Welcome to the North American Subaru Impreza Owners Club Wednesday April 1, 2015
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC General > Motorsports > Autocross

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 04-28-2012, 11:57 PM   #326
Storm
Scooby Guru
 
Member#: 5218
Join Date: Mar 2001
Chapter/Region: MWSOC
Location: SAUL'S Motorsports
Vehicle:
96L Most Over-
Developed Beater

Default

Nice work on the control arms. That should shift some weight to the rear as well....I shifted my balljoint locations forward as well, but by reworking the aluminum arms and rear bush housings. I am within my +/- 1" allowance.

Jay
* Registered users of the site do not see these ads.
Storm is offline   Reply With Quote
Old 04-29-2012, 12:44 AM   #327
speedyHAM
Scooby Specialist
 
Member#: 48377
Join Date: Nov 2003
Chapter/Region: MWSOC
Location: "They eat fish soaked in lye"
Vehicle:
1996 Gutted, built
XP class Impreza L

Default

Quote:
Originally Posted by Storm View Post
Nice work on the control arms. That should shift some weight to the rear as well....I shifted my balljoint locations forward as well, but by reworking the aluminum arms and rear bush housings. I am within my +/- 1" allowance.

Jay
Shhh! You don't want to share all our secrets do you?!?
speedyHAM is offline   Reply With Quote
Old 04-29-2012, 12:04 PM   #328
biknman
Scooby Newbie
 
Member#: 47915
Join Date: Nov 2003
Chapter/Region: MAIC
Location: Parkville, MD
Vehicle:
2003 GG HC TT
08 STI 06 OBXT 96 GF

Default

Quote:
Originally Posted by speedyHAM View Post
My wheels have a 7" backspace right now, but I have to use a little bit of spacer on the hub to fit them. I've run 6" backspacing in years past with no problems, took a lot of measurements this winter and these fit just barely. There were a few other small changes that had to be made such that they will work.

The geometry change with the new arms is to increase caster and move the wheels a bit forward. They also have the end link mounting points attached to be able to run standard WRX and STI front sway bars, although that may be wasted effort as I'm thinking about making some quick changeable custom front swaybars. They are also stronger and lighter than stock arms, so that helps.
Awesoome! I'm in the same mode going to use some NSACAR style 37 1/2 long with 1 1/4 48 spline or 1 3/4 49 spline ends with custom arms (cockpit adjustable blades) and end links so I can mount the bars where ever I want them. On my front LCA's; I'm fabing the rear LCA mount to the ball joint location mount section of the arms with a 3/4 clevis LH threaded at ball joint connecting with 1.5 x .250 DOM tubing to a 3/4 heim RH thread at the frame mount location so I can do what you did and have some on car adjustability.

I have no pis yet but they will be similar to these from a fellow Porsche race car:

Last edited by biknman; 04-29-2012 at 12:22 PM.
biknman is offline   Reply With Quote
Old 04-30-2012, 02:43 AM   #329
speedyHAM
Scooby Specialist
 
Member#: 48377
Join Date: Nov 2003
Chapter/Region: MWSOC
Location: "They eat fish soaked in lye"
Vehicle:
1996 Gutted, built
XP class Impreza L

Default

Quote:
Originally Posted by biknman View Post
Awesoome! ... with 1.5 x .250 DOM tubing...
Just a note, my tubing is less than half that weight and it's over-designed for strength and stiffness. You could easily get away with 1.5 x .125 DOM.
speedyHAM is offline   Reply With Quote
Old 04-30-2012, 06:45 AM   #330
biknman
Scooby Newbie
 
Member#: 47915
Join Date: Nov 2003
Chapter/Region: MAIC
Location: Parkville, MD
Vehicle:
2003 GG HC TT
08 STI 06 OBXT 96 GF

Default

Quote:
Originally Posted by speedyHAM View Post
Just a note, my tubing is less than half that weight and it's over-designed for strength and stiffness. You could easily get away with 1.5 x .125 DOM.
Yeah I thought about that but most of the hills (I'm a hill climb racer) have pretty good jumps and at least a corner or two where it's possible to drop a tire of the edge of the tarmac. Plus the vendor I used for the 3/4 x 3/4 hiems and clevis the tube nuts that come with the kit are for use with 1.5 x .250 so.
biknman is offline   Reply With Quote
Old 07-08-2012, 01:06 AM   #331
ryansport22
Scooby Newbie
 
Member#: 157775
Join Date: Aug 2007
Chapter/Region: NWIC
Location: Eugene, OR
Vehicle:
2006 WRX
Black

Default

SpeedyHam, with your rear mount radiator setup do a couple of good fans keep it cool for autox use? Or does it take a lot of ducting like the time attack cars? Also have you found the stock water pump to be sufficient or did you have to go with a aftermarket electric pump?

