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Old 05-22-2002, 04:25 AM   #1
WRX Harvey
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Member#: 13025
Join Date: Dec 2001
Chapter/Region: RMIC
Location: Longmont, Colorado
Vehicle:
1998 RS-T
Rally Blue

Thumbs up Bandimere Roll Call

Anyone going to Morrison tonight? No new mods but I can't keep away.
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Old 05-22-2002, 09:28 AM   #2
Diz
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Join Date: Feb 2000
Chapter/Region: RMIC
Location: Colorado Mountains
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2003 Honda S2000
2004 Mazdaspeed MX-5

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There's an Avs game tonight, so you may not get as big of a crowd as usual...
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Old 05-22-2002, 10:22 AM   #3
wrxlvr
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Location: Aurora, CO
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2009 Cadillac CTS-V

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I'll be attending the beforementioned game so I will not be in attendance.
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Old 05-22-2002, 11:13 AM   #4
phast
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I'm trying to find some way to make this work. Got relatives coming into town this afternoon, but maybe I can sneak away.

This weather is nice for drag racing.
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Old 05-22-2002, 11:20 AM   #5
Judah
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2002 Subaru WRX

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What time are you going up?

I was going to watch the Av's but I think that I would rather watch runs up at Bandimere.

Justin
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Old 05-22-2002, 04:57 PM   #6
WRX Harvey
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Join Date: Dec 2001
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Location: Longmont, Colorado
Vehicle:
1998 RS-T
Rally Blue

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I am heading out at 4:30.
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Old 05-23-2002, 02:58 AM   #7
hotrod
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Join Date: Jan 2002
Location: 13.239@102.85 @ 5800 ft on 13T
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2002 Impreza WRX
e85forum.net

Default we had fun should have been there

Well about 4 - 5 subies made it.
Most of us got 5 or so runs. Good weather, big crowd.

Should have been there.


Larry
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Old 05-23-2002, 10:31 AM   #8
wrxlvr
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Sooooooo......... how'd everyone do? Times please. Was anyone stock or close to it?
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Old 05-23-2002, 02:03 PM   #9
WRX Harvey
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Join Date: Dec 2001
Chapter/Region: RMIC
Location: Longmont, Colorado
Vehicle:
1998 RS-T
Rally Blue

Thumbs up Same Same

I pulled two 14.2 ETs and one 14.3 ET. I didn't get to go heads up against the PaxsonS2000 that was at the meet. But we hung out, talked about the possibility of renting Second Creek sometime, and looked at other cars. There was a stocker WRX with a BOV pulling low 16s, there was another stock guy with a SBC-ID boost controller and an insulation mod and homemade IC sprayer who was pulling 14.8s.

I was waiting for parts but I had raced the supercharged S2000 on the Longmont Diagonal and thought that I might be able to win at the strip. When I heard the owner say that he would be at bandimere I had to go. His best time was a 14.1, Drats.

I saw some really cool cars. Two Lightnings both pulling consistent 13.9s. A guy with a viper GTS( high 12s) and RT/10(mid 14s). The Black AMX. A beautiful blue Impala SS.

Last edited by WRX Harvey; 05-23-2002 at 02:11 PM.
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Old 05-23-2002, 02:32 PM   #10
hotrod
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2002 Impreza WRX
e85forum.net

Default It was a good test day

I was the guy running the insulated IC, and testing a home made IC sprayer, and tire pressures. my best ET was 14.8 Best MPH 93.11.

I did cut a .527 light on my last pass against a fully prepped Chevel which made me happy.

All stock hardware, except the Blitz DSBC.

Lessons for everyone:
The car likes fairly high tire pressures, It cost me 1.4 seconds on my ET's when I dropped to 26 psi, from 34 psi.

IC sprayers can be counter productive. My intercooler actually got warmer when I sprayed in the staging lanes as the warm fluid in the hoses was hotter than the insulated intercooler.

I strongly recommend that people put some insulation around the shell of the IC, especially the passenger side. Makes the IC temps much less erratic in traffic. The top mount does not need IC spray at speed with the insulation. I left the line with IC temps in the High 80's to low 100's and when I picked up timeing slips the IC temp was about 15-20 degrees cooler, running 16 psi boost.

I was running on snow tires to see if tire spin would be helpful. Made for nice soft launches, easy on the clutch but crappy 60' times in the low 2 second range. Car would launch smoothly with about 10 - 15 ft of wheel spin then hook up and drop off boost for a fraction of a second. Never got a hot clutch all night, but never could get a hard launch either.


