Ta for that info. As it happens, by bro-in-law is doing the same thing and he is also using a 4dx frame and is having the same sprocket issue....

Think we may be onto something here.......

Can anyone with a 3tj frame take some measurements of the rear engine mounts, relative to a fixed common point (something like the swingarm, maybe?). That way i can compare to the 4dx and finally discover the reason why the sprockets don't line up.

Although, that still doesn't really account for it...... If the engine was too far over to the left then it wouldn't just be kissing the left frame mount, it wouldn't actually fit at all....

Damn it

Here we are ... I didn't get dimensions cos the Bim was in the way

Ta Boris

nick,check back to page 4 i had the same problem.

I read that with interest, sounded just like my issue. The thing is I'm not missing any spacers, I dropped the 400 engine out and used everything to put the 600 in. I assume you got it sorted by using the missing spacer?

I discoverd i there were no spacers missing,what i did was to cut some of the bottom mount away,
that did allow me to move the motor over.

Im adapting a cat engine in my 3tj frame.

I am thinking of cutting and welding the mounts.

[IMG=http://img593.imageshack.us/img593/7407 ... ndo.th.jpg][/IMG]

Cutting the piece marked by the red line.

The engine will be supported by only one screw on each side.

It seems a bad idea?

Cutting the piece marked by the red line. The engine will be supported by only one screw on each side. It seems a bad idea?

Yes, it's a bad idea.
Make the plates and use the countersunk screws recomended in this thread.

I agree with EC, go for the alloy plates and keep your frame mounts intact.

If you are going to cut the mounts on the frame you might as well cut them off completely and relocate them to catch both bolts on the engine. It seems a bit pointless to cut up a frame to only catch one bolt.

+1 with the guys, do not mess about with the mounts. The alloy plates are a tried and tested method that works