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Old 03-19-2012, 05:48 PM   #141
Commanderwiggin
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Looking very forward to you driving your car bro!
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Old 03-19-2012, 05:52 PM   #142
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Here is part of a dyno comparision article that I was talking about in your other point about your dead engine when I said I would be careful about tuning on a DJ and then going and smashing it on the strip or circuit:

You can optimize tuning for a DJ dyno and make big numbers - and you can tune the engine to make the best power under load on a load bearing dyno and blow off the big DJ dyno numbers. Can a tuner cheat and make a load bearing dyno read higher? The only way that could happen is in a Sweep Test - Sweep Tests are the least reliable of all tests, period. There is NO question about that. Since the Rotating Mass is a variable in a Sweep Test (NOT a Steady State Test!), the actual inertia factor entered affects the final HP figure - Tell the software that the vehicle has a lot of rotating mass to accelerate, and the HP number increases. (torque, rpm, acceleration rate and mass are the factors) - just like DJ dyno ignoring the difference in mass of all cars - So - true HP, again - Steady State Test - No acceleration, mass makes no difference, anymore. Torque, RPM and dyne parasitics. Period. True. Can you make a Steady State Test read higher? Really hard to do - The software will NOT take data unless speed and load are completely stable - eliminating cheating. As far as atmospheric conditions making a +/- 10% difference? Unless you REALLY mess with the barometric pressure (and you can look at every atmospheric factor on the test report sheet - it's hard coded to display - and not an option), it is simply, absolutely impossible to do without obvious evidence. Are final tuning optimal dyno settings different on an Inertia dyno vs. a load bearing dyno? For many reasons, final tune settings are different - and, since most load bearing dyno's will do both , there is a choice of tests - from a DJ style Sweep Test to Steady State. Having a choice of those types of tests to do and seeing what the results on the track are, most tuners will choose the Steady State Test over a Sweep Test. Without a doubt - the Steady State test Mode is the most consistently superior method of tuning - anybody who has the capability to do it will echo that sentiment - it's only an arguable point with those who can't do it properly. One of the reasons why the load bearing dyno will provide settings that work better in the real world is that combustion chamber temperatures are more in line with the actual operating temperatures that the engine.

I thought you would be interested in the last sentence. And it explains what I was getting at.
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Old 03-19-2012, 07:14 PM   #143
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Here is part of a dyno comparision article that I was talking about in your other point about your dead engine when I said I would be careful about tuning on a DJ and then going and smashing it on the strip or circuit:

You can optimize tuning for a DJ dyno and make big numbers - and you can tune the engine to make the best power under load on a load bearing dyno and blow off the big DJ dyno numbers. Can a tuner cheat and make a load bearing dyno read higher? The only way that could happen is in a Sweep Test - Sweep Tests are the least reliable of all tests, period. There is NO question about that. Since the Rotating Mass is a variable in a Sweep Test (NOT a Steady State Test!), the actual inertia factor entered affects the final HP figure - Tell the software that the vehicle has a lot of rotating mass to accelerate, and the HP number increases. (torque, rpm, acceleration rate and mass are the factors) - just like DJ dyno ignoring the difference in mass of all cars - So - true HP, again - Steady State Test - No acceleration, mass makes no difference, anymore. Torque, RPM and dyne parasitics. Period. True. Can you make a Steady State Test read higher? Really hard to do - The software will NOT take data unless speed and load are completely stable - eliminating cheating. As far as atmospheric conditions making a +/- 10% difference? Unless you REALLY mess with the barometric pressure (and you can look at every atmospheric factor on the test report sheet - it's hard coded to display - and not an option), it is simply, absolutely impossible to do without obvious evidence. Are final tuning optimal dyno settings different on an Inertia dyno vs. a load bearing dyno? For many reasons, final tune settings are different - and, since most load bearing dyno's will do both , there is a choice of tests - from a DJ style Sweep Test to Steady State. Having a choice of those types of tests to do and seeing what the results on the track are, most tuners will choose the Steady State Test over a Sweep Test. Without a doubt - the Steady State test Mode is the most consistently superior method of tuning - anybody who has the capability to do it will echo that sentiment - it's only an arguable point with those who can't do it properly. One of the reasons why the load bearing dyno will provide settings that work better in the real world is that combustion chamber temperatures are more in line with the actual operating temperatures that the engine.

