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My first Apten dyno...disappointed :(

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Old Feb 20, 2004 | 12:49 PM
  #31  
ShaneMcKenna203's Avatar
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From: Plainfield, Illinois
Originally posted by Big Man
This sucks, Im missing out on the fun.
I need a new credit card.
hah, funny you should mention that, I just got another credit card in the mail yesterday. I could have some fun with these. I just think the fun wouldnt last much longer after the statement came.

to ya Jim. I wanna see you run that Apten. Let me know when you go to 41 or maybe you can come out to Joliet here. I want to run a few more times.
Shane
 
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Old Feb 21, 2004 | 01:18 AM
  #32  
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From: Eddyville, Ky
Originally posted by ShaneMcKenna203
hah, funny you should mention that, I just got another credit card in the mail yesterday. I could have some fun with these. I just think the fun wouldnt last much longer after the statement came.

Shane
I hear that. Today I did sign up for a new credit card. Should get it in a couple of weeks. Hopfully then I can start having some fun.
 
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Old Feb 21, 2004 | 02:26 AM
  #33  
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Who says 12.2-12.4 is extremely lean. It might be lean but not that lean. Get into the 12.8- higher then talk very lean. Keep your tune correct and you can run low to mid 12 a/f all day.
 
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Old Feb 22, 2004 | 09:19 PM
  #34  
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I have some information I would like to discuss with you regarding a possible reason your gains could be less than others but you have your email blocked, please email me so we can discuss some findings Ive seen.
 
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Old Feb 22, 2004 | 10:16 PM
  #35  
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hey first time poster just checking if it works:
 
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Old Feb 22, 2004 | 10:27 PM
  #36  
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now im double checking
 
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Old Feb 23, 2004 | 07:52 AM
  #37  
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From: Indiana
Originally posted by BigFan
I have some information I would like to discuss with you regarding a possible reason your gains could be less than others but you have your email blocked, please email me so we can discuss some findings Ive seen.
Are you talking to me here?
 
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Old Feb 23, 2004 | 02:46 PM
  #38  
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Originally posted by fractaldragon
Are you talking to me here?
Yes I am
 
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Old Feb 23, 2004 | 04:12 PM
  #39  
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From: Indiana
Originally posted by BigFan
Yes I am
Have AOL instant messenger? I am lanchefan21 on there.

 
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Old Feb 23, 2004 | 11:25 PM
  #40  
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From: The People's Republic of Los Angeles
Originally posted by Rob_02Lightning
. . . Sorry you feel cheated but the Diff is in the RICHER TUNE
and you should thank your lucky stars for it. With A/F's in the mid 12's it was only a matter of time before it threw a Rod. . .
That is one of the most intelligent things that I have seen posted around here in a while. Thank God that someone else understands that it is detonation that snaps rods, not boost.
 
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Old Feb 23, 2004 | 11:35 PM
  #41  
Tim Skelton's Avatar
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From: The People's Republic of Los Angeles
Originally posted by Nathan
The Apten's increased thermal efficiency is conducive to high boost. . .

Just a thought, but maybe people are breaking rods from too much timing. Could it be that high boost, and advanced timing is side-loading the rods somewhat? or that too much advance (even with safe fuel) is increasing stress on the piston by ramping up combustion too close to TDC and putting excessive stress on the rods causing them to deflect rather than spin the crank as intended? I'm really surprised that with all these rod failures we arent hearing about bearings at all...
Please show me data showing better thermal efficiency from the ported blower. I ain't sayin' that it's not so, but after spending some time over the past month collecting supercharger efficiency data, I can tell you that it's not easy. I would be surprised if anyone has actually done it.

As to the rod issue, it is definitely detonation. You can search my previous posts, but it's easy to explain. Even massive amounts of boost will not create excessive loads on the rods on the power stroke -- IFF there is no detonation. The loads on a rod are greatest as the rod makes the downturn from TDC and wants to pull itself apart. Way greater than compressive loads from combustion. And it goes up exponentially with RPMs (remember that when you have your tuner up the rev limiter).

If you add the slightest combustion anomaly, however, the whole thing goes out the window. Even mild detonation (which may be completely inaudible on a SC engine) causes compressive loads an order of magnitude greater than those produced by the force of the normal explosion from even huge amounts of boost.

I have no idea why this is not better understood.
 
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Old Feb 24, 2004 | 12:24 AM
  #42  
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From: Dyer, IN
Originally posted by JeffsLightning
Yep those darn red L's are so quick.. ...

yeah, until the silver lightnings show up at the track!!!!
 
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Old Feb 24, 2004 | 06:03 AM
  #43  
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Originally posted by Tim Skelton
Please show me data showing better thermal efficiency from the ported blower. I ain't sayin' that it's not so, but after spending some time over the past month collecting supercharger efficiency data, I can tell you that it's not easy. I would be surprised if anyone has actually done it.

As to the rod issue, it is definitely detonation. You can search my previous posts, but it's easy to explain. Even massive amounts of boost will not create excessive loads on the rods on the power stroke -- IFF there is no detonation. The loads on a rod are greatest as the rod makes the downturn from TDC and wants to pull itself apart. Way greater than compressive loads from combustion. And it goes up exponentially with RPMs (remember that when you have your tuner up the rev limiter).

If you add the slightest combustion anomaly, however, the whole thing goes out the window. Even mild detonation (which may be completely inaudible on a SC engine) causes compressive loads an order of magnitude greater than those produced by the force of the normal explosion from even huge amounts of boost.

I have no idea why this is not better understood.



Tim,

I would have trouble even telling you what most of those words even mean .

I am thinking of the Apten porting this way. I can make more boost, and spin the rotors less...thus creating less heat.

Is there any significance in this line of thought?

Heck...I know this much....my truck runs quicker...even with a smaller diameter lower pulley.


Thanks for an help here Tim.


Rocks
 
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Old Feb 24, 2004 | 06:08 AM
  #44  
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From: Stinkin Joisey
Originally posted by blown318
yeah, until the silver lightnings show up at the track!!!!

LMAO
 
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Old Mar 8, 2004 | 07:33 PM
  #45  
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From: Andover, Ma
Originally posted by Tim Skelton

As to the rod issue, it is definitely detonation. You can search my previous posts, but it's easy to explain. Even massive amounts of boost will not create excessive loads on the rods on the power stroke -- IFF there is no detonation. The loads on a rod are greatest as the rod makes the downturn from TDC and wants to pull itself apart. Way greater than compressive loads from combustion. And it goes up exponentially with RPMs (remember that when you have your tuner up the rev limiter).

If you add the slightest combustion anomaly, however, the whole thing goes out the window. Even mild detonation (which may be completely inaudible on a SC engine) causes compressive loads an order of magnitude greater than those produced by the force of the normal explosion from even huge amounts of boost.

I have no idea why this is not better understood.

I don't know how many times I have seen people post this and yet still 90% of the people have no clue. The rods are the weakest link in the motor but they are NOT weak!!

If you don't run your motor lean and keep the timing conservative enough to not detonate you will never blow up a motor at the power levels most of us are running.

Pump gas is pure crap, its almost worthless for forced induction applications and people keep trying to run monster boost and lean curves and wonder why things blow up.

My other 2 cars have a way to monitor detonation and the computer pulls out timing when it "hears" it. I can't even begin to hear detonation on those cars until the computer is already pulling 14-15 degrees out.

Its scary when people say they can HEAR detonation.. Man thats BAD. That will kill a motor faster than anything else you can do.

The trick is a SAFE pumpgas tune and race with good octane!!

Bah nobody listens anways...

 
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