powerlogger file..Bison or Dusty, please look....
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Dusty Bradford
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I can't view it.
What rpm is it shifting at and what rpm is it falling to after the gear change? This will tell us if it's too tight.
What rpm is it shifting at and what rpm is it falling to after the gear change? This will tell us if it's too tight.
mikestertwo
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1-2 shift@5500 about a 550 rpm drop
2-3 shift@5950 about a 850 rpm drop
WB @8.75
Injector duty cycle close to 100%
2-3 shift@5950 about a 850 rpm drop
WB @8.75
Injector duty cycle close to 100%
Dusty Bradford
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Thanks
Dusty Bradford
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Is it slow spooling? A TE-63 can use more stall to help spool-up but judging by your rpm drop you can't go much looser at all. If you plan to turn the power up, the rpm drop will change a little more so it may not be able to be loosened at all.
Just for conversation lets say it's slow to spool. If you loosen it 400 rpm to help it spool you will only drop 400 rpm on the gear change which will now make it to loose up top. At this point swapping to something like a 9.5 non lock converter will benefit because it's looser down low and tighter up top. This gets you quicker spool without gaining slip up top. If your current converter comes in quickly and your happy with the spool-up then you'll be fine.
Just for conversation lets say it's slow to spool. If you loosen it 400 rpm to help it spool you will only drop 400 rpm on the gear change which will now make it to loose up top. At this point swapping to something like a 9.5 non lock converter will benefit because it's looser down low and tighter up top. This gets you quicker spool without gaining slip up top. If your current converter comes in quickly and your happy with the spool-up then you'll be fine.
it's actually a bb tnetics cpt66....my whole combo is different than my sig....forged shortblock, alum gn1's fully ported, 212/212 comp flat tappet, 60lb inj, dual nozzle alky, TransSpecialties 10.5" SUPPOSED to be 3200 stall, 28" tire, 3.42 gears......like i said, according to the log, stall seems around 600 rpm low, trapped at 54-5500 rpm 118 mph.... trapped at 124 with old chip, i didn't have powerlogger then....i know i have some tuning issues to play with, but i'm concerned/wondering if this converter is hurting me too.....this combo should go mid-low 10's which should be 126-128 mph correct? the best run with old chip was 10.83 @ 124 1.63 60'...
Dusty Bradford
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If your actual a/f is 8.5 that is most of your problem. It sounds way to fat going by that data.
Judging by your rpm drop the converter is not 600 rpm too tight. Sure it won't stall close to their advertised rating but that's not unusual for guys not familiar with the turbo buick stall requirements. The rpm drop on the 2-3 gear change is good which indicates the converter is working up top. If it is slow to spool you are experiencing the common problem with alot of converters. Tight down low and good up top. The only way to fix this is to swap to something looser down low that will help spool-up without giving up slip up top. This will give you the 3000-3200 stall your looking for down low and still run the mph up top. If your car is not slow to spool you can probably tweak what you have.
Judging by your rpm drop the converter is not 600 rpm too tight. Sure it won't stall close to their advertised rating but that's not unusual for guys not familiar with the turbo buick stall requirements. The rpm drop on the 2-3 gear change is good which indicates the converter is working up top. If it is slow to spool you are experiencing the common problem with alot of converters. Tight down low and good up top. The only way to fix this is to swap to something looser down low that will help spool-up without giving up slip up top. This will give you the 3000-3200 stall your looking for down low and still run the mph up top. If your car is not slow to spool you can probably tweak what you have.
ttypewhite
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Dusty my PTC converter sprays trannie fluid in a straight line front almost drivers wheel to passenger wheel, i think there is a crack in the converter casing. Its like a mist and gets on the crossover of the headers and starts to smoke, what would you recommend i do?
Dusty Bradford
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Box it up and I'll have it picked up so we can see what's going on with it.
afr is 10.8.....i thought it was 8.5 too.....forgot to change the wideband selection on home computer when i loaded the program
seems to spool pretty quick...Dusty Bradford
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afr is 10.8.....i thought it was 8.5 too.....forgot to change the wideband selection on home computer when i loaded the program
Honestly, if your happy with the spool-up I see nothing wrong with what you have. Turn the boost up and see if it continues to go faster.
The rpm at which an engine builds boost doesn't dictate if the converter is to tight or to loose. Some engines will build boost sooner than others because of a multitude of variables within the combo. It is true a 66mm likes to see rpm in the 3000 rpm range before it builds boost but if the boost comes in sooner it's not necessarily a bad thing. The reason I ask about the 0-1# stall rpm is to help me determine the cars needs based on input from the car owner. I'd say your rpm is on the low side for a 66mm to spool well but since your happy with the spool-up there is obviously something in your combo that makes it work even with the low stall speed. As for it being a long ways away from it's rating by the builder.....don't pay much attention to it. Most companies are used to dealing with a V8's so you have a converter that stalls 3400rpm behind a stout V8, thus the 3400 stall rating.
