S12 ca18det brief pointers

Sharas · #1 26-02-2008, 19:00

Quote:

Originally Posted by Pukkasilvia

same s12 engine mounts in exactly the same location.No mods needed

Now i have a little problem here.
Obviously as my s12 was fj20, the engine mounts are different and dont realy fit that well.
So i got my self a couple of s13 engine mounts, but they dont fit the travers (or whatever you call that thing that they bolt to). So now the milion dollar question: are the mounts different and do not bolt up (so i just need a couple of s12 mounts) or is the travers (or whatever it is called) different on the fj and ca cars? Anybody knows?

30psi · #2 26-02-2008, 19:05

I used S13 mounts on an S12 subframe, but I used the S13 brackets (which are required to match the mounts). Benefit of S13 brackets is they bolt to the block via 3 bolts per side (not 2 like on the S12).

Thats all well and good, and you can mount the engine BUT I would like to point out a potential flaw.

I can not tell you if the engine will sit at a different height or not. Whilst this sounds trivial it may effect the angles on the prop shaft and therefore you could experience vibrations due to larger angles on the UJ's. It may be fine (in fact the difference is probably minimal) but I have to point this out as you could find youself with a problem.

I didn't have a problem as I was independantly setting the height of the engine, box and setting the angles up on the Datsun anyway. Only reason I used S13 mounts was coz I wanted to fit nice solid nismo mounts.

s13eater · #3 26-02-2008, 19:10

the fj20 mounts are oblong and about 47mm with the engine sat on them.

Sharas · #4 27-02-2008, 05:10

I am using the s13 brackets, because they came with the engine, so i never even checked if my fj brackets would fit (i just asumed they wouldn't).
Now the thing is that the s13 mounts dont just bolt to the subframe (thats the thing that i was refering to as "travers"

). Seems that i would need to drill a little hole in the subframe, for the little thing that aligns the mount (its closer to the bolt then on the fj mount).
If the left and right mounts are different in this aspect i might have to of the same side. Ill look into this today, maybe make some pic's to make it all clear.

doski · #5 27-02-2008, 06:13

When i fitted my det on the mounts i cut the little locater off my nismo mounts

30psi · #6 27-02-2008, 08:23

Just rotate the mount 90 deg's, the dimple is supposed to sit in the same slot that the bolt goes into. I would also recommend not tightening them up until you got the engine in place as you get a degree of flexibility from where they can move up and down in the slot

Sharas · #7 27-02-2008, 09:14

Allright, ill see what can be done, when i get back home.
Thou i would have a prob with tightening the mount, once the subframe is back in the car. Basicly theres no room to reach that bolt, i guess i would need some sort of a smart wrench, that i dont have

s13eater · #8 27-02-2008, 09:22

if you have the fj20 mounts, could you measure the thickness of them in mm please as i was told they where about 47mm with the engine on them, thanks.

30psi · #9 27-02-2008, 09:26

Quote:

Originally Posted by Sharas

Allright, ill see what can be done, when i get back home.
Thou i would have a prob with tightening the mount, once the subframe is back in the car. Basicly theres no room to reach that bolt, i guess i would need some sort of a smart wrench, that i dont have

Yeah you need to smash the spanner up a bit with a hammer.

This image shows visually how the dimple should sit