Forced Performance Hta Turbos

[Piggaz]

All the air the engine consumes must come through the comp wheel. If the comp wheel can only flow "x" amount of air, that volume wouldn't change, or would it?

[afb312]

The smaller engine has to run at a higher boost pressure to make the same power. Therefore the position on the turbo compressor map will change. Usually to less efficiency and so higher temperature.

[XKLABA]

All the air the engine consumes must come through the comp wheel. If the comp wheel can only flow "x" amount of air, that volume wouldn't change, or would it?

All being equal ( cams comp ratio etc etc ) a 2.6 will consume less air then a 3.0 which means the same turbo would have to spin faster to hold the same boost level on a 3.0, so while a comp wheel can only flow so much air the different size engine will pass more air

Which is the issue I'm having, 28psi through a 3.0 is to much air flow for the GT28 turbine side to pass creating to much backpressure

[Tonba]

^ A lot of other things play into it as well..

• Cyl Head Efficiency (Porting, Valves, Cams, etc)
• RPM
• Intake Size & 'Restrictions'
• Exhaust Size & 'Restrictions'
• Turbine Housing Size

[Lithium]

So a new late model EVO record has been set today - STM in the US raced their EVO 8 RS drag car which runs a .85a/r T3 Super 99 HTZ at Maryland International Raceway and started out the day running a loose 8.7 @ 181mph and gradually whittled the times down, first breaking the 4 year old record of 8.34 @ 169mph with a 8.28 @ 178mph - then taking it further down with a 8.09 @ 182.5mph with a 1.4s 60ft. It has definite 7s power, just needs to hook a bit better but probably less and less likely with the temps dropping quickly over in the US.

>180mph on a T3 turbo.... there are a lot of people who raise eyebrows at some of the dyno figures thrown around for some of these turbos, but that is HAULING!

[Tonba]

Lith,

There is an Evo 6 currently being built in Sydney with a Super 99 on a 2ltr I believe. Dedicated drag car. Expect it to run faster then STM. (Much lighter..)

[Lithium]

Yeah Mat showed me that, awesome! The STM one is pretty light btw

[BEN 0]

Sorry to wake this thread up, just finished reading it all and have to say thanks for the information.

Has any of the builds in progress from last year come to any results?

Has anyone got specific results on rb25 hta3076 with hydraulic head?

Cheers

[shnaped_second]

Sorry to wake this thread up, just finished reading it all and have to say thanks for the information.

Has any of the builds in progress from last year come to any results?

Has anyone got specific results on rb25 hta3076 with hydraulic head?

Cheers

Mines still coming along. Not too long it should be running but ive said that a few times now.

[Mick_o]

Looking forward to your results Brad. Even though my love for FP is all but gone

[34GeeTeeTee]

Sorry to wake this thread up, just finished reading it all and have to say thanks for the information.

Has any of the builds in progress from last year come to any results?

Has anyone got specific results on rb25 hta3076 with hydraulic head?

Cheers

Mine is still kicking

Looking forward to your results Brad. Even though my love for FP is all but gone

No FP love?

[Mick_o]

No alot of hate actually Mat

[shnaped_second]

No alot of hate actually Mat

What happened Mick?

[34GeeTeeTee]

No alot of hate actually Mat

What happened Mick?

^ This!

[Mick_o]

Dodgy designed turbo leaks oil like a tanker.

They won't warrant it as they dont make them anymore and they flat out blame the oil leaks on crank case pressure not their product.

Its a well known thing about them in the evo world.

I know of 4 other people with this issue with as little as 1500km on their turbos. Took my stock turbo to be modified at GT PUMPS & he currently has 4 of them that are leaking oil the only fix is to convert them to Journal bearing.

I spent $2700 on a turbo that done 3000km and isnt worth its weight in scrap

VERY disappointed as it took them months to build it and its f**ked in less time than it took to be built

[34GeeTeeTee]

Oh wow!

Never heard of that

Sorry to hear mate... But at least you share your experience for others to see... I think FP are amazing based on my experience alone but its good to see both sides of the coin especially if people are looking to buy the same thing!

[AngryRB]

Maybe matts turbo was build on a Tuesday and Mick's on a a Friday arvo near knock off time

Don't they use a garrett cartridge?

Edited February 11, 2015 by AngryRB

[timmy_89]

Curious, are the other turbos you know of having the same issue the exact same model? Or varying models?

[Mick_o]

Thanks Matt oh well live and learn mate. I did love the turbos performance which is why it sucks so much!

It only seems to be a stock frame Mitsubishi issue.

The evo turbos they build run their own custom dual ceramic ball bearing cartridge which is the flop.

But turbos like Matts yeah they are a modified garrett basically with the HTA comp wheel

http://www.sau.com.au/forums/topic/453377-evo-9-turbo-kit-sydney/

Edited February 11, 2015 by Mick_o

[34GeeTeeTee]

Sounds like its isolated to just that style of turbo Dissapointing to say the least mate!

I wouldnt hesitate to buy another one through them due to my experience, but sucks to hear you had issues!