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John V's STS GTUs build thread

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Old 09-14-10 | 05:16 PM
  #351  
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the DIY-PNP is MS2 based...
Old 09-14-10 | 05:31 PM
  #352  
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Originally Posted by eage8
the DIY-PNP is MS2 based...
Correct, it uses this board
http://www.diyautotune.com/catalog/m...v22-p-381.html

The DIY-PNP kit is still unusable though since it cannot control the s5 omp or emissions and the connector is too wide for the case.
Old 09-14-10 | 05:40 PM
  #353  
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From: https://www2.mazda.com/en/100th/
Originally Posted by compnut21
Its defiantly more versatile and has a much higher resolution. Plus the Rtek from what I can tell is more or less just remapping the stock ecu parameters. I don't think it would allow for things like spark cut only or removing the vam.

.
per the rules you cannot remove the AFM (=vam?)

full rules are here: http://www.moutons.org/sccasolo/Rule...7.10.%20ENGINE
Old 09-14-10 | 05:57 PM
  #354  
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I know you cannot remove the vam per the rules, besides if you did you would have to install a new IAT elsewhere. Certain sensors like the vam and the narrow range tps are not used with megasquirt and can be theoretically removed if classing allows.

EDIT: Rule D1 states "Reprogrammed ECU may be used in the standard housing." This means Megasquirt is completely out of the question anyways it seems.

Last edited by compnut21; 09-14-10 at 06:01 PM.
Old 09-14-10 | 07:42 PM
  #355  
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From: https://www2.mazda.com/en/100th/
Originally Posted by compnut21
I know you cannot remove the vam per the rules, besides if you did you would have to install a new IAT elsewhere. Certain sensors like the vam and the narrow range tps are not used with megasquirt and can be theoretically removed if classing allows.

EDIT: Rule D1 states "Reprogrammed ECU may be used in the standard housing." This means Megasquirt is completely out of the question anyways it seems.
we stuck an e6x into a stock case back in 2003... of course in ITS you need the stock case, but it doesn't need to run the emissions/omp
Old 09-14-10 | 07:59 PM
  #356  
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There are STS guys in Miatas that are running MS in a stock Miata case. I haven't personally inspected them, but I'm told they've been scrutinized and are legal.

The RTek is OK, but I know I'm giving up resolution using it.
Old 09-28-10 | 09:45 AM
  #357  
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Quick update.

Looks like I'm going a little bit of a different direction with my suspension setup. What I have now isn't bad, but isn't ideal for an STS car.

With some help from a few suspension experts I race with, I'll be changing the dampers out and experimenting with some different spring rates and ride heights. I'll have the ability to run the front end higher, improving the geometry. And with the new dampers, I'll get the high shaft speed force down into a more usable range on street tires.

So if anyone is interested in a really low mileage Ground Control race coilover setup, let me know. I have the dyno plots for the shocks that I'm happy to share with anyone who wants to buy the setup. :-)
Old 10-18-10 | 06:48 AM
  #358  
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Originally Posted by SoloII///M
Quick update.

Looks like I'm going a little bit of a different direction with my suspension setup. What I have now isn't bad, but isn't ideal for an STS car.

With some help from a few suspension experts I race with, I'll be changing the dampers out and experimenting with some different spring rates and ride heights. I'll have the ability to run the front end higher, improving the geometry. And with the new dampers, I'll get the high shaft speed force down into a more usable range on street tires.

So if anyone is interested in a really low mileage Ground Control race coilover setup, let me know. I have the dyno plots for the shocks that I'm happy to share with anyone who wants to buy the setup. :-)
any update on your new suspension setup?

are you going softer on spring rates and raised rise height?

love your thread, I have a 89 GTUs too.
Old 10-20-10 | 09:42 PM
  #359  
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Originally Posted by TwoFun
any update on your new suspension setup?

are you going softer on spring rates and raised rise height?

love your thread, I have a 89 GTUs too.
No real updates. Car has been sitting for the last month while I work on other stuff. I had the trans out of it to fix a grinding issue and once I got it back together the season was over.

I'll get cracking on the suspension in the offseason. Soon.
Old 10-20-10 | 10:46 PM
  #360  
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Originally Posted by SoloII///M
No real updates. Car has been sitting for the last month while I work on other stuff. I had the trans out of it to fix a grinding issue and once I got it back together the season was over.

I'll get cracking on the suspension in the offseason. Soon.
good to know things are back on track.

