AJ/FormS
68 Formua-S fastback clone 367/A833/GVod/3.55s
- Joined
- Jan 19, 2014
- Messages
- 24,937
- Reaction score
- 12,287
Brasil
If you are looking to kill off some Dcr, the roller cam is the wrong way to go in a daily driver, plus itsa lotta money for a DD. The lobes on roller to a similarly sized flat-tappet hydraulic @.050, will be have much shorter ramps, which will close the intake considerably earlier.The earlier closing intake will trap the charge closer to the bottom of the cylinder, making a higher Dcr.
If you are gonna put that engine back together with the same parts as before, you are gonna need a VERY BIG rollercam to kill Dcr, but it won't do a thing for your high Scr.
From the earlier thread on this subject, I assume you already know this, and so this is just a reminder to measure up your parts, and calculate your TRUE compression ratio, before getting started.
Oh yes and I do remember that you mentioned that your gas has a higher octane rating than the stuff we call pumpgas over here.
So, just a friendly reminder.
If you are looking to kill off some Dcr, the roller cam is the wrong way to go in a daily driver, plus itsa lotta money for a DD. The lobes on roller to a similarly sized flat-tappet hydraulic @.050, will be have much shorter ramps, which will close the intake considerably earlier.The earlier closing intake will trap the charge closer to the bottom of the cylinder, making a higher Dcr.
If you are gonna put that engine back together with the same parts as before, you are gonna need a VERY BIG rollercam to kill Dcr, but it won't do a thing for your high Scr.
From the earlier thread on this subject, I assume you already know this, and so this is just a reminder to measure up your parts, and calculate your TRUE compression ratio, before getting started.
Oh yes and I do remember that you mentioned that your gas has a higher octane rating than the stuff we call pumpgas over here.
So, just a friendly reminder.