I thought you would be interested in the last sentence. And it explains what I was getting at.
This has what to do with Marcus's build?
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Old 03-19-2012, 07:21 PM   #144
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This has what to do with Marcus's build?
About as much as the tune had to do with my motor blowing.
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Old 03-19-2012, 08:11 PM   #145
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About as much as the tune had to do with my motor blowing.


Good luck to you and your build!
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Old 03-19-2012, 08:25 PM   #146
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About as much as the tune had to do with my motor blowing.
It's all in the hips...er sleeves!
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Old 03-19-2012, 08:47 PM   #147
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Kinda wish there was some pictures in the new build thread....just sayin. Glad things are moving quick so far.
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Old 03-19-2012, 08:59 PM   #148
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Good luck on your build, Marcus. I'm pulling for you to make it to MFEST.

BTW, I would name it "the final stage", but we all know that it won't be the last stage haha.
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Old 03-20-2012, 12:23 AM   #149
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Hope ya make it to MFest!!!

Off topic, but oddly enough, #5...

http://forum.e46fanatics.com/showthread.php?t=910512
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Old 03-20-2012, 12:29 AM   #150
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the compression and leak down of my car is fine its a built boosted motor and its within specs.........stop speculating. the car runs flawlessly, its only being sold due to a divorce

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Everyone wants to have a hero engine, but don't believe all the hype you hear about 2 percent leakage engines. No cylinder seals perfectly, especially if the engine is nitroused, supercharged, or turbocharged where the top and second rings are set with wide ring endgaps. Even for normally aspirated engines, respectable leakage numbers would be anywhere from 8 to 12 percent with a variation between cylinders of 5 to 6 percent, but it's possible the variation could be as high as 10 percent.
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Old 03-20-2012, 12:56 AM   #151
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Hope ya make it to MFest!!!

Off topic, but oddly enough, #5...

http://forum.e46fanatics.com/showthread.php?t=910512
We discovered what occurred this morning when we brought the motor to another machine shop. Lets just say Funky's wouldn't likely be affected by the problem mine had.

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the compression and leak down of my car is fine its a built boosted motor and its within specs.........stop speculating. the car runs flawlessly, its only being sold due to a divorce
I'm sure your car is fine.
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Old 03-20-2012, 01:04 AM   #152
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We discovered what occurred this morning when we brought the motor to another machine shop. Lets just say Funky's wouldn't likely be affected by the problem mine had.



I'm sure your car is fine.

thanks marcus, look forward to your build. stage "what the F**k just passed me?"
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Old 03-20-2012, 01:22 AM   #153
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We discovered what occurred this morning when we brought the motor to another machine shop. Lets just say Funky's wouldn't likely be affected by the problem mine had.



I'm sure your car is fine.
WTF you can't just leave us hanging like that... Spill the beans marcus
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Old 03-20-2012, 01:31 AM   #154
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WTF you can't just leave us hanging like that... Spill the beans marcus
I'm not trying to stir the pot. :\
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Old 03-20-2012, 01:46 AM   #155
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I'm not trying to stir the pot. :\
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Old 03-20-2012, 01:54 AM   #156
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C'mon put them beans in the pot and stir it, its bound to come out sooner or later
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Old 03-20-2012, 05:25 AM   #157
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Yeah I want to know what was wrong too. I have a built motor and one day want to go proefi for their traction control and e85. Just wondering if I will be affected in the same way. Spill the beans!
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Old 03-20-2012, 05:46 AM   #158
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We discovered what occurred this morning when we brought the motor to another machine shop. Lets just say Funky's wouldn't likely be affected by the problem mine had.



I'm sure your car is fine.
Interesting.
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Old 03-20-2012, 09:55 AM   #159
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I'm not trying to stir the pot. :\
pots already been stirred, shaken and blown the f up. If proefi didn't cause the damage then post the results and clear their name for anyone who doubted (probably not a lot) and in the same sense if hpf didn't cause it then they have the same right. It just causes way more conspiracy theories if you don't, especially now that its at Saads. I just think that with so many people involved in this and the attention it has gotten it would be unfair for everyone that helped out to be left in the dark.


P.S. maybe you can make a video of it....
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Old 03-20-2012, 11:13 AM   #160
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We discovered what occurred this morning when we brought the motor to another machine shop. Lets just say Funky's wouldn't likely be affected by the problem mine had.
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Originally Posted by MarcusLSB View Post
I'm not trying to stir the pot. :\
Funky doesn't have a sleeved block but we do... So what's up Marcus?
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