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dyno results

Hmmm....I would have thought you'd have made more than that. Did the air suck? Maybe the dyno wasn't calibrated properly.
 


It could probably be advanced some...but, 18* isn't bad at all for keeping it safe. 19* is about all I'd push it for a daily driven car.
 
I was always told 20* is where you start putting the Head Gaskets at risk.. Just thought i had heard of people pushing 18* on pump gas with a similar build...
 


I ws at 20 but i turned it down to be safe. Ill get the ic and 2.8 on, bring it to a local dyno and tune it and get some real numbers.
 


Im not a big believer in giant timing tables.... General boost tuning states that the more boost / compression you run the less timing is nessary to reach peak combustion right at top dead center because the fuel and air is squished much closer together. When I had mine on the dyno (Keep in mind this is a l36 block so its high compression) I was running a 3.4 inch pulley on gas at the time and was running 20* of timing with no kr. Just for fun we added timing and saw no gains at all. In fact we pulled timing all the way down to 13* before we saw any power or torque loss. I still run 14* now and notice 0 change when I run any more..... heck iv tuned subarus and the same story there.... running almost 25psi of boost you only need 14 to 15* to make peak power.
 
Out of curiosity go you happen yo have any Dyno sheets from these pulls? I would be very interested to see them.
 
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My shift point was set @ 6250 just for reference.
 


I guess what I was really wanting to see was something showing that with lower timing it didnt hurt the HP output...
 
Never bothered with sheets back when I was playing with that. Was mostly on the dyno to find what afr and timing the car was most happy at so I would know what to tune for. Butt dyno and the 1/4mile dyno both say that I go faster on 14* and a smaller pully (Less timing = I can run more boost) then with 18* and .2 bigger pulley.
 
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