flex plate weight (Full Version)

Mustang Forums >> Ford Mustang Tech >> Classic Mustangs >> Mustang II Section

flex plate weight

  

my77project -> flex plate weight (12/17/2007 3:40:56 PM)

this goes out to my77stang in particular, but anyone else as well who knows the answer.  I know that around 80 they switched from a 28 oz flex plate to a 50 oz one.  my question is, can I take a late 80's motor w/ 50 oz flex plate and mate it to my 77 c4 transmission?  I know the flex plate effects the ballance of the engine, but I don't know what else it effects as far as the interface with the tranny etc.  help would be much appreciated here as I'm trying to figure out what option I should take w/ my engine. 

  
my77stang -> RE: flex plate weight (12/17/2007 3:48:48 PM)

you need the harmonic balance and the flexplate to both be 50 oz. the problem is a regular 302 flexplate will not fit in the Mustang II bellhousing. So, the answer is to take your 28 oz Mustang II flywheel and have it rebalanced for a 50 oz application. I used to have one, but it got sold on ebay a few years ago.

btw, you can't just use the old 28oz harmonic balance and 28 oz flexplate on the later motor. that = essploded motor [;)]

(can you tell i've done this before?)

my77project -> RE: flex plate weight (12/17/2007 3:56:36 PM)

just curious, but why does that make an exploded motor? 


my77stang -> RE: flex plate weight (12/17/2007 5:04:08 PM)

because it does


but seriously, the rotating assembly needs a 28 or 50 oz balancer/flexplate to offset the imblance of the crank/pistons/rods so you cant just mix and match [8D]

mjr46 -> RE: flex plate weight (12/17/2007 7:57:24 PM)

the imbalance if not correct will make cottage cheese out of the mains..it'll cause way to much harmonics...you can buy a 50 oz flexplate for a c-4 they are cheap!!!   cost under 150.00 or even less I believe[:D]

my77stang -> RE: flex plate weight (12/17/2007 8:08:02 PM)

the problem is the II's have a smaller flexplate than used on any other 302. its Mustang II 302 specific for 1975-1978. 

my77project -> RE: flex plate weight (12/18/2007 5:13:31 PM)

so can most machine shops do the reballance?

my77stang -> RE: flex plate weight (12/18/2007 6:41:13 PM)

any machine shop that has a balancer. [;)]

  

Page: [1]

Return to Mustang Forums home page or view the Full Version of this page.