M42club.com - Home of the BMW E30/E36 318i/iS
DISCUSSION => Engine + Driveline => Topic started by: Genjinn on February 04, 2010, 05:57:39 PM
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OoOoO...k so we all know i have a bad rep at explaining things so ill try to explain this the best way i can....ok... my take off suxs, i don't think that when i take off from clutch to gas the engine will bog down as if its ready to stall out then the rpm will raise up according to pedal pressure so...picture it like this give gas to to full throttle while releasing clutch in a some what of the line motion, from idle (at 900 rpms..well mine) gas,off clutch, engine bog! then the engine will rev normally to were ever so why....and why cant i dump the damn clutch either? is it the tranny? the clutch? what?....i hope i explained that in a way you can understand cause quite frankly i suck at it....
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OoOoO...k so we all know i have a bad rep at explaining things so ill try to explain this the best way i can....ok... my take off suxs, i don't think that when i take off from clutch to gas the engine will bog down as if its ready to stall out then the rpm will raise up according to pedal pressure so...picture it like this give gas to to full throttle while releasing clutch in a some what of the line motion, from idle (at 900 rpms..well mine) gas,off clutch, engine bog! then the engine will rev normally to were ever so why....and why cant i dump the damn clutch either? is it the tranny? the clutch? what?....i hope i explained that in a way you can understand cause quite frankly i suck at it....
I have this exact same issue! I though that was just how this car was. If I rev it before I release the clutch, I get this insanely loud screech/grind. If I release the clutch first and then give it gas, it bogs down like hell and almost stalls. Makes for very embarassing situations.
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Did you bleed your clutch slave? Or as it replaced recently?
I had trouble with my old Nissan 200sx like that and it ended up being the slave was worn & letting the clutch bounce a little. Bleeding helped but replacing fixed it for me. I had a chirping/squealing too, it was the clutch slipping.
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Did you bleed your clutch slave? Or as it replaced recently?
I had trouble with my old Nissan 200sx like that and it ended up being the slave was worn & letting the clutch bounce a little. Bleeding helped but replacing fixed it for me. I had a chirping/squealing too, it was the clutch slipping.
I have not done that yet. I'll try that today and advise.
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see thats funny you said that i just got my clutch replaced by some "professionals" and i guess that they bleed it but i have the original flywheel that has like over 200k miles on it i don't know how much that would matter but the flywheel is getting replaced very soon for on of them there light ones for optima speed
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The flywheel's age doesn't matter, but the surface must be clean & true for smooth clutching. The standard dual-mass flywheel shouldn't be resurfaced. Might be that your flywheel isn't 100% trued or the clutch is glazed. I'll hope that your clutch slave has a bubble since that's the easiest & cheapest one to fix.
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It's called Dual Mass Flywheel-itis. All US M42's have this disease from the factory.
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i hear about all these problmes people have but none of mine have these issues. i can slip the clutch in my 4door and take off from idle.
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So the removal of the disease know as THE DUAL MASS FLYWHEEL OF RESTRICTION! ill have a normal 5 speed capable of being dump out of first gear and have a off the line rubber burning take off that is nothing short of GREATNESS!
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mine can do that with the dual mass. maybe i just have a healthier than usual 270k+ mile 318
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So the dual-mass flywheel causes the engine to bog and the clutch to screech and grind??
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Torque on the vehicle is fair for the time of production and weight of the vehicle. However, you can throw on a 12lb FW and effective eliminate 13lbs of unnecessary rotational mass.
"Unnecessary" is a matter of opinion though. BMW equipped the dual mass to the 318 because of the harsh engagement and idle chatter that occurs as the result of a single mass.
You should be able to spin tires on the DMFW. You may have some sort of intake restriction or throttle cable that is out of adjustment. Even fouled plugs or cam timing might be off. There are a number of variable here.
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Oh...well am getting the 12lb flywheel anyway just cause what it does but i will look at all the other matters that may lead to my normal issue. hmm maybe its the spark plugs cause i haven't changed them sense i got the car but it is my next change up too but how can i find out about the throttle cable or seeing if the cam timing is off o wise dvmotor.
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gotta be quick with the shifts when you got a ltw fly installed. revs drop fast.
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well i have a b&m short shifter so i can shift pretty quick so any ideal on which ltw fly i should get?
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ive heard that the ltw flywheels are a bitch to drive in traffic.
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well is there anything close to being light but not with the issue that a light flywheel brings?
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well is there anything close to being light but not with the issue that a light flywheel brings?
Not really. BMW designed it in such a way to make it easy to drive without snapping your limbs off trying to catch up to the engine winding down all the time ... anything lighter and I'm afraid you're gonna get the same symptoms ... that said, there really isn't a 'heavy ltw flywheel'; nobody makes that as it would defeat the purpose of changing the stocker
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well i guess ill run with the the light anyway the pros out weight the cons
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Bled the slave cylinder this afternoon and same shit. Sounds like the gears are grinding but it could also be the clutch slipping; either way, it's annoying.
Any moar tips?
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Not really. BMW designed it in such a way to make it easy to drive without snapping your limbs off trying to catch up to the engine winding down all the time ... anything lighter and I'm afraid you're gonna get the same symptoms ... that said, there really isn't a 'heavy ltw flywheel'; nobody makes that as it would defeat the purpose of changing the stocker
There actually is a happy medium. There is a SMFW that came on the non-a/c euro cars. IIRC it's roughly 18lbs.