Timing curve (Built motors)
9 Second Club
Joined: Nov 2003
Posts: 13,616
Likes: 185
From: Norn Iron
was just going to post up my table and saw it already here haha and suggest starting lower also and checking results, these motors start dropping off power long before they start having issues with knock and etc, theyll talk you just gotta not be greedy and listen.
usually good rule of thumb 0psi 22deg, 14psi 14deg, and then start moving around from there, every combo starts to vary at 14+ psi i would say.
usually good rule of thumb 0psi 22deg, 14psi 14deg, and then start moving around from there, every combo starts to vary at 14+ psi i would say.
Surely it'd make a lot more power in the high 20's ?
when your leaving at 5+psi on the brake I don't think timing matters at 100kpa. maybe on the street transitioning from vacuum to boost but at that weight and that much power all its going to do is just spin more!
9 Second Club
Joined: Nov 2003
Posts: 13,616
Likes: 185
From: Norn Iron
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
IMO you should just have a **** for timing with zero numbers involved. Start out "low", slowly "turn it up" until it stops making power. Aiming for a specific number is pointless.
My 10:1 5.3 ran on the ragged edge around 17* and 25lbs. After about 10-15 runs at this level it eventually pushed the HG. This was E85, intercooled, and water/meth inj. as well.
You'll probably end up with something like Matts pump gas table below. I'd still start out lower.
My 10:1 5.3 ran on the ragged edge around 17* and 25lbs. After about 10-15 runs at this level it eventually pushed the HG. This was E85, intercooled, and water/meth inj. as well.
You'll probably end up with something like Matts pump gas table below. I'd still start out lower.
Do you just want a copy of a turbo timing curve for a procharger: no
Do you wanna follow the same protocol in building your own timing map: yes