I am at 62% front weight now and would love to drop that to 59%. The level of engineering that the time attack Subaru's use for their rear mount radiators is a little past my skills but I have a feeling that for autox only something less complicated could work.

Thanks in advance for the help!
ryansport22 is offline   Reply With Quote
Old 07-11-2012, 10:39 PM   #332
speedyHAM
Scooby Specialist
 
Member#: 48377
Join Date: Nov 2003
Chapter/Region: MWSOC
Location: "They eat fish soaked in lye"
Vehicle:
1996 Gutted, built
XP class Impreza L

Default

Quote:
Originally Posted by ryansport22 View Post
SpeedyHam, with your rear mount radiator setup do a couple of good fans keep it cool for autox use? Or does it take a lot of ducting like the time attack cars? Also have you found the stock water pump to be sufficient or did you have to go with a aftermarket electric pump?

I am at 62% front weight now and would love to drop that to 59%. The level of engineering that the time attack Subaru's use for their rear mount radiators is a little past my skills but I have a feeling that for autox only something less complicated could work.

Thanks in advance for the help!
I have no ducting what-so-ever. For an autoX the fans are enough to keep the engine cool. If ducting were legal I would do it in a heartbeat, but it's not legal in Prepared classes as much as I can figure.

The stock water pump is sufficient for my setup, but I did remove all the extra coolant loops and the thermostat. Those things help with cooling a lot.
speedyHAM is offline   Reply With Quote
Old 07-12-2012, 08:57 AM   #333
Storm
Scooby Guru
 
Member#: 5218
Join Date: Mar 2001
Chapter/Region: MWSOC
Location: SAUL'S Motorsports
Vehicle:
96L Most Over-
Developed Beater

Default

On the subject of removing the extra cooling loops......I have found that with my setup, being a traditionally front mounted radiator, the lack of warm water cycling back into the pump from the heater circuit was keeping the t-stat closed far too long. The motor basically had to heatsoak itself to the point where it would finally open and move the (now 220-230F) coolant through the radiator. A gutted t-stat seemed to flow coolant through the radiator too quickly and would creep hotter and hotter.

4 or 5 3/16" holes in a stock t-stat allows warm water to cycle through the radiator, allows the stat to open when it's supposed to and doesn't increase the flow so much that the coolant doesn't actually cool through the radiator. I don't see temps going past 190-200F now....which is a far cry from what I was seeing earlier this season.

Jay
Storm is offline   Reply With Quote
Old 07-12-2012, 02:17 PM   #334
Homemade WRX
Scooby Guru
 
Member#: 33782
Join Date: Mar 2003
Chapter/Region: MAIC
Location: 3MI Racing LLC
Vehicle:
96 bastard child
search FIRST, then PM!!!

Default

^^^we actually punched holes in our T-stat for the TA car (re-radiator), thinking that-that might be an issue. Now I'm glad we did...nothing like shaking down a new setup at UTCC
Homemade WRX is online now   Reply With Quote
Old 07-12-2012, 02:38 PM   #335
jamal
Scooby Guru
 
Member#: 71875
Join Date: Oct 2004
Location: Montana
Vehicle:
98 2.5GT
my wheels fit

Default

Quote:
Originally Posted by Storm View Post
On the subject of removing the extra cooling loops......I have found that with my setup, being a traditionally front mounted radiator, the lack of warm water cycling back into the pump from the heater circuit was keeping the t-stat closed far too long. The motor basically had to heatsoak itself to the point where it would finally open and move the (now 220-230F) coolant through the radiator. A gutted t-stat seemed to flow coolant through the radiator too quickly and would creep hotter and hotter.

Jay
The other option would be to run a short loop of hose from the outlet to the inlet of the heater pipes.
jamal is offline   Reply With Quote
Old 07-12-2012, 03:07 PM   #336
ryansport22
Scooby Newbie
 
Member#: 157775
Join Date: Aug 2007
Chapter/Region: NWIC
Location: Eugene, OR
Vehicle:
2006 WRX
Black

Default

I'm trying to calculate the approximate added weight of the rear mount set of, so far I have

x2 10 foot aluminum pipe (good material?) about 16 pounds

Both filled with water about 16 pounds

Plus some new radiator mounts- few pounds.

