Jump to content
SAU Community

Recommended Posts

hey guys im in the process of purchasing an r33 turbo to replace my r32 stock turbo and was thinking of changing my smic for a r34 gtt one... just want your thoughts on if it would be a good investment in getting one of those. im not really here to chase alot of power though if it would help a fair bit in air ratio wise, is it good value for money in worth getting.

cheers guys,

Link to comment
https://www.sau.com.au/forums/topic/306854-r34-gtt-vs-r32-gtst-smic/
Share on other sites

The R34 SMIC intecooler is better but still junk, it heatsoaks badly and only delays the inevitable. FMIC are cheap nowadays and just jup have returb flow ones for next to nothing. I got 34 gtt ones laying around like dead flys.

I did make 198 rwkw, when my car had the standard R33 turbo and R34 SMIC. So it is definitely an improvement over the standard R32 or R33 intercooler.

The reason I stuck with a side mount initially, was because I didn't want the increased length of piping (and reduction in throttle response) when combined with the standard plenum.

In the end I had to go for a front mount, but changed the plenum at the same time to minimise the piping.

i still call bullshit on it being an improvement

any core could make 200rwkw

even a top mount core could make a single 200rwkw pass

but after that run, its heatsoaked and useless for anything further

thats where the difference between the core and its location that matters

once its heatsoaked, how quickly can it ditch all the heat thats stored in it

Paul,

Calling Bullshit is a bit strange? A larger core has to be somewhat of an improvement, as the core has more surface area.

This extra surface area will take more heat from the air before it gets heat soaked (as there's more alloy to heat up).

It's common knowledge that a front mount will be a much greater improvement, due to it's location and the extra core size. But if the larger size of the side-mount core didn't make a difference, why did Nissan progressively increase it's size over the years?

Ryno

  • 1 month later...
i still call bullshit on it being an improvement

any core could make 200rwkw

even a top mount core could make a single 200rwkw pass

but after that run, its heatsoaked and useless for anything further

thats where the difference between the core and its location that matters

once its heatsoaked, how quickly can it ditch all the heat thats stored in it

I call bullshit on the bullshit call too... it is simple matter of physics and the R34 SMIC has more surface area, volume and weight (approx 50% more!!!).

Unless you're also calling bullshit to thousands of years of science that means: more flow, a bigger heat sink and better heat transfer capabilities. ;)

With some simple improvements to ducting and air flow (e.g. R34 air duct on the front, some foam rubber to seal it to the SMIC and more venting in the inner guard to let the hot air out) it is a big improvement over the stock R33 SMIC.

Yes a FMIC is better but a half decent one also costs $800+ and requires some effort to fit, not to mention the lack of stealth (if that's your thing).

If you have mild mods and are using the stock ECU/turbo the R34 SMIC upgrade at under $200 is a bargain!

I got instant power gains and much better response due to this mod, I also added an 8inch thermofan (400CFM) to aid cooling for good measure.

P.S. Getting heatsoaked on a dyno is indicative of nothing, unless you drive your car on one...

I call bullshit on the bullshit call too... it is simple matter of physics and the R34 SMIC has more surface area, volume and weight (approx 50% more!!!).

Unless you're also calling bullshit to thousands of years of science that means: more flow, a bigger heat sink and better heat transfer capabilities. :D

With some simple improvements to ducting and air flow (e.g. R34 air duct on the front, some foam rubber to seal it to the SMIC and more venting in the inner guard to let the hot air out) it is a big improvement over the stock R33 SMIC.

Yes a FMIC is better but a half decent one also costs $800+ and requires some effort to fit, not to mention the lack of stealth (if that's your thing).

If you have mild mods and are using the stock ECU/turbo the R34 SMIC upgrade at under $200 is a bargain!

I got instant power gains and much better response due to this mod, I also added an 8inch thermofan (400CFM) to aid cooling for good measure.

P.S. Getting heatsoaked on a dyno is indicative of nothing, unless you drive your car on one...

thier crap fullstop they are designed for 6psi and daily driving not 12-odd psi and any sort of decent spirited driving. A quick datalog of AIT quickly proves this. I can listr about 6 customers with ARC SMIC and r34 SMIC that are having issues on anything warmer than 25 degree days.... track days in anything over that requires stupid numbers removed from the timing map.. few are still on std turbos. Add a decent turbo and the issue comes to fuition twice as quick.

one rb20 skyline with gt2530 has an ait (pfc djetro on rb20) that takes timing out as the temp increases, it turned out after 3 laps of winton the total timing was reduced so much to stave off det that when i ran it on the dyno with those timing figures it only made 170rwkw..... std power, fitted a cheap 400 turnflow kit and it is sweet.

if someone is happy to pay $200 (like you reckon) for a r34 smic be my guest i have a few id be happy to part with.

  • 1 month later...
  • 2 weeks later...

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

    • Can you log IAT? Whilst WTA coolers have their place, doing any sort of sustained run is not one of them There are fixes that slow down the heat soak, like ice boxes, which don't last that long, and interchillers, which are fairly expensive, up grades to the WTA cooling radiator, which may require a bigger pump, and upgrades to the reservoir size,  and upgrades to the cooling fans, but, it all still heat soaks, and takes ages to come down in hot weather  For a turbo, that isn't locked into WTA like my PD blower is, can you not possibly swap to a nice air to air intercooler????, it would be better for sustained runs then, and have alot less things that could go wrong in my opinion 
    • So, the other thing I've sorted is a baseline dyno run up at Unigroup's new location. The auto trans was a little unco-operative by both shifting down when the throttle was floored on the dyno (so Mark had to ramp it up more slowly than in a manual) and also by shifting up at 6,000 even in sports mode instead of the indicated redline of 7,000 Still, on a hot day it made 240rwkw at 16psi which seems about right for 300kw (400hp) through an auto at the wheels.  The shape of the curve is not quite right because it was not full throttle to about 4,500 to stop it kicking down, but until I can get a tune on the auto trans control this was the best we could do.....full boost will be well below 5,000 once that is sorted, I'll get some data logs when I can to confirm For comparison, the R32 made 255 at 12psi (at 4,500) on the same dyno with tune, n1 turbos, cam gears, big exhaust but otherwise all standard so the v37 is likely a little better out of the box. One thing that is very clear is that the standard water to air intercoolers are not up to sustained use at full throttle in warm ambient temps. After about 5 runs (so only a few minutes full throttle), it was pulling boost and timing and dropping 10-15% power. Unfortunately I didn't get that printout and the Unigroup guys are away at the moment, will try and get hold of it on their return. So, looks like a healthy engine to start modifying and the only real area of concern is the w2a heat exchangers which the aftermarket has plenty of solutions for    
    • I maintain it actually looked really nice in person. So much so that I thought "No, this is illegal" but there it was, clear as day. I think we can easily call the wing and wheels/height to be transformative. Not saying it's better than the GR Whatever, or the 86, or the WRX STI or anything of that sort (the internet says it all bolts up so you can buy best of all worlds?) but it's still at least a thing and not nearly AS bad as people say.
    • That's less offensive than the previous gen.....except for all that ugly black tupperware around the edges. Blerck!
    • I leant out the window recently and took a picture of this new WRX. It looked real damn fine in person. It's faster around a track (stock) than a (stock) GR Yaris. It's much more practical despite being heavier. It's significantly cheaper. This gen tunes really well, much better than others. .... I think they're probably a lot better than people expect.
×
×
  • Create New...