a question about engine mount sizes.

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AnotherTim
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a question about engine mount sizes.

Post by AnotherTim » Sat Sep 30, 2017 12:30 pm

I have a straight up simple question and would really appreciate it if anyone can just supply a straight up answer. That would be very helpful to me. There is no need to reply to this if you haven't got an idea about the measurement I am asking about, and suggestions about measuring things will not serve any purpose.

The correct mount (rubber bush not the bracket) for an Essex in an SE5a... how thick should the rubber donut section of the mount be on a new one please? Approximate will help if not a specific.

The tallness of the rubber cylinder, not the circumference.

Thanks.



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a question about engine mount sizes.

Post by oilrag » Sat Sep 30, 2017 12:58 pm

My gtc measures 37mm ,my 5a measures 38mm.


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a question about engine mount sizes.

Post by AnotherTim » Sat Sep 30, 2017 1:19 pm

Cheers Oilrag. That's good to know but I'm guessing those are measurements taken off ones already in use and in position. What I'm hoping to find out is what a fresh, unused one would be before it's been used.

I'm trying to determine if there is any crush once in use, so I really want to know, if possible, what a box fresh pair would be.

My boxfresh ones are 41mm tall, and I've had the engine as high up as possible, and the bracket off, and we can't get the buggers in. The really old ganky ones coming out are about 35mm. Can't decide if we should persevere or try and track down thinner mounts. 41mm is all I have found.



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a question about engine mount sizes.

Post by Oaksey » Sat Sep 30, 2017 1:37 pm

They should be 37mm. Most for sale now are between 41 and 45mm which can work depending on the exhaust setup but usually don't as you're finding.
Have you tried raising the engine then removing the cast engine mount from the block so you can swap the rubber on the bench? That's how I do it and I find it normally takes about 15 minutes a side all in.


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a question about engine mount sizes.

Post by oilrag » Sat Sep 30, 2017 1:49 pm

I have these in gtc ,


http://www.shop4autoparts.net/parts/Eng ... ne-gearbox
slightly softer ,therefore less harsh
from a v8 rover/landrover fitment,so up to job re weight etc.


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a question about engine mount sizes.

Post by AnotherTim » Sat Sep 30, 2017 1:51 pm

Yep, we tried that Oaksey. Had the metal bracket off and out. We couldn't get the combined bracket/bush back in though. I tried reassembling bush and bracket as loose items next to the block but still couldn't get it back in place. Tubular manifold doesn't help, but actually it's the gap between chassis mount and block that we can't tease open enough. Next attempt, another day, will have to be rocker covers off in the hope we can raise the engine a bit more without them, and also exhausts off. Pain in the Franklins really just for a pair of bloody engine mounts, but the one we had off today (drivers side) was absolutely shot. Two separate pieces that just rest on each other.

Cheers for the reply.
Last edited by AnotherTim on Sat Sep 30, 2017 2:39 pm, edited 1 time in total.



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a question about engine mount sizes.

Post by CNHSS1 » Sat Sep 30, 2017 2:07 pm

Poly ones from Corky thread, 42-43mm nominally and don't say or crush like stock ones. 10mm studs
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AnotherTim
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a question about engine mount sizes.

Post by AnotherTim » Sat Sep 30, 2017 2:25 pm

Thanks man, that's really useful. It means that it ought to be possible to get these in, and if those don't even crush then it ought to be possible for the engine to be that amount higher up when sat on the bushes.

My new bushes have studs that are two or three threads longer than the ones coming out. This is going to come down to grabbing every micron we can, and I am suggesting we grind a few mm off the length of each stud. It's all largely redundant material. My buddy is fighting that idea and saying it a) wont make a difference and/or b) might render them useless. For me, every little counts, and if we can win a couple of mm off the overall length of this thing it might just be persuaded in.

Had to stick it all back together for now though as we were out of time. Had to drive home on (two mounts, but) one very obviously broken two piece engine mount.

I might have another look around for an alternative mount from another vehicle with the same stud measurements in the meantime.



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Post by AnotherTim » Sat Sep 30, 2017 2:38 pm

There's also these from QuintonHazel...

http://www.ebay.co.uk/itm/Front-Engine- ... Swt5hYdOsQ

Which are 35mm, as my used/crushed ones are. I don't understand why they are selling them in fours though, so I assume there must be a mounting set-up in some cars that take four mounts... and that being the case, two of them probably wouldn't be tough enough... but also... if they start out at 35mm and then crush, my engine wont be where it should be. Mine are 35mm now, but they look like they've been in there for decades.



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a question about engine mount sizes.

Post by AnotherTim » Sat Sep 30, 2017 2:40 pm

At least when I sell this car on soon it will (hopefully) have new engine mounts as well... and it clearly needed them having pulled the worst looking one out.



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a question about engine mount sizes.

Post by oilrag » Sat Sep 30, 2017 2:56 pm

a 1mm penny washer either side on threads between metal of mount and rubber will give approx 2mm lift back to where you want to be ...adjust to suit the car ,none are same ,not machine/computer built ,a man positioned chassis mounts from a well worn jig (if he coud be ar**d) i saw many chassis being created on my visits to two gates back in late eighties.


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a question about engine mount sizes.

Post by AnotherTim » Sat Sep 30, 2017 3:29 pm

oilrag wrote:
Sat Sep 30, 2017 1:49 pm
I have these in gtc ,


http://www.shop4autoparts.net/parts/Eng ... ne-gearbox
Just looked at your link now I'm back home on my laptop. They look like a contender for sure. It depends on the stud diameter and thread I guess, but for that price it's worth getting some in to have a look. Just ordered. Thanks!



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a question about engine mount sizes.

Post by AnotherTim » Sat Sep 30, 2017 6:18 pm

Thank you everyone for your help today. I was in a rush to try and get it in at my friend's place so it was a bit of a time-sensitive question. I appreciate the responses.



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