GT17 too small? - Toyota Yaris Forums

Jeemee · 06-06-2009, 02:52 PM

Just curious. If so, what size? GT20, 25, 28?

Plan to start at 7psi and maybe graduate to 8.
No engine management, for now
No intercooler right away, may do top mount later
TC or 1ZZ injectors

CASTREX · 06-06-2009, 05:09 PM

Get the GT2554R

That is the smallest garrette BB turbo.

You can get it new from $800-$900

You can get an even smaller Journal B turbo like a GT20 but eventually when you want to upgrade your set up, those units just won't put out any top end power...

You can get easily over 200 whp with the GT2554 and still have a pretty fast spool up time.

Jeemee · 06-06-2009, 05:21 PM

Thanks! Any recommendations on a place to buy?

CASTREX · 06-06-2009, 05:29 PM

Ask Garm.

I recently bought the GT25 he took out of his car...

Jeemee · 06-06-2009, 06:07 PM

Will do. Thanks

cali yaris · 06-06-2009, 06:18 PM

That's a good choice. 7 psi, no I/C and no management might give you 140-150 whp, I think.

Jeemee · 06-06-2009, 06:58 PM

That would be plenty of power. Now the question would be, how safe is that set up?

If I knew the 1nz-fe volumetric efficiency and the air flow at a given rpm, then I could read the compressor maps and decide. Anyone know?

I've been looking through some honda and scion forum classifieds, I see alot of t3/t4s for sale. I'd really prefer no lag or very little obviously. A friend of mine had a t3/t4 on his B16 but I can't remember if he had lag or not. Plus vtec made it hard to tell anyway I'm sure. Hope to come across a GT25 soon.

Jeemee · 06-06-2009, 07:29 PM

If I can get away without detonation and being lean, which I think is feasible, I think I'll be fine. I'm here to gain knowledge though so I'm open to suggestions. I may go with a TMIC, depending if I can find one designed to my likings.

cali yaris · 06-07-2009, 01:51 AM

Quote:

No intercooler and no engine management? Are you senile?

I ran my turbo without management for nearly a year. Tamago ran his with no issues either. It is possible.

The T3/T4 will create way too much lag at low boost; it's just not the right choice for your intended application.

cali yaris · 06-07-2009, 12:14 PM

Real world experience is what makes it good or bad. I am pointing out two cases where it worked fine. Do you have a real-world case where a Yaris (or other 1.5L) failed from running a low-boost application without management?

Your sarcasm does not contribute to the discussion -- your real experiences do!

Tamago · 06-07-2009, 01:03 PM

Quote:

Originally Posted by The Spectacle

Real world experience with a boosted Yaris? NO.

Garm, I respect you on this site for your contributions so I won't be disrespectful to you like I would, say Poopy Peter or somebody else as stupid. But, on this subject I think you and anyone who thinks like you are just flat wrong. Spreading the message that adding forced induction without proper engine management to ANY car is ridiculous within itself, not to mention the fact that you're doing it on a car with a 10.5CR (or whatever it is) that was designed for fuel economy. I mean, at the VERY LEAST I would recommend at least doing a rising rate FMU and a map/maf clamp but even that is still a recipe for disaster in the long term. Just because you got away with it for "almost a year" doesn't make it safe. There are kids on this site that don't know any better and if they read a post that says "you can boost your Yaris to 7psi without any engine management" they'll go do it, blow their motors and come back and blame you instead of their own retardness. Boosting a N/A motor is hard enough with the proper components...but slapping on a turbo with no supporting mods? What about the effects on ignition timing? A/F ratio? Fuel pressure? EGT's? It goes on and on...

I'm all for doing stupid shit, but I draw the line when I see people (especially someone so key on this site like you) recommending to other people to do stupid shit.

can't do a rising rate

this is a returnless fuel system buddy ;)

buy a wideband, put in some larger injectors, and go to town. the car will take care of timing at 7psi.

Tamago · 06-07-2009, 01:05 PM

jeemee, want to buy my charge pipe/intercooler? you'll need a shorter battery however.

Nexus1155 · 06-07-2009, 01:18 PM

Quote:

It goes on and on...

and on and onnnn

Strangers, waiting
Up and down the boulevard!!!!
Their shadows
Searching in the nighttttt

Jeemee · 06-07-2009, 01:22 PM

Quote:

Originally Posted by The Spectacle

Real world experience with a boosted Yaris? NO.

