F430 F1 Clutch Worn % - Getting lower than a previous read!
Discussion
Hi All - I'm still in the process of evaluating 430s...several are on my short list. One of them has an excellent history file from main agents...but the service invoices showing the clutch wear % have gone down. From 37% some years ago to 20% this year. It hasn't had a new clutch and is still on the original at a current 20,000 miles. I know the value can be reset even if the clutch isn't changed...but is the figure based purely on time/mileage from the last reset? Or does it take into account other faxtors? I'm trying to figure out if this is just an anomaly which the TCU could come up with itself or if something is being hidden etc.
Thanks,
J.
Thanks,
J.
Edited by jezzaaa on Tuesday 1st April 20:28
Batfoy said:
Slightly confused, what do you think the anomaly is?
Presumably that clutch WEAR is going down, rather than remaining clutch. Normally(?) the reading is the wear - ie not the amount left.I've known different Maserati service centres report it differently so perhaps he's getting "remaining life" reported and interpretting it as "percent used"? If so and there is 20% left then you'll soon notice it.
Ah, I see what you mean, couldn't quite work out where/what the question was. I know when I bought mine it was at 20% and is now at 47% so that is definitely being recorded as wear so if applied to the OP then it's definitely a bit odd. However, if being recorded as % remaining then it seems logical (providing the mileage has increased of course).
Edited by Batfoy on Tuesday 1st April 21:08
Batfoy said:
Ah, I see what you mean, couldn't quite work out where/what the question was. I know when I bought mine it was at 20% and is now at 47% so that is definitely being recorded as wear so if applied to the OP then it's definitely a bit odd. However, if being recorded as % remaining then it seems logical (providing the lineage has increased of course).
Hi Guys - sorry I obviously wasn't clear 
Yes, the car I'm looking has a 37% worn on a service invoice from 2016 but then another service in 2024 shows 20%. And it hasn't had a new clutch. So I'm a bit worried that someone has reset it in the intervening time, and the clutch wear is actually much higher. The car is over 20k miles so it's possible it's real reading was getting near the end of its life.So my question was can the worn % be reset if the clutch hasn't been changed in order to conceal the actual wear? And I was asking how the clutch wear % is derived by the TCU...is it just based on time/mileage? or is there an actual thing that allows the car to measure the remaining material on the clutch plate (presuming not!)?
Ta,
J.
Edited by jezzaaa on Tuesday 1st April 20:28
Edited by jezzaaa on Wednesday 2nd April 06:44
jezzaaa said:
So my question was can was I right that the worn % be reset if the clutch hasn't been changed in order to conceal the actual wear? And I was asking how the clutch wear % is derived by the TCU...is it just based on time/mileage? or is there an actual thing that allows the car to measure the remaining material on the clutch plate (presuming not!)?
Ta,
J.
I've heard that it's easy to clock these cars but as for 'clocking' clutch life, I've never heard of that before. Not much help really, sorry. Might be worth calling a friendly indy? Be interested to know the answer though.Ta,
J.
Edited by jezzaaa on Tuesday 1st April 20:28
Batfoy said:
I've heard that it's easy to clock these cars but as for 'clocking' clutch life, I've never heard of that before. Not much help really, sorry. Might be worth calling a friendly indy? Be interested to know the answer though.
Ok thanks mate...Aldous is the guy who seems to know everything about these cars...maybe I'll send him a cheeky question jezzaaa said:
Batfoy said:
I've heard that it's easy to clock these cars but as for 'clocking' clutch life, I've never heard of that before. Not much help really, sorry. Might be worth calling a friendly indy? Be interested to know the answer though.
Ok thanks mate...Aldous is the guy who seems to know everything about these cars...maybe I'll send him a cheeky question jezzaaa said:
So my question was can the worn % be reset if the clutch hasn't been changed in order to conceal the actual wear? And I was asking how the clutch wear % is derived by the TCU...is it just based on time/mileage? or is there an actual thing that allows the car to measure the remaining material on the clutch plate (presuming not!)?
As I understand it the clutch wear is reset when a new one is fitted and then there is a measurement of 'free play' taken using the SD2/3 diagnostic system, and this calculates the wear.Voicey answers your question about 4 posts down this thread..
https://www.ferrarichat.com/forum/threads/f1-clutc...
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