Beefed up Flex plate
03-06-2004, 12:36 AM
#11
Guest
Posts: n/a
Re: Beefed up Flex plate
Nope, the 2.8 external balanced is notorious for cracking flex plates.
Its a 'fatigue' thing as the nonsymmetric 'hole' pattern in the plate
leads to quite a field of concentrated stress zones at the crankshaft
mounting surface. The unsymmetric hole pattern probably causes the
plate to strain unevenly .... it always cracks 180deg from the
welded-on bob weight.
In article <40492e1f_3@newspeer2.tds.net>, Jerry Newton
<leaveme@lone.net> wrote:
> I gotta wonder how you have managed to rip through 4 flex plates. Is there
> something else we oughta be lookin at? Torque converter unbalanced,
> locating pins missing from engine block, something along these lines.....
> most cars make it to their death bed with the original flexplate.
>
> Jerry
>
>
> "L.W. (ßill) ------ III" <----------@***.net> wrote in message
> news:404925F6.13446DDB@***.net...
> > Hi Rich,
> > Do you really think any self respecting member of the National Hot
> > Rod Association would have anything to do with an 2.8 Chevy? ;-)
> > Good luck, finding one it sounds like you're rapidly using them up
> > from the bone yards. And the 2.8 went internal in '88, then according
> > to: http://www.off-road.com/jeep/cheroke...28-34swap.html
> > you're got more problems with flex plate changing from three to four
> > bolt torque converters.
> > God Bless America, ßill O|||||||O
> > mailto:-------------------- http://www.----------.com/
> >
> > Rich Hampel wrote:
> > >
> > > Need source of custom flex plate for 86 XJ Cherokee with 2.8L
> > > (externally balanced). Need a heavier duty flex plate than OEM as I've
> > > torqued off 4 of them over the years.
> > > Any sources (including NHRA spec'd.) would be appreciated
>
>
Its a 'fatigue' thing as the nonsymmetric 'hole' pattern in the plate
leads to quite a field of concentrated stress zones at the crankshaft
mounting surface. The unsymmetric hole pattern probably causes the
plate to strain unevenly .... it always cracks 180deg from the
welded-on bob weight.
In article <40492e1f_3@newspeer2.tds.net>, Jerry Newton
<leaveme@lone.net> wrote:
> I gotta wonder how you have managed to rip through 4 flex plates. Is there
> something else we oughta be lookin at? Torque converter unbalanced,
> locating pins missing from engine block, something along these lines.....
> most cars make it to their death bed with the original flexplate.
>
> Jerry
>
>
> "L.W. (ßill) ------ III" <----------@***.net> wrote in message
> news:404925F6.13446DDB@***.net...
> > Hi Rich,
> > Do you really think any self respecting member of the National Hot
> > Rod Association would have anything to do with an 2.8 Chevy? ;-)
> > Good luck, finding one it sounds like you're rapidly using them up
> > from the bone yards. And the 2.8 went internal in '88, then according
> > to: http://www.off-road.com/jeep/cheroke...28-34swap.html
> > you're got more problems with flex plate changing from three to four
> > bolt torque converters.
> > God Bless America, ßill O|||||||O
> > mailto:-------------------- http://www.----------.com/
> >
> > Rich Hampel wrote:
> > >
> > > Need source of custom flex plate for 86 XJ Cherokee with 2.8L
> > > (externally balanced). Need a heavier duty flex plate than OEM as I've
> > > torqued off 4 of them over the years.
> > > Any sources (including NHRA spec'd.) would be appreciated
>
>
03-06-2004, 12:36 AM
#12
Guest
Posts: n/a
Re: Beefed up Flex plate
Nope, the 2.8 external balanced is notorious for cracking flex plates.
Its a 'fatigue' thing as the nonsymmetric 'hole' pattern in the plate
leads to quite a field of concentrated stress zones at the crankshaft
mounting surface. The unsymmetric hole pattern probably causes the
plate to strain unevenly .... it always cracks 180deg from the
welded-on bob weight.
In article <40492e1f_3@newspeer2.tds.net>, Jerry Newton
<leaveme@lone.net> wrote:
> I gotta wonder how you have managed to rip through 4 flex plates. Is there
> something else we oughta be lookin at? Torque converter unbalanced,
> locating pins missing from engine block, something along these lines.....
> most cars make it to their death bed with the original flexplate.
>
> Jerry
>
>
> "L.W. (ßill) ------ III" <----------@***.net> wrote in message
> news:404925F6.13446DDB@***.net...
