Difference between cab and coupe engine support bracket
03-10-2002, 10:34 PM
#1
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Location: Valparaiso, IN
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Difference between cab and coupe engine support bracket
I am prepping an '84 cab for weekend racing (and some street use). I was considering putting solid mounts in just the rear to gain some chasis rigidity. Then it was mentioned that a cab should first switch to a coupe/targe style engine mount to gain any benefit. I looked at pics of the two different setups. I see the cabs have the huge round rubber thing in the center, where as on coupe/targa's the engine mount mounts directly to the engine bracket.
My questions are:
1) Why did Porsche use the two different setups?
2) What all is involved in swapping a cab to a coupe setup (the crossmember and the bracket on the engine it bolts to)?
3) Do I have to drop the engine to get this bracket off (not the crossmember)?
4) What gain would I see if I were to do this?
5) Would the engine vibration shock be unnecessary?
6) Is this conversion necessary to get any benefit from solid engine mounts in the rear?
Colby
My questions are:
1) Why did Porsche use the two different setups?
2) What all is involved in swapping a cab to a coupe setup (the crossmember and the bracket on the engine it bolts to)?
3) Do I have to drop the engine to get this bracket off (not the crossmember)?
4) What gain would I see if I were to do this?
5) Would the engine vibration shock be unnecessary?
6) Is this conversion necessary to get any benefit from solid engine mounts in the rear?
Colby
03-12-2002, 04:23 AM
#2
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Hello
1) Why did Porsche use the two different setups?
On the convertibles the enginemountstiffness was softend and received a damper.
This layout allowed to counterswing masses wich makes the convertible feel more solid and quiter.
2) What all is involved in swapping a cab to a coupe setup (the crossmember and the bracket on the engine it bolts to)?
Crossmember and the rubber mounts.
3) Do I have to drop the engine to get this bracket off (not the crossmember)?
Noit realy just something that will hold it inside the bay when you remove the rear carrier.
It will drop alone following Newtons laws if you turn the bolts loose
4) What gain would I see if I were to do this?
Surprise, it will make the convertible feel more like a italian made car.
5) Would the engine vibration shock be unnecessary?
Like said this unit works in combination with the softer mounts and the torsion damper.
6) Is this conversion necessary to get any benefit from solid engine mounts in the rear?
Solid mounts do only gain enough benfits on hard cars ( with tubular frame or reinforcement structure )
Grüsse
1) Why did Porsche use the two different setups?
On the convertibles the enginemountstiffness was softend and received a damper.
This layout allowed to counterswing masses wich makes the convertible feel more solid and quiter.
2) What all is involved in swapping a cab to a coupe setup (the crossmember and the bracket on the engine it bolts to)?
Crossmember and the rubber mounts.
3) Do I have to drop the engine to get this bracket off (not the crossmember)?
Noit realy just something that will hold it inside the bay when you remove the rear carrier.
It will drop alone following Newtons laws if you turn the bolts loose
4) What gain would I see if I were to do this?
Surprise, it will make the convertible feel more like a italian made car.
5) Would the engine vibration shock be unnecessary?
Like said this unit works in combination with the softer mounts and the torsion damper.
6) Is this conversion necessary to get any benefit from solid engine mounts in the rear?
Solid mounts do only gain enough benfits on hard cars ( with tubular frame or reinforcement structure )
Grüsse