C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Thanks ski_dwn_it

Thread Tools
 
Search this Thread
 
Old Mar 9, 2006 | 06:43 PM
  #1  
Pete K's Avatar
Pete K
Thread Starter
Race Director
20 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Feb 2004
Posts: 12,517
Likes: 19
Default Thanks ski_dwn_it

I have been a huge pain in the azz and I appreciate the great service. Chip arrived today and plan to get track data as soon as it opens. If anyone remembers, Jesse was kind enough to do a free burn for me after my lovely bride tossed mine in the trash. Before installing it in the new 406, it blew up due to faulty machine work. Did not have a chance to use the chip. Then i rebuilt the 383 and he burned it again New 383 blew up, again due to faulty machine work. I rebuilt the 406 and, you guessed it, lost it on the dyno. After sweepin up the garage floor, I cobbled together my best pieces. I did not have the nerve to ask for another burn. He insisted I send it. Thank you!
Reply
Old Mar 9, 2006 | 06:55 PM
  #2  
blown87's Avatar
blown87
Race Director
 
Joined: Sep 2005
Posts: 13,269
Likes: 0
From: Sharpsburg Georgia
GA Events Coordinator
Default

Originally Posted by Pete K
I have been a huge pain in the azz and I appreciate the great service. Chip arrived today and plan to get track data as soon as it opens. If anyone remembers, Jesse was kind enough to do a free burn for me after my lovely bride tossed mine in the trash. Before installing it in the new 406, it blew up due to faulty machine work. Did not have a chance to use the chip. Then i rebuilt the 383 and he burned it again New 383 blew up, again due to faulty machine work. I rebuilt the 406 and, you guessed it, lost it on the dyno. After sweepin up the garage floor, I cobbled together my best pieces. I did not have the nerve to ask for another burn. He insisted I send it. Thank you!
Sounds like he is a stand up guy, and you need a new machine shop, man i would be hot.
Reply
Old Mar 9, 2006 | 06:57 PM
  #3  
Pete K's Avatar
Pete K
Thread Starter
Race Director
20 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Feb 2004
Posts: 12,517
Likes: 19
Default

Originally Posted by blown87
Sounds like he is a stand up guy, and you need a new machine shop, man i would be hot.
I happened last summer. Water over the dam at this point. I am out of that shop. Did not truly figure it out till after the fact.
Reply
Old Mar 9, 2006 | 07:01 PM
  #4  
Corvette0096's Avatar
Corvette0096
Race Director
20 Year Member
Liked
 
Joined: Aug 2000
Posts: 11,506
Likes: 4
From: Vancouver,Wa.
Default

I see why after all the blown motors why she threw the chip out. She was saving you money and heart acke.
Reply
Old Mar 9, 2006 | 07:05 PM
  #5  
Pete K's Avatar
Pete K
Thread Starter
Race Director
20 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Feb 2004
Posts: 12,517
Likes: 19
Default

Nah, she threw it out before the problems. I should have seen it as a sign
Reply
Old Mar 9, 2006 | 07:44 PM
  #6  
tobijohn's Avatar
tobijohn
Bench Racer
Supporting Member
20 Year Member
St. Jude 10 Year Donor
Liked
Loved
 
Joined: Feb 2003
Posts: 4,201
Likes: 15
From: Palm Beach Gardens FL
St. Jude '03 thru 14,'25
Default

Just curious, did you ever find out exactly what the machine shop was doing wrong? TIA...
Reply
Old Mar 9, 2006 | 08:12 PM
  #7  
Pete K's Avatar
Pete K
Thread Starter
Race Director
20 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Feb 2004
Posts: 12,517
Likes: 19
Default

It did figure it out. The rod bolts and main studs were installed, torqued and machine work was done. The problem was the threads were not rolled in. When you torque the rod bolt down with fresh new threads, there is excessive friction. After cycling them 5 times, the threads "roll in". Then when they are retorque to the same spec, they clamp harder because you are effectively overtorquing them, by comparison to the initial torque. This makes the rod end or main caps smaller. Always roll in new threads at least 5 times. This includes head bolts or studs. Learned an expensive lesson.
Reply
Old Mar 9, 2006 | 11:52 PM
  #8  
sami85L98's Avatar
sami85L98
Le Mans Master
 
