Disappointing dyno run... :( :(
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From: Lakeland, FL
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St. Jude Donor '03, '06, '17
Re: Disappointing dyno run... :( :( (GrandSportC3)
I just checked the gas pedal assembly and noticed that the plastic bracket that holds the gas pedal is broken and the pedal is somewhat lose... This might have been the problem... will see.
Olivier
Olivier
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Re: Disappointing dyno run... :( :( (GrandSportC3)
Exhaust cannot be the problem too: 1 3/4 inch primaries and 4 inch collector - open (exept for 2 disc CCI Inserts)
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From: Lakeland, FL
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St. Jude Donor '03, '06, '17
Re: Disappointing dyno run... :( :( (nunus79)
Exhaust cannot be the problem too: 1 3/4 inch primaries and 4 inch collector - open (exept for 2 disc CCI Inserts)
Are 2 disc CCI inserts supposed to flow good? Sounds restrictive. That could cut your upper rpm power level a good bit if it is. I dunno, just a thought...........
Are 2 disc CCI inserts supposed to flow good? Sounds restrictive. That could cut your upper rpm power level a good bit if it is. I dunno, just a thought...........
Check:
http://www.speeddirect.com/Products/...c_inserts.html
:cheers:
Olivier
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St. Jude Donor '03, '06, '17
Re: Disappointing dyno run... :( :( (Glenn454)
You might want to try a Performer RPM intake. Your combo just needs some fine tuning. :)
:cheers:
Olivier
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Re: Disappointing dyno run... :( :( (GrandSportC3)
That dyno sheet looks kinda strange, is that max HP at 50MPH ?
What gear was he in I hope it wasn't 5th ?
What gear was he in I hope it wasn't 5th ?
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St. Jude Donor '03, '06, '17
Re: Disappointing dyno run... :( :( (MotorHead)
That dyno sheet looks kinda strange, is that max HP at 50MPH ?
What gear was he in I hope it wasn't 5th ?
What gear was he in I hope it wasn't 5th ?
:cheers:
Olivier
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St. Jude Donor '03, '06, '17
Re: Disappointing dyno run... :( :( (GrandSportC3)
the torque curve had some interruptions because the RPM sensor lost the signal several times during the pull...
:cheers:
Olivier
:cheers:
Olivier
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Drifting
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From: Goulburn, Australia NSW
Re: Disappointing dyno run... :( :( (GrandSportC3)
Olivier...I know you're disappointed about your HP figures so far, and I know you'll sort it out for the better soon enough, but I wouldn't worry too much about the figures themselves. It's the seat of the pants feeling that should be the criterea for whether you're happy with the motor or not. Not so much that the dyno doesn't read high enough.
Good luck anyhow.
Good luck anyhow.
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Re: Disappointing dyno run... :( :( (Brutus)
Olivier,
I don't know all the technical stuff but I'm sure there's a reason the numbers didn't come to what you hoped for. I saw first hand how nice it runs, so track down the cause and run it again, I'm betting it will do much better. :cheers:
I don't know all the technical stuff but I'm sure there's a reason the numbers didn't come to what you hoped for. I saw first hand how nice it runs, so track down the cause and run it again, I'm betting it will do much better. :cheers:
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From: Lakeland, FL
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St. Jude Donor '03, '06, '17
Re: Disappointing dyno run... :( :( (Brutus)
Olivier...I know you're disappointed about your HP figures so far, and I know you'll sort it out for the better soon enough, but I wouldn't worry too much about the figures themselves. It's the seat of the pants feeling that should be the criterea for whether you're happy with the motor or not. Not so much that the dyno doesn't read high enough.
Good luck anyhow.
Good luck anyhow.
