Shaping up a new-to-me 07 GT3
#826
Instructor
Wow - this is truely awesome - I'm impressed. I would think there is some more torque and HP to be gained around 4500-7000 RPM, as evidenced by all the other GT3 engine types and their runs vs your flat curves. I imagine it's some tricky/time consuming stuff to eek out those last bits.
What do you think your total hours on just the engine were? Maybe we can guess, and you tell us.
I'll go for 100 hours.
What do you think your total hours on just the engine were? Maybe we can guess, and you tell us.
I'll go for 100 hours.
#827
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Wow - this is truely awesome - I'm impressed. I would think there is some more torque and HP to be gained around 4500-7000 RPM, as evidenced by all the other GT3 engine types and their runs vs your flat curves. I imagine it's some tricky/time consuming stuff to eek out those last bits.
What do you think your total hours on just the engine were? Maybe we can guess, and you tell us.
I'll go for 100 hours.
What do you think your total hours on just the engine were? Maybe we can guess, and you tell us.
I'll go for 100 hours.
I didn't keep tab on the hours. The project spanned across 37 days(evenings and weekends). I used up a lot of hours unnecessarily and obsessively measuring repeatedly, machining, re-doing from mistakes, and re-doing from change of mind. I am going to say closer to 150 hours. If it was a "follow a formula" type of project without the need for custom machining, cc'ing pistons for calculations, then it should be less than half of 150 hours.
__________________
PCA National Instructor
TPC Racing stats:
2023 Porsche Sprint Challenge 992 Cup Am Champion
2023 Porsche Sprint Challenge GT4 Pro-Am Team Champion
2022 Porsche Sprint Challenge 992 Cup & 991 Cup Champion
2020 IMSA GT3 Cup Challenge 2nd Championship
2018 IMSA GT3 Cup Challenge 2nd Championship
2016 IMSA GT3 Cup Challenge Champion
2013 IMSA GT3 Cup Challenge Champion
2006 Rolex-24 @ Daytona GT Champion
2004 Grand-Am SGS Class Champion
PCA National Instructor
TPC Racing stats:
2023 Porsche Sprint Challenge 992 Cup Am Champion
2023 Porsche Sprint Challenge GT4 Pro-Am Team Champion
2022 Porsche Sprint Challenge 992 Cup & 991 Cup Champion
2020 IMSA GT3 Cup Challenge 2nd Championship
2018 IMSA GT3 Cup Challenge 2nd Championship
2016 IMSA GT3 Cup Challenge Champion
2013 IMSA GT3 Cup Challenge Champion
2006 Rolex-24 @ Daytona GT Champion
2004 Grand-Am SGS Class Champion
#829
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#830
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This is the last big ticket item for me for a while. The MoTeC V2 camera will sync seamlessly to my CDL3 dash. I look forward to playing with the i2 software. Time to stop tinkering and start driving. I signed up for a track event this weekend but it might cancel due to snow. Ugh.
#831
Drifting
This is the last big ticket item for me for a while. The MoTeC V2 camera will sync seamlessly to my CDL3 dash. I look forward to playing with the i2 software. Time to stop tinkering and start driving. I signed up for a track event this weekend but it might cancel due to snow. Ugh.
#832
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Works fine for me.
Here's Motec i2 data overlay of my best lap from last Summer(black lines) with the 3.6 engine to my best lap from last Sunday. The cursor shows a 7.3mph gain from the 4.0 engine. The rest, well, last Sunday's ambient temps was mid-30's to 40's F, the tires were R7's with 18 heat cycles from last Summer that were stored frozen for months, and MOSTLY I was just not driving as well as I did last Summer; braking way too early and too much, and less consistent. If the best parts of the two overlay were combined then would be a pretty good lap. Looking forward to warmer weather and fresh tires!
Here's Motec i2 data overlay of my best lap from last Summer(black lines) with the 3.6 engine to my best lap from last Sunday. The cursor shows a 7.3mph gain from the 4.0 engine. The rest, well, last Sunday's ambient temps was mid-30's to 40's F, the tires were R7's with 18 heat cycles from last Summer that were stored frozen for months, and MOSTLY I was just not driving as well as I did last Summer; braking way too early and too much, and less consistent. If the best parts of the two overlay were combined then would be a pretty good lap. Looking forward to warmer weather and fresh tires!
#833
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Here's the animation function of the two laps in a youtube video. Kind of fun to watch. Pardon the background typing noise.
Last edited by Tom@TPC Racing; 04-12-2018 at 06:33 PM.
#834
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#836
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I've got another channel you can should add https://www.instagram.com/p/BhdyBwSgKws
#837
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Full Scale Flares, Part 1
I haven't driven my car since that one cold day in April but I feel the need to do another project in the little bit of spare time that I have. These projects are essential for me as an outlet to the stress of everyday life. Its me, the car, hand tools and don't answer the phone for like ten hours is total bliss. So, ever since I was a kid building TAMIYA car models I've always liked car with fender flares so lets go with .2 Cup fender flares. This time is the real thing, not 1/24 scale!
Here's the Porsche Motorsport .2 Cup fender flare pieces painted.
I purposely let my finger nails grew longer to scratch & peel off the portion of clear film that the bumper winglets will overlap.
As you can see in the 4 pics below the inside of the bumper winglets isn't flat, each one have a flap and bump to prevent from seating flush on plain surface.
Without using multi-dimensional modeling equipment a combination of measurement with approximation and intuition is needed to determine the area to be cut.
I had a little moment of second thought with saw in hand but F-it, lets cut up a $7K front bumper!
It took multiple cuts to have .2 Cup winglets fitted to .1 bumper. One cut at a time it gets closer to fitting.
Its hard to fathom I spend 3.5 hours measuring, marking, cutting, and fitting the first winglet.
This is the end of Part 1, with winglet fitted. NOT a direct bolt-on!
Here's the Porsche Motorsport .2 Cup fender flare pieces painted.
I purposely let my finger nails grew longer to scratch & peel off the portion of clear film that the bumper winglets will overlap.
As you can see in the 4 pics below the inside of the bumper winglets isn't flat, each one have a flap and bump to prevent from seating flush on plain surface.
Without using multi-dimensional modeling equipment a combination of measurement with approximation and intuition is needed to determine the area to be cut.
I had a little moment of second thought with saw in hand but F-it, lets cut up a $7K front bumper!
It took multiple cuts to have .2 Cup winglets fitted to .1 bumper. One cut at a time it gets closer to fitting.
Its hard to fathom I spend 3.5 hours measuring, marking, cutting, and fitting the first winglet.
This is the end of Part 1, with winglet fitted. NOT a direct bolt-on!
#838
Rennlist Member
I haven't driven my car since that one cold day in April but I feel the need to do another project in the little bit of spare time that I have. These projects are essential for me as an outlet to the stress of everyday life. Its me, the car, hand tools and don't answer the phone for like ten hours is total bliss. So, ever since I was a kid building TAMIYA car models I've always liked car with fender flares so lets go with .2 Cup fender flares. This time is the real thing, not 1/24 scale!
997 503 931 96 Fender Left 997 GT3 Cup 10- $494.93
997 503 932 96Fender Right 997 GT3 Cup 10- $531.53
And then add the cup fender liners as well.
#840
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