> > Hi Rich,
> > Do you really think any self respecting member of the National Hot
> > Rod Association would have anything to do with an 2.8 Chevy? ;-)
> > Good luck, finding one it sounds like you're rapidly using them up
> > from the bone yards. And the 2.8 went internal in '88, then according
> > to: http://www.off-road.com/jeep/cheroke...28-34swap.html
> > you're got more problems with flex plate changing from three to four
> > bolt torque converters.
> > God Bless America, ßill O|||||||O
> > mailto:-------------------- http://www.----------.com/
> >
> > Rich Hampel wrote:
> > >
> > > Need source of custom flex plate for 86 XJ Cherokee with 2.8L
> > > (externally balanced). Need a heavier duty flex plate than OEM as I've
> > > torqued off 4 of them over the years.
> > > Any sources (including NHRA spec'd.) would be appreciated
>
>
Its a 'fatigue' thing as the nonsymmetric 'hole' pattern in the plate
leads to quite a field of concentrated stress zones at the crankshaft
mounting surface. The unsymmetric hole pattern probably causes the
plate to strain unevenly .... it always cracks 180deg from the
welded-on bob weight.
In article <40492e1f_3@newspeer2.tds.net>, Jerry Newton
<leaveme@lone.net> wrote:
> I gotta wonder how you have managed to rip through 4 flex plates. Is there
> something else we oughta be lookin at? Torque converter unbalanced,
> locating pins missing from engine block, something along these lines.....
> most cars make it to their death bed with the original flexplate.
>
> Jerry
>
>
> "L.W. (ßill) ------ III" <----------@***.net> wrote in message
> news:404925F6.13446DDB@***.net...
> > Hi Rich,
> > Do you really think any self respecting member of the National Hot
> > Rod Association would have anything to do with an 2.8 Chevy? ;-)
> > Good luck, finding one it sounds like you're rapidly using them up
> > from the bone yards. And the 2.8 went internal in '88, then according
> > to: http://www.off-road.com/jeep/cheroke...28-34swap.html
> > you're got more problems with flex plate changing from three to four
> > bolt torque converters.
> > God Bless America, ßill O|||||||O
> > mailto:-------------------- http://www.----------.com/
> >
> > Rich Hampel wrote:
> > >
> > > Need source of custom flex plate for 86 XJ Cherokee with 2.8L
> > > (externally balanced). Need a heavier duty flex plate than OEM as I've
> > > torqued off 4 of them over the years.
> > > Any sources (including NHRA spec'd.) would be appreciated
>
>
03-06-2004, 12:36 AM
#13
Guest
Posts: n/a
Re: Beefed up Flex plate
Nope, the 2.8 external balanced is notorious for cracking flex plates.
Its a 'fatigue' thing as the nonsymmetric 'hole' pattern in the plate
leads to quite a field of concentrated stress zones at the crankshaft
mounting surface. The unsymmetric hole pattern probably causes the
plate to strain unevenly .... it always cracks 180deg from the
welded-on bob weight.
In article <40492e1f_3@newspeer2.tds.net>, Jerry Newton
<leaveme@lone.net> wrote:
> I gotta wonder how you have managed to rip through 4 flex plates. Is there
> something else we oughta be lookin at? Torque converter unbalanced,
> locating pins missing from engine block, something along these lines.....
> most cars make it to their death bed with the original flexplate.
>
> Jerry
>
>
> "L.W. (ßill) ------ III" <----------@***.net> wrote in message
> news:404925F6.13446DDB@***.net...
> > Hi Rich,
> > Do you really think any self respecting member of the National Hot
> > Rod Association would have anything to do with an 2.8 Chevy? ;-)
> > Good luck, finding one it sounds like you're rapidly using them up
> > from the bone yards. And the 2.8 went internal in '88, then according
> > to: http://www.off-road.com/jeep/cheroke...28-34swap.html
> > you're got more problems with flex plate changing from three to four
> > bolt torque converters.
> > God Bless America, ßill O|||||||O
> > mailto:-------------------- http://www.----------.com/
> >
> > Rich Hampel wrote:
> > >
> > > Need source of custom flex plate for 86 XJ Cherokee with 2.8L
> > > (externally balanced). Need a heavier duty flex plate than OEM as I've
> > > torqued off 4 of them over the years.
> > > Any sources (including NHRA spec'd.) would be appreciated
>
>
Its a 'fatigue' thing as the nonsymmetric 'hole' pattern in the plate
leads to quite a field of concentrated stress zones at the crankshaft
mounting surface. The unsymmetric hole pattern probably causes the
plate to strain unevenly .... it always cracks 180deg from the
welded-on bob weight.
