I posted this before, but no one answered...it must be doable...just need a weak enough spring. Anyone have any experience w/ this?

 

Anyone at least know of any places w/ large selections of springs?

 

You could try home depot

 

I realize this doesn't answer your question, but why the hell would you want to run boost that low? I don't think homedepot sells much in the way of springs...you'd probably be better off looking at a real hardware store, like ACE, or a local equivalent would be better...you could even just wind your own out of some thick copper wire since it doesn't have to be too precise.

 

I'm looking at mcmaster-carr supply...they have A LOT of stuff.


Reason why? I'm bored and looking at making somesort of traction control device. I know I probably dont know enough to do it, but what the hell...I'll try. Wheels slip....lower boost. If it works it'd be a great idea!

 

Do any of you know to determine what spring I would need. I have an extra Tial .65bar spring in my hand...but I'm not sure how to measure what kinda strength spring I would need for like a .1 bar spring.

 

if you could determine what the spring constant is for a couple of tial springs, you could plot the spring constants relative to boost and then extrapolate what spring constant theoretically should work for 1-3 psi of boost.

Tial should have the spring constants... the question is if they will give out the info.

 

go to roadrace engineering

 

just emailed them....hopefully they will. i do have the .45 and .65 springs...guess i could do it myself.

Only problem will be the electronics....wish i knew more.

 

Heres the smallest spring rates i see

Spring color 35mm 40mm 46mm
small yellow 4.35 3.63 2.90

BTW, Colin (ekb18c) from RPM NYC sells them.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 00SilverLS &raquo;</TD></TR><TR><TD CLASS="quote">just emailed them....hopefully they will. i do have the .45 and .65 springs...guess i could do it myself.

Only problem will be the electronics....wish i knew more. </TD></TR></TABLE>

you could use a avc-r... it has gear dependent boost right? Maybe rpm dependent boost as well? Yeah I know, those things aren't cheap...

 

Thats what im realizing....making a TC device would be way outta my league, plus probably not nessesary. Sure it would be a little better, but not by much....some trial and error could probably get the avc-r pretty good.

 

There is a 0.35 bar spring available for the 35mm Tial WGs. I'd start there.
Yellow painted spring 0.35 bar / 4.4 psi

 

Have you tried adjusting the amount of throttle you give your car when launching?

I've pretty much mastered launching my car on the street with street tires by simply letting off of the gas pedal as rpm's get closer to red-line. I was forced to try this since the car reachs full boost in first gear which makes completely useless power (vortech).

Good luck!

 

Learn to control your foot when launching - it helps a lot
Also having a good LSD helps with the launching too..

 

I hope this helps, looks like the lowest one is 4psi.

Here are the spring pressures and colors:

35mm TiAL / spring discription
.3 bar / 4.35psi / <FONT COLOR="yellow"> small yellow</FONT>
.45 bar / 6.53psi / <FONT COLOR="red">small red</FONT>
.65 bar / 9.43psi / <FONT COLOR="green">small green</FONT>
.8 bar / 11.6psi / <FONT COLOR="blue">small blue</FONT>

35mm TiAL HP (35mm bottom + 40mm top)
.95 bar / 13.78 / <FONT COLOR="yellow">big yellow</FONT>
1.1bar / 15.95psi / <FONT COLOR="red">big red</FONT>
1.35bar / 19.58psi / <FONT COLOR="green">big green</FONT>
1.5bar /21.75psi / <FONT COLOR="blue">big blue</FONT>

40mm TiAL
.25 bar / 3.63psi / <FONT COLOR="yellow">small yellow</FONT>
.4 bar / 5.80psi / <FONT COLOR="red">small red</FONT>
.5 bar / 7.25psi / <FONT COLOR="green">small green</FONT>
.6 bar / 8.70psi <FONT COLOR="blue">small blue</FONT>
.7 bar / 10.15psi / <FONT COLOR="yellow">big yellow</FONT>
.8 bar / 11.60psi / <FONT COLOR="red">big red</FONT>
.9 bar / 13.05psi / <FONT COLOR="green">big green</FONT>
1.0 bar /14.50psi / <FONT COLOR="blue">big blue</FONT>

40mm TiAL HP (combine big and small springs to get desired output)



Bottoz

 

I have seen you post this i was loking for it.

 

I know about all the different springs, and I know about using my foot....I just want somethign easier...and I'm just screwing around on a shitty rainy day


Forget what I had here before....it was all wrong.


Modified by 00SilverLS at 5:29 PM 5/28/2003

 

you could like... heat the spring up, ya know, how tons of rice bois lower their rides, that will give you less spring pressure, right?? LOL

 

you could run a higher rate spring and run a vacuum pump to the top side of the wastegate and pull a vacuum on that to open the wastegate. then have it run regular when you hit second by putting a micro switch on the shifter when its in first.


That sounds like too much work but thats what I came up with after spending all day in the Texas heat in a welding mask.

 

wtf matt. why you want to run 1~3psi for?

Jeff-

 

im tired of power......

 

electronic supercharger

 

so whats the rule with profec-b?

say i had the 4.5psi spring, what would be the max boost? i could run with it?

 

Just buy the 4 psi spring from tial. Then purchase the turbo xs dual stage boost controller and set the first stage of boost to the same are your spring and the second stage of boost to 9psi. The turbo xs boost controller comes with a toggle switch which you can mount inside your car. When you hit second gear flip the switch for 9 psi.