Do I have to drop the subframe to replace the rear motor mount?

[Blue-By-U]

I definitely don't have time to replace the clutch before the Dyno (noisy TOB) so I've decided that the extreme mounts should be the least I can do before saturday.

I know the subframe does not have to be dropped in order to install the front motor mount as long as the engine is properly supported. However, SHOTIMES wasn't clear as to whether or not the subframe needed to be dropped to access the rear mount.

Also, is it absolutely imperative to remove the lower radiator hose? If so how much coolant is expected to come out that I have to replace...a gallon?

Any input is appreciated. TIA!

 

[jelloslug]

I did not drop the sub frame or unhook any hoses when I changed my motor mounts. DO be sure to unhook the DIS (or even better remove it) before you change the mounts. Theres a good chance that the rear connector will hit somthing when you raise the engine to change the mounts.

 

[Blue-By-U]

Thanks for the heads up...so the lower radiator hose did not get in your way while changing the front mount?

 

[Machspeed]

The hose sits right next to a bolt that needs to come off. I bet money you'll have to remove it. Good time to give your cooling system a flush. thumb

 

[sdpatt]

You will lose most of the coolant inventory when you remove the lower radiator hose. That is the lowest point in the system. You can drain about a gallon to a gallon and a half through the radiator petcock. That can minimize the amount of unrecoverable coolant.

Just use a wooden block (2x4 8" or 10" long) and jack under the engine oil pan to support the engine when replacing the front and rear mounts. Place the jack and wood block under the forward edge of the pan to raise the front of the engine for the front mount and under the rear edge of the pan to raise the rear of the engine for the rear mount.

I have accessed the mounts through the passenger side wheel housing after removing the wheel/tire and the plastic fender splash shield.

 

[Blue-By-U]

Would it be a good idea to measure the amount of coolant I lose and replace it with the same quantity or is there a better method to add the proper amount of coolant?

 

[jelloslug]

I would try to do it without removing the hose first. It's a VERY tight squeeze but if you angle the engine just right you can get the bolt out without unhooking the hose.

 

[pjtoledo]

By the way, those two long bolts like to break, and may already be broken. One IS directly behind the lower hose on an MTX. You may be able to push the hose out of the way, I removed it. If your coolant is more than 2 years old, pitch it. The corrosion inhibitors do not last forever.

Perry