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Engine mounts - the Teutonic_Tamer method . . .
Teutonic_Tamer:
--- Quote from: john_o on September 02, 2010, 01:11:29 pm ---Cheers shaun :happy2:
theory on amount of relative amounts of movement seems sound.
--- End quote ---
:happy2:
--- Quote from: john_o on September 02, 2010, 01:11:29 pm ---RE: silicon a cop out / porsche active mounts , I was making a joke that it was too easy for a man of your talents :grin:
--- End quote ---
Ahhhhh - - I often have a sense of humour failure! :ashamed:
--- Quote from: john_o on September 02, 2010, 01:11:29 pm ---and that you could have copied porsche
Porsche Active Engine Mounts linky
--- End quote ---
My RS4 has active engine mounts - as do virtually all longitudinal Audis. They are the bees knees! :star:
Teutonic_Tamer:
--- Quote from: RedRobin on September 09, 2010, 10:25:24 am ---
--- Quote from: Teutonic_Tamer on September 01, 2010, 01:03:53 pm ---
Now with correctly set adjustable ARBs and properly restrained ponies - there is no need for a Quaife.
Oh, final comment to report - I too now hear the 'whine' from my DSG in 2nd gear - I think this was also reported by RedRobin.
--- End quote ---
....I agree with your findings about the big benefits of these engine mounts but am surprised by your Quaife comment. I can see how the mounts would lessen the work the Quaife needs to do but I need convincing that a Quaife is of no benefit when such engine mounts are installed. Or am I taking your words too literally?
--- End quote ---
A Quaife, or any ATB diff, works by apportioning torque to the side which has the most grip.
On a 'normal car' (ie unmodified), loss of traction from one side is simply down to differences between the co-efficient of friction between the tyres (and therefore, the tyre with the lower friction, or grip, will spin and brake traction - with an open diff). The obvious cause is lack of wheel control from the suspension - correctly set ARBs will reduce this quite dramatically. But another cause of loss of traction is abrubt variations in radial/axial torque control - two fundamental causes - 1/ excessive play in the mounting of the powertrain assembly (the engine & tranny 'rocking' backwards and forwards around the same axis), and 2/ intermittant interuption of torque delivery by traction control systems (either by momentarilly killing the ignition, or by momentarilly braking driven wheels). By eliminating powertrain play, the transmission of torque is vastly more consistent (no more axle tramping or wheel hop).
So, with uprated engine mounts, AND correctly set ARBs, and turning off the ESP - the need for a Quaife or similar is VASTLY reduced. I have to try VERY hard - seriously hard, to get any cross axle loss of traction. But then I do run decent boots! :P
--- Quote from: RedRobin on September 09, 2010, 10:25:24 am ---Obviously it's reassuring and good to know you're hearing the same (or similar) 'whine' as on my car. There's absolutely no effect on performance that I can detect due to the 'whine'. Fortunately I'm someone like Mat who actually enjoys all the added sounds from the engine bay - As one becomes familiar it becomes easy to spot any changes in sounds which may herald a problem which needs solving. I absolutely hate quiet cars!
:happy2:
--- End quote ---
Usually, whining from gearboxes is NOT good - however, this seems to be a 'factory fitted' trait! :evilgrin:
Teutonic_Tamer:
--- Quote from: john_o on September 09, 2010, 10:36:09 am ---anyone got a pic of the mount split apart ?
I cant quite picture where the voids are and how the mount moves (car side vs engine side)
from this page
http://www.thsperformance.co.uk/product/FR3_TOP_Engine_Mounts_1.8_TFSI_2.0T_FSI%7CTDI_THSFR3-MK5TOP
I found, but it still doesnt quite make sense
does the other side just slot in ?
--- End quote ---
Those pictures just show the inner part of the tranny side mount removed from its outer casing. :wink:
Teutonic_Tamer:
Revo Carl & BDMAlex - maybe those THS FR3 lower rear mounts have a slightly smaller outside diameter than the OEM mounts. Or maybe I filled my new OEM mounts with too hard a grade of silicon - there was jack all movement in the centre bolt when nipped together - and NOTHING was able to compress them to shrink the diameter. :sad1:
And like I said, all of my local stealers were adamant that you could only install these lower rear mounts with the special tool to pre-shrink them. Maybe I just ought to take EVERYTHING the stealers say as BS - afterall, they also categorically stated that the R32 rear anchors could not go on the GTI - and many know the hot water that landed me in after I shared said info on the forum! :ashamed:
Hedge:
--- Quote from: Teutonic_Tamer on October 28, 2010, 11:51:51 am ---Maybe I just ought to take EVERYTHING the stealers say as BS - afterall, they also categorically stated that the R32 rear anchors could not go on the GTI - and many know the hot water that landed me in after I shared said info on the forum! :ashamed:
--- End quote ---
Well if all you are doing is regurgitating BS from elsewhere then maybe we should treat everything you say as BS.
:popcornsoda:
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