View Poll Results: How does your clutch work on maximum acceleration during a 1st to 2nd gear upshift.
Voters: 57. You may not vote on this poll
Clutch Satisfaction
#402
FFL-4 is the same viscosity as FFL-3 at 100 degC & 49 degC, but about 50 % thicker at 20 degC. Not certain this provides any different protection at full operating temps. The FFL-3 is more likely to ensure proper lubrication at lower temps. Remember, lubrication is internally sprayed onto one of the lay shafts in this tranny.
#403
Blackstone replied:
So Jaguar T2R17199 does not appear to be FFL3 fluid. Next time I have some time, I will stop by dealership to get "virgin sample".
I was able to find a couple samples of used Pentosin FFl-3 and the additives look nothing like the sample you submitting. Phosphorus in the 500 ppm range and not much else. Based on the (admittedly limited) samples we have, I'd lean towards this not being Pentosin FFL 3. One more step might be to send in a virgin sample if you can get one.
Our should be value for the viscosity of FFL3 is 41-53 SUS and that's right in line with a product data sheet I found online that was published by Pentosin.
Our should be value for the viscosity of FFL3 is 41-53 SUS and that's right in line with a product data sheet I found online that was published by Pentosin.
#404
High Performance Clutch available soon
From David at Spec Clutch:
I am guessing that I will get the clutch within the next week or two at the latest. I am uncertain when the lightened flywheel will be arriving. However, since I plan on waiting until my current clutch disintegrates (and it will within 15k miles), I will not be installing it for a while anyway. If anyone has an immediate need for a clutch and would like to try this one, let me know. I would let you have the one I have on hand and would turn around right away and order another one (no waiting). This high performance clutch has been designed to handle 500 lb-ft of torque, well beyond the maximum 430 lb-ft produced by a double-pullied & tuned V6. It has also been designed to be compatible with both the Spec lightened flywheel as well as the OEM flywheel.
Update..thepressure rings are coming off today, so they can be assembled this afternoon orfirst thing Monday
Last edited by Unhingd; 05-26-2018 at 08:07 AM.
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SinF (05-26-2018)
#405
#406
I am not certain that's a foregone conclusion as long as you're shifting smoothly.
#407
#408
#409
#410
At this point I am all but certain JLR fluid isn't FFL3. Fluid that came out of my gearbox had 2200 zinc, 3000 calcium, 2000 phosphorus. 100C viscosity is 9.36 to 6.97 of this fluid. However, I am not certain at what temperature would gearbox operate during heavy loads. Any idea?
#411
At this point I am all but certain JLR fluid isn't FFL3. Fluid that came out of my gearbox had 2200 zinc, 3000 calcium, 2000 phosphorus. 100C viscosity is 9.36 to 6.97 of this fluid. However, I am not certain at what temperature would gearbox operate during heavy loads. Any idea?
#412
#413
The discussion I found was specifically about manual transmissions.
#414
#415
It wasn't really an issue, but a discussion. The question was posed about the operating temperature of the gearbox oil under heavy use, so I searched for "manual transmission temperature." The ones who seem to care the most are the ones towing, so that's where I got the information.
On further thought, I recall a neighbor talking about an extra large oil cooler for his NSX. That was prepped for high-speed racing, specifically timed stages, where accuracy wins. Sustained 155mph needed a bit more cooling. Don't know if I have contact information though, as they recently moved.
On further thought, I recall a neighbor talking about an extra large oil cooler for his NSX. That was prepped for high-speed racing, specifically timed stages, where accuracy wins. Sustained 155mph needed a bit more cooling. Don't know if I have contact information though, as they recently moved.
#416
I know I am opening up Unghind's box from Pandora, but he makes for good reading. Lance do you think a cooler could exist for the manual. I know after 4 hour fast drive, things do feel a bit different. Of course there is heat sink in the s/c which is a factor, but a tranny cooler does sound interesting!
#417
I know I am opening up Unghind's box from Pandora, but he makes for good reading. Lance do you think a cooler could exist for the manual. I know after 4 hour fast drive, things do feel a bit different. Of course there is heat sink in the s/c which is a factor, but a tranny cooler does sound interesting!
#418
Auto transmission uses engine coolant for cooling, so it doesn’t have its own coil. See p. 13312.
https://www.dropbox.com/s/t2hfjv7bas...anual.pdf?dl=0
https://www.dropbox.com/s/t2hfjv7bas...anual.pdf?dl=0
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Unhingd (06-22-2018)