EJ255 into a Porsche Boxster - Page 20

RonW · 02-06-2012, 05:22 PM

nicely done! sounds mean. surprised how quite it is since i dont recall you having a muffle on in it. what track? do they have a max db for noise? i always need a day or so to shake out the cobwebs and feel comfortable. great job.

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kcpaz · 02-06-2012, 05:36 PM

No muffler at all and the exhaust is only 24" long past the turbo. I think the video makes it seem quieter than it really is. For some reason, the turbo whine seems to get picked up a lot by the GoPro.

The track is called Chuckwalla Valley Raceway. It's a pretty cool track, but it's literally out in the middle of nowhere.

kcpaz · 02-06-2012, 11:10 PM

YouTube (Short URL)

Gixhost · 02-07-2012, 08:58 AM

This is such an amazing build.

billyr2.5 · 02-13-2012, 12:54 AM

you guys it turned out awesome! WAY better than i imagined!!! Great build thread

Jaxx · 02-13-2012, 10:06 AM

any data on how effective the IC placement worked out

kcpaz · 02-13-2012, 10:52 AM

Quote:

Originally Posted by Jaxx

any data on how effective the IC placement worked out

Nothing scientific yet. We are going to add a temp sensor to the intercooler next time we have to pull it out of the car.

The unscientific answer however is that it works VERY well. We came in from a hot-lapping session and did the ol' hillbilly, one hand on one side of the intercooler and one hand on the other and the difference was amazing.

914er · 02-28-2012, 05:49 AM

GREAT!! espacially this part! SO this is the enigne which should be in a 914ten

And for anyone who was wondering if the Boxster cooling system could handle the cooling needs of the Subaru turbo engine... this is what we had to do just to get the car to run at normal operating temps. This was with a restrictor plate in place of the functioning thermostat. We are going to have to go back to a thermostat. Without any tape on the front end, the water temps never got above 125 degrees while driving.

SteeltownEJ · 02-28-2012, 09:41 PM

Porscharu! Good stuff!

kcpaz · 03-05-2012, 06:41 PM

From this past weekend...

Precision Chassis Works Subaru Powered Boxster CalSpeed - YouTube

SubaruWRXtreme · 03-17-2012, 07:50 PM

Car approaches and judging by the the exhaust tone... oohh it's Subaru coming WOW WTF that's a Porsche LOL

7m-gtte · 03-29-2012, 05:20 PM

Any more updates?

kcpaz · 03-30-2012, 01:47 PM

Quote:

Originally Posted by 7m-gtte

Any more updates?

Working on a street version next

spec.B - autox · 04-01-2012, 11:36 AM

This is a ridiculous build!

So, since no one else has asked the question... IF I were to provide you with the motor, and the chassis, how much to build one of these?

Please PM me with the details, including turn around time

kcpaz · 04-02-2012, 11:02 PM

Quote:

Originally Posted by spec.B - autox

This is a ridiculous build!

So, since no one else has asked the question... IF I were to provide you with the motor, and the chassis, how much to build one of these?

Please PM me with the details, including turn around time

There's no short answer to that question. If you really want to know figures beyond simple entertainment, send me an email to precisionchassis@gmail.com

my928s4 · 06-10-2012, 07:59 PM

Great thread, wish I had half your fabrication skills!

Chris

kcpaz · 10-02-2012, 11:57 PM

Quick update...

Based on the over cooling we experienced during testing, we decided to try out a new intercooler set-up. Without adding any serious complexity, or reconfiguring the front of the car, we were able to add an air to water intercooler system and get rid of the roof scoop. We will be utilizing the center radiator from the engine cooling system as a heat exchanger rather than using it for engine cooling, then just replace the air to air intercooler with a new intercooler, plumb a few water lines and add an electric pump. Basically the same components we will be using in the street cars, but with a slightly larger intercooler core. We will be testing the new set-up this weekend, but already, the benefits are a reduction in weight (up high and out back), reduction in aerodynamic drag, lower center of gravity, and better rearward visibility. We just got back from some dyno tuning and the car made 430whp and 380ft/lbs. The car now weighs 2651lbs with a half tank of fuel and an empty cool shirt cooler. There's another 20lbs that will be coming out over the coming weeks. Leakdown numbers are still right around 10% (cold) which is what they've been since the first test day.

