Why Bore and Stroke Don't Matter! | Not Rod Science Ep. 1
Вставка
- Опубліковано 5 чер 2023
- Ryan explains using math a science exactly why swapping bore and stroke make no difference as long as the total cubic inches remain the same.
Store - www.notrodshop.com/shop
www.NotRodShop.com
Twitter - / notrodshop
Instagram - / notrodshop - Авто та транспорт
You draw your 7's from the bottom up, but not your 3's. I think it stood out because i was anticipating what you were gonna write.
bore and stroke does matter as a function of airflow. your effective valve size is always limited by bore diameter
We'll probably do a follow-up on valve shrouding, valve angle, etc. The purpose of this film was to show that all else being equal displacement is displacement.
Good video, I’ll have to watch it again ‘cuz a all the cipherin’. Yeah, I’ve heard this and I’ll admit I was from the ‘long arm = torque!’ camp, probably because the big torquers in the muscle car era did have the longest strokes, for the most part.
A smaller bore vs stroke ratio makes the flame front more efficient going across the piston, it burns faster as it has less distance to travel.
Giving the engine less tendency to knock.
A larger bore vs stroke ratio takes the flame front longer to travel across the piston. Giving the engine a more natural tendency to knock.
My theory is a larger bore is always better for making power, a larger stroke is always better for fuel economy. ( Love this channel, Keep em coming guys).
A lot of variables are left out of your equation. Some have commented on. Im not taking the time to go into detail. But heres one- the average psi would be different in each of the engines due to many factors. Assuming both were built exactly alike orher than bore and stroke.
I agree🧐
I've been in some silly arguments about this, some guys always argue that the stroker motor is better, but my argument is that almost all the time people utilize better valvetrain components to realize the gain, minus the effort it takes to spin up the heavier or longer rods.
Basically true for the RPM ranges of a street motor. Friction does come into play on higher RPM engines.
Yeah from the small bit of knowledge i have in this topic is 2 engines with similar displacement they will make similar horsepower if identical besides bore and stroke. Valvetrain, head design, intake design etc make more of a difference than bore vs stroke for the most part. Bigger bore gives more options for chamber design but thats usually more for the higher end stuff.
Cool
Smaller bore wont house bigger valves..... head options become limited
Bore & stroke Absolutely matter when building horsepower. With that math you're showing, you can't take into effect. Valve shrouding which is a huge issue relevant to bore size. If you can't get a big enough valve in it to move the air that the engine needs due to the small bore then you ain't doing nothing.
This video, however was really well done and I enjoyed it!
We'll probably do a follow-up on valve shrouding, valve angle, etc. The purpose of this film was to show that all else being equal displacement is displacement.
@@NotRodShop I'm actually driving down the interstate right now, so I apologize for my atrocious spelling in that comment, but I think I've got it fixed. Speech to text got me. I also added to my comment that your video was very well done and that I enjoyed it because I didn't want you to think that I was trying to take anything away from you. I just think that a lot of people don't consider what I mentioned. You're much smarter than I am, I'm sure. So I wasn't trying to be a know-it-all. Looking forward to your next video!
@@Headsup9550 No worries friend. Thanks for watching the show!
@@NotRodShop For sure dude! I've been watching since you guys got the Nova ready to go to the track and took it with the slapper bars & the 3 speed!
well, you might use LS motors, but at least you got this right😆😜
WHERES THE NOVA!?
In the works.
@@NotRodShop good that was my favorite thing to watch lol I have a nova as well and they look a lot alike lol