One of my engine mounts has collapsed and the engine is now resting against the battery . Need to replace it before my next autocross and someone who runs a porsche 914 uses solid engine mounts and suggests I do the same. Was wondering if any racer types see any advantage in doing this, I'm not bothered by a bit extra harshnes in the comfort department.
On one car i use a mgb mount on the battery side. There are also other cars wich use these type of mountings (AH 3000 same type but bigger and some american cars but please do not use american parts on a triumph). These ar designed to fit vertical. They are about 10cm long and 3cm thick. So there's a lot (10cm) vertical rubber to hold the engine and not so many rubber (3cm) to bend. On the rest i have modified the subframes and the engine brackets to use original sprint mountings but now the two mountings have the same diagonal angle. Your engine will not fall down on the oilpump anymore. This is for me the best option and when of any reason the engine must out of the car i will modify this subrame too but, a mgb mounting works fine. Personal i like to use original parts and a mgb mounting looks a bit like "he could not find an original and fitted this one two day's for the MOT"
Good point Dave regarding the subframe. Time is short before the next event so you are right solid mounts would be easier to do in the short time or thanks to Jeroensprint I may be able to get MGB ones quicker locally.
Hello, maybe i'm to theoretical but i think solid mountings will break something. Subframemountings do not move as much as flexible enginemountings. When you are accellerating at once the whole drivetrain moves first to the opposite direction in the flexible enginemountings and catches some forces. Also with deceleration. For example your universal joints and gearbox and clutch(sorry for my english but mabe you know what i mean) have to accept all the forces when your engine is steady. Normaly the engine rotates a little left and right when acceleration and deceleration and the flexible mountings accept the first forces and then the gearbox and propshaft. With rubber mountings there is no abrubt movements. I think with solid mountings your drivetrain will have to accept too much bang bang knock.
To get even more theoretical is more tordation of your cranckshaft with solid mountings.
I do not have experience with solid mountings but i think it's not only comfort.
I did see many of my dolomites full throttle on a dynojet and take from me, when you are standing next to it and your car is going 190km/h 7000rpm it looks like you engine wants to leave your car and then you are happy you have flexible mountings.
. Need to replace it before my next autocross and someone who runs a porsche 914 uses solid engine mounts and suggests I do the same. Was wondering if any racer types see any advantage in doing this, I'm not bothered by a bit extra harshnes in the comfort department.