Track results

[fireberd350]

Chip: Casper thumbwheel w/ #3 setting -- 18deg timing
94 Octane
Dump pipe CLOSED
35PSI in tires
Temp: 47-42(COLD!)

run 1 -- this was just an 1/8th mile run b/c the rest of the track was a little moist
FP: 42 BST: 12 KR 4.7 o2: 794 launch: 0
R/T -- .566
60' -- 2.194
330 -- 6.092
1/8 -- 9.363
MPH -- 74. 87

run 2
FP: 44 BST: 12 KR 6.1 o2: 800 launch: 2#
R/T -- .762
60' -- 2.183
330 -- 6.101
1/8 -- 9.385
MPH -- 74.53
1000 -- 12.229
1/4 -- 14.634
MPH -- 93.84


run 3 -- BEST RUN
FP: 44 BST: 13 KR 6.1 o2: 7xx?? launch: 4#(very little spinning)
R/T -- .763
60' -- 2.112
330 -- 5.905
1/8 -- 9.109
MPH -- 76.44
1000 -- 11.885
1/4 -- 14.235
MPH -- 95.92


run 4
FP: 44 BST: 14 KR 11.2 o2: 800 launch: 3#
this run i didnt change anything except OPEN the dump pipe
R/T -- .464
60' -- 2.170
330 -- 6.015
1/8 -- 9.251
MPH -- 75.65
1000 -- 12.060
1/4 -- 14.442
MPH -- 94.65


run 5
FP: 44 BST: 14 KR 8.2 o2: ~800 launch: 0
R/T -- .551
60' -- 2.222
330 -- 6.086
1/8 -- 9.342
MPH -- 75.08
1000 -- 12.167
1/4 -- 14.556
MPH -- 94.42



don't think i did too bad for my first time EVER racing in the GN or any car. anyone have any kind of analysis of this and can recommend me to work on anything?

thanks, Steve

 

[racemybuick]

hey, 14.2

Not bad for bald tires! How long between runs did your car have? Make sure to give it ample time to recover. I'd say for the better 60 footers, and overall run, get the drag radials. If you want faster, maybe blue tops (36#) injectors. Everything else looks to be an awsome recipe, as I said before. If you ran between 14-16 lbs of boost on 94, I'd say try the race gas and pump that boost up a notch, maybe 16-17lbs. I think the 13's are just in site with the tires and some 110 octane! Good job!
Not bad trap speeds either!

John

 

[BuickTV6]

Thats pretty good man. how much boost are you running on that TA33 of yours?

 

[fireberd350]

Originally posted by BuickTV6
Thats pretty good man. how much boost are you running on that TA33 of yours?

the boost is stated on the top line of each run "BST 14"

i only changed the boost once really, after the second run i turned it up 1 full turn. That's when i got the 14.2. then on the next run I tried opening up the dumo just for the hell of it and the boost raised for some reason but then i closed the dump for the next run and turned the boost up 1/2 turn for the last 2 runs.

Yeh, i definatly need some tires and some race gas and I should be knockin on the 12sec door

I forgot to mention also that I had a NASTY exhaust leak somewhere on my up or down pipe. It was pretty bad so i tried fiixing it before i left and made it worse I've never heard it so bad, and it definatly did not run as strong as it normally does, so I tihnk I have a 13sec(or damn close) run in it as is if i can fix that damn leak

i dont think I will run my car at atco on the 2nd tho. I'd rather save up and get some gas and tires first. I may see ya there tho.

hey, racemybuick. There is a MAGNA meeting this sunday if your interested. Just a bunch of mid-atl guys meet up once a month and shoot the ****. Usually over 15 cars there. A nice mix between some TTA's, GN, T's, hybrids(jim dunns 2 wagons), and my lonely hotair, you can get more info on turbobuicks.com under the MAGNA forum(the VERY last one on the list)

later Steve

 

[cool 84]

That's a lot of KR for only 14psi, low timing, and 93 octane. Still, good mph for such low boost.

 

[boostmaster]

Good Run

I think KR is rich knock, static fuel pressure in my opinion is too high for such low boost. A slightly leaner mixture would probably have yielded better results. But still a good run.

 

[6SENSE]

