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Author
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Topic: Think I'm gonna like this thing....
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Dave_C
Gearhead Posts: 666
From: Gadsden, Al
Registered: Aug 99
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posted 03-16-2003 10:51 PM
   
1.12 60 fts. Took the motor on a stick to test n tune today. Made 5 passes. No full passes. First, had a problem with the shifter cable and then the air shifter, so it wouldn't go into 2nd gear. Hated I didn't get to make a full pass.But man, what a rush. 1.12's today, shutting it off at 300 ft or so and still running 6.0's @ only 75. It's got lot's more in it. Never played with the launch rpm. 4000 every time. I figure with a good tuneup and higher launch rpm and a good track it'll go 1.05 60' or better. The alky setup is running rich also. Gotta lean it out. Seemed to find a delay setting I liked. The last two lights were .508, .504. In an earlier post I talked about the converter. Thought it might be too loose. It stalls to 6000 on the trans brake. Doesn't go that high on launch. Guess it's because of the car's weight. It seemed to like it. It stalls mid 5000's. Not sure exactly. I was busy. Later,
David Cole
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jsracingbbf
Gearhead Posts: 1217
From: Batesville,MS. , U.S.A.
Registered: Mar 2002
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posted 03-16-2003 11:48 PM
 ahhh yes the smell of alky and tire smoke!  it's a good thing I figure it's a better than even odds that I'll see your digger run this year at one of these tracks 'round here. ------------------
Jerry
69 Mustang Pro ET Drag
70 Mustang retired former footbrake car
" If Bracket Racing was EZ everyone would be doing it!"
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Ryan Wilke
Gearhead Posts: 1115
From: Stanton, Michigan 49707
Registered: Oct 2000
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posted 03-16-2003 11:51 PM
WAY , Dave! 1.12 60'ers.....sounds like you've got it hooked! Too sweet! Shutting 'er down at 300' and still 6.0s; sounds like you built the Big Bertha Ford mill stout! Keep us informed! Good Luck on completing the dial-in! Ryan 
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clevelandstyle
Gearhead Posts: 494
From: Connersville, IN
Registered: Jul 2001
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posted 03-17-2003 12:33 AM
Aren't you glad that you tried the converter?
I can't wait to hear the 1/8 times. ------------------
Ben
Grabber Green '70 Mach I 351C 4V
Robbin Egg Blue '79 Fairmont 351C 4V
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Fastymz
Moderator Posts: 9095
From: Reno Nv USA MEM#1240
Registered: Apr 2001
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posted 03-17-2003 01:47 AM
Dave thats so cool,1.12 60's 
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SCOOP
oddly obsessed with big scoops on little Mustangs 2.26 60'S
14.9 @ 90.86MPH 65 coupe,351w,C4,Big Boss 429 hood scoop,8"3.40 TracLoc,Cragar SS,Black Suede. https://mustangsandmore.com/ubb/Fastymz.html
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kid vishus
Gearhead Posts: 3894
From: middle of NC
Registered: Oct 2000
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posted 03-17-2003 07:30 AM
Glad you had some decent weather and could get out and "play" a little. It rained here all weekend, AGAIN.
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Dave_C
Gearhead Posts: 666
From: Gadsden, Al
Registered: Aug 99
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posted 03-23-2003 07:58 PM
The track wasn't as good today. 1.14 60'. But it went 5.01 @ 139. Unreal how hard this thing pulls. Ran that twice and then ran a 5.04 due to tire spin. The track was really going away. Lot's of street cars dragging water and gravel to the starting line. It's still got more in it. No tuning done yet. Timing is locked at 36?. Gonna try to lowering to 34? and see if it responds. If not I'll go the other way. EGT with the toilet is looking real close to right. Seeing max temps of 1045. From 1050-1100 is supposed to be what to look for. I'll lean it out 1-2 pill sizes and try it. These times are launching @ 4200, but short shifting it @ 6400. It'll spin much higher, but I'm tring to take it easy on the Scat cast crank. It seems like it would like a shift point around 6900-7K. It's still pulling like a freight train on the top end. Shut it off after the 1/8 and still was running 8.20's in the 1/4 at only 118-120 on the brakes. Flat out it it should run prob 7.80@ 175. Later, David Cole
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clevelandstyle
Gearhead Posts: 494
From: Connersville, IN
Registered: Jul 2001
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posted 03-23-2003 08:35 PM
quote:
Originally posted by Dave_C:
Shut it off after the 1/8 and still was running 8.20's in the 1/4 at only 118-120 on the brakes.
