The Difference a Mod Makes.
#1
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Last year my SSEi ran very consistent 14.5 sec 1/4 mi times 96-97 mph with 60 foot times 2.2 - 2.3 sec
Since then I have added the 1.9 rockers and a Limited Slip differential....and was using a 3.1" pulley instead of the 3.4" from last year.
The following are 5 runs showing the difference the mods made :
The track conditions and temps were similar both years.
10:am - R/T-.084 60'-2.199 1/8-9.069 @ 78.41 1/4-14.055 @ 98.40 - Time trial
11:am - R/T-.223 60'-2.135 1/8-9.006 @ 78.13 1/4-13.985 @ 98.36 - Time trial
12:Nn - R/T-.095 60'-2.210 1/8-9.056 @ 78.71 1/4-14.038 @ 98.38 - Win
2:pm - R/T-.177 60'-2.161 1/8-9.021 @ 78.58 1/4-14.007 @ 98.32 - Win
3:pm - R/T-.094 60'-2.189 1/8-9.046 @ 78.48 1/4-14.036 @ 98.03 - Lost to 2nd place Monte Carlo who was a sec slower but had a .002 reaction time. PDad beat him next.
So the difference appears to be .5 sec gain and 2 mph
I think the limited slip would make more difference if I were running slicks because it didn't make a significant difference using street tires.
I didn't scan, so don't know if I was getting any knock retard.
.....and as Rogue said, I was sleeping at the lights, so have some work to do on my old fart reaction times.
Since then I have added the 1.9 rockers and a Limited Slip differential....and was using a 3.1" pulley instead of the 3.4" from last year.
The following are 5 runs showing the difference the mods made :
The track conditions and temps were similar both years.
10:am - R/T-.084 60'-2.199 1/8-9.069 @ 78.41 1/4-14.055 @ 98.40 - Time trial
11:am - R/T-.223 60'-2.135 1/8-9.006 @ 78.13 1/4-13.985 @ 98.36 - Time trial
12:Nn - R/T-.095 60'-2.210 1/8-9.056 @ 78.71 1/4-14.038 @ 98.38 - Win
2:pm - R/T-.177 60'-2.161 1/8-9.021 @ 78.58 1/4-14.007 @ 98.32 - Win
3:pm - R/T-.094 60'-2.189 1/8-9.046 @ 78.48 1/4-14.036 @ 98.03 - Lost to 2nd place Monte Carlo who was a sec slower but had a .002 reaction time. PDad beat him next.
So the difference appears to be .5 sec gain and 2 mph
I think the limited slip would make more difference if I were running slicks because it didn't make a significant difference using street tires.
I didn't scan, so don't know if I was getting any knock retard.
.....and as Rogue said, I was sleeping at the lights, so have some work to do on my old fart reaction times.
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I think with slicks you would have run 13.6XX, your 60' were all about 2.2 while mine were in the 2.0XX, I was falling off the top and had a tough time getting into 3rd gear with the car shifting before the finish line :?
I think we were both seeing KR on the weekend too, at 110*f and the thin dry air the high octane race fuel couldnt compensate that much? On friday I ran the 3.3" and no slicks and was running right behind you, saturday I had the 3.1 and slicks and ran beside you. I give that credit to the slicks and not the pulley?
Next year we should have a day to test these things out and try diff pullies and combo'* to see where the pattern is?
I think we were both seeing KR on the weekend too, at 110*f and the thin dry air the high octane race fuel couldnt compensate that much? On friday I ran the 3.3" and no slicks and was running right behind you, saturday I had the 3.1 and slicks and ran beside you. I give that credit to the slicks and not the pulley?
Next year we should have a day to test these things out and try diff pullies and combo'* to see where the pattern is?
#4
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Yes O'Neil, we need more time to play and experiment.
It was a noticeable difference after the rockers and with no more one legged burnouts it has got to be easier on the trani and tire wear.
I have re-installed the 3.2" pulley. Shad ran with that size and was trapping 1 mph faster than us...and he doesn't have the rockers installed yet.
Even the 115 octance fuel couldn't compensate.
It was a noticeable difference after the rockers and with no more one legged burnouts it has got to be easier on the trani and tire wear.
I have re-installed the 3.2" pulley. Shad ran with that size and was trapping 1 mph faster than us...and he doesn't have the rockers installed yet.
Even the 115 octance fuel couldn't compensate.
#5
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That'* one thing I'm still confused about....How come I trapped higher,but slower e.t.? The only thing I can think of is that I read an article about factory freaks, and the imperfections and perfections of mass production, and somethin'* different....I can't wait to get the rockers on, next up will be an LSD, shift kit, and probably some steeper gears.....
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Originally Posted by chadow427
So a bad launch actually makes your trap speed higher? :?
#9
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Paul, what were your 60'* compared to last year?
R/T-.223 60'-2.275 1/8-9.419 @ 75.56 1/4-14.570 @ 96.10
R/T-.333 60'-2.333 1/8-9.532 @ 75.29 1/4-14.703 @ 96.38
R/T-.330 60'-2.277 1/8-9.436 @ 75.42 1/4-14.601 @ 95.69
R/T-.241 60'-2.258 1/8-9.389 @ xx.xx 1/4-14.535 @ 96.74
R/T-.157 60'-2.209 1/8-9.340 @ 75.75 1/4-14.473 @ 97.12
R/T-.359 60'-2.285 1/8-9.534 @ 74.80 1/4-14.740 @ 94.95
quit looking at those reaction times.
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#10
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Does your car shift into third at the end of the track or is it still in second? If it does shift before the end I suggest manually holding it in 2nd to finish out the quarter, I susspect a gain of 1-2mph and a tenth or so.
Just an option.
Just an option.