ausmini :: View topic - Engine to body vibes

ausmini https://www.ausmini.com/forums/

Engine to body vibes https://www.ausmini.com/forums/viewtopic.php?f=2&t=44639	Page 1 of 2

Author:	drmini in aust [ Fri Aug 08, 2008 8:22 am ]
Post subject:	Engine to body vibes
Barney (1293A+) has recently started putting more vibes into the body at different RPM, this is most noticeable in the current cold weather. It's worst at about 1500. Over 3000 it's fine. Where once only the driver's door lock linkage vibrated, now you can feel it in the steering wheel, parcel shelf, floor, etc. Clutch feels normal and the vibe periods are there even with the pedal in... I suspect the PO fitted antique engine mounts which are now rock hard in cold weather, so I'll change `em soon and let y'all know. Other theories??

Author:	Anto [ Fri Aug 08, 2008 8:35 am ]
Post subject:
What about exhaust mounts? Although that usually induces more of a drone than vibration, if we were to get technical.

Author:	Blokeinamoke [ Fri Aug 08, 2008 8:36 am ]
Post subject:
You have yourself a nice harmonic happening there. On one my cars I bolted a heavy metal block about 3 inchs before the flex point that was vibrating- but with a mini that would be entire car.

Author:	drmini in aust [ Fri Aug 08, 2008 9:00 am ]
Post subject:
Anto wrote: What about exhaust mounts? Although that usually induces more of a drone than vibration, if we were to get technical. It's a remote change box, with standard Cooper S ex mounts, no problems there... it doesn't rely on the exhaust pipe to be a torque arm (like 850 and rodchange do).

Author:	sports850 [ Fri Aug 08, 2008 9:53 am ]
Post subject:
Does it do it when sitting at revs or only when driving ? How long since it's had a wheel alignment or balance ?

Author:	simon k [ Fri Aug 08, 2008 10:07 am ]
Post subject:
could the harmonic balancer be on it's way out? I get more vibration with my new motor than I expect, and I wonder about my hb

Author:	pristic [ Fri Aug 08, 2008 11:31 am ]
Post subject:
+1 for harmonic balancer if it does it stationary while revving and while driving. If its only while driving I would look at the engine steady - do you have bottom and top steadies? Mine started vibrating like yours and its teh clutch side top engine steady (not tight anymore (rubber collapsed?) Pete

Author:	drmini in aust [ Fri Aug 08, 2008 11:34 am ]
Post subject:
Ian it does it sitting still, in neutral or in gear with clutch in, doesn't matter. It's rpm related. As I said it's worst when weather is cold.. like lately. Simon, I'll check the H/B today, but it's only done 10,000KM since I fitted it and it had no cracks in the rubber then.

Author:	simon k [ Fri Aug 08, 2008 11:51 am ]
Post subject:
drmini in aust wrote: Simon, I'll check the H/B today, but it's only done 10,000KM since I fitted it and it had no cracks in the rubber then. so you're saying cracks in the rubber isn't a good thing then? (mine is the best of a bad bunch) what are our options for newies/repairs/replacements? are they balanced independent to the motor?

Author:	drmini in aust [ Fri Aug 08, 2008 11:55 am ]
Post subject:
If rubber is cracked it's on the way out. Bad news on a 1275 or 1098. New ones are NLA I think, but Ross Tuffbond in Blacktown can reco them. Or, you could use a Romac one (made in Brissy). Or, you could get an Exxy one from MiniMania. Yes they are balanced by the maker/repairer, GR never balances them he says.

Author:	simon k [ Fri Aug 08, 2008 12:21 pm ]
Post subject:
drmini in aust wrote: Or, you could use a Romac one (made in Brissy). I'm looking for a price... Fabre says $295 my engine machinist says Romac are in Wagga, www.romac.com.au says they are in SA, and you say they are in Brissie - elusive bunch

Author:	simon k [ Fri Aug 08, 2008 12:30 pm ]
Post subject:
drmini in aust wrote: Ross Tuffbond in Blacktown can reco them. $154 for a 2 piece S type HB

Author:	drmini in aust [ Fri Aug 08, 2008 12:38 pm ]
Post subject:
simon k wrote: drmini in aust wrote: Ross Tuffbond in Blacktown can reco them. $154 for a 2 piece S type HB Wombat got a 1 piece one done there... BTW just checked mine, the rubber is still fine..

Author:	simon k [ Fri Aug 08, 2008 12:54 pm ]
Post subject:
drmini in aust wrote: simon k wrote: drmini in aust wrote: Ross Tuffbond in Blacktown can reco them. $154 for a 2 piece S type HB Wombat got a 1 piece one done there... the 1 piece is probably preferable for the 'race' motor isn't it.... the one on there now is 1 piece, but I need the 2 piece done for the S motor down the track, so I got the price for it edit: price is the same anyway

Author:	AEG163job [ Fri Aug 08, 2008 1:18 pm ]
Post subject:	Re: Engine to body vibes
drmini in aust wrote: Where once only the driver's door lock linkage vibrated, now you can feel it in the steering wheel, parcel shelf, floor, etc. definitely in the "thrush" category. Checked the engine steady bushes? Rather obvious but.

Page 1 of 2	All times are UTC + 10 hours
Powered by phpBB® Forum Software © phpBB Group http://www.phpbb.com/