So probably around 35 to 40 pounds added weight but dropping the front weight % may be invaluable
ryansport22 is offline   Reply With Quote
Old 07-12-2012, 10:18 PM   #337
speedyHAM
Scooby Specialist
 
Member#: 48377
Join Date: Nov 2003
Chapter/Region: MWSOC
Location: "They eat fish soaked in lye"
Vehicle:
1996 Gutted, built
XP class Impreza L

Default

Quote:
Originally Posted by Storm View Post
A gutted t-stat seemed to flow coolant through the radiator too quickly and would creep hotter and hotter.

Jay
This is not possible. As long as you are getting hot coolant flowing through the radiator and cool air flow through the radiator the fans will keep the engine cool. The thermostat will not affect this operation at all. If there was not enough air flow that would happen.

As far as weight goes, I managed to only gain 13 lbs when I went from a front radiator to a trunk mounted radiator. About half of that is water weight, the rest is tubing and brackets. Aluminum is the perfect material, and if you run it through the cabin you will want it insulated. Thin, small diameter tubes are the way to save weight.
speedyHAM is offline   Reply With Quote
Old 07-12-2012, 10:47 PM   #338
AtomicRacer
Scooby Newbie
 
Member#: 84586
Join Date: Apr 2005
Chapter/Region: TXIC
Location: McKinney, TX
Vehicle:
1995 Frankenpreza
2012 Tundra DC 5.7L

Default

speedyHAM,

What was the weight balance before the radiator move and after?

-Paul
AtomicRacer is offline   Reply With Quote
Old 07-12-2012, 11:25 PM   #339
speedyHAM
Scooby Specialist
 
Member#: 48377
Join Date: Nov 2003
Chapter/Region: MWSOC
Location: "They eat fish soaked in lye"
Vehicle:
1996 Gutted, built
XP class Impreza L

Default

IIRC it was 64/36 before and 61/39 after. It's a pretty big change because the radiation is 1- pretty heavy, and 2- a long ways in front of the front axle.

Since then I've made some other improvements and it's at 59/41 now. I think I can get it to about 55/45 with a few more changes while getting the car down to minimum weight.

- Update on results-

Last weekend I was in Milwaukee for the divisional and really got a better feel for the car. I made a few tweaks on alignment and tire pressures between my previous event and this one and it really woke the car up. I struggled a bit on Saturday to find the line but really stepped it up on Sunday and got 7th on PAX, .007 behind Jeff Cashmore in his DMOD car. I talked to Jeff and he told me he was having a good day, so I feel great about 7th in that event. I'm really looking forward to Nationals and seeing what I can pull off running in XP this year. Last year in EM was fun, but XP is what I built the car for and that is where I'm going to run it this year.
speedyHAM is offline   Reply With Quote
Old 07-12-2012, 11:46 PM   #340
Storm
Scooby Guru
 
Member#: 5218
Join Date: Mar 2001
Chapter/Region: MWSOC
Location: SAUL'S Motorsports
Vehicle:
96L Most Over-
Developed Beater

Default

That's excellent news Sean. Keep up the good work!!!

Jay
Storm is offline   Reply With Quote
Old 07-13-2012, 03:07 PM   #341
ryansport22
Scooby Newbie
 
Member#: 157775
Join Date: Aug 2007
Chapter/Region: NWIC
Location: Eugene, OR
Vehicle:
2006 WRX
Black

Default

Congrats on the good performance!

On the radiator subject I am running a sacmo radiator loop hose for the heater core. Would a block off be better?


Also I was wondering if you make some carbon fiber doors what would your expected weight be? I just finished my 3rd round of cutting on my doors and got the weight down to 12.2 pounds each.
ryansport22 is offline   Reply With Quote
Old 08-26-2012, 10:59 PM   #342
speedyHAM
Scooby Specialist
 
Member#: 48377
Join Date: Nov 2003
Chapter/Region: MWSOC
Location: "They eat fish soaked in lye"
Vehicle:
1996 Gutted, built
XP class Impreza L

Default

I block off plate is better in that you are not getting flow constantly bypassing the radiator, so you would get better cooling. If you don't need better cooling leave it the way it is. If you do need additional cooling, block that coolant path off.

Once I get around to making some CF doors, they will be no more than 5 lbs each. Keep in mind once you lighten the doors, you can really lighten the hinges and save eve more weight. Those hinges are heavy. The other thing I hate about lightening the steel doors is that they are very floppy when seriously lightened. CF doors would be nice and stiff.

I blew an IC hose a few weekends ago, so I decided to fix that forever-



Not only does it save a few pounds over the old setup, it has smoother flow and only 4 joints vs. 10 on the old setup.