Garm, I respect you on this site for your contributions so I won't be disrespectful to you like I would, say Poopy Peter or somebody else as stupid. But, on this subject I think you and anyone who thinks like you are just flat wrong. Spreading the message that adding forced induction without proper engine management to ANY car is ridiculous within itself, not to mention the fact that you're doing it on a car with a 10.5CR (or whatever it is) that was designed for fuel economy. I mean, at the VERY LEAST I would recommend at least doing a rising rate FMU and a map/maf clamp but even that is still a recipe for disaster in the long term. Just because you got away with it for "almost a year" doesn't make it safe. There are kids on this site that don't know any better and if they read a post that says "you can boost your Yaris to 7psi without any engine management" they'll go do it, blow their motors and come back and blame you instead of their own retardness. Boosting a N/A motor is hard enough with the proper components...but slapping on a turbo with no supporting mods? What about the effects on ignition timing? A/F ratio? Fuel pressure? EGT's? It goes on and on...

I'm all for doing stupid shit, but I draw the line when I see people (especially someone so key on this site like you) recommending to other people to do stupid shit.

I understand where you're coming from on this. I think you've made your point so now those "kids" will read it and maybe decide against it. I'll have supporting mods. The ecu will take care of timing, enough anyway. The TC injectors will take care of the A/F ratio, a wide band for observation. Our stock fuel system is capable of handling 7 psi. I don't plan on going over that at this stage.

Jeemee · 06-07-2009, 01:24 PM

Tamago, I'd like to see some pictures. Definitely interested.

turboecho2005 · 06-07-2009, 03:08 PM

Quote:

Originally Posted by The Spectacle

Real world experience with a boosted Yaris? NO.

Garm, I respect you on this site for your contributions so I won't be disrespectful to you like I would, say Poopy Peter or somebody else as stupid. But, on this subject I think you and anyone who thinks like you are just flat wrong. Spreading the message that adding forced induction without proper engine management to ANY car is ridiculous within itself, not to mention the fact that you're doing it on a car with a 10.5CR (or whatever it is) that was designed for fuel economy. I mean, at the VERY LEAST I would recommend at least doing a rising rate FMU and a map/maf clamp but even that is still a recipe for disaster in the long term. Just because you got away with it for "almost a year" doesn't make it safe. There are kids on this site that don't know any better and if they read a post that says "you can boost your Yaris to 7psi without any engine management" they'll go do it, blow their motors and come back and blame you instead of their own retardness. Boosting a N/A motor is hard enough with the proper components...but slapping on a turbo with no supporting mods? What about the effects on ignition timing? A/F ratio? Fuel pressure? EGT's? It goes on and on...

I'm all for doing stupid shit, but I draw the line when I see people (especially someone so key on this site like you) recommending to other people to do stupid shit.

ANY engine can take 5psi of boost with a properly sized turbo. Even motors with high compression above 11:1 can be boosted to 5psi and with tunning you can push them to 8 or 9psi and with meth injection you can run 12-14psi. High compression and boost gives you the best of both worlds but hard to tune for high boost.

You don't need a built motor and tones of mods to put a turbo on your car. Id look forward to blowing up my motor so i could just rebuilt it stronger and go again.

I'd say go for it and turbo the stock motor with 7psi. Don't let The Spectacle discourage anyone.

The Spectacle · 06-07-2009, 03:29 PM

My objections aren't about boosting a stock motor, its about boosting any motor without the proper supporting modifications of which the primary, and most crucial component is engine management.

The Spectacle · 06-07-2009, 03:34 PM

Quote:

Originally Posted by Tamago

the car will take care of timing at 7psi.

Wait...what?

What?

There's so much wrong here I don't even know where to begin.

06-06-2009, 02:52 PM	#1
Jeemee XBL: Jeemee Ghost View User's Garage Drives: 2008 Yaris LB Join Date: Apr 2009 Location: Central Arkansas Posts: 199	GT17 too small? Just curious. If so, what size? GT20, 25, 28? Plan to start at 7psi and maybe graduate to 8. No engine management, for now No intercooler right away, may do top mount later TC or 1ZZ injectors __________________ _________________________________________________ Nitto Axle-Back--Tanabe DF210s--UR 23mm Rear Sway Bar--Penguin Garage 10mm Hub Spacers

06-06-2009, 05:21 PM	#3
Jeemee XBL: Jeemee Ghost View User's Garage Drives: 2008 Yaris LB Join Date: Apr 2009 Location: Central Arkansas Posts: 199	Thanks! Any recommendations on a place to buy? __________________ _________________________________________________ Nitto Axle-Back--Tanabe DF210s--UR 23mm Rear Sway Bar--Penguin Garage 10mm Hub Spacers

