New PB, first trip out.
11-16-2013, 02:19 PM
#21
Safety Car
From the vid, the car sounds like its working very well! Nothing exciting, it just goes like C5's do.
Very cool. It will go quicker and faster!
Glad to see you make some runs after being so frustrated with it for awhile.
Ron
Very cool. It will go quicker and faster!
Glad to see you make some runs after being so frustrated with it for awhile.
Ron
11-16-2013, 03:50 PM
#23
Le Mans Master
Thread Starter
Looking at the logs, it seems to flash to about 5200 rpms from a 1900rpm launch... That's actually pretty damn near where I need it. Drops to 5800 ish after each shift....That's maybe a tad high....200-300 rpms high..... and then the trap rpm is about 200 rpms high for 145...
I'm gonna talk to Coan and see what they think... I don't know if locking the converter completely will work well on a blower setup...(RPM dependent)...
Thanks for the info tho...gives me something to compare to..
11-16-2013, 03:58 PM
#24
Le Mans Master
Thread Starter
On another note.... I took it and had it weighed today... I'm surprised.. Its lighter then I thought it would be. The track scales must have been off the last time I weighed on them.
I'm in the car for this weighing...(I am 180lbs on the nose)
I thought for sure it would be 3700+...... Last time I weighed it at the track, it was 3535lbs with me in it, that was before 70lbs worth of roll bar and before the auto swap with all the heavy drive line stuff.... Easily 100lbs over the stick stuff... Track scales must have been off.
I asked the weigh manager how accurate the scales are and if they round up....He said they do not round up and will weigh to the pound.... just sheer luck it was 3600 on the nose.
So now its putting less power to the tires then I thought...
I'm in the car for this weighing...(I am 180lbs on the nose)
I thought for sure it would be 3700+...... Last time I weighed it at the track, it was 3535lbs with me in it, that was before 70lbs worth of roll bar and before the auto swap with all the heavy drive line stuff.... Easily 100lbs over the stick stuff... Track scales must have been off.
I asked the weigh manager how accurate the scales are and if they round up....He said they do not round up and will weigh to the pound.... just sheer luck it was 3600 on the nose.
So now its putting less power to the tires then I thought...
11-16-2013, 04:08 PM
#25
Le Mans Master
Thread Starter
Congrats Alan. You dropped the typical 0.5 seconds when converting from manual to auto. Everyone that I see that makes the swap always improves by at least half a second on their first outing. After that it's just a matter of dialing everything in.
Did you log your boost? Was it normal or slightly lower? Also, you mentioned the amount of moisture in the air. My car has always hazed the tires after the 1/8th mile when there is that much moisture in the air. If the tires are slipping, you won't be putting all the power down and won't hit the higher mph. You picked up 29 on the back half and many times you will see 35 mph which would give you the 150 mph trap.
Did you log your boost? Was it normal or slightly lower? Also, you mentioned the amount of moisture in the air. My car has always hazed the tires after the 1/8th mile when there is that much moisture in the air. If the tires are slipping, you won't be putting all the power down and won't hit the higher mph. You picked up 29 on the back half and many times you will see 35 mph which would give you the 150 mph trap.
Ben, I was seeing the same boost I always see... Its always around 20-21psi at the 6600 shift point. I saw 21.5 ish at the trap. It would have picked up another psi or two with the velocity stack for sure.
With the 4l60s and their gearing, around 30mph is a good strong back half gain... MAYBE 31 here and there... 35 mph is stick car stuff.... Mine gained 40 mph on the back half with the stick.
I was hoping for 30 mph back half.... I really thought it would run 118-119 in the 1/8 but.... no dice.
I didn't get to play with shift points or anything, there is usually some gain in getting the shifts just right. I just set it at 6600 shifts and let it go and hope it was good enough.
I will say this RPM level 7 shifted flawlessly and very firm, even with the sloppy converter..
11-16-2013, 06:00 PM
#26
Le Mans Master
Looks nice AJ.