:cheers:
Olivier
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St. Jude Donor '03, '06, '17
Re: Disappointing dyno run... :( :( (C3 Shark Tank)
Olivier,
I don't know all the technical stuff but I'm sure there's a reason the numbers didn't come to what you hoped for. I saw first hand how nice it runs, so track down the cause and run it again, I'm betting it will do much better. :cheers:
I don't know all the technical stuff but I'm sure there's a reason the numbers didn't come to what you hoped for. I saw first hand how nice it runs, so track down the cause and run it again, I'm betting it will do much better. :cheers:
Here is a pic of the bracket that is broken.
:cheers:
Olivier
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From: Living in the Hartland
Re: Disappointing dyno run... :( :( (GrandSportC3)
Here is just an observation Olivier and this might apply to others:
I remember your post on your first burn with the new engine and you were happy as heck with the engine at that point. But after your dyno you where disappointed, maybe not so much with the engine but with the number. It is funny how seeing a number on a piece of paper can change how you feel about your engine. This is no flame intended to anyone just an observation on people's perception and how it can change without anything else changing except seeing something on a piece of paper.
Now about your bracket, can you tell if that is causing you to not be able to open you throttle plates all the way? Hope that is the problem and a little welding can fix it.
I remember your post on your first burn with the new engine and you were happy as heck with the engine at that point. But after your dyno you where disappointed, maybe not so much with the engine but with the number. It is funny how seeing a number on a piece of paper can change how you feel about your engine. This is no flame intended to anyone just an observation on people's perception and how it can change without anything else changing except seeing something on a piece of paper.
Now about your bracket, can you tell if that is causing you to not be able to open you throttle plates all the way? Hope that is the problem and a little welding can fix it.
Thread Starter
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From: Lakeland, FL
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St. Jude Donor '03, '06, '17
Re: Disappointing dyno run... :( :( (Fevre)
Here is just an observation Olivier and this might apply to others:
I remember your post on your first burn with the new engine and you were happy as heck with the engine at that point. But after your dyno you where disappointed, maybe not so much with the engine but with the number. It is funny how seeing a number on a piece of paper can change how you feel about your engine. This is no flame intended to anyone just an observation on people's perception and how it can change without anything else changing except seeing something on a piece of paper.
Now about your bracket, can you tell if that is causing you to not be able to open you throttle plates all the way? Hope that is the problem and a little welding can fix it.
I remember your post on your first burn with the new engine and you were happy as heck with the engine at that point. But after your dyno you where disappointed, maybe not so much with the engine but with the number. It is funny how seeing a number on a piece of paper can change how you feel about your engine. This is no flame intended to anyone just an observation on people's perception and how it can change without anything else changing except seeing something on a piece of paper.
Now about your bracket, can you tell if that is causing you to not be able to open you throttle plates all the way? Hope that is the problem and a little welding can fix it.
Well - it's a plastic bracket and it has to be replaced.... Maybe it is part of the pedal assembly but I'm not sure...
I just checked... At the fully depressed gas pedal - I'm only able to open up the throttle approx. 70% :eek: :eek: :eek:
:cheers:
Olivier
[Modified by GrandSportC3, 8:24 AM 7/11/2002]
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From: Living in the Hartland
Re: Disappointing dyno run... :( :( (GrandSportC3)
Think you found your problem! But now you get to figure out how to fix it. Isn't that supposed to half the fun, fixing it? :confused:
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From: Lakeland, FL
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St. Jude Donor '03, '06, '17
Re: Disappointing dyno run... :( :( (Fevre)
Think you found your problem! But now you get to figure out how to fix it. Isn't that supposed to half the fun, fixing it? :confused:
:cheers:
Olivier
[Modified by GrandSportC3, 8:28 AM 7/11/2002]
Thread Starter
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From: Lakeland, FL
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St. Jude Donor '03, '06, '17
Re: Disappointing dyno run... :( :( (GrandSportC3)
For those who are interested in my problem - I created a new thread:
http://forums.corvetteforum.com/zerothread?id=340591
:cheers:
Olivier
http://forums.corvetteforum.com/zerothread?id=340591
:cheers:
Olivier