John; Not all 283 blocks will go out to 4". I have bored two of them
that were too thin. The early ones were the thickest casting but over
the years some of them rust inside the water jackets to make them thin.
I have the customer take it and have it sonic tested first. Most are OK,
but it's best to find out first. When I bore a block I can hear a thin
block. They have a tinny or kind of ringing sound when they get
thin. Doug Odom in big ditch
John Beckett wrote:
>
> My experience with block filler is much less satisfactory. Both blocks were
> half filled. Worked great at Maxton (one mile). Survived the three mile
> course at Bonneville, but developed to much heat on rear cylinders...lack of
> proper cooling due to reduced capacity, I believe...on the five mile long
> course and the motor self-destructed. BTW the temp gauge was up front and
> didn't register the problem. There may be ways of re-routing coolant to
> overcome this problem, but I'm not sure I want to experiment with it.
>
> Can tell you that a 283 can be bored to 4" without a problem, or the need
> for filler. Have run them well over 200 MPH in the past.
>
> John Beckett, LSR Comp Coupe #79
>
> ----- Original Message -----
> From: "Dave Dahlgren" <ddahlgren@snet.net>
> To: <LGMCAFEE@aol.com>
> Cc: <land-speed@autox.team.net>
> Sent: Saturday, January 20, 2001 10:21 AM
> Subject: Re: block filler
>
> > yes to all.. do it first make sure everything is very clean
> > follow directions on temp etc to the letter.. and yes it
> > works! Don't go too crazy with it though as the walls have
> > to have some cooling..
> > Dave Dahlgren
> >
> > LGMCAFEE@aol.com wrote:
> > >
> > > Has any body used the concrete type filler that they put in blocks to
> make
> > > them more rigid. I know they use this a lot in drag racing but will this
> work
> > > for the salt. I am going to bore a 283 out to 302 and thought I might
> fill
> > > the block about 1/2 full.
> > > If I do go this route should I fill before having it bored?
> > > Thanks Larry Mac
///
/// land-speed@autox.team.net mailing list
///
|