VIDEO at Idle plus streetability and WOT with my 511rwhp / FTI
10-08-2008, 02:32 PM
#143
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It is certainly one of my last post in this thread as the engine is going to be a LS3 Stroker Short-Block by Erik Koenig and the Cylinder Heads ETP by FTI Ed Curtis hand ported very soon...
I am duplicating a post from this morning from another forum where I was answering a technical question.
Here is how I did tune this engine, and how I extract the most of it.
All the tests have been operated on the same road, same starting point, all engine temperature monitored and similar in a window of 5°F, same wheels and all the parameters that could affect performance as much as possible under control.
Acceleration is monitered in 4th gear which is ratio one on this Corvette.
I use an accurate weather station for all my passes.
With each test I produce an electronic Acceleration Sheet as below:
Timing is closely linked to AFR to obtain the best results, then I will provide both data to make it accurate.
Max Torque is at ~4400rpm, Timing is 21° and AFR is 12.40:
Max Power is at ~6400rpm, Timing is 25° and AFR is 13.20:
One item that was impossible to work on with a Dynojet was the Power in High Revs, on the road the results are significant in this zone.
Timing is 26° and AFR is 11.90 at ~7200rpm:
The Timing table is looking nice and is optimized for drivability as well, it took a lot of method and was time consuming:
Christian
I am duplicating a post from this morning from another forum where I was answering a technical question.
Here is how I did tune this engine, and how I extract the most of it.
All the tests have been operated on the same road, same starting point, all engine temperature monitored and similar in a window of 5°F, same wheels and all the parameters that could affect performance as much as possible under control.
Acceleration is monitered in 4th gear which is ratio one on this Corvette.
I use an accurate weather station for all my passes.
With each test I produce an electronic Acceleration Sheet as below:
Timing is closely linked to AFR to obtain the best results, then I will provide both data to make it accurate.
Max Torque is at ~4400rpm, Timing is 21° and AFR is 12.40:
Max Power is at ~6400rpm, Timing is 25° and AFR is 13.20:
One item that was impossible to work on with a Dynojet was the Power in High Revs, on the road the results are significant in this zone.
Timing is 26° and AFR is 11.90 at ~7200rpm:
The Timing table is looking nice and is optimized for drivability as well, it took a lot of method and was time consuming:
Christian
12-08-2008, 01:58 PM
#145
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I couldn't let this thread go without a last important update...
Engine has been taken apart and in the final process to reborn 416CI...
NONE of the 8 pistons have any signs of contact with the valves, and I have recorded 9 over-revs to 7600rpm and an amazing amount revving to 7500rpm!!!!
This combo rocks.
Christian
Engine has been taken apart and in the final process to reborn 416CI...
NONE of the 8 pistons have any signs of contact with the valves, and I have recorded 9 over-revs to 7600rpm and an amazing amount revving to 7500rpm!!!!
This combo rocks.
Christian
12-09-2008, 02:19 PM
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Hi Doug,
The engine is a product of both Erik Koenig and Ed Curtis, working together to give me the closest of what I was asking.
Attention to detail was high, very high!!!
Low friction crankshaft assembly, low friction rings, customs pistons, valvetrain up to tip-top, custom camshaft using specific lobes, and always hydraulic, ETP cylinder heads upgraded for more cubes and reworked...+++...
The long-block was assembled by Erik in his shop, and shipped last Monday from Texas; it will be soon in Florida;
I will keep you updated, in another new thread...
Christian
The engine is a product of both Erik Koenig and Ed Curtis, working together to give me the closest of what I was asking.
Attention to detail was high, very high!!!
Low friction crankshaft assembly, low friction rings, customs pistons, valvetrain up to tip-top, custom camshaft using specific lobes, and always hydraulic, ETP cylinder heads upgraded for more cubes and reworked...+++...
The long-block was assembled by Erik in his shop, and shipped last Monday from Texas; it will be soon in Florida;
I will keep you updated, in another new thread...
Christian
12-09-2008, 04:21 PM
#150
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About rev limiter and high revving take a look at post #97 and post #99, tried to explained there...
The short-block was stock except a re-ring by GM under warranty...and the KATECH rod-bolt at this occasion for a peace of mind!!!
Thanks for the props...
Christian
12-10-2008, 09:28 AM
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Hi Doug,
The engine is a product of both Erik Koenig and Ed Curtis, working together to give me the closest of what I was asking.
Attention to detail was high, very high!!!
Low friction crankshaft assembly, low friction rings, customs pistons, valvetrain up to tip-top, custom camshaft using specific lobes, and always hydraulic, ETP cylinder heads upgraded for more cubes and reworked...+++...
The long-block was assembled by Erik in his shop, and shipped last Monday from Texas; it will be soon in Florida;
I will keep you updated, in another new thread...
Christian
The engine is a product of both Erik Koenig and Ed Curtis, working together to give me the closest of what I was asking.
Attention to detail was high, very high!!!
Low friction crankshaft assembly, low friction rings, customs pistons, valvetrain up to tip-top, custom camshaft using specific lobes, and always hydraulic, ETP cylinder heads upgraded for more cubes and reworked...+++...
The long-block was assembled by Erik in his shop, and shipped last Monday from Texas; it will be soon in Florida;
I will keep you updated, in another new thread...
Christian
12-14-2008, 01:12 PM
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Patrick G, I will probably be contacting you about specing me a camshaft after the new year. I have read so much about cams on here I think im going crazy. I want two different things that contradict themselves, so I dont know what I need.
sorry about the hijack.
sorry about the hijack.
12-14-2008, 09:35 PM
#158
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And I hope you appreciate the videos!!!
Christian