rkjunior · 10-03-2012, 09:44 AM

This thing is awesome

10-02-2012, 11:57 PM	#492
kcpaz Scooby Newbie Member#: 194611 Join Date: Nov 2008 Location: Gilbert Arizona Vehicle: 1998 Legacy GT Mexico Blue (not red)	Quick update... Based on the over cooling we experienced during testing, we decided to try out a new intercooler set-up. Without adding any serious complexity, or reconfiguring the front of the car, we were able to add an air to water intercooler system and get rid of the roof scoop. We will be utilizing the center radiator from the engine cooling system as a heat exchanger rather than using it for engine cooling, then just replace the air to air intercooler with a new intercooler, plumb a few water lines and add an electric pump. Basically the same components we will be using in the street cars, but with a slightly larger intercooler core. We will be testing the new set-up this weekend, but already, the benefits are a reduction in weight (up high and out back), reduction in aerodynamic drag, lower center of gravity, and better rearward visibility. We just got back from some dyno tuning and the car made 430whp and 380ft/lbs. The car now weighs 2651lbs with a half tank of fuel and an empty cool shirt cooler. There's another 20lbs that will be coming out over the coming weeks. Leakdown numbers are still right around 10% (cold) which is what they've been since the first test day. Last edited by kcpaz; 10-03-2012 at 12:02 AM.

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02-06-2012, 05:22 PM	#476
RonW Scooby Newbie Member#: 103663 Join Date: Dec 2005 Location: S.F Bay Area Vehicle: 1968 Porsche 912 STi v8 Spec-C conversion	nicely done! sounds mean. surprised how quite it is since i dont recall you having a muffle on in it. what track? do they have a max db for noise? i always need a day or so to shake out the cobwebs and feel comfortable. great job. * Registered users of the site do not see these ads.

02-06-2012, 05:36 PM	#477
kcpaz Scooby Newbie Member#: 194611 Join Date: Nov 2008 Location: Gilbert Arizona Vehicle: 1998 Legacy GT Mexico Blue (not red)	No muffler at all and the exhaust is only 24" long past the turbo. I think the video makes it seem quieter than it really is. For some reason, the turbo whine seems to get picked up a lot by the GoPro. The track is called Chuckwalla Valley Raceway. It's a pretty cool track, but it's literally out in the middle of nowhere.

02-07-2012, 08:58 AM	#479
Gixhost NASIOC Supporter Member#: 180111 Join Date: May 2008 Chapter/Region: MAIC Location: Land of Ham, MD Vehicle: * 2004.114.3 STi Aspen White	This is such an amazing build.

02-13-2012, 12:54 AM	#480
billyr2.5 Scooby Specialist Member#: 53663 Join Date: Jan 2004 Chapter/Region: SWIC Location: scottsdale, az Vehicle: 2011 WRX WR Blue 2000 Coupe, Sedona Red	you guys it turned out awesome! WAY better than i imagined!!! Great build thread

02-13-2012, 10:06 AM	#481
Jaxx NASIOC Supporter Member#: 177 Join Date: Aug 1999 Chapter/Region: NWIC Location: Boise,Idaho,USA Vehicle: The 93 Imp W/EJ20K flat black	any data on how effective the IC placement worked out

02-28-2012, 05:49 AM	#483
914er Scooby Newbie Member#: 263953 Join Date: Nov 2010	GREAT!! espacially this part! SO this is the enigne which should be in a 914ten And for anyone who was wondering if the Boxster cooling system could handle the cooling needs of the Subaru turbo engine... this is what we had to do just to get the car to run at normal operating temps. This was with a restrictor plate in place of the functioning thermostat. We are going to have to go back to a thermostat. Without any tape on the front end, the water temps never got above 125 degrees while driving.

02-28-2012, 09:41 PM	#484
SteeltownEJ Scooby Newbie Member#: 288313 Join Date: Jul 2011 Chapter/Region: MAIC Vehicle: 2010 Impreza 2.5i Spark	Porscharu! Good stuff!

03-17-2012, 07:50 PM	#486
SubaruWRXtreme Scooby Newbie Member#: 307112 Join Date: Jan 2012 Chapter/Region: International Location: Curacao Vehicle: 2009 WRX (hatch) Satin White Pearl	Car approaches and judging by the the exhaust tone... oohh it's Subaru coming WOW WTF that's a Porsche LOL

03-29-2012, 05:20 PM	#487
7m-gtte Scooby Newbie Member#: 192102 Join Date: Oct 2008 Chapter/Region: South East Location: Dublin, Ga Vehicle: 2003 WRX WRB VF-39	Any more updates?

04-01-2012, 11:36 AM	#489
spec.B - autox Scooby Newbie Member#: 209699 Join Date: Apr 2009 Chapter/Region: South East Location: Madeira Beach Vehicle: 2009 STI DGM	This is a ridiculous build! So, since no one else has asked the question... IF I were to provide you with the motor, and the chassis, how much to build one of these? Please PM me with the details, including turn around time

06-10-2012, 07:59 PM	#491
my928s4 Scooby Newbie Member#: 158412 Join Date: Sep 2007	Great thread, wish I had half your fabrication skills! Chris

10-03-2012, 09:44 AM	#493
rkjunior Scooby Specialist Member#: 112220 Join Date: Apr 2006 Chapter/Region: NESIC Location: Waltham, MA Vehicle: 2011 WRX 5DR Premium DGM	This thing is awesome