thanks to all that have responded!
Man what a life... all this knowledge !
I've posted a page with photos of the cyl
and piston. I'm measuring the piston now
(it's laying here between me and the keyboard)
http://www.teglerizer.com/triumphstuff/75w_pistons.htm
***************************
According to some of the spec you all have
supplied me the rings look to be within toleranceCompression
Top...........................................Plain Type-
chrome plated
Second.....................................Tapered
periphery
Width { top/second} ...............0.0615 to 0.0625 in
{ 1.575 to 1.578 mm }
Fitted gap {top/second}...........0.012 to 0.022 in
{0.305 to 0.559 mm }
Ring/groove clearance
Top and second.......................0.0015 to 0.0035 in
{ 0.038 to 0.089 mm }
Oil control
Type.........................................Expander
with two chrome faced rings
Fitted gap { chromed-faced rings.. 0.015 to 0.055 in {
0.38 to 1.40 mm }
Don't forget to check the rod bearings for wear too.
*****************************
The only spec not up to par as above...
id the ring/groove clearance. Mine is closer to .003-.004
top ring
.006 on the second ring
If I warp a feeler gauge... the .004 will just squeeze
between the cyl and piston
on one side.
Paul Tegler ptegler@cablespeed.com
www.teglerizer.com
----- Original Message -----
From: "Paul Tegler" <wizardz@toad.net>
To: <triumphs-owner@autox.team.net>;
<triumphs@autox.team.net>; <spitfires@autox.team.net>;
<spitfire-enthusiast@yahoogroups.com>;
<SPIT6CGT6@yahoogroups.com>; "NASS" <nass@egroups.com>
Sent: Wednesday, October 24, 2001 7:40 PM
Subject: [spitfire-enthusiast] engine rebuild after the
screw up! now REALLY confused
> OK who know what the ring gap should be on a stock
> 1500 piston? ... can't find it in the books at this
> moment.
>
> I pulled #3 piston... it looks good! No gouges...rings
in
> tack!
> I had to tap it up from underneath but it popped right out
> with simple
> hand pressure at the other end of a long socket extension.
>
> Is it possible the rings simply stuck?
> they are pretty crusty. I'll post pics latter this
evening
> of the
> cylinder walls which look fine. The piston shows a bit of
> wear
> on two sides but all the rings are there in one piece and
> can be
> moved around.
>
> I stuck the upper most ring back in the cyl just to check
> for
> warpage. I can't see any light around the wall/ring
> interface
> regardless of where I put it in the cyl (as long as I have
> it
> perfectly perpendicular to the walls.
>
> so... what's my next step? just bite the bullet and
> bore it and drop new 9:1 pistons in? :-)
>
> Paul Tegler ptegler@cablespeed.com
> www.teglerizer.com
> ----- Original Message -----
> From: "Michael" <blue_jay@bigfoot.com>
> To: <spitfire-enthusiast@yahoogroups.com>
> Sent: Wednesday, October 24, 2001 5:30 PM
> Subject: [spitfire-enthusiast] Re: engine rebuild after
the
> screw up! What are the odds
>
>
> > Paul, if you do find that you need to replace a piston,
> I'd definitely yank
> > 'em all and go 9:1. I did it without upgrading the cam,
> and everyone raves
> > about my performance. Considering the cost, it's a lot
of
> bang for the
> > buck.
> >
> > Michael
> >
> > ----- Original Message -----
> > From: Ptegler <ptegler@gouldfo.com>
> > To: <triumphs-owner@autox.team.net>;
> <triumphs@autox.team.net>;
> > <spitfires@autox.team.net>;
> <spitfire-enthusiast@yahoogroups.com>;
> > <SPIT6CGT6@yahoogroups.com>; <nass@egroups.com>
> > Sent: Wednesday, October 24, 2001 1:13 PM
> > Subject: [spitfire-enthusiast] Re: engine rebuild after
> the screw up! What
> > are the odds
> >
> >
> > > Well,,..
> > > just checked the engine. The oil Marvel Mystery
> > > oil I left in the cyls overnight is gone in #3.
> > > 1 2 and 4 still have almost the full amount I put
> > > in late last night.
> > >
> > > So... I assume I need rings and or a piston to replace
> #3
> > >
> > > QUESTION...
> > > What are the odds it's just rings and I can get away
> with
> > > only replacing the rings in #3? The cyl walls look OK.
> > > nice and shiny with no scoring visible.
> > > They appear to still be the orig pistons (no overbore
> > > only 37K orig miles on the odometer)
> > >
> > > Do I chance it and just replace the rings? ....
replace
> the
> > > pistons and rings? (1...all 4 as a set) If so should
I
> go
> > > ahead and drop in a set of 9:1 flat top pistons?
> > >
> > > anyone BTDT...either/any of these routes?
> > >
> > > Paul Tegler ptegler@gouldfo.com
> www.teglerizer.com
> > >
> > >
> > >
> > >
> > > ----- Original Message -----
> > > From: <ptegler@gouldfo.com>
> > > To: < Sent: Wednesday, October 24, 2001 9:28 AM
> > > Subject: better head gasket and source
> > >
> > >
> > > OK...asking for the collective list wisdom....
> > >
> > > I'm looking for the better quality in head gaskets
> > > for a Spitfire 1500 engine.
> > > Who/what/where delivers a decent quality head gasket?
> > >
> > > VB now carries ARP head stud sets... are they worth
> > > the money (~$80 vs stock at half that)
> > >
> > > Paul Tegler ptegler@gouldfo.com
> www.teglerizer.com
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > > Your use of Yahoo! Groups is subject to
> http://docs.yahoo.com/info/terms/
> > >
> > >
> > >
> >
> >
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