06-06-2009, 06:07 PM	#5
Jeemee XBL: Jeemee Ghost View User's Garage Drives: 2008 Yaris LB Join Date: Apr 2009 Location: Central Arkansas Posts: 199	Will do. Thanks __________________ _________________________________________________ Nitto Axle-Back--Tanabe DF210s--UR 23mm Rear Sway Bar--Penguin Garage 10mm Hub Spacers

06-06-2009, 06:18 PM	#6
cali yaris ULTIMATE View User's Garage Drives: 07 Yaris Turbo Join Date: May 2007 Location: Canoga Park, CA Posts: 14,859	That's a good choice. 7 psi, no I/C and no management might give you 140-150 whp, I think. __________________ Micro Image forums, online store and shop are now closed. It was a great eight year run, but it was time to focus on other things. I'm still selling parts on eBay under micro*image seller ID and customers can still make requests for anything specific.

06-06-2009, 06:58 PM	#7
Jeemee XBL: Jeemee Ghost View User's Garage Drives: 2008 Yaris LB Join Date: Apr 2009 Location: Central Arkansas Posts: 199	That would be plenty of power. Now the question would be, how safe is that set up? If I knew the 1nz-fe volumetric efficiency and the air flow at a given rpm, then I could read the compressor maps and decide. Anyone know? I've been looking through some honda and scion forum classifieds, I see alot of t3/t4s for sale. I'd really prefer no lag or very little obviously. A friend of mine had a t3/t4 on his B16 but I can't remember if he had lag or not. Plus vtec made it hard to tell anyway I'm sure. Hope to come across a GT25 soon. __________________ _________________________________________________ Nitto Axle-Back--Tanabe DF210s--UR 23mm Rear Sway Bar--Penguin Garage 10mm Hub Spacers

06-06-2009, 05:09 PM	#2
CASTREX Who said Yaris was slow? View User's Garage Drives: Yaris T-Sport 2008 Join Date: Nov 2006 Location: Costa Rica Posts: 1,287	Get the GT2554R That is the smallest garrette BB turbo. You can get it new from $800-$900 You can get an even smaller Journal B turbo like a GT20 but eventually when you want to upgrade your set up, those units just won't put out any top end power... You can get easily over 200 whp with the GT2554 and still have a pretty fast spool up time.

06-06-2009, 05:29 PM	#4
CASTREX Who said Yaris was slow? View User's Garage Drives: Yaris T-Sport 2008 Join Date: Nov 2006 Location: Costa Rica Posts: 1,287	Ask Garm. I recently bought the GT25 he took out of his car...

06-06-2009, 07:29 PM	#8
Jeemee XBL: Jeemee Ghost View User's Garage Drives: 2008 Yaris LB Join Date: Apr 2009 Location: Central Arkansas Posts: 199	If I can get away without detonation and being lean, which I think is feasible, I think I'll be fine. I'm here to gain knowledge though so I'm open to suggestions. I may go with a TMIC, depending if I can find one designed to my likings. __________________ _________________________________________________ Nitto Axle-Back--Tanabe DF210s--UR 23mm Rear Sway Bar--Penguin Garage 10mm Hub Spacers

06-07-2009, 12:14 PM	#10
cali yaris ULTIMATE View User's Garage Drives: 07 Yaris Turbo Join Date: May 2007 Location: Canoga Park, CA Posts: 14,859	Real world experience is what makes it good or bad. I am pointing out two cases where it worked fine. Do you have a real-world case where a Yaris (or other 1.5L) failed from running a low-boost application without management? Your sarcasm does not contribute to the discussion -- your real experiences do! __________________ Micro Image forums, online store and shop are now closed. It was a great eight year run, but it was time to focus on other things. I'm still selling parts on eBay under micro*image seller ID and customers can still make requests for anything specific.

06-07-2009, 01:24 PM	#15
Jeemee XBL: Jeemee Ghost View User's Garage Drives: 2008 Yaris LB Join Date: Apr 2009 Location: Central Arkansas Posts: 199	Tamago, I'd like to see some pictures. Definitely interested. __________________ _________________________________________________ Nitto Axle-Back--Tanabe DF210s--UR 23mm Rear Sway Bar--Penguin Garage 10mm Hub Spacers

06-07-2009, 03:29 PM	#17
The Spectacle View User's Garage Drives: 08 BSP LB Join Date: Oct 2008 Location: Tampa, FL Posts: 218	My objections aren't about boosting a stock motor, its about boosting any motor without the proper supporting modifications of which the primary, and most crucial component is engine management. __________________

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