Author Topic: Shift RPM?  (Read 15911 times)

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Offline TexasT

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Re: Shift RPM?
« Reply #15 on: August 02 2018, 07:10:14 AM »
How does the new nlu converter "act" compared to the lockup? Are they different rated stall speeds? Was the gain picked up in the 60' or on the top end? I'd be interested to see the time slips comparing the two runs and what the weather conditions were for each day.

Thanks for the good info.
Rich

"Goals without actions are just dreams."

Offline Steve Wood

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Re: Shift RPM?
« Reply #16 on: August 02 2018, 08:38:20 AM »
Dan sent me PAC 1200 and I set then as instructed.I have a set of Johnson short travel lifters.
What are the numbers on PTE cam?

I don't recall the numbers.  It was 210/210 and I "think" the lift was very close to 0.500".  The '90's are a very long way away for me LOL  I know the cam has never quit pulling.  It just stopped when it hit 6200-6300 and it backfired suddenly :D  the curve on PL had not topped out.

Dan was still at PTE in those days and he may have picked the profile.  It was a Comp billet roller. It came with Speed Pro rollers.  I asked Billy about using Comp short travel rollers and he said he did not like them.  That may well be because they were chinese and he had problems with them-or maybe he just thought I was less likely to blow it up with them....:D  He has known me for a long time.

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Offline Forzfed

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Re: Shift RPM?
« Reply #17 on: August 02 2018, 03:02:50 PM »
Billy used them and then stopped.  He posted about problems with them but I don't recall his issues.  Some of us consider him to be somewhat legit in the buick business :D  Good thing about Billy is that he does not care what others think unless they are consistently faster than him.
Bill is definitely one of the top guys in the Buick world but he likes to rev the crap out of these motors.  Remember people crying when he beat them with his destroked 231?

Offline Steve Wood

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Re: Shift RPM?
« Reply #18 on: August 02 2018, 03:35:49 PM »
Yep, it sounded good!
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Offline Tim Hensley

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Re: Shift RPM?
« Reply #19 on: August 02 2018, 03:43:47 PM »
The 60 were about the same I’ll look tonight when I get home at the slips closer.i was more focused on my hitting the rev limiter.the stall is supposed to be the same 2800 but no laptop no good data. But my bestET and mph to date and not a good pass just trying to focus on
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Extreme Auto stage II trans and converter

Offline TexasT

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Re: Shift RPM?
« Reply #20 on: August 02 2018, 03:50:18 PM »
Post em up if you can. I'd like to see the splits and mph at the splits too.
Rich

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Offline Steve Wood

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Re: Shift RPM?
« Reply #21 on: August 02 2018, 03:53:48 PM »
That converter should be better than the Edge by a good margin
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Offline TexasT

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Re: Shift RPM?
« Reply #22 on: August 02 2018, 04:33:50 PM »
I'm sure it should be but without slips it is hard to tell how much. Or maybe a dyno sheet but I'm more into track performance as I tend not to race dyno sheets. I want to see how it is getting to the ground. 
Rich

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Offline Steve Wood

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Re: Shift RPM?
« Reply #23 on: August 02 2018, 06:18:20 PM »
My comment had nothing to do with anything you posted.  It was my opinion based on past observations and was not intended to interfere with your requests for data.
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Offline Tim Hensley

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Re: Shift RPM?
« Reply #24 on: August 03 2018, 05:25:32 AM »
LU.                         NL
60 1.783.              1.781
330  4.961            4.898
660. 7.646.           7.548
Mph 91.29.            91.98
1000 ft9.700.        9.852
ET 11.971.            11.798
Mph 112.80.          115.95
This was my best ever pass with LU Best 60 foot ever lots of 1.85 60 ft  before this pass.My 1/8 mile mph has been consistent low 91s and 1320  in 112s ET 12.0s and logs show 5300 through the traps


This NL pass I tried to get a good 60 but was not sure about how to stage the new converter the brakes were holding good @ 2800 and 5 lb boost I think it could have gone a little higher.Then I had to lift when it hit the rev limiter to get it to make the 2-3 shift befor the 1/8   And best 1320 mph and ET ever And just looking at the rpm it was 5000 at the line.same everything boost ,timing and track
Arizona GN109 forged rotating assembly
DLS 210-210
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Extreme Auto stage II trans and converter

Offline TexasT

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Re: Shift RPM?
« Reply #25 on: August 03 2018, 06:02:03 AM »
Good info. Looks to be tighter in the upper mph as the lower looks very similar. I would try a harder launch. I think you can get it to the 1.60s with decent track prep and good tires. Maybe quicker with some work at it.