In article <40492e1f_3@newspeer2.tds.net>, Jerry Newton
<leaveme@lone.net> wrote:
> I gotta wonder how you have managed to rip through 4 flex plates. Is there
> something else we oughta be lookin at? Torque converter unbalanced,
> locating pins missing from engine block, something along these lines.....
> most cars make it to their death bed with the original flexplate.
>
> Jerry
>
>
> "L.W. (ßill) ------ III" <----------@***.net> wrote in message
> news:404925F6.13446DDB@***.net...
> > Hi Rich,
> > Do you really think any self respecting member of the National Hot
> > Rod Association would have anything to do with an 2.8 Chevy? ;-)
> > Good luck, finding one it sounds like you're rapidly using them up
> > from the bone yards. And the 2.8 went internal in '88, then according
> > to: http://www.off-road.com/jeep/cheroke...28-34swap.html
> > you're got more problems with flex plate changing from three to four
> > bolt torque converters.
> > God Bless America, ßill O|||||||O
> > mailto:-------------------- http://www.----------.com/
> >
> > Rich Hampel wrote:
> > >
> > > Need source of custom flex plate for 86 XJ Cherokee with 2.8L
> > > (externally balanced). Need a heavier duty flex plate than OEM as I've
> > > torqued off 4 of them over the years.
> > > Any sources (including NHRA spec'd.) would be appreciated
>
>
03-06-2004, 01:10 AM
#14
Guest
Posts: n/a
Re: Beefed up Flex plate
To bad they don't use a counter balance on a separate plate that
bolts between the crank and flex plate, like is stock on the Chevy 400"
small block.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Rich Hampel wrote:
>
> Nope, the 2.8 external balanced is notorious for cracking flex plates.
> Its a 'fatigue' thing as the nonsymmetric 'hole' pattern in the plate
> leads to quite a field of concentrated stress zones at the crankshaft
> mounting surface. The unsymmetric hole pattern probably causes the
> plate to strain unevenly .... it always cracks 180deg from the
> welded-on bob weight.
bolts between the crank and flex plate, like is stock on the Chevy 400"
small block.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Rich Hampel wrote:
>
> Nope, the 2.8 external balanced is notorious for cracking flex plates.
> Its a 'fatigue' thing as the nonsymmetric 'hole' pattern in the plate
> leads to quite a field of concentrated stress zones at the crankshaft
> mounting surface. The unsymmetric hole pattern probably causes the
> plate to strain unevenly .... it always cracks 180deg from the
> welded-on bob weight.
03-06-2004, 01:10 AM
#15
Guest
Posts: n/a
Re: Beefed up Flex plate
To bad they don't use a counter balance on a separate plate that
bolts between the crank and flex plate, like is stock on the Chevy 400"
small block.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Rich Hampel wrote:
>
> Nope, the 2.8 external balanced is notorious for cracking flex plates.
> Its a 'fatigue' thing as the nonsymmetric 'hole' pattern in the plate
> leads to quite a field of concentrated stress zones at the crankshaft
> mounting surface. The unsymmetric hole pattern probably causes the
> plate to strain unevenly .... it always cracks 180deg from the
> welded-on bob weight.
bolts between the crank and flex plate, like is stock on the Chevy 400"
small block.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Rich Hampel wrote:
>
> Nope, the 2.8 external balanced is notorious for cracking flex plates.
> Its a 'fatigue' thing as the nonsymmetric 'hole' pattern in the plate
> leads to quite a field of concentrated stress zones at the crankshaft
> mounting surface. The unsymmetric hole pattern probably causes the
> plate to strain unevenly .... it always cracks 180deg from the
> welded-on bob weight.
03-06-2004, 01:10 AM
#16
Guest
Posts: n/a
Re: Beefed up Flex plate
To bad they don't use a counter balance on a separate plate that
bolts between the crank and flex plate, like is stock on the Chevy 400"
small block.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Rich Hampel wrote:
>
> Nope, the 2.8 external balanced is notorious for cracking flex plates.
> Its a 'fatigue' thing as the nonsymmetric 'hole' pattern in the plate
> leads to quite a field of concentrated stress zones at the crankshaft
> mounting surface. The unsymmetric hole pattern probably causes the
> plate to strain unevenly .... it always cracks 180deg from the
> welded-on bob weight.
bolts between the crank and flex plate, like is stock on the Chevy 400"
small block.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Rich Hampel wrote:
>
> Nope, the 2.8 external balanced is notorious for cracking flex plates.
> Its a 'fatigue' thing as the nonsymmetric 'hole' pattern in the plate
> leads to quite a field of concentrated stress zones at the crankshaft
> mounting surface. The unsymmetric hole pattern probably causes the
> plate to strain unevenly .... it always cracks 180deg from the
> welded-on bob weight.
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