I guess I wasn't clear. Mine were sweat fit pins, not full-floating.
They walked anyway.
--David Littlefield
On Mon, 6 Feb 2006 20:58:36 -0800 "Paul Asgeirsson"
<pasgeirsson@worldnet.att.net> writes:
> I guess I'm unfamiliar with building race engines, just long life
> bullet
> proof ones!! What I'm curious about is why would you go to a full
> float
> piston in a 1275? Is there an "Advantage" to getting more HP than a
> fixed
> pin in a 1275? So far, at least with the related experiences here,
> it might
> have some durability issues. Cooper S rods were sweat fit pins.
>
> Anyone?
>
> Paul A
>
> ----- Original Message -----
> From: <dmeadow@juno.com>
> To: <pasgeirsson@worldnet.att.net>
> Cc: <thcollin@mtu.edu>; <spridgets@autox.team.net>
> Sent: Monday, February 06, 2006 8:18 PM
> Subject: Re: Postmortem on a 1275
>
>
> > I'd like to know what is going on, as well. I just had exactly
> this
> > happen on a 1275 using Mega pistons from Mini Mania and APT
> prepped rods.
> > The wrist pins walked and badly scored the cylinder walls in much
> less
> > than 1500 miles (try 4 or 5). So far we can't figure out why.
> Why would
> > the wrist pins be undersized or the rod ends oversized? The
> machinist is
> > going to measure them and see what they are.
> >
> > Anyone have any first-hand experience with this?
> >
> > --David Littlefield
> >
> > On Mon, 6 Feb 2006 16:49:41 -0800 "Paul Asgeirsson"
> > <pasgeirsson@worldnet.att.net> writes:
> > > Wait a second here! It doesn't say it was a 1098, but what else
> has
> > > full
> > > floating wrist pins? So now they want a 1275? I'm confused on
> > > this
> > > article. 1275 has press fit pins in the rods.
> > >
> > > Teflon buttons on a 1098 are a typical cure for retaining wrist
> pin
> > > clips,
> > > so why the search for a different style engine? Am I missing
> > > something?
> > >
> > > Paul A
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