I didn't think you were trying to limit info Steve. I'm a junkie . I understand all doesn't apply to everyone, but some can apply to a few of us.
« Last Edit: August 03 2018, 07:00:20 AM by TexasT »
Rich

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Offline Steve Wood

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Re: Shift RPM?
« Reply #26 on: August 03 2018, 08:51:43 AM »

I didn't think you were trying to limit info Steve. I'm a junkie . I understand all doesn't apply to everyone, but some can apply to a few of us.

You still seem to be accusing me of  wanting to limit data which must be something you assume I would do.  There is no need to try to defend your desire for data. Every real racer is a data analyst, or, has one in his "team".

Let me point out a few things which makes it impossible to draw conclusions about the converter performance from the data at hand.

What were the ambient weather conditions?  Temperature, humidity, and barometric pressure from run with the lock up and this run?  What was the track temperature?  These are necessary to establish some kind of datum or baseline.

What kind of tires is he running and was the pressure the same?  Was the track prepped the same on both runs?  Did the tires spin on either run?

Was the Edge converter being locked on top end?

There were a couple more points I wanted to make, but, I forgot them while I was feeding goats and sheep this morning because I was concentrating on trying to remain vertical and being determined to kick every thing that butted or hooked me trying to get to the feed in the sack in my arms :D

In short, the data cannot be analyzed in a meaningful way-we knew that already, of course because we had no logs as well as the things I mentioned.  Too bad we cannot overlay (in the computer) two PL logs to see the difference between runs.

What I see in the time slips is that the non lock up is more efficient on the top end.  How much, I don't know because we don't know if the Edge was locked.  And, I agree that he needs to leave at a higher boost to try to pick up the bottom end.

Looks to me like he has some left in the tank...







Steve Wood

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Offline TexasT

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Re: Shift RPM?
« Reply #27 on: August 03 2018, 09:50:43 AM »
I must really come off wrong.and I post that with a big smile. :D
I know you have been into these cars from the get go and know how much conditions make a difference. Even the conditions you and I experience are different than the guys up north. Newer tech doesn't always work but I do think the newer converter tech is nothing short of amazing. The ability to flash em up and then tighten it down on the big end is mind bending compared to the stuff from the eighties.

I still think looking at slips from the same car even though it has different parts and is on a different day has merit. Knowing what the driver was doing and how it launched is a crucial piece of info too. That is why I asked how the converter acted compared to the old one. You get to read into the info or take things away based on what is said and the experiences.

And a big thank you to Tim for posting the info.

And I don't think you are with holding info.(  :D also with a big smile)

Another thing I notice is the 1000' time. While the eighth, and quarter are quicker for the nlu the Lu 1000' is a tenth off. Shifting prob? Trans not getting a good 1-2? Could be some more time in that.
« Last Edit: August 03 2018, 09:55:32 AM by TexasT »
Rich

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Offline Steve Wood

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Re: Shift RPM?
« Reply #28 on: August 03 2018, 10:01:26 AM »
Locked or unlocked? You could be a doctor and do your diagnosis from the golf course! :D
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Offline Steve Wood

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Re: Shift RPM?
« Reply #29 on: August 03 2018, 10:14:45 AM »
The last fast car I messed with out here is a pro mod vette with a bbc.  We went to the track in the summer and the temp was 102.  The car was blubbering to my ear and it ran an 8.80.  I told the guy it was way rich and we needed to rejet the carbs to lean it out.  He refused because he was afraid to mess up the tune.

The sun went down and the temp dropped 20 degs.  The car ran 8.40 and had a nice crisp sound...Ambien t conditions have a big effect on tuning.  Brad is changing his fueling all the time to suit the day and he runs very consistently.

I stand by my beliefs that you cannot compare time slips from different times, weeks, or maybe months :)

The fact that the car picked up 3 mph on a non lock up converter is enough reason to question any analysis.  There are no short cuts on the road to paralysis by analysis

 :rock: :cheers:
Steve Wood

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A lot of broken parts does not make you a racer; it makes you a slow learner.

 

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