Why can't we get someone to make a modified stock mount? Is it really that hard to replicate a similar durometer material? I think I recall seeing someone weld plates the the bottom of the ones that always failed, looked like a pretty good solution.
335iS Engine Mount Sudden Price Reduction $240...WTF?
- Thread starter matreyia
- Start date
My mistake, I thought they were still fluid filled - didnt realize they're solid rubber. Is it not the same mount the 1M and z4 35is use though? Because as noted by @fmorelli it still compresses after enough use like the regular fluid filled mounts, and I think the whole <10 durometer stiffer thing is still a pricey purchase even so.
I just think bang for buck you're still better off with staying OEM for ~60/mount or switching to an aftermarket design if needing a stiffer mount. For what would be $600+ to run both as iS mounts/solid rubber mounts theres just better options out there from a performance standpoint imo. I guess you could run one iS mount and the passenger side 034 mount since I believe they've been redesigned if you wanted a cheaper all-rubber solution, but then you still risk our hot ass engines slowly compressing the rubber mounts the same as factory.
Ben Liaw @ Rogue Engineering is the only guy I know that has gone to the effort to create better rubber mounts for BMW drivetrains. Everyone else does them in poly - far cheaper to produce, mostly because of construction cost. His trans mount for example: https://www.rogueengineering.com/Rogue-Engineering-Transmission-Mounts_p_137.html
I've known Ben for ... cough cough ... 20+ years, and his products are home runs. I'll drop him a line and see if I might not be able to get him to join up here, or maybe give us some feedback.
Filippo
I've known Ben for ... cough cough ... 20+ years, and his products are home runs. I'll drop him a line and see if I might not be able to get him to join up here, or maybe give us some feedback.
Filippo
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https://www.getbmwparts.com/oem-parts/bmw-insulator-22116793240
$240 from the BMW dealers discounting online. But who knows how long that will go on.
Filippo
$240 from the BMW dealers discounting online. But who knows how long that will go on.
Filippo
Ben is a cool guy,I use his trans mount also,was just there few weeks ago doing some inhouse work and chit chatting with him.he moved into bigger space across the way from his previous shop.he has the coolest Samoyed dog.
I might have to pick one up at that price.......so to be clear, the upgraded 335is mount is for the right (passenger side) correct? And then you can just use the regular 335i mount for the left (driver side) which is only $93.20 on the same site? And so the 335is driver side mount is the same thing as the regular 335i mount? I was wondering because of the old power steering pulley hitting the subframe problem on early cars like mine. It seems like to prevent this from happening, you would want the stronger mount on the driver side where the ps pulley is if I'm not mistaken?
Also, I know some single turbo kits come with an upgraded engine mount, If I upgrade to hybrid twins, will the 335i/335is mounts be sufficient?
Also, I know some single turbo kits come with an upgraded engine mount, If I upgrade to hybrid twins, will the 335i/335is mounts be sufficient?
Ben Liaw's comment back to me this morning was that he recommends treating the motor mounts as a maintenance item, replace every 3-5 years with Corteco, which is OE.
Filippo
Filippo
Jason of Propulsive Dynamics upgraded his passenger side mount to 335iS for his single turbo car.
Yes, the driver side is the normal 335i mount. Only the passenger side is reinforced. I replaced my driver side with a new OE BMW driver side mount and filled it with NASCAR 3M polymer to stiffen it up a little. Works like a charm...got the idea from YouTube channel Vehicular DIY.
I have two of the passenger side 335is mounts on my 08 335xi. Using the right side mounts on both the left and right side on my engine. No complaints.
Does anyone know if the passenger side and drivers side mounts have different stiffness grades on the non-is 35i?
Some places have different part numbers and prices. Some say just use one part for both. I believe the passenger is supposed to be firmer.
On that same note, Vehicular DIY uses dual drivers side mounts, filling the one side with 3M window weld. Aside from adding the WW does anyone have any reason to believe running dual drivers mounts (cheapest) would result in either premature failure or just not fitting at all?
Understood, thanks. I know there is a heat shield on the OEM part he transfers over. Not sure if that helps in any way if the underlying assumption is the chemical composition and durometer of both sides are equal (not including the -IS mount). Not trying to cheap out here considering the IS mount and the OEM cortec branded one from FCP are very similar in price ATM.
Just heat shield but if not going is you can get OEM proper kit for 70 bucks so why bother I believe 240 is 335is and 744 is reg passenger. But their is no savings in going ruth two driver side or maybe 5 or 10 dollars
That is as you say, only and 'assumption'. I imagine the stock 335i passenger's higher price is due to more than just a little flap of grey plastic. The Vehicular DIY guy that bought the cheap driver side mounts had them fail VERY quick...like weeks after install so he had to buy replacements and fill them with 3M polymer to reinforce them. In contrast, normal passenger mounts for the 335i are good for years and years... just think about that before attempting to buy the cheapest thing thinking that it's the same thing as the driver side. There is a reason why the passenger side is more expensive...and I am talking about the normal 335i passenger side mounts, NOT the iS mounts.
Fair point and most likely what I am doing is just buying the Corteco set from FCP with the new hardware for about $150 ($100 for passenger $40 for driver $15 for hardware.
I have an extremely high mile vehicle that I was tracking down the source of a broken aluminum bellhousing bolt (found in driveway) which lead me to inspection of my motor mounts. They are undeniably the originals so its not surprising it failed. What I am concerned to find is if it is possible that a collapsed mount would result in a broken bolt after enough abuse and heat cycles. Guess I will be doing the mounts AND the oil pan gasket while the subframe is dropped.
You have bellhousing bolt broke off? Here are possible causes in my opinion.
1. too much power and not enough foundational mods like structural reinforcments... the sheering force of the engine to the trans connection will break bolts...
2. add more stress to that equation if the engine mounts are shot...then you literally are doing like if you took a soda can tab and bending it until it broke.
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