Awesome nice job!! similar to my cars time, I don't run as much boost as you and don't lock my converter, I wish I did the HP tuners like you, I could get more out of mine,like you I only get 1 or 2 passes every time. I'm surprised you didn't get the boot!
I'm scared to try harder and add boost and race gas,more timing ect. not really worth breaking the cars, I know yours and mine can go faster Its just not worth it to me. 148 mph is good.
good luck shooting for faster times
I'm scared to try harder and add boost and race gas,more timing ect. not really worth breaking the cars, I know yours and mine can go faster Its just not worth it to me. 148 mph is good.
good luck shooting for faster times
11-16-2013, 06:34 PM
#28
Safety Car
BTW last I checked, mine is also right at 3600# with me in it.
11-16-2013, 07:15 PM
#29
Le Mans Master
Thread Starter
With this info using a couple of the online converter slip calculators, its showing to be 11.1-11.5% slip depending on which calc you use..... So its pretty sloppy...
I'm gonna try again next Friday night with the velocity stack, Q16 and bump the timing to 17*, this will gain me about 50-60rwhp atleast... I want to see if the mph comes up....If not, I know the converter is killing it.
11-16-2013, 07:33 PM
#30
Le Mans Master
That's awesome Alan! Congrats on the new best ET. That's a great setup and I'm sure you will pass 150 and dip in to the high 8's on full tilt. Congrats again!
11-16-2013, 07:53 PM
#33
Le Mans Master
Thread Starter
Last edited by ajrothm; 11-16-2013 at 08:03 PM.
11-16-2013, 08:06 PM
#34
Le Mans Master
Thread Starter
Yeah I know about the traps, but I'm trying to calculate my trap RPMs as close to 145-146 mph as I can. Even 100 rpms either direction makes a huge difference in converter efficiency. HPT showed my speed to be 147 mph at exactly 9.35 secs into the run. (And I know my speedo is 2 mph fast at 70 mph so....Its pretty close this way)
11-16-2013, 08:22 PM
#35
On another note.... I took it and had it weighed today... I'm surprised.. Its lighter then I thought it would be. The track scales must have been off the last time I weighed on them.
I'm in the car for this weighing...(I am 180lbs on the nose)
I thought for sure it would be 3700+...... Last time I weighed it at the track, it was 3535lbs with me in it, that was before 70lbs worth of roll bar and before the auto swap with all the heavy drive line stuff.... Easily 100lbs over the stick stuff... Track scales must have been off.
I asked the weigh manager how accurate the scales are and if they round up....He said they do not round up and will weigh to the pound.... just sheer luck it was 3600 on the nose.
So now its putting less power to the tires then I thought...
I'm in the car for this weighing...(I am 180lbs on the nose)
I thought for sure it would be 3700+...... Last time I weighed it at the track, it was 3535lbs with me in it, that was before 70lbs worth of roll bar and before the auto swap with all the heavy drive line stuff.... Easily 100lbs over the stick stuff... Track scales must have been off.
I asked the weigh manager how accurate the scales are and if they round up....He said they do not round up and will weigh to the pound.... just sheer luck it was 3600 on the nose.
So now its putting less power to the tires then I thought...
That's probably wrong. Our truck scales round to the nearest 20 lbs. I've never heard of a truck scale weighing to the pound. They're weighing trucks that are 80k+ lbs so weighing to the pound is pointless.
Last edited by danieloneil01; 11-16-2013 at 08:24 PM.
11-16-2013, 08:26 PM
#37
Oh, nice runs. Not a fan of RPR and they're open once a week racing. They see the amount of people that come on Friday. Do like HMP and be open on Sundays but no street tires allowed.
11-17-2013, 10:46 AM
#39
Drifting
id kill myself if It weight that much hahaha. you buy a vette to be light and now it weighs as much as a f body lol
good time for 2nd time out reguardless.
11-17-2013, 11:50 AM
#40
Melting Slicks
Its 3600# with Driver +Iron block+F1r blower kit. Did you think it was still going to weigh 3200#?