Shaner vs Bauer
https://ls1tech.com/ubb/ultimatebb.p...;f=24;t=005015
https://ls1tech.com/ubb/ultimatebb.p...;f=24;t=006501
Our turnaround is 5-10days, but that's because we have alot in and engines and manifolds that we have on the block too.
Bret
From what he explained to me, there is no need to go bigger on stock cubes or a mild H/C combo.
After using an S2 fora while, a friend of his thought like you guys do and wanted the biggest opening he could get, so Mark bored out the biggest opening he could get. The guy was back the next day and said it didn't run like the other did so make not quite so big. They did this two more times until Mark's friend was satisfied. After all the swaps of larger openings, his friend asked what the new combo was, low-and-behold, it was the standard S2 that still made the most power.
You have to understand that at high speeds, air is VERY elastic and a big, straight hole is not always the answer. Leaving the lip just slightly larger than stock allows the throttle body to act like a ventury ( think of an airplane wing, rolled up from the tip to where it attaches to the plane) more then a straw. This design allows the air to flow much quicker b/c of different pressures.
Mark runs the operation at his home and puts out hundreds of TBs a month. If you need to get a hold of him, call him. It's quite difficult for one man to respond to the amount of e-mails he gets.
I am very happy with my S2 and hope that this will help some of you in your choice.
Brandon.
<small>[ March 07, 2003, 12:58 AM: Message edited by: Brandon98TA ]</small>
Do you have track results to support your statement? If what you're saying is true, then don't modify the stock TB, because Shaner barely opens the restriction inside the TB.
I'm not buying one guy's seat of the pants meter, especially with so many variables...weather, tuning etc. I can't really tell a 2mph difference in the 1/4 when I go 125. The ONLY way to know what is working and what is not is at the track in real world conditions. I have done considerable testing and removing all the restrictions clearly works the best for me.
The S2's that I have modified have not been opened up much, the lip Shaner leaves is not round, he leaves a fairly sharp ridge. The blade is stock, the throttle shaft is stock, yet the exit which is already 75mm is opened up and contoured. It doesn't make much sense. You can let someone justify why things are not done and be satisfied with it or look at what's available and use your own reasonable judgement. There is a reason the guys that are in the 10's with H/C are there.
<strong> Brandon,
Do you have track results to support your statement? If what you're saying is true, then don't modify the stock TB, because Shaner barely opens the restriction inside the TB.
I'm not buying one guy's seat of the pants meter, especially with so many variables...weather, tuning etc. I can't really tell a 2mph difference in the 1/4 when I go 125. The ONLY way to know what is working and what is not is at the track in real world conditions. I have done considerable testing and removing all the restrictions clearly works the best for me.
The S2's that I have modified have not been opened up much, the lip Shaner leaves is not round, he leaves a fairly sharp ridge. The blade is stock, the throttle shaft is stock, yet the exit which is already 75mm is opened up and contoured. It doesn't make much sense. You can let someone justify why things are not done and be satisfied with it or look at what's available and use your own reasonable judgement. There is a reason the guys that are in the 10's with H/C are there. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I'll have track times for you by next weekend. The S2 will have been the only change since my last time out.
Like I said before, making the biggest opening possible is not the answer when it comes to airflow. If you look at a carburator, the opening are not big holes, they are venturies. This is why the Shaner works so well, it takes advantage of airs elasticity.
Quick question, if the Shaner is no good, then why is LG Motorsports now including as part of all their H/C packages?
I'm dynoing the car in exactly 3 weeks and will post the #'s.
<strong> Like I said before, making the biggest opening possible is not the answer when it comes to airflow. If you look at a carburator, the opening are not big holes, they are venturies. This is why the Shaner works so well, it takes advantage of airs elasticity.
</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">You may be getting a little confused as to why ported TBs can flow more air than stock ones.
Venturiis are a restriction to airflow, but a necessary evil in a carburetor. Carburetors have venturiis only to mix fuel with the air. The narrowed area of the venturi speeds up the air which drops the pressure (Bernoulli's Law) so the fuel flows into the lower pressure airstream there.
Ported TBs offer less restriction to the flow than stock ones. Different TB porters have different methods of porting to achieve higher airflow. "You pays your money and you takes your choice."
FWIW, air is generally referred to as a compressible fluid rather than an elastic one.
The Best V8 Stories One Small Block at Time
Ryan
<small>[ March 14, 2003, 08:44 PM: Message edited by: KCA13 ]</small>


