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Discussion Starter #1
I'm thinking of getting a fan shroud, my concern is how much the engine moved during acceleration.
I have a modified engine, it really lifts up under power. The fan shroud i was looking at only has a 1/2
clearence, it looks like the engine moves more then that. I have a cowl hood, so I can see the engine rocking around in there. The motor mounts are good! Am i being paranoid?

1966 Mustang Coupe, 302 custom roller cam, holley 650dp,http://www.289mustang.com
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I don't think you're being paranoid. You may consider a solid mount or re-enforcing your mounts by drilling a hole and running a bolt through them. That could reduce the movement. You may just want to get an electric fan like the one Hot Rod Air makes that has its own shroud and is custom made for the Mustang.

Black primer 66 coupe, bench seat, 68 302-2V, C-4, 3.55 TSD
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Bill: I asked the same question last year and I believe that Pat (Camachinist) said about 1/2" clearance was needed. I test fit the fan in the shroud and it looks about right. I haven't installed my fan yet, but if it is a little too close, I'm gonna buzz the tips of the fan blades with my Dremel tool. Hopefully, I won't throw the fan out of balance in the process.

Glenn Morgan 66 GT Fastback 351w+toploader
 

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Good suggestions.

Isn't there also omething called a 'torque strap' that you can fashion to limit the engine's rocking? Seems to me when Poppy65 was having clutch chatter problems, he fashioned one himself and it eliminated the engine movement that was driving him nuts.

Glenn Morgan 66 GT Fastback 351w+toploader
 

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Discussion Starter #5
Good feedback, I've been thinking about a torque strap myself. soemtimes when I don't get he clutch
timed right i get into this hurky jerky thing, gotta push the clutch in and try it again. I thought about solid
motor mounts but don't think it would be so hot on the street.

1966 Mustang Coupe, 302 custom roller cam, holley 650dp,http://www.289mustang.com
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I put two very large carriage bolts through my driver's side mount and ground off the tops a bit for clearance. Then welded the nuts on so they don't let go. This has worked amazingly well. Now the car moves with the motor... but nothing that will shake your teeth loose at idle. In fact there is no noticeable vibration transfer using this method.

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Glenn,
I would be very careful if you use the dremel to remove any material from the fan. In theory, this could adverse affect your engine's balance. I'd modify the shroud first, or put on a torque strap.

Rob
Member: Slightly Modified
66 coupe 302
66 fastback 351W
 

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If you have the single stud in the center of the rubber block type motor mounts then sooner or later you will have motor mount problems I think. If its lifting very much you may be on the road to cracking one or both of them already.

I busted 3 sets of those mounts and I had a turnbuckle on the driver side front of the head to try and hold my motor down. I wound up having a good sized hole drill pressed through the motor mount and bracket and put some grade 8 nuts and bolts through them to hold them together. It has worked great and I still have some cushion so its not as rough as solids.



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well...not exactly. the fan isnt' connected to the crank. But your right about imbalancing the fan...prolly not a good thing. It will wear out the water pump quicker...
 
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FordMuscle has a makeshift engine strap setup in their tech section..might give it a look...(fordmuscle.com)

71redrag
 

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ya, obviously the fan isn't attached to the crank. I shouldn't have said engine, but instead water pump. I guess that I need to have more caffiene before replying to posts. *LOL*

Rob
Member: Slightly Modified
66 coupe 302
66 fastback 351W
 
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