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-   -   Timing? (https://www.rx7club.com/engine-management-forum-37/timing-349557/)

Infini IV Sep 18, 2004 11:18 AM

Timing?
 
I'm curious to know if I'm on the "safe" side of things...

I'm running just an S5 13bt mild streetported with cleaned up exhaust ports... Turbo is just a T04B comp. housing and T04B V-trim wheel on stock turbine. I make full boost (11psi) by just under 3700rpm and it holds all the way to redline (7500)

Now since I don't understand how to use the print screen buttom (I'm stupid), here is my timing as best as I can do:

Timing vs RPM:
idle = 10*
idle - 3000rpm = gradual rise from 10* to 28*
3000 - 7500rpm = 28*

Timing vs Pressure:
25” - 5" = (0*) - (-2*) <~ "0degrees to 26degrees"
5” - 2psi = (-2*) - (-6*)
2psi - 10psi = (-6*) - (-14*)
10psi - 14psi = (-14*)
14psi+ = (-18*) - (-20*)

Since I haven't dynoe'd yet, I don't know where my peak torque is. Overall, do my figures look alright?

Infini IV Sep 27, 2004 04:41 AM

Here is a 2nd gear datalog that shows a bit of my timing... does this look ok?

LOG RPM LOAD T.P.S. Timing Output Water Air Battery

#17 2950 -02 Hg 99% 23° 7.00sT 86°c 42°c 13.50v
#18 3060 +00 Hg 99% 25° 7.38sT 86°c 42°c 13.50v
#19 3180 +02psi 99% 24° 9.38sT 86°c 42°c 13.50v
#20 3320 +03psi 99% 24° 9.62mS 86°c 42°c 13.50v
#21 3500 +03psi 99% 25° 6.33mS 86°c 42°c 13.44v
#22 3680 +06psi 99% 19° 6.62mS 86°c 44°c 13.38v
#23 3880 +07psi 99% 15° 6.95mS 86°c 44°c 13.38v
#24 4250 +08psi 99% 15° 8.10mS 88°c 45°c 13.32v
#25 4500 +09psi 99% 14° 8.24mS 88°c 46°c 13.32v
#26 4680 +09psi 99% 14° 8.67mS 88°c 48°c 13.32v

mr_vaughn Oct 7, 2004 07:09 PM

i am also going to be workin on my S5 with an e-manage and i will too have the timing adjustments
Biggest issue i have is that i do not know what the stock setup is and the rpms increaase and weel as how the timing retardsas boost goed up

Infini IV Oct 8, 2004 02:59 AM

Aren't you having Dave tune your car? Dave should have a good idea what he's doing ;)

mr_vaughn Oct 8, 2004 09:47 AM

ill let him try , but only if i concurr on what he is doing and why.

Infini IV Oct 10, 2004 05:53 AM

No worries, Dave is awesome and has a pretty good idea on what he's doing. Be sure to ask for a ride in his half-bp 62-1 FC (assuming he has the motor in there already)!


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