On the Dyno today...
07-26-2008, 06:11 PM
#101
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yeah but at the power level we are at it is more of how the tc are rated at.
what i think my problem is , the converter sees about 400 lb ft of torque on the stall with very small amount of booost ( 1 psi on launch at 3k rpms) and then at 5500 rpms im making 2x that much if not more. then i hit it with the nitrous ( a lil 125 shot) and the converter just flash's higher i remember looking at my tach throught the 11.4 run and i was at 6k or higher from almost all of second and 3rd gear.
the one thing scaring me about the precison converter is that for some odd reason i broke 2 input hubs on them before for some reason , what it was i have no clue but it could have been the pump it self a bent flywheel from grenading my motor but when i changed to the tcs and a new flywheel the probelm was gone. so i may try my luck with the pi.
what i think my problem is , the converter sees about 400 lb ft of torque on the stall with very small amount of booost ( 1 psi on launch at 3k rpms) and then at 5500 rpms im making 2x that much if not more. then i hit it with the nitrous ( a lil 125 shot) and the converter just flash's higher i remember looking at my tach throught the 11.4 run and i was at 6k or higher from almost all of second and 3rd gear.
the one thing scaring me about the precison converter is that for some odd reason i broke 2 input hubs on them before for some reason , what it was i have no clue but it could have been the pump it self a bent flywheel from grenading my motor but when i changed to the tcs and a new flywheel the probelm was gone. so i may try my luck with the pi.
Can't wait for the new track #'s as well!
07-28-2008, 09:40 AM
#103
Thanks Krambo!
I did some logging yesterday and it does look like the larger heat exchanger is helping keep IAT's down. With the standard XR I would normally be at 30* over ambient and temps would climb say from 115* - 140* Now, after making a cool run in 75* weather the IAT's went from 99-110* A few more runs after stop and go traffic and temps went as high as 120* still significantly better.
more to come.
I did some logging yesterday and it does look like the larger heat exchanger is helping keep IAT's down. With the standard XR I would normally be at 30* over ambient and temps would climb say from 115* - 140* Now, after making a cool run in 75* weather the IAT's went from 99-110* A few more runs after stop and go traffic and temps went as high as 120* still significantly better.
more to come.
07-28-2008, 11:47 AM
#105
I am curious to see what all needed to be freshened on you tranny, I know you have put some miles on it and made a lot of track passes... Seems like your the one really pushing the limits of the tranny, just wondering what all they did to it when you sent it back.
07-28-2008, 12:10 PM
#107
I will, yes, this fall, it's just too hot by mid day here right now for me.
I have a few things to work out before I hit the track but yesterdays pulls felt pretty good (boost only), I made a couple 4wd launches and a few 3-2 wot runs logging no KR.
07-28-2008, 01:38 PM
#110
TECH Veteran
Right now it's 60's here at night and high 70's to low 80's during the day. I like to go racing when you're wondering if it's going to snow that day. Traction can be tough, but power is good.