Garret Turbo help

Posts specific to the 2.5 litre turbo engine

Re: Garret Turbo help

Postby Rome_BRZ » Wed Jul 11, 2012 10:02 pm

Boostaddict wrote:Totally agree with Rome. You have to be realistic about turbo upgrades. It has to be a small upgrade for more torque rather then power if the stock internals are going to be living inside for a long period of time. You will get away with it for a while and it may be a long while but you could have 230kw atw and only have it for a week. Upgrade the internals first and then the turbo or both at the same time. I will eventually chase the 300 club and i know that, just not yet. Do it once and do it properly.


Haha you might be agreeing with someone else, not me :P But the general comment that I don't think anyone will debate is that the more power you want, the less life you will get out of stock parts.
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Re: Garret Turbo help

Postby LBR37Y » Thu Jul 12, 2012 6:46 am

Thanks for The great advice boys, iv taken it all in and will start saving for the internals soon...

One day I too WILL reach the 300club but I think thats many moons away..
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Re: Garret Turbo help

Postby <GB> » Thu Jul 12, 2012 9:36 am

Gambit wrote:Expect to bleed money and lots of it. Dont kid yourself.
Otherwise if you have the cold hard cash anything is possible just add perseverance to the mix and you should be right.
Few people put their money where their mouth is, Goodluck if it ever eventuates 8)

this!!!

turbo is such a small part to consider when trying to get to these numbers... the gtx30 should be good for over 300awkw on 28psi or so.


my car has this "custom " turbo internal gate and made 270awkw on 18 psi

as far as reliability id be saving your money and get forged pistons and better bottom end bearings.
id like to see how many km these engines can last if they get driven hard with stock internals would be interesting
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Re: Garret Turbo help

Postby kiks » Thu Jul 12, 2012 9:41 am

Pick a turbo bigger.

Accept any extra lag.

More flow at less boost is always better. I'd take 18psi on a gt40 over 28psi on a gt30 for the same 300kw atw any day. And 21psi on a 35 over both of them. Cool air and efficient VE = bettererer
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Re: Garret Turbo help

Postby dr20t » Thu Jul 12, 2012 11:33 am

Above two posts are correct ESP kiks' one

However GB trust me these motors with stock internals are given a battering

From the horse's mouth himself he says one of them (a 2.5 too) is driven like it's stolen every single day for over 40kms daily
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Re: Garret Turbo help

Postby <GB> » Thu Jul 12, 2012 11:37 am

dr20t wrote:Above two posts are correct ESP kiks' one

However GB trust me these motors with stock internals are given a battering

From the horse's mouth himself he says one of them (a 2.5 too) is driven like it's stolen every single day for over 40kms daily

i dont doubt they last for a while im talking will they do 100k or 200k or 50 etc, the rb30 is the same guys are making over 300rwkw on stock engines they get from the wreckers for a few hundred $$$
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Re: Garret Turbo help

Postby senator » Thu Jul 12, 2012 11:49 am

<GB> wrote:
dr20t wrote:Above two posts are correct ESP kiks' one

However GB trust me these motors with stock internals are given a battering

From the horse's mouth himself he says one of them (a 2.5 too) is driven like it's stolen every single day for over 40kms daily

i dont doubt they last for a while im talking will they do 100k or 200k or 50 etc, the rb30 is the same guys are making over 300rwkw on stock engines they get from the wreckers for a few hundred $$$



At least 2 of them have at least 100k plus on the clock.

btw it’s not the test of time, it comes down to the tune, I know of 3, 2.5ltr all with less have than 30k on clock both suffer big end bearing issues.

All had signs of detonation and were not modified.
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Re: Garret Turbo help

Postby dr20t » Thu Jul 12, 2012 12:38 pm

Also - in reaponse to a comment earlier that you should be chasing more torque not power from an unopened motor - the thing to remember is that peak cylinder pressure (and therefore the highest point of possible detonation) is at peak torque not peak power.

So an unopened motor built for more torque will have a higher propensity to go bang than a higher peak power motor
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Re: Garret Turbo help

Postby <GB> » Thu Jul 12, 2012 2:07 pm

senator wrote:
<GB> wrote:
dr20t wrote:Above two posts are correct ESP kiks' one

However GB trust me these motors with stock internals are given a battering

From the horse's mouth himself he says one of them (a 2.5 too) is driven like it's stolen every single day for over 40kms daily

i dont doubt they last for a while im talking will they do 100k or 200k or 50 etc, the rb30 is the same guys are making over 300rwkw on stock engines they get from the wreckers for a few hundred $$$



At least 2 of them have at least 100k plus on the clock.

btw it’s not the test of time, it comes down to the tune, I know of 3, 2.5ltr all with less have than 30k on clock both suffer big end bearing issues.

All had signs of detonation and were not modified.

for sure tune has heaps to do with it i look at it from an engineering point, say all components in ya car are designed to fail at 3-4 times the force or strain that they encounter in a normal life so when you push power levels double what they should then they will most likley be ok the main issue you can have is an increased wear and tear on moving parts like bottom end bearings ect then you have to consider faulty parts when manufactured and who put it together, was the car serviced correctly, its a bigger picture
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