Bummer.I thought the Magnum motors were an improvement
over the pre-mags in every respect.But the old motors
did not really have this problem,did they? The old
318`s could take any kind of abuse or neglect,and not
suffer.Maybe it IS just a heat-related problem with
the higher op-temps of today`s engines. Steve P.
--- Dave and Charlene <DOHCTurboIII@Sympatico.ca>
wrote:
>
> > > >We took the heads to be checked off of the 3.9
> and the machine shop
> said
> > > they
> > > were cracked. He said almost every 3.9 or 5.2
> Mopar head they see is
> > > cracked.
> > > Anyone believe this?<<
> > > 100%!!
> > > during my 360 buildup, I went through 3 heads.
> All were cracked in the
> #7/#8
> > > between the valve-seats. Out of all the heads I
> got one that was
> crack-free,
> > > and one that has a small crack that passed the
> pressure tests..
>
>
> Yes we have done quite a few at work, and they were
> not high milers either.
> Dave St.Louis
>
----------------------------------------------------------------------
> 98 GRAND CHEROKEE LTD. 5.9L {14.82@91}
> 89 LEBARON GTC Conv. Intercooled 2.5
> {14.13@95}
> 88 SHADOW ES Intercooled 16V DOHC 2.2
> {12.04@118}
> 89 SPIRIT ES
> Pics at :
>
http://albums.photopoint.com/j/AlbumList?u=1146486&Auth=false
>
> *~*MOPAR OR NO CAR
> !!*~*
>
>
>
=====
1999 Dakota Sport 3.9V6,4x4,3.92 Anti-spin,42RE auto,Intense Blue,regular cab.
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