I spend the rest of the weekend fixing up little things to try to ensure reliability.

Lincoln- here we come.
speedyHAM is offline   Reply With Quote
Old 08-27-2012, 10:39 AM   #343
USLiberty
Scooby Newbie
 
Member#: 294466
Join Date: Sep 2011
Chapter/Region: SWIC
Location: prescott az
Vehicle:
1993 Legacy SS
white

Default

Been following this build for a while, great job! I am just amazed as how quickly your car changes direction. Plus, the DIY factor is what I really enjoy. Keep up the good work and keep the videos coming.
USLiberty is offline   Reply With Quote
Old 08-29-2012, 05:49 PM   #344
Storm
Scooby Guru
 
Member#: 5218
Join Date: Mar 2001
Chapter/Region: MWSOC
Location: SAUL'S Motorsports
Vehicle:
96L Most Over-
Developed Beater

Default

See ya there, Sean. It's gonna be a good year for us I think!

Jay
Storm is offline   Reply With Quote
Old 09-05-2012, 12:22 AM   #345
speedyHAM
Scooby Specialist
 
Member#: 48377
Join Date: Nov 2003
Chapter/Region: MWSOC
Location: "They eat fish soaked in lye"
Vehicle:
1996 Gutted, built
XP class Impreza L

Default

Quote:
Originally Posted by Homemade WRX View Post
IBneedsmoreengineRAWR
More RAWR?





Blouch 16GXT, 840cc injectors, and a tune later...



We've been running this turbo for about a month and it is fantastic. The car pulls like crazy in 2nd gear, the difference is visible when watching the car from the side of the course. The spool has slightly more lag on course, but by adjusting your throttle tip in points it's very manageable.

Now lets see how we can do against Fred and Andy.
speedyHAM is offline   Reply With Quote
Old 09-07-2012, 05:46 PM   #346
99GC
Scooby Newbie
 
Member#: 199207
Join Date: Jan 2009
Chapter/Region: RMIC
Location: colorado
Vehicle:
1999 impreza
white

Default

oh no i see some DNSs what happened?
99GC is offline   Reply With Quote
Old 09-07-2012, 07:12 PM   #347
speedyHAM
Scooby Specialist
 
Member#: 48377
Join Date: Nov 2003
Chapter/Region: MWSOC
Location: "They eat fish soaked in lye"
Vehicle:
1996 Gutted, built
XP class Impreza L

Default

Looks like I broke a piston on my second run. Time to build an engine.
speedyHAM is offline   Reply With Quote
Old 09-07-2012, 09:54 PM   #348
99GC
Scooby Newbie
 
Member#: 199207
Join Date: Jan 2009
Chapter/Region: RMIC
Location: colorado
Vehicle:
1999 impreza
white

Default

oh no, i was watching online but i didnt get to see you my friend was running the same time on the other side
99GC is offline   Reply With Quote
Old 09-10-2012, 11:47 PM   #349
Homemade WRX
Scooby Guru
 
Member#: 33782
Join Date: Mar 2003
Chapter/Region: MAIC
Location: 3MI Racing LLC
Vehicle:
96 bastard child
search FIRST, then PM!!!

Default

Quote:
Originally Posted by speedyHAM View Post
Looks like I broke a piston on my second run. Time to build an engine.
so what do you have planned? Still have all the junk I dumped on you before?

If not, you should still have my cell number OR shoot me a PM on my 3MI Racing account. I only get on this once every once in a blue moon (which was last month ).
Homemade WRX is online now   Reply With Quote
Old 09-20-2012, 07:28 PM   #350
Aashaw
Scooby Newbie
 
Member#: 332805
Join Date: Sep 2012
Chapter/Region: South East
Location: FL
Vehicle:
2013 Legacy 2.5 prem
white

Default

That looks sweet man...!
Aashaw is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
'96 Subaru Impreza AWD 85k 5 spd energy0uth MAIC Private Classifieds 14 06-15-2009 02:09 PM
'96 Subaru Impreza AWD 85k 5 spd energy0uth Private Vehicle 'For Sale' Classifieds 13 06-12-2009 09:41 PM
'96 - '98 impreza L wagon questions. Jeepman775 Subaru Conversions 5 03-17-2008 12:23 PM
how do I set my SAFC 2 on my '96 WRX WRXpro General Community 6 05-01-2005 12:45 PM
Picking up my '96 OBS... efoo New England Impreza Club Forum -- NESIC 6 10-01-2000 07:25 PM


All times are GMT -4. The time now is 09:53 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2015 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.