Drivability to tuner after major engine changes?
Thread Starter
I'm Batman..
Joined: Apr 2014
Posts: 6,142
Likes: 921
From: Lehigh Acres FL
Tech Contributor
Drivability to tuner after major engine changes?
So I'm in the midst of a full rebuild and when all is said and done things will be quite different. Currently have an S-Trim blower with dual meth and long tubes and am tuned for that setup.
After the rebuild I will have:
- E85 sensor will be installed
- forged pistons with same compression
(These two should not have any affect on tune/drivability)
Will also have
- full Z06 fuel system hardware (rails/HPFP/injectors)
- full stage 2 cam with 32% fuel lobe (DoD deleted)
I know the Z06 injectors require a tune due to the changed flow rate and the cam surely will as well. These I know will greatly effect drivability. So, will the car run fine enough to drive it two hours to a tuner? Or will I need to get it towed there?
Paging Dr Higgs.. LOL
Ant
After the rebuild I will have:
- E85 sensor will be installed
- forged pistons with same compression
(These two should not have any affect on tune/drivability)
Will also have
- full Z06 fuel system hardware (rails/HPFP/injectors)
- full stage 2 cam with 32% fuel lobe (DoD deleted)
I know the Z06 injectors require a tune due to the changed flow rate and the cam surely will as well. These I know will greatly effect drivability. So, will the car run fine enough to drive it two hours to a tuner? Or will I need to get it towed there?
Paging Dr Higgs.. LOL
Ant
Le Mans Master
Joined: Jul 2015
Posts: 6,223
Likes: 1,700
From: Northern California
St. Jude Donor '15
Can you ask your tuner? Are you going to dyno it? If so I'm curious to what your numbers are, if not I look forward to your impressions after you get it dialed in.
Thread Starter
I'm Batman..
Joined: Apr 2014
Posts: 6,142
Likes: 921
From: Lehigh Acres FL
Tech Contributor
I was going to call them about it this week. It's going to be a new tuner for me, and yes will be dyno tuned. Likely would be Howard Tanner at Redline over in Pompano, FL area. Current numbers are 640hp/620tq. Afterwards prolly close to 800.
Thread Starter
I'm Batman..
Joined: Apr 2014
Posts: 6,142
Likes: 921
From: Lehigh Acres FL
Tech Contributor
Definitely would only be cruising over. Take offs would be VERY gentle. I just wasn't sure if the injector timing/pulse or the came would be ok or if it would be so far off it would cause any damage.
Supporting Vendor
Joined: Feb 2009
Posts: 4,420
Likes: 1,428
From: Mesa Az
i wouldn't drive it at all.
__________________
Cordes Performance Racing aka "CPR"
Owner of AZ's premier LSX/LTX motorsports shop
http://cordesperformanceracing.com/
www.facebook.com/cordesperformanceracing.com
joe@cordesperformanceracing.com
480-359-5914
Cordes Performance Racing aka "CPR"
Owner of AZ's premier LSX/LTX motorsports shop
http://cordesperformanceracing.com/
www.facebook.com/cordesperformanceracing.com
joe@cordesperformanceracing.com
480-359-5914
Thread Starter
I'm Batman..
Joined: Apr 2014
Posts: 6,142
Likes: 921
From: Lehigh Acres FL
Tech Contributor
Well crap. Not what I was hoping to hear. I also wonder about engine/ring break in procedure as well. If you can't drive the car until you have it tuned, but you're supposed to put 500 miles or so on the motor before romping on it to allow the rings to properly seat, what do you do? Lol
Race Director
Joined: Jul 2007
Posts: 10,961
Likes: 2,643
From: Texas Hill Country
Well crap. Not what I was hoping to hear. I also wonder about engine/ring break in procedure as well. If you can't drive the car until you have it tuned, but you're supposed to put 500 miles or so on the motor before romping on it to allow the rings to properly seat, what do you do? Lol
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Supporting Vendor
Joined: Feb 2009
Posts: 4,420
Likes: 1,428
From: Mesa Az
Well crap. Not what I was hoping to hear. I also wonder about engine/ring break in procedure as well. If you can't drive the car until you have it tuned, but you're supposed to put 500 miles or so on the motor before romping on it to allow the rings to properly seat, what do you do? Lol
Breaking in rings is silly thing. They seat almost instantly. We have a base tune in go drive it get it up to temp put some load on it. Change out the break in oil than put it on the dyno and let it eat! Have had zero failures by doing this that was ring or bearing related. 99% of engine failures we see are the setup was pushed way past the acceptable limits or the owner did something really stupid.
Thread Starter
I'm Batman..
Joined: Apr 2014
Posts: 6,142
Likes: 921
From: Lehigh Acres FL
Tech Contributor
Breaking in rings is silly thing. They seat almost instantly. We have a base tune in go drive it get it up to temp put some load on it. Change out the break in oil than put it on the dyno and let it eat! Have had zero failures by doing this that was ring or bearing related. 99% of engine failures we see are the setup was pushed way past the acceptable limits or the owner did something really stupid.
Drifting
Joined: Jul 2005
Posts: 1,646
Likes: 188
Have Higgs send ya a tune and it should be close enough... still wouldn't really romp on it, just stay low throttle keeping it in closed loop control so fueling is taken care of... plus with that cam it will need some idle rpm and injector/hpfp changes, etc