Most power on stock ring gaps?
Thread Starter
Restricted User
Joined: Mar 2014
Posts: 7,192
Likes: 109
From: Ohio
Most power on stock ring gaps? My L33 is already in the car and together. I didn't want to pull the heads and installed the engine as-is. I have a BW S476R with an 83mm turbine on the way. Goal is ~750-800whp later on down the road.
The engine has 70k miles and I didn't open up the ring gaps, so I would assume they are pretty tight. I'll be running 93 with water and meth. I may eventually swap in larger injectors and run E85 since the closest gas station has it for cheaper the regular unleaded.
So how much power have some of you made on stock ring gaps? I've made lots of power on other motors with ring gaps opened to .024-.028 but never contemplated how tight the stock rings are or how much they're going to expand. I know a couple people have had luck with the 150k+ mile motors but the ring gaps are probably .005-.010 more open than mine depending on the mileage. I'm hoping with the water injecton I can keep the rings cool, and I'm running a 4-corner steam vent to help keep heat down.
Success stories, horror stories?
The engine has 70k miles and I didn't open up the ring gaps, so I would assume they are pretty tight. I'll be running 93 with water and meth. I may eventually swap in larger injectors and run E85 since the closest gas station has it for cheaper the regular unleaded.
So how much power have some of you made on stock ring gaps? I've made lots of power on other motors with ring gaps opened to .024-.028 but never contemplated how tight the stock rings are or how much they're going to expand. I know a couple people have had luck with the 150k+ mile motors but the ring gaps are probably .005-.010 more open than mine depending on the mileage. I'm hoping with the water injecton I can keep the rings cool, and I'm running a 4-corner steam vent to help keep heat down.
Success stories, horror stories?
9 Second Truck Club
iTrader: (17)
Joined: Sep 2006
Posts: 3,672
Likes: 9
From: Colorado Springs, Co/ Central, Ca
My truck has stock gaps and approx 120k miles. It has seen some pretty big power. I don't dyno it often but I know it's been flogged with 1000+ HP tuneups
Thread Starter
Restricted User
Joined: Mar 2014
Posts: 7,192
Likes: 109
From: Ohio
Running gas on the truck or E85? E85 is much nicer to stock ring gaps since its cooler and doesn't cause them to expand as much. I'm hoping water/meth will save my rings. Maybe I'll keep the pump gas tune down to around 600whp and then go bigger with race gas, since race gas burns slightly slower.
Was going to say Joe, it will depend on how that engine was treated in those 70K miles.
My L33 top ring was at .019 so I opened them to .025". 2nd rings were ,028". Left them alone. 136k miles. Not the best maintenance on it. It was really brown inside. Glad I took it all apart.
The LS1 example above is interesting, but not sure its real relevant. LS1's bust top ring lands with no boost.
Ron
My L33 top ring was at .019 so I opened them to .025". 2nd rings were ,028". Left them alone. 136k miles. Not the best maintenance on it. It was really brown inside. Glad I took it all apart.
The LS1 example above is interesting, but not sure its real relevant. LS1's bust top ring lands with no boost.
Ron
My car has seen quite a few long highway pulls (40-140+) with over 750whp. Stock bottom ls1 that has never been out of the car. Its the E85 keeping it alive, thats for sure. Im pretty sure it was a nitrous car before i got it though so maybe that helped loosen things up, who knows! Only 55k on it
9 Second Truck Club
iTrader: (17)
Joined: Sep 2006
Posts: 3,672
Likes: 9
From: Colorado Springs, Co/ Central, Ca
Running gas on the truck or E85? E85 is much nicer to stock ring gaps since its cooler and doesn't cause them to expand as much. I'm hoping water/meth will save my rings. Maybe I'll keep the pump gas tune down to around 600whp and then go bigger with race gas, since race gas burns slightly slower.
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
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
