andrewturner
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| posted on 27/11/08 at 09:43 AM |
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Engine mountings
Please let me know what you think of my engine mountings. Are they to horizontal?
 
Rescued attachment 27112008.jpg
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speedyxjs
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| posted on 27/11/08 at 09:46 AM |
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It the engine straight? It looks like its leaning to the right in the pic
How long can i resist the temptation to drop a V8 in?
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andrewturner
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| posted on 27/11/08 at 09:52 AM |
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It is about 1 deg to the right only because the gearbox is lying on a crossmember at the moment. But we are splitting hairs. consider it straigh.
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Thinking about it
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| posted on 27/11/08 at 09:52 AM |
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I think too horizontal.
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maartenromijn
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| posted on 27/11/08 at 09:55 AM |
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I'd say they are too horizontal. Bear in mind that they will not only have to take the rotation forces, but also the vertical loads. Imagine
what happens if you hit a bump at high speed.
BLOG: http://thunderroad-super7.blogspot.com/
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02GF74
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| posted on 27/11/08 at 10:36 AM |
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I would agree - 45 degree would be better.
The more horizontal you make them, the more shear force you place on the rubbers; also there is less support of the weight so if the rubber lets go,
the engine drops down onto the tarmac.
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speedyxjs
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| posted on 27/11/08 at 12:00 PM |
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This is what mine are like:
 
O/S Engine Mount
They are about 40 degrees
How long can i resist the temptation to drop a V8 in?
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mr henderson
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| posted on 27/11/08 at 12:43 PM |
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One of those 'if it doesn't look right, it probably isn't' situations. Presumably you are happy with the engine height, so
it's going to be a question of bringing the chassis part of the mounting system closer to the engine, so that the mounting itself can be
shortened and the angle increased
John
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andrewturner
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| posted on 27/11/08 at 03:19 PM |
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I think this should work
 
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907
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| posted on 27/11/08 at 05:51 PM |
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Hi.
I think I would angle the lower end of the tube so the rubber mount was horizontal.
Less stress on the rubber that way.
Cheers
Paul G
 
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maartenromijn
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| posted on 27/11/08 at 06:37 PM |
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I have seen the solution by 907 before, in 'the book' there is an example as well!
Seems to be a good solution. Also I think the angle as per your latest pic seems to be better.
BLOG: http://thunderroad-super7.blogspot.com/
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bimbleuk
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| posted on 27/11/08 at 07:27 PM |
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The last pic looks much better and having the rubber at angle cuts down on a lot of side movement which is when it'll be under considerable
load.
If you see the RAW engine mounts don't copy them as I've managed to bend mounts on both sides. They use flat plate but not fully boxed
which is crap to be honest.
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andrewturner
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| posted on 27/11/08 at 08:11 PM |
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I made the mounts at an angle because I was told that if the rubber is mounted flat it is always under compression and gives no
'flex" or movement. also if you take a look at any road car all have the engine mounts at an angle
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