|
Register | Album Gallery | Thread Gallery | FAQ | Community | Calendar | Become a Paid Member | Today's Posts | Search |
|
Thread Tools | Display Modes |
#11
|
||||
|
||||
Is the measly cost savings reeeallllyyy worth risking your engine over?
I wouldn't run a cast core roller even at gunpoint. I'd run a flat tappet first, by a long shot. When it comes to a roller, in my book: Billet core, iron gear pressed on, slide it in, measure & degree it and rock & roll. Just my $0.02 worth. |
#12
|
||||
|
||||
Quote:
I couldn't of said it better! |
The Following User Says Thank You to KenMaisano For This Useful Post: | ||
VintageMusclecar (08-29-2022) |
#13
|
|||
|
|||
You guys worry too much.
Engine builders that do this everyday don't have an issue with SADI cores in street-type applications. Much better deal than worrying about bronze tip FP pushrods, etc. There are millions of SADI hydraulic rollers in service without issue. Not suitable for big lift and high spring loads, but fine for the average mild street cam. The late Joe Sherman: Quote:
Quote:
Another good one.... http://speedtalk.com/forum/viewtopic.php?f=1&t=30456 No issues with my Howards SBC SADI cam, but I am only running a 300 lb over the nose beehive spring and 1.5 rockers. If I were running .650" lift and 450 lb over the nose, I probably wouldn't want a cast core. Bottom line: SADI is fine for the intended application. |
#14
|
|||
|
|||
So, how much price difference are we talking about?
__________________
Don't believe everything you read on the internet ... Ben Franklin |
#15
|
||||
|
||||
About $100 - $120 on the cam core upgrade to billet stock. Another variable cost is the distributor gear upgrade to whichever version you prefer? Some offer the press on gear option at $75 additional, others more $, and some do not even offer them at all. Then there's the lifter options as most cam manufacturers will spec their premium roller lifters to match the cam core and that can add significant cost atop the camshaft upgrade?
One last thing to consider is the delay in lead time for having a stock grind cut on billet stock? If a given street grind is on the shelf in a cast hydraulic roller and you need it on billet, be prepared for delays to have it queued in for a custom grind. I've been through all of this with Crower, and Lunati before and the worst possible time to ask for this is in the off season while all the racers are building new motors. Myself, I'm all for billet when it comes to solid roller grinds, high spring rates or high lift/duration grinds, but for street grinds under 575" lift I still think the cast core on a roller setup works fine. A good set of mid grade roller lifters and spring rates under #375 and I'm totally comfortable. Just an opinion but it's as much about break in and lubricity as it is about core hardness right? Gotta think that a lot of failures on cams is due to lifter selection, valve train geometry, and setup by the end user me thinks.
__________________
I like solid lifter cars, big cams and cars w/ 3 pedals in them. Last edited by NorCam; 02-27-2018 at 11:43 PM. |
The Following User Says Thank You to NorCam For This Useful Post: | ||
HawkX66 (02-28-2018) |
#16
|
|||
|
|||
Wow -- such a division ...
__________________
You've never lived until you've almost died -- for those who fight for it, life has a flavor the protected will never know! |
#17
|
||||
|
||||
lmao...been there done that
In the past 12 months I've ordered a Crower Hydraulic Roller, a Comp Solid Flat Tappet, a Lunati Solid Roller, and this current build is a Crower Solid Flat Tappet. Got the full gambit and looked at a lot of grinds before settling on these 4. Heard every sales pitch, had a lot of advice and learned a lot about cams.
__________________
I like solid lifter cars, big cams and cars w/ 3 pedals in them. Last edited by NorCam; 02-28-2018 at 01:26 AM. |
#18
|
||||
|
||||
A roller camshaft puts a lot more side load on the camshaft flanks and lifter bores than most realize.
|
The Following User Says Thank You to KenMaisano For This Useful Post: | ||
NorCam (02-28-2018) |
#19
|
||||
|
||||
You know what guys...... this is why I tell Kenny, the only kind of cam I want him using in my motors is Carbon Fiber ...... SCIENCE 🤯😛🤣😱😋😝
__________________
1968 1/2 Cougar 428 R Code, Cobra Jet, 4 SPD, Red Interior in restoration at MASCAR to be unveiled by Kevin Marti at the MCACN 2020 1970 Top Secret Very Special Muscle Car in restoration by MASCAR to be unveiled at MCACN 2020 |
|
|