[Ray Cox]

To put the statement that Jeff "Did not even pull a valve cover" in context his car was surrounded by Ford & Chevy motors up and down pit row, racing the same track same conditions same air, and same number of rounds... that were being torn down to the crank at night to make the call the next day.

[Ray Cox]

Originally Posted by john marcella

But maybe if you had pulled them off you might have made it to the 3rd round .093 to a .033

I know your just bustin balls, but Jeffs reaction time was more on the car than him with a learning curve to adapt to the small tire. I made the same change early in the year he will add another part and fix it!

[Jeff Kinsler]

http://www.yellowbullet.com/forum/sh...php?t=604862.\


George, this is a post on yellowbullet about the ultimate street cars (my class) that broke at Nio Mercy..

[David Holmberg]

Wasn't Jeff's fault, his alarm clock let him down...

[LiL Jack]

Too much moonshine I would say.

[Jeff Kinsler]

Originally Posted by LiL Jack

Too much moonshine I would say.

moonshine was good!!!

[john marcella]

Originally Posted by Ray Cox

I know your just bustin balls, but Jeffs reaction time was more on the car than him with a learning curve to adapt to the small tire. I made the same change early in the year he will add another part and fix it!

Yes just giving him a hard time

I know the deal, when you are pulling a lot of timing out at the hit, the reaction times go in the toilet.

[john marcella]

Originally Posted by Jeff Kinsler

http://www.yellowbullet.com/forum/sh...php?t=604862.\


George, this is a post on yellowbullet about the ultimate street cars (my class) that broke at Nio Mercy..

Wow, just be glad your motor made it out alive.

[Jeff Kinsler]

Originally Posted by john marcella

Wow, just be glad your motor made it out alive.

I know. thats what im saying.. got our ultra race this saturday. damn Im tired!!

[Tom Vaught]

Originally Posted by GTOGEORGE

DAMN, it was a statement made in general as opposed to being be a SLAM in its context.

GTO George

Read this a few times George and I bet you can figure out why you are still in the low 8s.

I fixed your post and shortened it up a bit. THIS IS NOT A SLAM!

For engines with a positive-displacement blower, (George has a 8-71 Supercharger), the primary control of mass-air flow rate at WOT is the Positive Displacement (ROOTS) supercharger at all rpm. As a result, cams, porting the heads, headers, or other similar changes that serve to improve the VE of the engine won’t result in as large a gain in power or torque compared to an NA or turbo engine, (unless the SC IS SPUN FASTER relative to the engine at any given engine speed.)

An increase in VE of the engine will reduce boost pressure. (George has Ported Heads) This drop in boost pressure reduces the drive power required to compress the air and also tends to increase the supercharger’s volumetric efficiency slightly, thereby resulting in a little more air going into the engine (than there was at the higher boost pressure). Both these effects do result in SOME gain in power and torque, but they won’t be as large relative to the increase in VE of the engine. These effects occur at all rpm. The larger the increase in VE of the engine, the larger these effects will be. (Therefore, the lower VE of the engine is to begin with, the higher the potential there is for gains to be made and vice versa.) The size of the gains also depends on the efficiency of the blower (the more efficient, the smaller the gain and vice versa), how much boost is being run, and the baseline power level. The more boost and baseline power, the larger the HP gains. Because VE of the Engine, VE of the Supercharger, Adiabatic Efficiency, and the Mass-Air Flow Rate are all functions of RPM, the size of the gains will also be a function of rpm.

A drop in boost pressure and the reduction in Intake Air Temperature will also reduce the octane requirement of the engine, which pulls it further away from the knock limit. In other words, it can be safer. To many, this alone may be worth the expense. Alternatively, from the performance point of view, one could increase timing or bring the boost back up, (or some combination of the same), for a higher octane fuel.

So George is running methanol I believe so that takes care of the last paragraph BUT

Unless he spins the supercharger faster, the supercharger is basically a "governor" and will basically keep Goerge in the 8s unless he turns the SC faster.

I keep reading that you do not want to spin it faster so all of that KRE Head stuff, methanol stuff, etc really isn't doing much for you. The SC RPM is your cork George.