Larry
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Old 05-23-2002, 03:20 PM   #11
davidm_sh
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Java Black

Default Re: It was a good test day

Quote:
Originally posted by hotrod
I was the guy running the insulated IC, and testing a home made IC sprayer, and tire pressures. my best ET was 14.8 Best MPH 93.11.

I did cut a .527 light on my last pass against a fully prepped Chevel which made me happy.

All stock hardware, except the Blitz DSBC.

Lessons for everyone:
The car likes fairly high tire pressures, It cost me 1.4 seconds on my ET's when I dropped to 26 psi, from 34 psi.

IC sprayers can be counter productive. My intercooler actually got warmer when I sprayed in the staging lanes as the warm fluid in the hoses was hotter than the insulated intercooler.

I strongly recommend that people put some insulation around the shell of the IC, especially the passenger side. Makes the IC temps much less erratic in traffic. The top mount does not need IC spray at speed with the insulation. I left the line with IC temps in the High 80's to low 100's and when I picked up timeing slips the IC temp was about 15-20 degrees cooler, running 16 psi boost.

I was running on snow tires to see if tire spin would be helpful. Made for nice soft launches, easy on the clutch but crappy 60' times in the low 2 second range. Car would launch smoothly with about 10 - 15 ft of wheel spin then hook up and drop off boost for a fraction of a second. Never got a hot clutch all night, but never could get a hard launch either.


Larry
That's some good info there. Just curious do you have any pics of your intercooler installation job? Or maybe you could give a brief description? Sounds like a good idea.
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Old 05-23-2002, 06:38 PM   #12
hotrod
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2002 Impreza WRX
e85forum.net

Default Cooler insulation

No pictures, but it is pretty straight forward. It is also a work in progress, so it will probably be changed again several times.

Two key features:
perimeter insulation, and a curtain to block convective flow from off the hot turbo up under the IC.

I went down to Ontrack Performace and picked up some insulation material
that consists of an aluminized layer over a fiberglass fabric substrate (about 3/32 inch thick --2mm for you metric folks)

It is the same material used in fire proof suits I believe. It is by COOLIT Thermo Tec and is sold as muffler/cat heat shield material. Comes in a 24" x 40" sheet, kinda expensive.

I also went to the local RV accessory dealer and picked up some aluminized heat insulation. Best way to describe it is reflective bubble wrap.

Went to the local Lowe's hardware store and picked up a roll of 2" wide aluminum foil tape. It has an adhesive that holds well even after it gets hot.

Put a layer of the aluminized bubble wrap around the outside perimeter of the IC, then cut a drape of the muffler/cat insulation and put a slot in it, so it fits over the passenger side IC mount tab. Make the drape so it hangs from the top passenger side of the IC and drops all the way to the top of the bell housing. This effectively blocks convection of hot air off the turbo, and up/down pipe from coming up under the intercooler when you are stopped.

I then put a couple more layers of the aluminized bubble wrap around the outside of the IC, and cut one more drape that passes over the mounting tab and tucks back under it so it does not get scalding hot from the turbo's heat.

Tape until you think it is right.

It drastically slows down the heat soak when the car is stopped/parked. The intercooler also cools down faster when you get under way.

I still plan on tweaking the insulation package so it may change at anytime, but that is how it is rigged today.

Larry
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Old 05-24-2002, 01:52 AM   #13
dgp
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Location: Boulder, CO
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02

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What settings were you using on your sbcid. I have the same controller.
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Old 05-24-2002, 03:12 AM   #14
hotrod
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Join Date: Jan 2002
Location: 13.239@102.85 @ 5800 ft on 13T
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2002 Impreza WRX
e85forum.net

Default controller settings

Well I've tried several different combinations. The problem is finding a setting that gives you the max boost you want with out excessive boost spike.

During warm weather like the other day I use a setting of 72 - 77% , I turn the gain down to -10, and you will get a max boost reading of almost exactly what you set as your boost limit +/- .01.

In colder weather I typically run 60% or so because it tends to spike more in cold weather.

When doing rally-X you can dial either the gain or the % settings up, to get faster boost (almost like a MBC) because your not on the throttle for very long, but it will over boost spike pretty significantly if you drive it that way on the street.

The % setting and the gain settings are more or less equal. If you raise one you can dial back the other and still have the same effect. So there are probably a thousand combinations that will give about the same boost profile.


Larry
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Old 05-24-2002, 06:07 PM   #15
dgp
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02

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thanks
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