Notices
C6 Tech/Performance LS2, LS3, LS7, LS9 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

New PB - [email protected] 1.44 60 foot

 
Old 02-13-2012, 02:04 PM
  #41  
Joe_G
Tech Contributor
Support Corvetteforum!
Thread Starter
 
Joe_G's Avatar
 
Member Since: Jul 2002
Location: Ft. Lauderdale, FL
Posts: 14,903
Thanked 216 Times in 184 Posts
St. Jude Donor '08
Default

Originally Posted by LEAVINU View Post
Congrats Joe!

What's she weighing in at these days?
Last time I weighed 3195 (car only) with about 1/4 tank. Yesterday I had 1/2 tank or a little more, so I'd guess 3200 or so. I was probably 200 with my heavy winter coat.

I actually left my garage with a light jacket...as I rolled up the windows, went back in for my rarely used winter coat! We florida folks aren't used to the first digit of our temp starting with a 4...49 as I left my house.

Originally Posted by ITS STOCK View Post
Nice time Joe and killer 60'
Thanks! I am very happy with the 60's. That accelerate into the launch trick that Robz told me about is really the key.

You cannot let your car bog or it's a 1.8 60 foot. On those 1.445 launches the car never went below 4800 RPM throughout the launch process.

I have only 414 tq so I have to spin the engine. I think Z06's and Zr1's with 100+ more ft lbs are able to bog more than me (based on listening to their launches).

I think it's been proven that the stock z06 clutch will not handle a 6700 rpm launch no doubt given the much higher torque of the 427.

I wonder if a Zr1 would handle a 6700 launch with its dual clutch....
Joe_G is offline  
Old 02-13-2012, 02:13 PM
  #42  
JUIC3D
CF Senior Member
 
JUIC3D's Avatar
 
Member Since: May 2011
Location: Tampa FL (formerly Justinjor)
Posts: 5,025
Thanks: 0
Thanked 5 Times in 5 Posts
Tech Contributor
St. Jude Donor '11-'12-'13-'14
Default

Originally Posted by Joe_G View Post
Last time I weighed 3195 (car only) with about 1/4 tank. Yesterday I had 1/2 tank or a little more, so I'd guess 3200 or so. I was probably 200 with my heavy winter coat.

I actually left my garage with a light jacket...as I rolled up the windows, went back in for my rarely used winter coat! We florida folks aren't used to the first digit of our temp starting with a 4...49 as I left my house.



Thanks! I am very happy with the 60's. That accelerate into the launch trick that Robz told me about is really the key.

You cannot let your car bog or it's a 1.8 60 foot. On those 1.445 launches the car never went below 4800 RPM throughout the launch process.

I have only 414 tq so I have to spin the engine. I think Z06's and Zr1's with 100+ more ft lbs are able to bog more than me (based on listening to their launches).

I think it's been proven that the stock z06 clutch will not handle a 6700 rpm launch no doubt given the much higher torque of the 427.

I wonder if a Zr1 would handle a 6700 launch with its dual clutch....

It's interesting you say that Joe--as I've had my car bog multiple times and I still get high 1.5 60fts. If I want a low 1.5, I have to keep the rpms up but these Mickeys really stick and cause my rpms to bog down to 3500 on a few of my passes.

You say you only have 414tq though? I thought you made more for some reason. Perhaps its the additional torque that lets me "recover" from the bogged launch?

Last edited by JUIC3D; 02-13-2012 at 02:20 PM.
JUIC3D is offline  
Old 02-13-2012, 02:26 PM
  #43  
LEAVINU
CF Senior Member
 
LEAVINU's Avatar
 
Member Since: Oct 2006
Location: Seattle/Atlanta
Posts: 5,072
Thanked 11 Times in 11 Posts
Default

Originally Posted by Joe_G View Post
Last time I weighed 3195 (car only) with about 1/4 tank. Yesterday I had 1/2 tank or a little more, so I'd guess 3200 or so. I was probably 200 with my heavy winter coat.

I actually left my garage with a light jacket...as I rolled up the windows, went back in for my rarely used winter coat! We florida folks aren't used to the first digit of our temp starting with a 4...49 as I left my house.

That's in street trim though right? Surely you're not pushing 3200lbs with the drag pack and no passenger seat.


You Floridian's are something else. I was working outside in the elements Saturday night into the AM and weather.com showed 7deg's where I was standing.
LEAVINU is offline  
Old 02-13-2012, 03:18 PM
  #44  
CDaniel525
CF Senior Member
Support Corvetteforum!
 