Yeh Ha! You gotta love that. ------------------
Ben
Grabber Green '70 Mach I 351C 4V
Robbin Egg Blue '79 Fairmont 351C 4V
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Fastymz
Moderator Posts: 9095
From: Reno Nv USA MEM#1240
Registered: Apr 2001
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posted 03-23-2003 08:51 PM
Dave thats dam fast.I'd need a change of shorts for sure. ------------------
SCOOP
oddly obsessed with big scoops on little Mustangs 2.26 60'S
14.9 @ 90.86MPH 65 coupe,351w,C4,Big Boss 429 hood scoop,8"3.40 TracLoc,Cragar SS,Black Suede. https://mustangsandmore.com/ubb/Fastymz.html
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kid vishus
Gearhead Posts: 3894
From: middle of NC
Registered: Oct 2000
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posted 03-23-2003 09:14 PM
quote:
Originally posted by Dave_C:
Seeing max temps of 1045. From 1050-1100 is supposed to be what to look for. David Cole
Most of the guys I used to race with run around 1150 EGT temps. They claim so long as it stays under 1200 it's safe. They also claim a little lean is more consistant than a little fat. I don't know for sure, I'm just passing on what I have heard. I do know my buddy with a dual toileted 540 bbc powered '63 vette that runs 5 teens, runs his around 1250.
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jsracingbbf
Gearhead Posts: 1217
From: Batesville,MS. , U.S.A.
Registered: Mar 2002
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posted 03-23-2003 09:33 PM
GET OUT OF TOWN BOWTIE BOYS Dave's got a BA digger. Low 4's look out. JS
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Ryan Wilke
Gearhead Posts: 1115
From: Stanton, Michigan 49707
Registered: Oct 2000
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posted 03-24-2003 08:26 AM
quote:
Originally posted by Dave_C:
These times are launching @ 4200, but short shifting it @ 6400. It'll spin much higher, but ....I'm tring to take it easy on the Scat cast crank. It seems like it would like a shift point around 6900-7K. It's still pulling like a freight train on the top end.
What's the deal, Dave? Have you been told/are you aware of a problem with the durability/safety of Scat cast cranks? Ryan
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Dave_C
Gearhead Posts: 666
From: Gadsden, Al
Registered: Aug 99
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posted 03-24-2003 08:50 AM
quote:
Originally posted by Ryan Wilke:
What's the deal, Dave? Have you been told/are you aware of a problem with the durability/safety of Scat cast cranks?
Ryan
Not really a problem. Just taking it easy on it. I want the crank to last 2 seasons, then I'll have enough dough saved to put a billet crank in it. This crank in the this thing is huge and very heavy. 4.500 stroke, 3.00 mains, BBC rod journals. It's internally balanced, but the bob weight is something like 2300 grams. I guess I'm just paranoid. These cranks are cast steel and supposed to be about 30% stonger than a cast iron crank. Scat says that are good to 900 hp. I have read here and there about dragracers finding minor stress cracks after a season or two when they had the crank magnafluxed. I don't think the stress cracks are from rpm. I think they are from popping/banging while on the Two-Step. Two-Steps are the not the best thing for any crank, especially a big heavy crank like mine running on methanol. The cracked cranks I have read about were all still running fine when found, but I don't want to take the chance of it grenading "if" there were to be one of them in mine due to the Two-Step. Most likely there were be no problem. There I go, being paranoid again. It is a good feeling to know that anytime I want a 4 sec pass all I have to do is turn the rpms up a little more. Say 6800 instead of 6400. Later, David Cole [This message has been edited by Dave_C (edited 03-24-2003).]
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Ryan Wilke
Gearhead Posts: 1115
From: Stanton, Michigan 49707
Registered: Oct 2000
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posted 03-24-2003 11:14 AM
I understand now. Do most dragsters run a two-step?
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