I am try to guess what direction your suspension set up is going, since you already tried the low ride height with stiff spring rate which i assumed you think can be improve.

i am guessing you don't like the camber curve and R/C on FC once it is that low?

do you mind PM your shock dyno graph?
Old 10-21-10 | 08:57 PM
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Originally Posted by TwoFun
good to know things are back on track.

I am try to guess what direction your suspension set up is going, since you already tried the low ride height with stiff spring rate which i assumed you think can be improve.

i am guessing you don't like the camber curve and R/C on FC once it is that low?

do you mind PM your shock dyno graph?
I don't like the camber curve. The thing is - the car would have to be a lot higher to really fix it. And it would still have to be really stiff.

I'm not happy with the shocks. I think they're way too stiff. If I spend money on anything in the offseason, it'll be for different front dampers.
Old 10-24-10 | 06:06 PM
  #362  
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i really enjoy your thread on the sts build. i was competing in sts, but since i did a 6 port turbo build i am now in sm. I'm using some of your info and refining my set up. good luck next season.
Old 11-30-10 | 02:48 PM
  #363  
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suscribing
Old 11-30-10 | 07:02 PM
  #364  
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I lied. I spent money on something in the off season - another set of Keizer wheels! I plan to pick up a set of 225/45/15 Toyo R1Rs to run at cooler events. Not cheap, but worth it.

Going to be sending off some work to a local machine shop - new rear camber adjusters of our own design

Oh, yeah - and new shocks.
Old 12-01-10 | 12:16 AM
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have you looked into the ground control coilover setup? i think that's my next suspension mod to replace the agx's and eibach springs.
Old 12-01-10 | 06:12 AM
  #366  
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I currently have a setup from Ground Control with Koni single adjustable "street" shocks all around. I have no issue with the spring perches or camber plates but I don't like the shocks so they've got to go.
Old 12-01-10 | 07:04 AM
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really those are the ones i was looking at, what don't you like about the shocks? what shocks are you looking at using now?
Old 12-01-10 | 01:32 PM
  #368  
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There is nothing wrong with them, but I want to upgrade to the big piston shocks so I can have them revalved to get more digression. They're still far better than any of the off the shelf Chinese crap that most RX-7 owners put on their car. They're just not ideal for someone who wants a no-expense-spared competition damper.

If you want to buy the shocks I have now, they only have one season worth of events on them. Then all you'd need are the GC housings and camber plates. just shoot me a PM.
Old 12-02-10 | 11:25 AM
  #369  
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Are they using a twin tube damper like the koni sports (yellows)? Are you just switching to a mono-tube race shock?
Old 12-02-10 | 01:58 PM
  #370  
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Originally Posted by eage8
Are they using a twin tube damper like the koni sports (yellows)? Are you just switching to a mono-tube race shock?
The standard GC setup uses an 8641 Sport front and an 8041 Sport rear shock. I picked up a set of big-piston race shocks for the front and rear because I want more range for revalving.

There is nothing wrong with the sport shocks, lots of the ITS guys use them. I just want a little more tweakability.
Old 12-02-10 | 02:57 PM
  #371  
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Originally Posted by SoloII///M
The standard GC setup uses an 8641 Sport front and an 8041 Sport rear shock. I picked up a set of big-piston race shocks for the front and rear because I want more range for revalving.

There is nothing wrong with the sport shocks, lots of the ITS guys use them. I just want a little more tweakability.
agreed, I'm running koni sports on my corolla with 525F/600R lbs springs and they work amazing for off the shelf dampers. They could use a bit more valving (I have them set of max rebound now). Maybe someday I'll get them revalved.

are the race shocks you got longer? I remember you trying to get longer ones at some point. Also, are they double adjustable? the koni race shocks look nice, but a little too expensive for my wallet the ones I've seen are $400 each
Old 12-03-10 | 07:51 AM
  #372  
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Yes, double adjustable 8611s. They aren't cheap, but it will give me a couple more things to play with.

I didn't end up getting longer ones. Until I take the car to FP I'll just live with the lowered roll centers and band-aid it.
Old 12-13-10 | 08:26 AM
  #373  
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A few pics from Solo Nats... better late than never right?

One of my favorite cars ever - Tom Ellam's E Prepared RX-3:



My ugly car:



And a few from the Pro Finale.








Old 12-13-10 | 10:32 AM
  #374  
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The car looks great
Old 12-14-10 | 07:57 AM
  #375  
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love it!!!



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