CDaniel525's Avatar
 
Member Since: Apr 1999
Location: Toms River NJ
Posts: 3,254
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Originally Posted by Justinjor View Post
I did a few things.

1) Removed the clutch spring. Well, Joe removed it the first time we met at PBIR, but ya-it's gone.
2) Removed the inspection plates on the bellhousing.
The problem with the corvette hydraulics is that the clutch dust has nowhere to go when it is generated and it then penetrates the vulnerable slave cylinder which is why the fluid turns black.
To assist the clutch dust from exiting, I removed the 2 plastic inspection ports on the lower sides of the bellhousing. I did this a few months ago and my clutch fluid has been remarkably clean ever since. I still do the fluid swap, but what used to take 3 or 4 cycles of clean fluid to 'repair', now only take 1 cycle.
3) My burnouts are now only 3-4 seconds. I used to do longer smokier burnouts to get my Toyo drag radials hot, but these Mickeys don't take much to get them ready.

I also swap the fluid before and after the drag strip as Joe recommended to me awhile ago. I don't expect to get 450+ passes on it, but I'm knocking on the door to the 150+ pass, 70+ of which have been with the cam installed.

Hope that helps.

Big thanks again to Joe for his invaluable information he has so graciously shared with me. Thanks buddy
Originally Posted by Joe_G View Post
I do the Ranger method before and after each event religiously since new. The fluid is pretty much always clean, even yesterday evening after those events.

Removed pedal spring as soon as I put in a cam. It was sticking to the floor after the cam (but not with only bolt ons).

I don't think my car has anything plugging the inspection ports on the bell housing, I've seen tracks of clutch dust on the bell housing.

Check out the clutch dust on the video! My buddy said it looks like a pro stocker belching out dust.

Thanks for the info guys... Between you guys, I might have to move to Fla for the killer knowledge you guys have in addition to the great weather! lol Ill look into removing the dust covers!
I be a big part of the problem was the first time the fluid was ever changed was when I got the car with 29k miles! now I do it all the time and removed the spring since last trip to the track... Curious to see if thatll help! But hope to get those covers out before next track day anyway
CDaniel525 is offline  
Old 02-13-2012, 03:23 PM
  #45  
JUIC3D
CF Senior Member
 
JUIC3D's Avatar
 
Member Since: May 2011
Location: Tampa FL (formerly Justinjor)
Posts: 5,025
Thanks: 0
Thanked 5 Times in 5 Posts
Tech Contributor
St. Jude Donor '11-'12-'13-'14
Default

For me, even if removing the spring didn't do anything for performance, it was such a relief to rid the car of the 'staged' clutch pedal feel. I really disliked the feel of the pedal and much prefer the linear pedal travel.
JUIC3D is offline  
Old 02-13-2012, 03:54 PM
  #46  
Neumonic2002
CF Senior Member
 
Neumonic2002's Avatar
 
Member Since: Oct 2004
Location: STL MO
Posts: 1,788
Thanked 24 Times in 22 Posts
St. Jude Donor '09-'10
Default

Congrats Joe!! Appreciate the video as well
Neumonic2002 is offline  
Old 02-13-2012, 04:27 PM
  #47  
firefighter813x
CF Senior Member
 
firefighter813x's Avatar
 
Member Since: Dec 2010
Location: Charleston SC
Posts: 1,042
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Sick run! Congrats.
firefighter813x is offline  
Old 02-13-2012, 04:58 PM
  #48  
Joe_G
Tech Contributor
Support Corvetteforum!
Thread Starter
 
Joe_G's Avatar
 
Member Since: Jul 2002
Location: Ft. Lauderdale, FL
Posts: 14,903
Thanked 216 Times in 184 Posts
St. Jude Donor '08
Default

Originally Posted by Justinjor View Post
It's interesting you say that Joe--as I've had my car bog multiple times and I still get high 1.5 60fts. If I want a low 1.5, I have to keep the rpms up but these Mickeys really stick and cause my rpms to bog down to 3500 on a few of my passes.

You say you only have 414tq though? I thought you made more for some reason. Perhaps its the additional torque that lets me "recover" from the bogged launch?
I think that's what it is. Remember I've only got 472/414 to your what, 494/445? That makes a big difference.

What's odd is we're both running 128. I compared our two best slips last night, I 60'd you by .06 but you et'd me by .08. It's all in the 1/8, your car pulls mine in the 1/8, I have 4 shifts in the 1/8 vs your 2.



