[DeTomaso] Engine Rebuild for 5332

Sean Korb spkorb at gmail.com
Tue Oct 15 22:42:39 EDT 2013


I was pretty shocked when my Cleveland shot a piston into a water jacket
and discovered the wall thickness was less than .125.  0.090 sounds really
scary to me but I know the piston is just going up and down-- unless you
drop a valve :)  Apparently that thickness (thinness?) is pretty common.
Heck, most *sleeves* are .125 which would probably go right into the water
jacket if you tried to bore that much.  1/16th sleeves are available.

I haven't checked the block on my current motor but its destiny is a little
spirited driving to car shows... and I have a spare motor and another block
so that's kind of like insurance, right?  Jack's got me all worried about
my U joints today anyway ;)

sean


On Tue, Oct 15, 2013 at 4:08 PM, <JDeRyke at aol.com> wrote:

> Steve, oil 'leaks' -really, excess oil USEAGE- often comes from too-thin
> cylinder walls for rings to seal under high compression. For $75-100, you
> can
> get a sonic check done on the squeeky-clean block, and this will tell you
> if
> its time for a new block or whether the old one can be safely reused for a
> hi- po build. Generally, wall thicknesses below 0.090" are iffy for lots of
> power but may be OK for an around-town engine.
>
> If wall thicknesses are acceptible and not much taper is found
> top-to-bottom, you can hone the cylinders straight for no more than 0.004"
> of clearance
> and use new 030"-over forged pistons with new rings. This salvages the
> block
> for another round, as forged pistons will grow more with heat than cast (or
> hypereutectics). I'm still running on a 351-C built this way in 1992. Good
> luck- J Deryke
> _______________________________________________
>
> Detomaso Forum Managed by POCA
>
> DeTomaso mailing list
> DeTomaso at poca.com
> http://poca.com/mailman/listinfo/detomaso_poca.com
>



-- 
Sean Korb spkorb at spkorb.org http://www.spkorb.org
'65,'68 Mustangs,'68 Cougar,'78 R100/7,'60 Metro,'59 A35,'71 Pantera #1382
"The more you drive, the less intelligent you get" --Miller
"Computers are useless.  They can only give you answers." -P. Picasso



More information about the DeTomaso mailing list