Anybody fancy stiffer engine mounts? (T16)

chazjenkins · Post by **chazjenkins** » Thu Feb 01, 2007 11:17 pm

Been doing a bit of reading/research on engine mounts and suchlike.
Came across a post from Paul (xr4x4) saying that he fills the gaps in his engine mounts to stiffen them up with silicon.

We know how easy it is to rip an engine mount in half or whatever, so what I was proposing is that if you send me your engine mounts - I can fill the gaps with a much stronger polyurethane.

It's only an idea, haven't even had a test subject yet.
I will try to get the finish of the end product as good as I can, but the polyurethane is very very messy to work with - so as long as you're not expecting bling, then you won't be disappointed.

Cost = Â£FOC, but covering postage would be appreciated.

Let me know if you are interested!

Si · Post by Si » Fri Feb 02, 2007 12:17 am

It won't help the front one, this one is the first to go as its under tension and simply gets ripped apart under torque.

Neil F · Post by **Neil F** » Fri Feb 02, 2007 12:27 am

Hi,

was thinking about the mounts and developing a cambelt end mount and a gearbox end mount to 'hang' the engine, then forward and aft stabiliser mounts possibly along with an engine damper, the problem is I doubt anyone would want to spend the time or money on a kit

.

Cheers

Neil

Drew · Post by **Drew** » Fri Feb 02, 2007 12:52 am

Neil F wrote:and a gearbox end mount to 'hang' the engine

all of the K series PG1's had that gearbox mount and all 200's have the bolt holes for it.

620 has the extra stabiliser on the cambelt end mount. all that would be needed is to weld an extra bracket on the turret for the other end.

if you wanted the max you could also add a 620 sump and the extra mount on there to the subframe.

Drew

xr4x4 · Post by **xr4x4** » Fri Feb 02, 2007 1:09 am

its not just the engine mounts that need modding.. its the stablizer bars too..

Grant620 · Post by **Grant620** » Fri Feb 02, 2007 1:24 am

Pretty much all you need is available from the Rover stable...

Jonny 5 · Post by **Jonny 5** » Fri Feb 02, 2007 11:03 am

Swap the front block of rubber (even when solid Roversport it still rips out) and use a donut type bush thats a full metal shell.

A mount on the gearbox mount be a good idea too.

Imran · Post by **Imran** » Fri Feb 02, 2007 11:25 am

hmm, don't you get lots of vibrations coming through with solid engine mounts?
what are the main advantages to this anyway?

T16 Westfield · Post by **T16 Westfield** » Fri Feb 02, 2007 11:30 am

Stiffening up all the other engine mounts will reduce the load on the front one as the powertrain rock will be reduced which should mean it will last longer!

However the cavities are there for a reason, mainly NVH (Noise Vibration and Harshness) and if you fill them with something you will get increased transmission of noise and virbration into the body structure from the engine and gearbox and into the cabin area.

You can tune it - I suspect silicone wouldn't be as bad as polyurethane as it isn't as stiff.
None of this is a problem however if you are running a moddified car and you are not concerned about NVH!

Jan

Imran · Post by **Imran** » Fri Feb 02, 2007 11:34 am

T16 Westfield wrote:Stiffening up all the other engine mounts will reduce the load on the front one as the powertrain rock will be reduced which should mean it will last longer!

However the cavities are there for a reason, mainly NVH (Noise Vibration and Harshness) and if you fill them with something you will get increased transmission of noise and virbration into the body structure from the engine and gearbox and into the cabin area.

You can tune it - I suspect silicone wouldn't be as bad as polyurethane as it isn't as stiff.
None of this is a problem however if you are running a moddified car and you are not concerned about NVH!

Jan

Good for race cars or a B car then perhaps...... don't think I could take it as a daily driver

T16 Westfield · Post by **T16 Westfield** » Fri Feb 02, 2007 11:34 am

If you run "solid" engine mountings (like solid nylon - no polymer whatsoever) you run a risk of fracturing body structure around the engine mounts - it also can make the car "grabby" as there is no compliance in the system which would have been taken into account when idling/fueling from pull off was all set and the clutch weight/strength of springs etc.

Jan

xr4x4 · Post by **xr4x4** » Fri Feb 02, 2007 11:36 am

bathroom sealant FTW..!!111!!!

joke..!

T16 Westfield · Post by **T16 Westfield** » Fri Feb 02, 2007 11:46 am

Don't knock it - there are a million and one uses for bathroom sealer

C2K · Post by **C2K** » Fri Feb 02, 2007 1:37 pm

Yeah like blocking the leaky boot vents on Mk2 200's.

wilky · Post by **wilky** » Fri Feb 02, 2007 4:28 pm

i have made my own engine mount's frount and back
i'l see if i can get a pic up

HA54SYM · Post by **HA54SYM** » Sun Feb 04, 2007 10:01 am

Would any rubber people be willing to copy the Roversport ones?

I have a full new set spare for dimensions etc.

Or could we not find out who supplied the engines mounts to Rover and get a group buy of the roversport type, as they probably still have the moulds, and ae also are probably a UK company?

Dave

chazjenkins · Post by **chazjenkins** » Wed Feb 21, 2007 7:21 pm

So, my friend needed a rear engine mount - So I offered him one and also to stiffen it up for him.

I started with this:

I cleaned it all with a solvent and primed where I was going to fill with the polyurethane.

I filled up with gaps and capped it off neatly as possible, resulting in this:

The polyurethane is a little bit darker than it is usually due to be not being fully set yet.
Not a bad effort I suppose.

xr4x4 · Post by **xr4x4** » Wed Feb 21, 2007 7:29 pm

what i did on mine.

chazjenkins · Post by **chazjenkins** » Wed Feb 21, 2007 7:31 pm

I bet it was a little bit trickier using silicon?

Also, trying not to gag on the smell of it too :puking:

xr4x4 · Post by **xr4x4** » Wed Feb 21, 2007 7:44 pm

chazjenkins wrote:I bet it was a little bit trickier using silicon?

dunno... coz i havent done it any other way.

chazjenkins · Post by **chazjenkins** » Wed Feb 21, 2007 7:51 pm

What I meant was, the fact I could cut a nozzle the size of a Â£2 coin and just pump it out and it was quite easy to work into place.

Whereas silicon is a little more runnier and I imagine you can't pump it out at a great rate?

xr4x4 · Post by **xr4x4** » Wed Feb 21, 2007 7:57 pm

yeah... small nozzle... takes a while.... ages to dry also..

Leo · Post by **Leo** » Thu Feb 22, 2007 12:29 am

Did that on mine AGES ago, have since pulled various engine bits apart and found the bit I added to be pretty loose inside the original mount rubber. Maybe it's cos I didn't leave it to set for long enough or maybe it just doesn't work, I'm not sure :-/

Jonny 5 · Post by **Jonny 5** » Thu Feb 22, 2007 12:34 am

That mod is great for compression, but thats not what happens when the engine torque, it just pulls it apart sooner or later.

Needs a redesign such that something stops the mount lifting under power.

chazjenkins · Post by **chazjenkins** » Thu Feb 22, 2007 12:36 am

Yeah, I get what everyone has said.
Just thought I'd throw up a pic of what I done.