KR

Your using a scanmaster right? When you hold down the recall button, are you checking to see at what mph the KR and the low O2's are coming in at? This will help you to figure out where that KR is coming from, how dangerous it is, and where you need to focus on to improve.
Alright, let me clarify a bit. First off you need to know if the KR is coming in high gear/ higher mph. If it is coming in at lower mph, it may be at a shift, due to wheel hop, etc. It may be actual detonation, but [let me carefully put this] it is not nearly as bad as the detonation on the topend. This early KR is usually split second. The KR on the topend doesnt dissapear because theres no shifts left, it will stay and get worse if you lean anymore (if boost rises). That is what makes it much more dangerous, its there for an extended period of time. Back to that lowend KR. Dont get me wrong, ANY KR is not good, whether topend or lowend of the run, when you are trying to improve numbers any KR will hinder you. If it said 14 degrees of KR then yes the ECM took out 14deg of timing, even if just for that split second. Not good for performance. Hopefully you see the difference though I was trying to show, much more dangerous at higher mph. You identify where its coming in then you go from there. May need an adjustment with chip, or ??? That #3 setting on the thumbwheel is a low timing setting (18deg) but the fueling isnt changed from stock in that setting. The power enrichment fuel is recurved starting in setting #4 (20deg). TA33 works well with 36# or 37# injectors too. Your not running enough boost to be getting knock like that, so you need to find out. All in all good #s though Be proud, its a good start. You now have a baseline to work from. Definately shows good things to come.

P.S. Need to identify whether that exhaust leak is before or after the turbo. That can really throw things off (fueling) if it is coming from your uppipe.
Also, I have never really figured out the rich knock thing. IMO I think it may just be a myth, just an excuse when ya cant find the real culprit. Besides your 800 O2's ARE NOT rich, and your static FP is not high even for the boost. 800 O2 is border line if your running pump gas. Remember the saying "leaner is meaner". Well, it really has no place with TR's. You can start turning down FP, etc. etc. but then you cant turn up boost. Keep the FP around 42-43 and try to get that boost up, dont go backwards and limit yourself. "Leaner is Meaner" may have got you a couple tenths, but take a look at the mph, thats what tells the whole story You need fuel and boost for topend. If you run a 14.2 @ say 98mph you will be happy, because you know that even though the ET wasnt spectacular you know from the mph that you just werent putting all that power down to the ground. You can cut a 13.5 just with some decent street tires. Keep that mph going up, I noticed yours went up but then started going down in the last couple runs.

 

[boostmaster]

rich knock

I used to think rich kr was a myth myself until I started experiencing it at the track. what typically happens is that unburned fuel ignites in the hot exhaust system typically in the headers or crossover before the turbo. Now 6sense youv'e made a few good points in you post about tuning, but I can say from experiance at that low boost level and 18* of timing, even w/ a TA33 he should not be experiancing that much kr. Which leaves two options, mechanical- emission related or RICH KR!!! I'm sorry but in my opinion 42-45psi is too much static fuel pressure for that low boost. On 93 octane @ 37-40psi I could run 18psi of boost w/ a TA49 and 30lbers on a JL 18* chip w/ no more than 6* of KR which was on the shifts and 3* in 3RD gear. I say find your kr issues lean out the mixture and run some 13's on pump gas.

 

[6SENSE]

Well weve already said everyones car was different, but that works out just fine. Through all our different experiences theres alot of learning to be had on this board and thats what makes it great. Now come on guys lets get these hotair ETs dropping!!

 

[6SENSE]

Re: rich knock

Originally posted by boostmaster
...........but I can say from experiance at that low boost level and 18* of timing, even w/ a TA33 he should not be experiancing that much kr. Which leaves two options, mechanical- emission related or RICH KR!!! I'm sorry but in my opinion 42-45psi is too much static fuel pressure for that low boost. On 93 octane @ 37-40psi I could run 18psi of boost w/ a TA49 and 30lbers on a JL 18* chip w/ no more than 6* of KR which was on the shifts and 3* in 3RD gear. I say find your kr issues lean out the mixture and run some 13's on pump gas.

One thing, If its rich KR, then whats up with the low O2s? I would think that the KR would be present, but the O2s would be up kind of glaring out as hey this dont match up This I have experienced, but with KR present and O2s somwhat down, it would indicate actual detonation would it not. He was also loosing mph aswell. Just another 2cents.

 

[boostmaster]

Look at his times and mph, both of his runs with the lowest kr were when his O2's were in the 700's after that as the fuel got richer the kr got higher. His best run was with his O2's were in the 700's. I think there's a connection. But Istill say he has other issues, cause he should not be getting any KR at that low boost level.

 

[6SENSE]

Originally posted by boostmaster
Look at his times and mph, both of his runs with the lowest kr were when his O2's were in the 700's after that as the fuel got richer the kr got higher. His best run was with his O2's were in the 700's. I think there's a connection. But Istill say he has other issues, cause he should not be getting any KR at that low boost level.

I hear what your saying, but remember his boost was going up aswell, not just fuel. Regardless, I agree, something else has to be up. He shouldnt be having any issues with boost that low. Need to find out about that exhaust leak, whether its from the upipe or not. Could be throwing off fueling. What are the BLMs at idle?

 

[fireberd350]

Originally posted by boostmaster
But Istill say he has other issues, cause he should not be getting any KR at that low boost level.

TELL ME ABOUT IT I have ALWAYS had a knock problem and its bothering the hell out of me!

6SENSE: I dont remember off hand my idle BLM's.

thanks for the help so far guys....would be lost w/o yas!