Joined: Apr 2005
Posts: 8,077
Likes: 4
From: Scarborough ONTARIO
Default

Originally Posted by Pete K
It did figure it out. The rod bolts and main studs were installed, torqued and machine work was done. The problem was the threads were not rolled in. When you torque the rod bolt down with fresh new threads, there is excessive friction. After cycling them 5 times, the threads "roll in". Then when they are retorque to the same spec, they clamp harder because you are effectively overtorquing them, by comparison to the initial torque. This makes the rod end or main caps smaller. Always roll in new threads at least 5 times. This includes head bolts or studs. Learned an expensive lesson.
Congrats for a free chip from ski, now my 383 is almost complete and soon will be at ur door, little scare of this darn thing, but i know its going in good hands.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-1

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-2

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
story-3

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-4

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-5

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-6

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
story-7

10 Revolutionary 'Corvette Firsts' Most People Don't Know

 Joe Kucinski
story-8

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
story-9

2027 Corvette vs The World: Every C8 vs Its Closest Competitor

 Joe Kucinski
Old Mar 9, 2006 | 11:59 PM
  #9  
VtVette's Avatar
VtVette
Melting Slicks
20 Year Member
 
Joined: Mar 1999
Posts: 2,830
Likes: 20
From: Las Vegas Nevada
Default

My chip is sitting in a box right now ready to go with his address on it. I'm sending it out next week. I've read NOTHING but VERY, VERY good things about Jesse here on the forum (both his conduct AND his burns) and he's been kind enough to answer several of my question in PM.

I'm more than happy to give a stand up guy like that my business
Reply
Old Mar 10, 2006 | 07:16 AM
  #10  
Pete K's Avatar
Pete K
Thread Starter
Race Director
20 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Feb 2004
Posts: 12,517
Likes: 19
Default

Originally Posted by sami85L98
Congrats for a free chip from ski, now my 383 is almost complete and soon will be at ur door, little scare of this darn thing, but i know its going in good hands.
No worries sami. We will screw it together, sprinkle holy water on it, cross the fingers and beat the hell out of it. It will be fine
Reply
Old Mar 10, 2006 | 07:32 AM
  #11  
Corvette Kid's Avatar
Corvette Kid
Large Impressive Member
Supporting Lifetime Gold
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2003
Posts: 65,811
Likes: 71
From: Good health is merely the slowest possible rate at which one can die
St. Jude Donor '04-'05-'06-'07
Default

That was nice of him, I'm sure he felt as bad for your series of misfortunes as I and everyones do, hearing of it. Glad to hear you've figured it out and it's behind you now. And to Ski...
Reply
Old Mar 10, 2006 | 07:58 AM
  #12  
mseven's Avatar
mseven
Le Mans Master
 
Joined: Feb 2005
Posts: 5,146
Likes: 3
From: The Motor City
Default

Pete, You have had some terrible experiences over the last year. I don't know how you manage to stay above it all. I admire your determination and additude, and hope this is your year. You certainly deserve a run of good luck this time around.
Jesse, is a good guy and has fielded questions from me on several occasions and was always very helpfull Thanks. I am sure he understood what you have been going through,

Last edited by mseven; Mar 10, 2006 at 08:00 AM.
Reply
Old Mar 10, 2006 | 09:49 AM
  #13  
Roocars's Avatar
Roocars
Instructor
15 Year Member
 
Joined: Dec 2004
Posts: 135
Likes: 0
From: Pickering Ontario
Default

Yes I had a good tune by Jessy on my 383 but over the winter I went to a superram and a FAST system so I can play my self. It was nice to have the help to get started.
Take Care
Roocars
Reply
Old Mar 10, 2006 | 12:46 PM
  #14  
tjwong's Avatar
tjwong
Le Mans Master
Supporting Lifetime Gold
20 Year Member
 
Joined: Jan 2003
Posts: 8,596
Likes: 19
From: Portland Oregon
Default

Originally Posted by Pete K
It did figure it out. The rod bolts and main studs were installed, torqued and machine work was done. The problem was the threads were not rolled in. When you torque the rod bolt down with fresh new threads, there is excessive friction. After cycling them 5 times, the threads "roll in". Then when they are retorque to the same spec, they clamp harder because you are effectively overtorquing them, by comparison to the initial torque. This makes the rod end or main caps smaller. Always roll in new threads at least 5 times. This includes head bolts or studs. Learned an expensive lesson.

