Engine mountings

[Howard81]

Does it only do this at at idle at low RPM? If you give it a little bit more RPM then it goes away? My Sprint does that, and the engine mounts were new around the time I replaced NGU's..

[Cheesy]

Hi Howard - yes, it is definitely most noticeable at idle speed when everything rattles around!

[Cheesy]

Ok, I have tried to take a couple of photos, but they're not the easiest things to photograph!

Nearside one from above:

DSCF5365.JPG (46.91 KiB) Viewed 1943 times

Offside one from below:

DSCF5368.JPG (56.41 KiB) Viewed 1948 times

I know they're not the best photos, but Is that amount of "flex" in the rubber normal?

[JPB]

That's pretty much the shape they're meant to be. There are no restrictor brackets though, which would allow excess movement and also lower the position of the engine a little. (I mentioned those in that other engine mount thread and it turned out that Sprints didn't have them but as your engine mounts are the same as 1850 ones, it's possible that they ought to be present on the OHV models).

I'll pop up a photo of a new one shortly, so you can judge how odd the shape normally is......

Here you are:

[tinweevil]

That lower pic is a rear or gearbox mount

No it isn't. It is what is sold as a non-o/d manual gearbox mount, it's not correct but can be attacked with a grinder to fit that job. The points go to Howard who correctly spots a spitfire engine mount. Dolomite O/D and auto gearbox mounts are both very different.

The 1976 parts book shows 3 different engine mounts.
149934 - 1300/1500.
158016 - 1850
218559 - Sprint

The first two are indistinguishable from the parts book pictures and only 158016 is listed on Rimmers for all three applications. Whether they really were the same originally I guess is lost in the mists of time.

Restrictor brackets shown for 1850 only.

[1300dolly]

The lower pics IS a rear mount (andotehr applications) because the original type is NLA yes it does need trimming with a grinder same as if fitting it to a 1300FWD but it still is a rear mount, as tinman says the auto/ manual box mounts are different, infact very diferent with the aout ,ount being NLA.
The 13/500 and 1850 mounts are different (didnt i already say that?) although they look the same, as i said i dont know if the 1850 is suitable because i have always used the correct one as listed for the 1500 as as these are still avalible why use a different one.

P.s the mount in that pic is marshmellowed!

[triumphtoledo]

'1300dolly' is bang on correct. Dolomite 1300/1500 front engine mounts look identical but the rubber in the 1850 mounts is much softer, I presume because the engine is a smoother unit.

If you fit 1850 mounts (as I did once to my 1500), you will found that the engine will move from side-to-side by quite a bit.

R

[tinweevil]

(didnt i already say that?)

Yes you did, far from disagreeing with that part of your post I confirmed it with the part numbers but hey ho.
So it all starts to make sense. Howard replaced the mounts, Rimmers only sell one grade and that if their part numbering is accurate will be too soft for a 1500 hence the problem at the top of this thread.
Another part that we cannot get correct any more - t'riff.

[1300dolly]

Another part that we cannot get correct any more - t'riff.

From rimmers at least but plenty on the bay and avalible from good motorparts supplier shops across the country, I have never had a problem obtaining the correct mounts and nearly every dolly 1500 i have nad has had new mounts fitted.

[JPB]

The (Austin-Rover) boxes that these o/e mounts come in list the part as suitable for 1300, 1500 and 1850, meaning that garages would have fitted those to any car other than the Sprints and FWDs back then since there'd not have been a choice. Express Factors sold them through their dealership trade parts outlets so - possibly - the idea of there being a different grade for OHV cars is a more recent one?
One pair from this batch has been fitted to a 1500TC and they're fine on that, at least the owner hasn't been round to threaten me with a spanking so I'm assuming that they work for him.

[1300dolly]

John are you implying that the aftermarket marshmellow sold by some are the same grade of rubber as sold by rover!
I would guess that rimmers are selling 1850 mounts where as the rover ones are 1500.

[JPB]

That "aftermarket marshmallow" is a pukka, o/e boxed one and it's one of the same batch as the pair on my car. The surface cracks are only to the protective film and the rubber itself is fine, it came in the box which stated that the application was anything non-Sprint.

I haven't tested one other than in the cars mentioned, so can't comment on the grade, but they're plenty stiff enough and a perfect match, in terms of their rating, for the Stag subframe mount that's now the only alternative for the original - obsolete - gearbox mount on autos.
I had a pair that came from Rimmers about 12,000 miles after I'd bought the car, those were sent back and refunded, I wouldn't advise using them for a doorstop as they were separating and far too soft. But there's no need when there are o/e ones available that have been kept well and are proving durable so far.

[DoloWIGHTY]

Just to add here is another 1850 NOS one;



Not sure if you can see? It has the following written on it;

METALASTIK

17/1277
5

I wonder if the first numbers are a manufacture date?

But it may help if they all have these numbers to identify a 1850 one?

[JPB]

Part number and that Metalastic code number are common to all of the ones I have, as is the application (circa 1987, Express/Unipart) listed; 1300, 1500 & 1850.
All are code pink, red and green were the other codes for the various shore ratings available ISTR, but last time I saw a green one it was coming off to be replaced by a pink version which felt harder.

Three, taken at random from a stack of identical mounts in similar (some Rover Group, some Austin-Rover and some Unipart) boxes, all have exactly the same Maetalastic number as the one shown on yours, which refers to the form, but not the shore rating:


And the part number that comes up on the Express parts list for all Dolomites + 1500TC, not Sprint:

[1300dolly]

John, i think you misunderstood when i said about the marshmallow ones, I was saying that the ones from Lincon may not be up to standard* whereas the rover one and indeed the ones I have are metalastic which is a much stronger loger lasting rubber.

*Could someone confirm what the rimmer supplied mounts are made from?