S the engine bay is my 4 door R32 (dedicated drift car), I wish it were a 350z.

EDIT: you obviously mean the other engine bay.. my bad :(

maplesauzer-img600x450-1152544657noya-1.jpg

Greg

Edited by EXAUNV

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



  • Similar Content

  • Latest Posts

    • Stock ECU (or more accurately stock tune) absolutely refuses to go over 10psi and behaves like you have seen. The Nistune is the same if it is the stock tune. If the Nistune chip has been tuned, the resulting tune could be literally anything for any combination of parts. The Nistune just makes the stock ECU Tunable.
    • So stock ECU does not like anything above 10 psi?  That Nistune one is just for "try" if it will be any different, I know it need to be tune for that. I know but YOU may know about these problem but i/we dont. They few little Skylines here let alone people who know anything about tham so that is why iam asking here  
    • So now we have a radiator with no attachments whatsoever. It lifts up with a particularly tight spot between the drivers side air box mount and the lower radiator outlet, but if you've got this far you will sort that too. This is the lower mounts with the rad out so you can see where the rubber bushes go, it is a straight shot upwards Done! Assembly is the reverse of disassembly, with blood less likely to be shed.
    • Right, onto the second last trick. The Air Con condenser is mounted to the front of the radiator and stays in the car when the radiator is removed. There are 2x 10mm headed self tappers holding the top of the condenser to the radiator, remove those The bottom of the condenser is attached to the radiator with clips. You need to lift the condenser out of those clips and clear (up, then forward). f**ked if  could work out how to do that last bit with the front bumper on. I hope you can, and you share the trick.  Bumper removal probably deserves its own thread one day once I've recovered the will to live, but basically you need to remove the wheels, front inner guard liners (clips and 10mm headed bolts), the self tapper between the guard and the bumper at the rearmost point of the bumper (same as an R32 that bit), any remaining clips at the top/front of the grill, an absolute bastard design with a plate that holds the top of the bumper above the headlight each side (only 1 bolt which is tricky to get to, but the plate catches 2 places on the bumper and must be removed....carefully!) and push clips between the bumper and guard under the headlight. If you've done all that you will be faced with wiring for the fog lights on both sides and in ADM Q50 RS at least, 4 nasty tight plugs on the driver's side for the ADAS stuff. So, the clips at the bottom look like this on drivers side (looking from the front) And on the passenger side (also from the front), you can see this one is already out Clearance on both of these are super tight; the condenser needs to move up but the upper rad support mount prevents that, and the radiator can't move down far because it is (rubber) mounted. Once you achieve the impossible and drop the condenser off those mounts so it does not stop the rad moving, you are good to go
    • OK, next the shroud needs to come off and there are a couple of tricks. Firstly, there is a loom from near the passenger side headlight to the fans, coolant temp sensor etc and there is no plug to undo.  In my case I was OK to leave the shroud on top of the engine so I just undid the passenger side fan plug and about 10 of the clips which gave enough free wire to put it aside. The fan plugs were super tight, the trick I used was a small falt screwdriver to push down on the release tab, then a larger flat screwdriver to lever the plug out of the fan unit....be careful with how much force you apply! If you need to remove the shroud altogether for some reason you will have to deal with all the plugs (tight) and clips (brittle)....good luck. I removed all of the clips and replaced them with cable ties that I will just cut next time. Also, in the Red Sport / 400R at least, the intake heat exchanger reservoir hose is bolted to the shroud in 2 places with 10mm headed bolts; so remove them (the hose stays in the car; no need to undo it at the t fittings down at the radiator lower mount. Once you've dealt with the HX hose and the wiring loom, there are 3x 10mm headed self tappers holding the top of the shroud to the radiator; remove those.   The shroud then lifts out of the bottom mounts where it sits on the radiator, up and onto the engine out of the way. Simples
×
×
  • Create New...