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Search found 2972 matches
- Sat Feb 27, 2021 6:53 pm
- Forum: Engine Tech
- Topic: Cam Duration: Adv. vs .050
- Replies: 2
- Views: 279
Re: Cam Duration: Adv. vs .050
Looking at these 2 lobes in average inch degrees. ► 0.050 /((288-236)/2) = 0.0019230769230769232 ► (0.347-0.050)/(236/2) = 0.0025169491525423729 ► 0.050/((274-224)/2) = 0.002 ► (.359-0.050)/(224/2) = 0.0027589285714285715 ► 0.0027589285714285715 / 0.0025169491525423729 = 1.0961399711399711 - From 0....
- Fri Feb 26, 2021 1:31 pm
- Forum: Engine Tech
- Topic: Dynamic compression calculator
- Replies: 27
- Views: 580
Re: Dynamic compression calculator
Using Bore = 4.04", Stroke = 3.75", Rod = 5.7" Using an engine with a SCR of 15:1, and a DCR of 11.38:1 I get an IVC of 70.55 ABDC and and a cranking compression of 324 psi ======== Using Bore = 4.04", Stroke = 3.75", Rod = 5.7" Using an engine with a SCR of 10.66:1, and a IVC of 70.55 ABDC I get a...
- Fri Feb 26, 2021 12:06 pm
- Forum: Engine Tech
- Topic: Dynamic compression calculator
- Replies: 27
- Views: 580
Re: Dynamic compression calculator
Using Bore = 4.04", Stroke = 3.75", Rod = 5.7" Using an engine with a SCR of 15:1, and a DCR of 11.38:1 I get an IVC of 70.55 ABDC and and a cranking compression of 324 psi ======== Using Bore = 4.04", Stroke = 3.75", Rod = 5.7" Using an engine with a SCR of 10.66:1, and a IVC of 70.55 ABDC I get a ...
- Fri Feb 26, 2021 10:49 am
- Forum: Engine Tech
- Topic: Dynamic compression calculator
- Replies: 27
- Views: 580
Re: Dynamic compression calculator
I come up with the same Total volume and CR. But the true CR is lower because I would also use the volume above the top ring. Let say the diameter above the top ring is 4.0" and the top ring is 0.125" down. that would give you another 0.517389 cc's for a Total Volume of 82.05572 cc's and a CR of 10....
- Thu Feb 25, 2021 8:39 pm
- Forum: Engine Tech
- Topic: Dynamic compression calculator
- Replies: 27
- Views: 580
Re: Dynamic compression calculator
Most DCR calculators ask for the CR (already having been calculated).
Stan
- Thu Feb 25, 2021 5:04 pm
- Forum: Engine Tech
- Topic: Dynamic compression calculator
- Replies: 27
- Views: 580
Re: Dynamic compression calculator
What calculator do y'all like to use? I've used two different ones online, same exact information on both, and one gave me a DCR of 8.91:1 and the other gave me a 9.86:1. Which obviously is a confusing/worrisome issue for my current build if its the 9.86:1. It seems to run fine on 93 pump gas at fu...
- Tue Feb 23, 2021 2:06 pm
- Forum: Engine Tech
- Topic: 097 sbc cam
- Replies: 24
- Views: 1058
Re: 097 sbc cam
For the 097 all lash is set at 0.008" lifter raise. I have 285 degrees for 0.008" lifter raise. For the 30 30 the lash is set at 0.020" lifter raise. I have 314 degrees at 0.020" lifter raise.
Stan
Stan
- Tue Feb 23, 2021 12:08 pm
- Forum: Engine Tech
- Topic: 097 sbc cam
- Replies: 24
- Views: 1058
Re: 097 sbc cam
Not sure how good the numbers I have for the 097 are. This shows the 097 with 1.5:1 1.6:1 1.7:1 1.8:1 and the Chevy 30 30 with 1.5:1
Stan
Stan
- Sat Feb 20, 2021 12:56 pm
- Forum: David Vizard forum
- Topic: Torque Master 90 Day Trial BBC Question
- Replies: 2
- Views: 134
Re: Torque Master 90 Day Trial BBC Question
From July 2020. I know some of you coming in here and reading this thread are saying they added Pontiac? The answer is yes we added Pontiac because I like Pontiac. I want to thank Mike / Pastry_Chef for all of his help during the development of the Pontiac version. I am, although very slowly working...
- Mon Feb 15, 2021 5:20 pm
- Forum: Engine Tech
- Topic: Bill Jenkins , Larry Meaux and header wisdom.
- Replies: 43
- Views: 1730
Re: Bill Jenkins , Larry Meaux and header wisdom.
In this article he said he shifted @ 9000 RPM.
Also he was not running real high CR.
Stan
Also he was not running real high CR.
Stan
- Mon Feb 15, 2021 2:19 pm
- Forum: Engine Tech
- Topic: Bill Jenkins , Larry Meaux and header wisdom.
- Replies: 43
- Views: 1730
Re: Bill Jenkins , Larry Meaux and header wisdom.
OK looking at the article again I guess my cam was not that far off. As Jack said this was a different era. My roller was on a cast core. Stan jenkings_CC_75_Cam.gif VALVE_____Lift______Opens___Closes__Duration _________________Deg_BBDC__Deg_ATDC_____________Area _________0.00000___102.52_|_102.38_|...
- Mon Feb 15, 2021 2:02 pm
- Forum: Engine Tech
- Topic: Bill Jenkins , Larry Meaux and header wisdom.
- Replies: 43
- Views: 1730
Re: Bill Jenkins , Larry Meaux and header wisdom.
From an article in Car Craft Jan '75. The PDF is to large to post.
Stan
Stan
- Mon Feb 15, 2021 9:27 am
- Forum: Engine Tech
- Topic: Bill Jenkins , Larry Meaux and header wisdom.
- Replies: 43
- Views: 1730
Re: Bill Jenkins , Larry Meaux and header wisdom.
This is the Intake from my GK roller from around that time. My understanding is Grumpy's was a very steps wilder. Stan _______I__N__T__A__K__E Rocker_Arm_Ratio_=_1.500_________Valve_Lash_=_0.02400 VALVE_____Lift______Opens___Closes__Duration _________________Deg_BTDC__Deg_ABDC_____________Area _____...
- Fri Feb 05, 2021 2:26 pm
- Forum: Engine Tech
- Topic: 6.000I-1.5L"
- Replies: 16
- Views: 457
Re: 6.000I-1.5L"
The problem I am having is that I bought 6" replacements for these, and the replacements are about 1mm longer. Five of the rods in this strangely marked set are kinked, but my best rods all measure the same, about 1mm shorter than what I was to replace them with. They came milled for cam clearance ...
- Wed Feb 03, 2021 10:56 am
- Forum: Engine Tech
- Topic: lift formula
- Replies: 46
- Views: 3053
Re: lift formula
While it has nothing to do with lift. I did sometime ago start to add exhaust duration to the calculator. I really need to do some more work on it, maybe someday I will get to it.
http://www.magneticlynx.com/carfor/calccamb.php
Stan
http://www.magneticlynx.com/carfor/calccamb.php
Stan