Sudden lost of power at wheels
#1
Sudden lost of power at wheels
Hi everybody,
when accelerating hard on the full rev range, i have between 5000rpm and 5500rpm, a total lost of power at the wheel (@6lbs). My rev go straight from this point to 7000rpm in 1/4 of a second (until i have time to re-engage the clutch and release throttle). My gear lever stay in gear (as well as my gear ). I first tought my clutch was worn and/or cant handle the power (i saw on this forum that i'm on the limit and that it could happen) and was slipping.
I talked to a friend today and he says a smell of burn clutch should occur for sure if the clutch where slipping and there is absolutely NO SMELL.
i saw that "burned" clutch fluids and/or low level clutch fluids could provoke this (the opposite is said on another one). I did it and no effect at this time (only few miles done so maybe i need to wait).
i saw that input shaft seals could leak on the clutch and cause this kind of slippage, also a floating of the diaphragm. Somes are talking about physical adjusting of the pedal (helper spring or other).
from your expertise : is it possible for my clutch to slip without odor or noise? Do you have an idea related to our miatas historics?
thanks again. Love this forum and my miata.
when accelerating hard on the full rev range, i have between 5000rpm and 5500rpm, a total lost of power at the wheel (@6lbs). My rev go straight from this point to 7000rpm in 1/4 of a second (until i have time to re-engage the clutch and release throttle). My gear lever stay in gear (as well as my gear ). I first tought my clutch was worn and/or cant handle the power (i saw on this forum that i'm on the limit and that it could happen) and was slipping.
I talked to a friend today and he says a smell of burn clutch should occur for sure if the clutch where slipping and there is absolutely NO SMELL.
i saw that "burned" clutch fluids and/or low level clutch fluids could provoke this (the opposite is said on another one). I did it and no effect at this time (only few miles done so maybe i need to wait).
i saw that input shaft seals could leak on the clutch and cause this kind of slippage, also a floating of the diaphragm. Somes are talking about physical adjusting of the pedal (helper spring or other).
from your expertise : is it possible for my clutch to slip without odor or noise? Do you have an idea related to our miatas historics?
thanks again. Love this forum and my miata.
#2
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I don't think lack of smell or noise is necessary. I know noise is not present (from what I've experienced) during clutch slip, it just revs up very quick. I can't comment on smell, because I don't have a sense of smell :( You have all the evidence that your clutch isn't up to the task.
#4
There doesn't need to be a clutch burning smell since you aren't slipping the clutch for very long. I had similar issues when the CAS was dripping onto the bell-housing. Think about it, if the car is increasing in revs and not going faster, either the clutch or tires are slipping. Are you on the stock clutch?
#5
There doesn't need to be a clutch burning smell since you aren't slipping the clutch for very long. I had similar issues when the CAS was dripping onto the bell-housing. Think about it, if the car is increasing in revs and not going faster, either the clutch or tires are slipping. Are you on the stock clutch?
flyin miata one are out of budget with import charges and shipping. I could get a stage 2 "ilmotorsport" organic one for a descent price.
what do you think?it s a good option? "they say" nearly smooth as stock and applicable for boosted application, rallyx, track... etc
#6
https://www.ilmotorsport.de/shop/article_detail.php5?aid=5943&oid=1&depth=0&page=1& count=53&PHPSESSID=c2d16d8f177d5c0b6bd3a1e0538a9b2 e
^^^ You're asking about that clutch?
It's only rated to 185 Nm. It's not going to hold any more power than a stock clutch. I see no mention of it being suitable for a boosted application.
^^^ You're asking about that clutch?
It's only rated to 185 Nm. It's not going to hold any more power than a stock clutch. I see no mention of it being suitable for a boosted application.
#7
https://www.ilmotorsport.de/shop/art...d3a1e0538a9b2e
^^^ You're asking about that clutch?
It's only rated to 185 Nm. It's not going to hold any more power than a stock clutch. I see no mention of it being suitable for a boosted application.
^^^ You're asking about that clutch?
It's only rated to 185 Nm. It's not going to hold any more power than a stock clutch. I see no mention of it being suitable for a boosted application.
This sport clutch is rated for daily driving, autocross, trackdays and boosted applications, pedal feel will be slightly stiffer but almost not noticeable". I send them a mail they said 185nm is a very conservative value and it vould handle more... what do you think? Bad idea?
ps link to the english description:
https://www.ilmotorsport.de/shop/article_detail.php5?aid=6023&oid=1717&depth=3&page =0&count=6&PHPSESSID=76647d7852a611e5d67dd494b24b0 fed
#9
yes if you put the page in english you'll see this: "
This sport clutch is rated for daily driving, autocross, trackdays and boosted applications, pedal feel will be slightly stiffer but almost not noticeable". I send them a mail they said 185nm is a very conservative value and it vould handle more... what do you think? Bad idea?
ps link to the english description:
https://www.ilmotorsport.de/shop/art...7dd494b24b0fed
This sport clutch is rated for daily driving, autocross, trackdays and boosted applications, pedal feel will be slightly stiffer but almost not noticeable". I send them a mail they said 185nm is a very conservative value and it vould handle more... what do you think? Bad idea?
ps link to the english description:
https://www.ilmotorsport.de/shop/art...7dd494b24b0fed
185 Nm is 136 ft/lbs. For comparison, a flyin miata level 1 is rated for 318 ft/lbs.
The absolute mildest of boosted miatas will make more than that clutch is rated for. That company claiming that clutch is suitable for a boosted application is utter bullshit. Run far far away from them.
#10
If they were confident it would handle more it would be rated that way.
185 Nm is 136 ft/lbs. For comparison, a flyin miata level 1 is rated for 318 ft/lbs.
The absolute mildest of boosted miatas will make more than that clutch is rated for. That company claiming that clutch is suitable for a boosted application is utter bullshit. Run far far away from them.
185 Nm is 136 ft/lbs. For comparison, a flyin miata level 1 is rated for 318 ft/lbs.
The absolute mildest of boosted miatas will make more than that clutch is rated for. That company claiming that clutch is suitable for a boosted application is utter bullshit. Run far far away from them.
so finally i m looking an answer to one of these two questions: how much wheel torque have a low boost miata (red injectors, IC, 7psi boost)? How much clutch torque can handle a 185wheeltorque capable clutch?
#14
I said this because i saw stage 2 (from my understandment we are talking about kevlar type clutch) seems to fail (dont support any heating) and also have heat issues in themselves. So why not stage 3 ceramic?
#16
i bought a cheap 6puk (clutchxperts) and we will se whats happen! I know it rough but i m not using it on the city nor traffickjam.
#17
I received many mails from ilmotorsport from their technician... this person effectively told me that boost application was too much (despite what they mention on the description). They told me that there is on final process of developping a clutch specially for turbo miata that will accept HIGH torque with organic clutch. I already bought a 6puck but maybe it could help somebody somewhere (same taxes and fees problems)
#18
I received many mails from ilmotorsport from their technician... this person effectively told me that boost application was too much (despite what they mention on the description). They told me that there is on final process of developping a clutch specially for turbo miata that will accept HIGH torque with organic clutch. I already bought a 6puck but maybe it could help somebody somewhere (same taxes and fees problems)
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