Hey guys,

Ive done some searching and havent found anything. I think this is a question for the motor builders than anything else.

In the process of installing motormounts on my motor, I used the stock bolts from my previous motor. Now unless I didnt notice, they all seemed the same length to me. Each motor mount uses 3 bolts, two on the far outside of the mount and one in the middle.

Well, I added RTV hightemp sealant up all the holes and added a bit to the top portion of the treads of each bolt. I torqued on the outside pairs and they went in fine. I didnt use any washers or anything, just plain bolts.

Now, the inside bolts are what concern me. I torqued them untill they were about 2mm short of sitting flush against the motormount, seemingly a washer would have fit here. Upon further torquing past this point, It became difficult. And then i hear a pop/crack as soon as the bolt head sat flush with the mount. It raised an eyebrow but i didnt think anything of it untill i started to torque the other bolt. I hand tightened this first one it untill it seemed fit.

The other bolt started to get difficult torquing right at about the same distance of the other. But this time, I heard a louder crack and a PIECE of the iron came falling out. When you squeeze your head and sight in between the flywheel and the back iron, you can see where it broke off, esp when there is a trail of RTV behind it. Its hard to see in that deep. You can understand how I may be a bit worried about this....

This is a NEW Half Bridged motor. I really hope i didnt... anyways...

Is my motor ok? I would take off the flywheel to look at things but thats something I would rather not try unless I absolutely have to. This motor is completely finished. I was adding the last and final touch which were the motor mounts. I really hope it is ok....

 

You busted the caps (ends) of the motor mount bolt holes, they were sealed. Screw out the bolts and remove the RTV. Then rescrew the bolts back in.
When you put the bolts in you are suppost to clean out the old RTV as it has nowhere to go.

You are fine, don't worry about it.

 

Than would it be safe to just merely leave it as it is? Theres enough rtv in there to make a good seal already. Do I really need to remove them and then reinsert them with more rtv?

Thank you so much!

 

Be careful, if you don't clean the old silicone off those bolts you can break/chip up your rear engine plate pretty badly. It's happened to me.

 

i know nothing about what your talkign about here, but i myself have cracked engine blocks by screwing in head bolts where there is fluid in the bolt hole. The fluid has nowhere to go and cracks the head. Sounds like youve done the same - but with RTV. Hope all is Ok in the end bud.

 

You already cracked the plate, that was the noise you heard and the metal you found. The end of the bolt holes are shatered. Remove the bolds and remove the RTV then check the damage which is probably minimal. Reinsert the bolts.

 

Not only the bolts but you must clean out the RTV in the bolt hole.

 

Why the rtv on the end of the bolt??? Is there a science to this or was this one of those i wonder if it helps ideas?
I just replaced my motor mounts and aside from a minute amount of thread lock i used nothing else...being the idiot that i am, waited till after the oil change to do this so in the hurry to stop the oil leaking i just bolted the mounts up and torqued them...I figured whats the difference, ever since the rebuild its leaked oil anyways.