Hello all,
I've tried to do some research to answer my questions before resorting to creating a thread and feeling like I am beating a dead horse... but with all of the new information/products that are constantly being updated I felt as though reaching out for some help would be my best bet. I'm in the market currently for replacing the clutch in my FBO + Inlets/Outlets vehicle as it has essentially roasted the stock clutch that has been in the car for around 50k miles. Day to day driving is fine, but any time I decide to go WOT in 3/4th gear, the clutch slips (much more in 4th than 3rd [havent wanted to try it in higher gears]). The vehicle did this previously during some intermittently hard 1-2-3 shifts back before I had done FBO, so I have to admit I should have seen this coming one I decided to up the power level. So, since I am officially in the market, I'd like to ask some questions that I'm sure may be redundant--so please forgive me if they are!
The car in question is a 2007 coupe and makes (ballparking this) around 400/460. I've read online that the pre-2009 models used a 6-bolt dual-mass flywheel. I've seen it recommended to replace the DMFW as the springs can wear out. The DMFW has ~50k on it with most of them being gentler miles. I don't have any odd vibrations (typical of springs wearing out) while driving so I am assuming that it is in good condition. Of course, I would love to upgrade to a smfw but can't justify the pricing at this point in time. Is it required to replace the DMFW when replacing the clutch with OEM styled clutch kits? If not, does the DMFW need to be resurfaced? Of course, resurfacing a SMFW is expected, but I have read that DMFWs are unable to be serviced.
The stipulation I have currently is that I chose to rebuild my twins as the run well, but have major wastegate rattle. I'll be running this setup for a while as I'm pretty much invested into it at this point. What does catch my eye though is the price of single kits (log manifolds) lowering as more competition arises, and I find myself questioning if the 335is/550i clutch's specs. They are hard to pinpoint (I have seen 500-600tq on forum posts) as BMW doesn't give an official rating. I know that the 335is/550i clutch will withstand the abuse of maxed out turbos on e85, but would it also withstand per say a single kit pushing 550/600tq should I want to go that route in the future? More or less I am looking for a dependable and streetable clutch that can handle the power levels that I am currently at, as well as where I may end up down the road.
Aside from advice on that specific clutch kit - which seems to be the go-to for most owners, are there any other fairly priced setups? I am a current college student and looking to get the best for what little money I have to allocate away from tuition. With that said though, I don't want to cut any corners on the vehicle and have it prone for issues in the future. Are there any other recommended parts to upgrade while I am replacing the clutch? I understand that the kit comes with a ToB, various bolts, etc.
Should I choose to go with a 335is/550i clutch it will most likely be through FCP Euro as you really cannot beat that lifetime warranty. They do have two different clutch kits for the 335is/550i though. One is OE BMW @ $460 and the other is LuK @ $406. I've read that LuK also OE quality. Has anyone had experience with either or a recommendation. Is there truly a difference between the OE BMW 335is/550i Clutch Kit vs the LuK 335is/550i Clutch Kit? Truthfully my instincts (and wallet) tell me that the LuK is the better buy, and with the lifetime warranty I wont have an hassles if something fails unexpectedly. I could also allocated that extra $55 or so to anything else that needs to get done (much like my oil pan gasket and rear main seal...).
Thanks in advance for those who read this and reply!
I've tried to do some research to answer my questions before resorting to creating a thread and feeling like I am beating a dead horse... but with all of the new information/products that are constantly being updated I felt as though reaching out for some help would be my best bet. I'm in the market currently for replacing the clutch in my FBO + Inlets/Outlets vehicle as it has essentially roasted the stock clutch that has been in the car for around 50k miles. Day to day driving is fine, but any time I decide to go WOT in 3/4th gear, the clutch slips (much more in 4th than 3rd [havent wanted to try it in higher gears]). The vehicle did this previously during some intermittently hard 1-2-3 shifts back before I had done FBO, so I have to admit I should have seen this coming one I decided to up the power level. So, since I am officially in the market, I'd like to ask some questions that I'm sure may be redundant--so please forgive me if they are!
The car in question is a 2007 coupe and makes (ballparking this) around 400/460. I've read online that the pre-2009 models used a 6-bolt dual-mass flywheel. I've seen it recommended to replace the DMFW as the springs can wear out. The DMFW has ~50k on it with most of them being gentler miles. I don't have any odd vibrations (typical of springs wearing out) while driving so I am assuming that it is in good condition. Of course, I would love to upgrade to a smfw but can't justify the pricing at this point in time. Is it required to replace the DMFW when replacing the clutch with OEM styled clutch kits? If not, does the DMFW need to be resurfaced? Of course, resurfacing a SMFW is expected, but I have read that DMFWs are unable to be serviced.
The stipulation I have currently is that I chose to rebuild my twins as the run well, but have major wastegate rattle. I'll be running this setup for a while as I'm pretty much invested into it at this point. What does catch my eye though is the price of single kits (log manifolds) lowering as more competition arises, and I find myself questioning if the 335is/550i clutch's specs. They are hard to pinpoint (I have seen 500-600tq on forum posts) as BMW doesn't give an official rating. I know that the 335is/550i clutch will withstand the abuse of maxed out turbos on e85, but would it also withstand per say a single kit pushing 550/600tq should I want to go that route in the future? More or less I am looking for a dependable and streetable clutch that can handle the power levels that I am currently at, as well as where I may end up down the road.
Aside from advice on that specific clutch kit - which seems to be the go-to for most owners, are there any other fairly priced setups? I am a current college student and looking to get the best for what little money I have to allocate away from tuition. With that said though, I don't want to cut any corners on the vehicle and have it prone for issues in the future. Are there any other recommended parts to upgrade while I am replacing the clutch? I understand that the kit comes with a ToB, various bolts, etc.
Should I choose to go with a 335is/550i clutch it will most likely be through FCP Euro as you really cannot beat that lifetime warranty. They do have two different clutch kits for the 335is/550i though. One is OE BMW @ $460 and the other is LuK @ $406. I've read that LuK also OE quality. Has anyone had experience with either or a recommendation. Is there truly a difference between the OE BMW 335is/550i Clutch Kit vs the LuK 335is/550i Clutch Kit? Truthfully my instincts (and wallet) tell me that the LuK is the better buy, and with the lifetime warranty I wont have an hassles if something fails unexpectedly. I could also allocated that extra $55 or so to anything else that needs to get done (much like my oil pan gasket and rear main seal...).
Thanks in advance for those who read this and reply!