| 02-15-2018, 09:12 PM | #1 |
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F10 1/4 WR: 9.9s / 142.5mph 1/2 WR: 175.5mph
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SSP Spec-Z Clutch
With the levels of torque the car was making and the ratings for the Spec-R clutch (around 900 ft-lbs crank or 750 ft-lbs at the wheel) I decided to contact Kris @ SSP and inquire about what he may have to support the 1000ft-lbs at the wheel or 1200ft-lbs at the crank levels. I was surprised the Spec-R (new clutch) held to around 900 ft-lbs at the wheels but couldn't hold much power beyond that. At the 750 ft-lb at the wheels range they are perfect as advertised! Also shows the capability of a product when it performs beyond its advertised specifications!
So, back to the issue at hand...turns out Kris has a Spec-Z version (20-plate). Kudos to Kris to get that turned very quickly and shipped. With a core housing Kris sent the assembled housing including baskets etc. so the install process just involves removing the DCT and swapping the housing assembly. Finished up the install at Trinity Autosports (Joe did the clutch on my previous car as well) and now in the break-in process. Initial observations - shifts and feels like stock with no apparent difference to the Spec-R. Keep in mind I am staying under 3-4K RPM and little to partial load only. The adaptations worked the first time. I will re-adapt again once break-in is complete. Now that the CSF/Pure IC's are installed as well, will plan on another dyno to see what kind of power the car is capable of. Now that we know the clutch can hold its time to unleash even more boost! Stay tuned... Last edited by allmotor_2000; 02-15-2018 at 09:21 PM.. |
| 02-16-2018, 02:26 PM | #4 |
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Great to hear that you will be able to use all of your power.
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| 02-16-2018, 02:30 PM | #5 |
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| 02-16-2018, 03:15 PM | #6 | |
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F10 1/4 WR: 9.9s / 142.5mph 1/2 WR: 175.5mph
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| 02-17-2018, 02:18 AM | #7 |
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waiting for dyno results,, good luck
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| 02-18-2018, 06:26 PM | #9 | |
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F10 1/4 WR: 9.9s / 142.5mph 1/2 WR: 175.5mph
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| 02-18-2018, 11:17 PM | #10 |
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F10 1/4 WR: 9.9s / 142.5mph 1/2 WR: 175.5mph
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So break-in completed. I decided to hook up ISTA-D and do another clutch teach-in along with all the DCT adaptations.
Did a quick drive at 22psi and felt good. Will put some race fuel in and try higher boost later this week. The ‘bite’ seems harder upon shifts. Intimately I need the Spec-Z to hold around 1000+ ft-lbs torque at the wheels so let’s see how it does! Sorry far so good... |
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| 02-19-2018, 11:37 AM | #11 | |
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2019 F90 M5 Competition - Marina bay Blue Pearl - Executive and Bowers & Wilkins package
Gone:2013 F10 M5-DCT-Montecarlo Pearl Blue-BBMR 800 Stage 1 system 700whp+(93oct) 2004 Lamborghini Gallardo-Manual-Giallo Midas Pearl Yellow-Modified 2018 Range Rover Velar S-White Last edited by steeve13m; 02-19-2018 at 03:33 PM.. |
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| 02-19-2018, 11:42 AM | #12 |
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F10 1/4 WR: 9.9s / 142.5mph 1/2 WR: 175.5mph
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It’s the same - why would there be a difference? The clutch doesn’t know if it was up or down? It is pre-engaged depending on the situation. IF you are accelerating and then suddenly decide to downshift there may be a delay but not if it’s in any predictable flow
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