Hmm I haven't heard of that phenomenah. What brand rod, and main cap bolts did you use? I use ARP almost exclusively and have never had an issue. I use a stretch gauge to tighten the rod bolts or nuts down, as it is the most accurate way to tighten the fastener down. I have never had a failure of a fastener when torqued in that manner. Good luck on your new engine.
Reply
Old Mar 10, 2006 | 01:29 PM
  #15  
Pete K's Avatar
Pete K
Thread Starter
Race Director
20 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Feb 2004
Posts: 12,517
Likes: 19
Default

Originally Posted by tjwong
Hmm I haven't heard of that phenomenah. What brand rod, and main cap bolts did you use? I use ARP almost exclusively and have never had an issue. I use a stretch gauge to tighten the rod bolts or nuts down, as it is the most accurate way to tighten the fastener down. I have never had a failure of a fastener when torqued in that manner. Good luck on your new engine.
The rolling in was per arp. The stretch wiil change the 3rd or 4th time a brand new fastener is tightened. As the threads wear in to each other, friction is reduced. Then the finished id of the hole gets smaller as a result of the excessive stretch. My former machinest did not own a stretch guage. All good machine shops will(or should) cycle a brand new fastener 3x. Most will do 5x. Then machine the rod or main saddles. It took me a month trying to figure it out. My guy thought once torqued, machined and out the door was fine. He does not even use the arp lube. He uses 10 40 oil
For the record, if he used oil, lube, spit or whatever, and cycled the bolts 3x before machining, I would have been fine. Because it was a stroker, I had to mock up and disassemble a few times to check and fix minor clearance (block) issues. The final assemble made all of my finished bores .001 too small, consistantly.
Reply
Old Mar 10, 2006 | 06:27 PM
  #16  
pipe's Avatar
pipe
Drifting
20 Year Member
 
Joined: Jan 2003
Posts: 1,894
Likes: 3
From: Reading PA.
Default

Pete your scaring me about this bolt stretch and torque and everything My 383 is still on the engine stand waiting for the Heads to come back from the porter. I put a ton of money into this build and only bought the very best parts money could buy. If this thing blows up on me during fire up or soon after i'll commit suicide. Maybe I better go over that bottom end before it gets buttoned up Pipe
Reply
Old Mar 10, 2006 | 06:50 PM
  #17  
Pete K's Avatar
Pete K
Thread Starter
Race Director
20 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Feb 2004
Posts: 12,517
Likes: 19
Default

Originally Posted by pipe
Pete your scaring me about this bolt stretch and torque and everything My 383 is still on the engine stand waiting for the Heads to come back from the porter. I put a ton of money into this build and only bought the very best parts money could buy. If this thing blows up on me during fire up or soon after i'll commit suicide. Maybe I better go over that bottom end before it gets buttoned up Pipe
If the machinist did his job, it "should" be fine. Ask him how many times he cycled the bolts before machining. Also ask him how he torqued them. If he used, for example, 10w-40 oil and torqued to 50 ft lbs, you want to duplicate it. If he did not cycle, or roll in the threads, check the tolerences with a bore guage. If they are out of round and smaller than they should be, he did not roll them in. Remember, this only applies to brand new bolts.
Reply
Old Mar 10, 2006 | 07:22 PM
  #18  
ski_dwn_it's Avatar
0ski_dwn_it
Former Vendor
 
Joined: Jun 2001
Posts: 7,204
Likes: 6
From: St Marys PA
Default

Pete/Rest of you guys....

THanks for the props. I have been a long time supporter of the forum here and always try to offer the best "Real Life" advice to you guys as possible. I have learned a TON through trial and error and openly try to share these experiences as much as possible.

Recently I have been working with Exotic Muscle on a joint venture and in addition recently became a supporting vendor here on the forum. I have had met many very supportive people through the years here and hope to continue contributing in a meaningful way through both my experiences and also through offering these tunes to people.

Most all the people I have done tunes for have become what I call very good friends of mine, Pete is just one example of this.

I look forward to working with many others here on the forum and working with others to achieve their goals.

Pete, you have had some pretty crappy luck over the last year, but we had a blast at the track last season. There should be another one of them coming up real soon; so get your stuff together and get ready to tear it up!

Last edited by ski_dwn_it; Mar 10, 2006 at 07:33 PM.
Reply

Get notified of new replies

To Thanks ski_dwn_it





All times are GMT -4. The time now is 03:38 PM.

story-0
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-1
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-2
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-3
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-4
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-5
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-6
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-7
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-8
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-9
2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-24 16:12:42


VIEW MORE