im just thinking that if the engine even twists the mounts a little bit on a hard launch, that little bit of movement can put alot of leverage on the exaust manifold if the entire exaust doesnt move with it, youre better off so it wont crack or anything in the long run

 

yeah, it would really **** me off to crack my manifold, those bitches are hard to find in the states. I had to import one.

 

1- im not a noob~
2- in a FWD car, the forces of engine torque are leveraged on the motor mounts in a twisting fashion, where as in a RWD car, they would be pressure and lifting force... Heres a quick drawing..


Personnally, i wouldnt weld my motor mounts IMO. (fwd honda)

but if you are, deffinately get a flex section. Remember your hangers will give a little bit too.

 

Im still going to weld them, because when I start feeding 200+ HP through a tranny designed to hold 88, Its going to need all the help it can get to survive... The escort tranny sucks to begin with, let along when you start hammering the ---- out of it. Im also going to get a flex section as well.

 

yeah exactly.. v8's dont lift they twist just like you drew.

 

who would have thought that pressure upwards on one side of something and downwords on the other side would create lift??!! :1

 

I've seen a lot of Pro FWD cars that use solid mounts. They don't break. If this is for a daily driver, I would refrain from having solid mounts. The vibration would get annoying after awhile. You should just fill them with urethane.

 

Im still going to weld them if the vibs are too much of a PITA, I've got a spare set of mounts laying around.

 

Smart guy~ one side is bolted... and is holding that mount from lifting... and the other side is bolted down... holding the other side of the engine... niether of these mounts succumb to any Twisting force at all. The i4 motor mounts are preventing twisting, because they are located in the center of that tourque~

BUt ya man, go ahead. vibratin is fun, have ur girl hold ur shifter... an watch her bite her lip an close her eyes~ j/k man

 

unibody cars made from sheet metal and solid engine mounts dont last,most V8 cars have real frames or at least subframes. Get a welder so you can mig up the cracks, I love people that look at race cars for there street car ideas