Originally Posted by LEAVINU View Post
That's in street trim though right? Surely you're not pushing 3200lbs with the drag pack and no passenger seat.
Oh yes. I'm a convertible remember, I think it weighs 40 lbs more or so from the factory.

Here's my car nearly empty of fuel and nothing in the cubbies. Yesterday I had 1/2 tank of fuel and my usual assortment in the cubbies - 4 way tire iron, patch kit, small compressor, pliers, screwdriver to take out the clutch spring (Justin I forgot I had that in there when you were up at the track, I really do carry such a screwdriver!), etc.



One time another evening when I weighed the car with drag pack, seat out, etc. but including my assortment of accouterments and 1/4 tank of fuel it was 3195. I didn't snap a pic.
Joe_G is offline  
Old 02-13-2012, 05:03 PM
  #49  
JUIC3D
CF Senior Member
 
JUIC3D's Avatar
 
Member Since: May 2011
Location: Tampa FL (formerly Justinjor)
Posts: 5,025
Thanks: 0
Thanked 5 Times in 5 Posts
Tech Contributor
St. Jude Donor '11-'12-'13-'14
Default

The only other difference in our cars are the gears, right Joe? I make a hair more power, and you have a better gear for the 1/4 mile. My mph is a little higher in the 1/8 than yours, but you obviously come on strong by the big end. I'd love to race heads up one day-talk about a drivers race!

Oh, and at you having that screwdriver.
JUIC3D is offline  
Old 02-13-2012, 05:08 PM
  #50  
Joe_G
Tech Contributor
Support Corvetteforum!
Thread Starter
 
Joe_G's Avatar
 
Member Since: Jul 2002
Location: Ft. Lauderdale, FL
Posts: 14,903
Thanked 216 Times in 184 Posts
St. Jude Donor '08
Default

Originally Posted by Justinjor View Post
The only other difference in our cars are the gears, right Joe? I make a hair more power, and you have a better gear for the 1/4 mile. My mph is a little higher in the 1/8 than yours, but you obviously come on strong by the big end. I'd love to race heads up one day-talk about a drivers race!

Oh, and at you having that screwdriver.
Because of my shift to 4th before the 1/8, I get 30 mph in the big end to your 26...but you get 102 in the 1/8 to my 98 so there's where that 4 mph is. The last 660 is exactly 1.563 seconds in both of our cars.

It would be a great race. I think you have the edge in power but I've got a slight edge in experience.
Joe_G is offline  
Old 02-13-2012, 05:10 PM
  #51  
JUIC3D
CF Senior Member
 
JUIC3D's Avatar
 
Member Since: May 2011
Location: Tampa FL (formerly Justinjor)
Posts: 5,025
Thanks: 0
Thanked 5 Times in 5 Posts
Tech Contributor
St. Jude Donor '11-'12-'13-'14
Default

That is pretty interesting actually. You are/were my Mr. Miyagi and I learned from your teaching and we run identical times? Awesome
JUIC3D is offline  
Old 02-13-2012, 05:13 PM
  #52  
Joe_G
Tech Contributor
Support Corvetteforum!
Thread Starter
 
Joe_G's Avatar
 
Member Since: Jul 2002
Location: Ft. Lauderdale, FL
Posts: 14,903
Thanked 216 Times in 184 Posts
St. Jude Donor '08
Default

Originally Posted by Justinjor View Post
That is pretty interesting actually. You are/were my Mr. Miyagi and I learned from your teaching and we run identical times? Awesome
The mark of a good teacher is that the student surpasses the teacher Grasshopper...lol

Frankly, you have REALLY learned to drive that car and that's all you - you listened to a few tips and ran with it. Not many can get a 1.50 with a stock clutch.
Joe_G is offline  
Old 02-13-2012, 05:20 PM
  #53  
JUIC3D
CF Senior Member
 
JUIC3D's Avatar
 
Member Since: May 2011
Location: Tampa FL (formerly Justinjor)
Posts: 5,025
Thanks: 0
Thanked 5 Times in 5 Posts
Tech Contributor
St. Jude Donor '11-'12-'13-'14
Default

I had a good instructor.

I only need another ~.1 to take the top spot for LS3 internal modification and all the guys ahead of me have way more mods than I do. I just need a nice cool day
JUIC3D is offline  
Old 02-13-2012, 05:38 PM
  #54  
Joe_G
Tech Contributor
Support Corvetteforum!
Thread Starter
 
Joe_G's Avatar
 
Member Since: Jul 2002
Location: Ft. Lauderdale, FL
Posts: 14,903
Thanked 216 Times in 184 Posts
St. Jude Donor '08
Default

Originally Posted by Justinjor View Post
I had a good instructor.

