Supra Forums banner

1 - 19 of 19 Posts

·
I live in a giant bucket.
Joined
·
1,237 Posts
Discussion Starter #1 (Edited)
OK, this one is for all the 7M junkies on here. I am working on putting out perfect specs for simulation in Dyno2000 and Drag2000, but I do not know all. I want to release some good files that can be used with these programs, but I need some help. The following are some screenshots I took. In some areas I used the templates the program had because I didn't know the actual specs. Help me fill any holes or wrong info that my specs have so I can release a good set of files!

7M-GTE: (updated with new specs)
 

·
I live in a giant bucket.
Joined
·
1,237 Posts
Discussion Starter #4 (Edited)
Things that need work:
Cam Specs
Turbo Specs (for a stock CT-26)
Front Area of Body
Weight (More Exact? 5 spd targa turbo is base setup)
I'm willing to bet something else is wrong with it too.
 

·
Go All Electric
Joined
·
1,183 Posts
Good info/inquery bud!

I like your Road Dyno, if it is really working well/accurate.
I suppose it is all dependant on variables/info entered.

SHAWN! Help out, again. :D :lol:
 

·
I live in a giant bucket.
Joined
·
1,237 Posts
Discussion Starter #6
this isn't road dyno, it's a computer program that simulates your specs by inputting info. I'm trying to get the right specs put in so it is accurate.
 

·
Republican
Joined
·
8,421 Posts
where did ya get that program!?
 

·
Go All Electric
Joined
·
1,183 Posts
SoupedUpSupra said:
this isn't road dyno, it's a computer program that simulates your specs by inputting info. I'm trying to get the right specs put in so it is accurate.
Heh. I uts glanced at your avatar and your screen-shots and I, consequently, confused the screen shots with this:
http://www.supraforums.com/forum/showthread.php?s=&threadid=152657

Good luck. I'm too tired to read at all. G'Night.
 
S

·
Guest
Joined
·
0 Posts
For the cylinder head specs, use these numbers from Defiant_7M:

Stock:

Intake
lift-flow

.100-77.4 cfm
.150-113.9 cfm
.200-141.4 cfm
.250-162.8 cfm
.300-176 cfm
.350-179.6 cfm


Exhaust
lift-flow

.100-60.4 cfm
.150-93 cfm
.200-112.9 cfm
.250-123.2 cfm
.300-127.8 cfm
.350-130.7 cfm

Change the "pressure drop" to 28 inH20 for both exhaust and intake.

The camshafts only open about 0.300" maximum, can you input that in there somewhere?

Valve diameters are good.
 
S

·
Guest
Joined
·
0 Posts
For the rest of it, I'm not familiar with the software, but here are some things I've quickly noticed:

- Your valve diameter on the main page doesn't match your cylinder head screen.

- Efficiency of turbocharger at 86% is way too high. Use 70-78%.

- Tire size is 225/50/16 stock.

- You sure you can shift in 1/10th of a second! :)
 

·
I live in a giant bucket.
Joined
·
1,237 Posts
Discussion Starter #13
Thanks for the help thus far! You can buy the programs in several places.

Shawndude: which valve sizes are correct, the ones from the main page or the cylinder head screen?

Also if anyone has the specs to make the turbo act more like a CT-26, would be nice.

And also, if anyone can fill in this cam sheet, that would be cool.
 

·
I live in a giant bucket.
Joined
·
1,237 Posts
Discussion Starter #14
I also found that there is a new version out (Dyno2003) which has a new companion program where you can input tracks and do road racing simulation. I want it!
 

·
GOT BOOST?
Joined
·
551 Posts
Me too I want the Dyno2003... I cant even download a beta version...

Anyway search for Engine Analyzer Pro 3.3 ...

It is exelent in geting much more specific results. You would have to imput much more data though. It is also only an engine simulator ... no drag or track results. The results at the track are much harder to acctualy simulate... there are too many variables.


Anarkey has discovered that 2" runers on the 2JZ engines with boost over 20 psi and red line of 7500+ can gain up to 7% ... that is 40-60 RWHP .... =)

Who knows some one might find somthing cool to uleash the good old 7M power =)
 
S

·
Guest
Joined
·
0 Posts
SoupedUpSupra said:
Shawndude: which valve sizes are correct, the ones from the main page or the cylinder head screen?
Intake diameter 1.26", Exhaust diameter 1.08" are correct.
 

·
I live in a giant bucket.
Joined
·
1,237 Posts
Discussion Starter #17
OK I'm almost done with this thing! I need to know a few more things:

Exhaust Valve Open and Close
Turbocharger pressure ratio for stock CT-26
Hydraulic, Solid or Roller lifters?

Then it will be done, and I will post the zip file for anyone who wants it. (This file can be used with Dyno2003 Drag2003 and FastLap2003)
 
S

·
Guest
Joined
·
0 Posts
Exhaust Valve Open and Close
Intake:
Open, 6 degrees BTDC
Close, 50 degrees ABDC

Exhaust:
Open, 53 degrees BBDC
Close, 3 degrees ATDC

Turbocharger pressure ratio for stock CT-26

The spec is 5.5 - 7.5 PSI, for the manual transmission model. However the turbo has to boost higher to overcome the stock restrictions (AFM, air filter, intercooler, piping etc.). From this link:

http://www.computerpro.com/~lellis/rls10a.html

It states there is a 3 PSI pressure loss at stock boost. Add roughly another 1 PSI for the other parts, and the stock turbo is boosting at around 10 PSI. This is just a rough estimate at best. If you're not calculating for the stock intercooler adjust accordingly.

To convert from PSI to pressure ratio at sea level:

(14.7+turbo boost PSI) / 14.7

Hydraulic, Solid or Roller lifters?
Solid
 

·
I live in a giant bucket.
Joined
·
1,237 Posts
Discussion Starter #19
Thanks for the help Shawndude, I got everything dialed in correctly (I believe) but it still makes too much horsepower at 6500. I'll post up some updates pics later on today. I just woke up.
 
1 - 19 of 19 Posts
Top