10308-1 spring question
10308-1 spring question I am running a cam that has .572 lift with 1.5 rockers, I am currently going to run them with 1.5s untill i can get 1.6 rockers.
I have a set of 10308-1 crane cams valve springs that i want to run but the max lift for them is .600 and with 1.6 rockers I will be running .610 lift, I know that I will be running these springs past their "MAX".
my rebuild is being done on a budget and the car account is almost empty (as always). Is it stupid of me to even think about running these springs .010 past their max?
cam is 242 242 572 572 112 solid roller cam and this car will not see high (6200+) rpm often at all
thanks in advance
I have a set of 10308-1 crane cams valve springs that i want to run but the max lift for them is .600 and with 1.6 rockers I will be running .610 lift, I know that I will be running these springs past their "MAX".
my rebuild is being done on a budget and the car account is almost empty (as always). Is it stupid of me to even think about running these springs .010 past their max?
cam is 242 242 572 572 112 solid roller cam and this car will not see high (6200+) rpm often at all
thanks in advance
according to the crane install pdf these are the specs for this spring
For mechanical street roller equipped engines
- Recom’d installed spring pressure and height (valve closed)-------------145 lbs.@ 1.812”
- Open checking pressure and height ---------------------------------------------426 lbs.@ 1.110”
- Maximum recommended valve lift and RPM ----------------------------------.600” - 7500 RPM
For mechanical street roller equipped engines
- Recom’d installed spring pressure and height (valve closed)-------------145 lbs.@ 1.812”
- Open checking pressure and height ---------------------------------------------426 lbs.@ 1.110”
- Maximum recommended valve lift and RPM ----------------------------------.600” - 7500 RPM
Ideally you want at least .030" between when a coil binds and the max lift of the camshaft. On a setup like yours you'd be foolish to take a chance with going past their maximum capability. I would look for a spring that supports .640" or better.
And explain to me this, what is the point of going solid roller if you aren't going to use the RPMs that cam needs?
And explain to me this, what is the point of going solid roller if you aren't going to use the RPMs that cam needs?
Ideally you want at least .030" between when a coil binds and the max lift of the camshaft. On a setup like yours you'd be foolish to take a chance with going past their maximum capability. I would look for a spring that supports .640" or better.
And explain to me this, what is the point of going solid roller if you aren't going to use the RPMs that cam needs?
And explain to me this, what is the point of going solid roller if you aren't going to use the RPMs that cam needs?
Yeah I didnt think It was a good idea, but figured I would throw it out there.
I went solid roller cause i got the cam and entire valvetrain setup (pushrods lifters guideplates roller rockers springs) for free from a friend. the cam will see high rpm occasionally.
This car will see the track occasionally as i can afford it, but mostly a street cruiser/weekend car. At the track it will see high rpms but mostly it will be used mildly.
Yeah I didnt think It was a good idea, but figured I would throw it out there.
I went solid roller cause i got the cam and entire valvetrain setup (pushrods lifters guideplates roller rockers springs) for free from a friend. the cam will see high rpm occasionally.
This car will see the track occasionally as i can afford it, but mostly a street cruiser/weekend car. At the track it will see high rpms but mostly it will be used mildly.
I went solid roller cause i got the cam and entire valvetrain setup (pushrods lifters guideplates roller rockers springs) for free from a friend. the cam will see high rpm occasionally.
This car will see the track occasionally as i can afford it, but mostly a street cruiser/weekend car. At the track it will see high rpms but mostly it will be used mildly.
Getting things from friends for free is nice and all, but if it doesn't suit what you needs why bother? I would have sold it all, gotten a far more mild hydraulic roller and THEN you could have (likely) used the 99893s.
JMHO...
Trending Topics
Save the $$$ leave the current springs and 1.5 rockers. That will help your budget, save the springs and I bet you won't notice the lose even at that track.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
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
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
Five Reasons the Camaro Was the Most Pivotal Player in the Pony Car Wars 2.0
Brett Foote
10 Reasons the LS7 Is GM's Most Extreme Naturally Aspirated V8 Engine Ever
Verdad Gallardo I plan on using the 1.5s for quite a while, probably a year at least. I will get new springs when i get new rockers.
so what do you guys think of these springs per this application, keeping the 1.5 ratio rockers that make the lift .572 .572, spring limit is .600
so what do you guys think of these springs per this application, keeping the 1.5 ratio rockers that make the lift .572 .572, spring limit is .600
cam card doesnt have spring suggestions on it
this is whats printed on the cam card
duration at .050 242 int 242 exh
lobe lift 381 int 381 exh
Lobe seperation 112
seat duration
at gross valve
lift 278 int 278 exh
valve lash hot 020 020
degree intake center lobe to 108 ATDC
Seat timing intake btdc 14.9 abdc 51.2
seat timing exhaust bbdc 59 atdc 7.4
can anyone figure out what my intake center line is from this info
this is whats printed on the cam card
duration at .050 242 int 242 exh
lobe lift 381 int 381 exh
Lobe seperation 112
seat duration
at gross valve
lift 278 int 278 exh
valve lash hot 020 020
degree intake center lobe to 108 ATDC
Seat timing intake btdc 14.9 abdc 51.2
seat timing exhaust bbdc 59 atdc 7.4
can anyone figure out what my intake center line is from this info
Last edited by jester1614; Apr 7, 2011 at 02:44 PM. Reason: more notes