Have a nice evening.

Tom Vaught

[bad69bird]

Originally Posted by john marcella

But maybe if you had pulled them off you might have made it to the 3rd round .093 to a .033

DIDTHATJUSTHAPPEN!?!?

[GTOGEORGE]

Tom,
Really Tom is that the BEST you can do because if it is it's pretty pathetic! Don't you need to spend time with your family or something? I'm running what I'm running because I want to........DUH! I'm still quicker then probably 95% of Pontiacs out there (after all I do have a Pontiac), I'm never going to be the quickest (cars too heavy and old) so does it really matter........NO! I'm having FUN!! Ya, it's FUN not working on the car all the time and driving it to and back from a run!


GTO George

[Brian Baker]

Lighten up on George, Tom. His cork used to be his trailer. Now it's his SC. He's making progress, so lighten up.

[Jeff Kinsler]

Originally Posted by bad69bird

DIDTHATJUSTHAPPEN!?!?

YESITDID!!

[GTOGEORGE]

I have no CORK in my set up I'm running fine, thank You!


GTO George

[mike leech]

This thread has a certain "entertainment value" that makes it kinda fun....carry on

[GTOGEORGE]

I'm not sure if entertaining is the word I would use but STUPID......yes!


GTO George

[Stan Weiss]

Originally Posted by Tom Vaught

Read this a few times George and I bet you can figure out why you are still in the low 8s.

I fixed your post and shortened it up a bit. THIS IS NOT A SLAM!

For engines with a positive-displacement blower, (George has a 8-71 Supercharger), the primary control of mass-air flow rate at WOT is the Positive Displacement (ROOTS) supercharger at all rpm. As a result, cams, porting the heads, headers, or other similar changes that serve to improve the VE of the engine won’t result in as large a gain in power or torque compared to an NA or turbo engine, (unless the SC IS SPUN FASTER relative to the engine at any given engine speed.)

An increase in VE of the engine will reduce boost pressure. (George has Ported Heads) This drop in boost pressure reduces the drive power required to compress the air and also tends to increase the supercharger’s volumetric efficiency slightly, thereby resulting in a little more air going into the engine (than there was at the higher boost pressure). Both these effects do result in SOME gain in power and torque, but they won’t be as large relative to the increase in VE of the engine. These effects occur at all rpm. The larger the increase in VE of the engine, the larger these effects will be. (Therefore, the lower VE of the engine is to begin with, the higher the potential there is for gains to be made and vice versa.) The size of the gains also depends on the efficiency of the blower (the more efficient, the smaller the gain and vice versa), how much boost is being run, and the baseline power level. The more boost and baseline power, the larger the HP gains. Because VE of the Engine, VE of the Supercharger, Adiabatic Efficiency, and the Mass-Air Flow Rate are all functions of RPM, the size of the gains will also be a function of rpm.

A drop in boost pressure and the reduction in Intake Air Temperature will also reduce the octane requirement of the engine, which pulls it further away from the knock limit. In other words, it can be safer. To many, this alone may be worth the expense. Alternatively, from the performance point of view, one could increase timing or bring the boost back up, (or some combination of the same), for a higher octane fuel.

So George is running methanol I believe so that takes care of the last paragraph BUT

Unless he spins the supercharger faster, the supercharger is basically a "governor" and will basically keep Goerge in the 8s unless he turns the SC faster.

I keep reading that you do not want to spin it faster so all of that KRE Head stuff, methanol stuff, etc really isn't doing much for you. The SC RPM is your cork George.

Have a nice evening.

Tom Vaught

Tom,
You are too wordy. He needs to stop looking at boost / pressure ratio and look at density ratio.

Stan

[GTOGEORGE]

.............and I rest my case! LOL!!


GTO George

[ventura7211]

Originally Posted by GTOGEORGE

Ya, it's FUN not working on the car all the time and driving it to and back from a run!

Who's car isn't capable of driving to and back from a run?

Maintenance and tuning the car to its best ability on any given day and track isn't fun but instead "work"? Hell, that is over half of the fun of going to the track for some people...