Hi,
Don't worry this is not a tit for tat. You make a valid point by saying call them. I realise its some thing you have read and most probably dont really have any experience on so you have hit the nail on the head. I am going to call Garrett and ask them what there views on the matter.
I know the answer will be if they are used for the intended usage then no cutbacks. But I will press them for the non standard high power end application.
A 6 cylinder 3.6 ltr car pushing 700 bhp wont put the same thermal stresses on a Turbo as a 4 cylinder 2 ltr car pushing 500 bhp.
Now if they say that their manufacturing techniques mean that all their turbos no longer need cutbacks for longevity no matter what application or powere output then I am going to post my findings back to you. I Cant say fairer than that.
For sure, if that is the case why do it, but I will be honest with you and say I dont think they will commit themselves to saying "Don't do it regardless of the application".

Cheers
Frank

 

Are you saying that your stock K24's with flash and exhaust make 600 hp crank + ? How is that possible ?

 

K24/18gs are not garrets... nor do they run 30 psi like garretts to be efficient... running 540rwhp is not a HIGH HP application....
We've done probably 5 of such set ups and got good results on actually 600 and 700 rwhp applications...
just my observation....

 

That's 500whp. Not really a lot and probably at 1.2 or 1.3 bar?

 

i was asking only about the swap between k16 and k24 and everybody jumped on the 18g's

the cost to send them to blouch and them back to romania is bigger that the price that i want to pay for them, not a good business

 

shipping should not be more then $150 each way... I sent turbos to England and Poland... the cost was actually even less... but Blouch will not send overseas you would have to go with a company...
Either way the power you get is worth a few hundred dollars...

 

Stock k24's with simple flash and exhaust can't make 500wrhp, no way, they simply can't flow so much air !! I'm running an X50 with exhaust, tune for 1.2/1.3bar, headers, hoses, dvs, and figure I'm probably making 530/540ps... I recently raced an FVD 997tt with exhaust, headers etc, rated at 570ps and there was nothing in it to 180mph.

FVD themselves would probably only rate their X50 tune with exhaust at something like 520ps, so how is the car making that at the wheels ?

Perhaps Markski can shed some light on this.... Mark can K24's stock, flow 600hp+ ?

 

If 18g's can flow 700whp, why can't regular K24's flow 500whp? I believe there are guys here in the states that are making over 500whp with K24's. Hopefully Mark can elaborate...

 

One of my first mods years ago was a fvd race k24 stage 3 flash exhaust filter DVs and I dynoed 480 max. It was peaky ran 1.1 flickering 1.2 ran 11.6 and trapped 124 consistantly. That was my car. That's all I can say.

 

Thanks Forest...

 

Throw on an exhaust and you've got 500 rwhp. My 2 had a flash, DVs, 1 bar springs, and a Europipe II and it produced 506 rwhp, so it is possible. It was after all on a dynojet infamous for generous numbers.

 

i dont know where you are getting your numbers you can have them sent for much cheaper.

anyway i would look for a set of used 18gs here online you will find some at a good deal ,sell your current ones and there you go , get the programing you need from markski and your set .

 

I would encourage you to look at a K24 compressor map, as that wheel can do 29-30 lb/min of air @ 1.3 bar @ well above 70% efficiency. That's plenty for 500rwhp.

 

Sure they can....

And they do...
-----------------------------------------------------------
RWD
K24s
Cargraphic Exhaust
Bosch Motorsports 5bar fpr
FVD Tune
93 Octane
1.1bar peak, dropping down to 0.9bar

I feel like the K24s have even more potential with upgraded wastegates, dvs, a bit more boost then i'm running, maybe water/meth, maybe intake (this dyno is with stock intake, stock air filter)

 

Stock K24's with a flash and exhaust can certainly produce a quick car (as Prodigy has proven), but they are not even close to a K24/18G setup. They add another 100rwhp/100rwtq.

They are truly in a different league.