I only need another ~.1 to take the top spot for LS3 internal modification and all the guys ahead of me have way more mods than I do. I just need a nice cool day
Yes you do. You've come a long way in a short period of time. One cool day with good track prep and you'd have it. Sorry I didn't think to call you yesterday, you're a little far, but man, it was wide open track and negative DA in the sunshine all day. That's about as rare as hen's teeth here!
Joe_G is offline  
Old 02-13-2012, 05:39 PM
  #55  
PRE-Z06
CF Senior Member
 
PRE-Z06's Avatar
 
Member Since: Dec 2006
Location: Fort Worth, Texas
Posts: 6,759
Thanked 36 Times in 31 Posts
Default

From my experience of swapping from 3.42 to 4.10 gears at my lesser power levels it was worth ~13/7
http://forums.corvetteforum.com/perf...o-results.html
Though the gears are actually worth 2-3 tenths ET, which fwiw turbovic has a non-z51 trans that held him to a 1.61 60'
PRE-Z06 is offline  
Old 02-13-2012, 05:44 PM
  #56  
Joe_G
Tech Contributor
Support Corvetteforum!
Thread Starter
 
Joe_G's Avatar
 
Member Since: Jul 2002
Location: Ft. Lauderdale, FL
Posts: 14,903
Thanked 216 Times in 184 Posts
St. Jude Donor '08
Default

Originally Posted by PRE-Z06 View Post
From my experience of swapping from 3.42 to 4.10 gears at my lesser power levels it was worth ~13/7
http://forums.corvetteforum.com/perf...o-results.html
Though the gears are actually worth 2-3 tenths ET, which fwiw turbovic has a non-z51 trans that held him to a 1.61 60'
That's true I forgot that 4.10 gears reduce dyno results but they do. I found a great explanation of why and posted it years ago.

Gears make it a lot easier to launch truth be known. I found a difference even between 3.90's an 4.10's. But 4.10's with H/C make it a lousy 1/8 mile car due to the extra shift. That was my first "6" second 1/8.
Joe_G is offline  
Old 02-13-2012, 05:44 PM
  #57  
JUIC3D
CF Senior Member
 
JUIC3D's Avatar
 
Member Since: May 2011
Location: Tampa FL (formerly Justinjor)
Posts: 5,025
Thanks: 0
Thanked 5 Times in 5 Posts
Tech Contributor
St. Jude Donor '11-'12-'13-'14
Default

Originally Posted by Joe_G View Post
Yes you do. You've come a long way in a short period of time. One cool day with good track prep and you'd have it. Sorry I didn't think to call you yesterday, you're a little far, but man, it was wide open track and negative DA in the sunshine all day. That's about as rare as hen's teeth here!
I might have made the trip. I just installed the battery and would have liked to try it out. My C5 brackets should be here tomorrow and that should allow another ~17lbs to come off the front end. If the weather is decent, I'll be going to bmp Thursday night.

Last edited by JUIC3D; 02-13-2012 at 05:59 PM.
JUIC3D is offline  
Old 02-13-2012, 11:56 PM
  #58  
ctusser
CF Senior Member
 
ctusser's Avatar
 
Member Since: Dec 2006
Location: Woodinville WA
Posts: 2,186
Thanks: 0
Thanked 0 Times in 0 Posts
Default

That added nothing to the thread.... This isn't OT

Last edited by johnodrake; 02-17-2012 at 05:36 PM. Reason: Unhelpful post
ctusser is offline  
Old 02-14-2012, 07:34 AM
  #59  
sebaj
CF Senior Member
 
sebaj's Avatar
 
Member Since: Apr 2007
Location: Budapest
Posts: 105
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Congrats Joe! Great run!
sebaj is offline  
Old 02-14-2012, 05:52 PM
  #60  
Kerrdogg
CF Senior Member
 
Member Since: Jul 2011
Location: Boca ARton FL
Posts: 515
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Originally Posted by Joe_G View Post
Yes you do. You've come a long way in a short period of time. One cool day with good track prep and you'd have it. Sorry I didn't think to call you yesterday, you're a little far, but man, it was wide open track and negative DA in the sunshine all day. That's about as rare as hen's teeth here!
Crap, figures, I even woke up early but had lotsa paper work waiting for me at the office...........

Congrats
Kerrdogg is offline  

Thread Tools
Search this Thread
Quick Reply: New PB - [email protected] 1.44 60 foot


Sponsored Ads
Vendor Directory

Contact Us - About Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: