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The rattling is likely piston slap on cold forged pistons. Did it go away w=
hen it warmed up and came back on the next cold start ?=20
jim=20
----- Original Message -----
From: "Steve Yott" <tr4@wi.rr.com>=20
To: "Robert Lang" <robertlangtr6@yahoo.com>, "FOT List" <fot@autox.team.net=
>=20
Sent: Wednesday, May 25, 2016 11:27:27 AM=20
Subject: Re: [Fot] TR6 Piston / Head Clearance=20
I doubt that your .030 squish would cause the rattling as you describe. The=
deflection caused by the crank, rod and piston in order to hit the head at=
.030 would be way up in the rpm=E2=80=99s like 8000!=20
Did the rattling go away after all the parts warmed up and oil was well dis=
bursed or is it still rattling? My first guess would be either the engine w=
as not pre-oiled or you have loose piston pin bushings=E2=80=A6. Were the r=
ods rebuilt with new bushings fitted to about .0003?=20
Steve Yott=20
From: Fot [mailto:fot-bounces@autox.team.net] On Behalf Of Robert Lang=20
Sent: Wednesday, May 25, 2016 11:29 AM=20
To: FOT List=20
Subject: Re: [Fot] TR6 Piston / Head Clearance=20
Hi,=20
Where I was going with the query was this: I had a late block "decked" with=
the intent of making the deck flat. The machinist took of .032 to accompli=
sh the goal. With a head gasket installed and the head torqued, the clearan=
ce in the squish area is .030.=20
I had initially wanted only about .025 removed, but we had to shave an extr=
a .007 to get rid of the fire ring cuts.=20
On initial startup, the motor sounded like it might be "rattling" and I'm t=
rying to figure out why.=20
When I used a stethescope on the block, everything sounds okay - no rapping=
and the valve train sounds "normal" and there were no weird sounds coming =
from the crank.=20
I guess where I'm going with this is: if piston / head clearance is too tig=
ht, I'll see some sort of indication on the piston, right?=20
TIA for any sage advice.=20
This is my first experience "decking" a block. I'd like to get it right, I =
don't have the resources to start a new block from scratch.=20
Regards,=20
Bob Lang=20
_______________________________________________=20
fot@autox.team.net=20
http://www.fot-racing.com=20
Archive: http://www.team.net/archive=20
comcast.net=20
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<html><body><div style=3D"font-family: Arial; font-size: 12pt; color: #0000=
00"><div aria-label=3D"Compose body">The rattling is likely piston slap on =
cold forged pistons. Did it go away when it warmed up and came back on the =
next cold start ?</div><div aria-label=3D"Compose body">jim</div><div><br><=
/div><hr id=3D"zwchr"><div style=3D"color:#000;font-weight:normal;font-styl=
e:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-s=
ize:12pt;" data-mce-style=3D"color: #000; font-weight: normal; font-style: =
normal; text-decoration: none; font-family: Helvetica,Arial,sans-serif; fon=
t-size: 12pt;"><b>From: </b>"Steve Yott" <tr4@wi.rr.com><br><b>To: </=
b>"Robert Lang" <robertlangtr6@yahoo.com>, "FOT List" <fot@autox.t=
eam.net><br><b>Sent: </b>Wednesday, May 25, 2016 11:27:27 AM<br><b>Subje=
ct: </b>Re: [Fot] TR6 Piston / Head Clearance<br><div><br></div><style>
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</style><div class=3D"Section1"><p class=3D"MsoNormal"><span style=3D"font-=
size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D" data-mce-style=3D"font-size: 11.0pt; font-family: 'Calibri',=
'sans-serif'; color: #1f497d;">I doubt that your .030 squish would cause th=
e rattling as you describe. The deflection caused by the crank, rod a=
nd piston in order to hit the head at .030 would be way up in the rpm=E2=80=
=99s like 8000!</span></p><p class=3D"MsoNormal"><span style=3D"font-size:1=
1.0pt;font-family:"Calibri","sans-serif";
color:#1F497D" data-mce-style=3D"font-size: 11.0pt; font-family: 'Calibri',=
'sans-serif'; color: #1f497d;"> </span></p><p class=3D"MsoNormal"><spa=
n style=3D"font-size:11.0pt;font-family:"Calibri","sans-seri=
f";
color:#1F497D" data-mce-style=3D"font-size: 11.0pt; font-family: 'Calibri',=
'sans-serif'; color: #1f497d;">Did the rattling go away after all the parts=
warmed up and oil was well disbursed or is it still rattling? My fir=
st guess would be either the engine was not pre-oiled or you have loose pis=
ton pin bushings=E2=80=A6. Were the rods rebuilt with new bushings fi=
tted to about .0003? </span></p><p class=3D"MsoNormal"><span style=3D=
"font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D" data-mce-style=3D"font-size: 11.0pt; font-family: 'Calibri',=
'sans-serif'; color: #1f497d;"> </span></p><p class=3D"MsoNormal"><spa=
n style=3D"font-size:11.0pt;font-family:"Calibri","sans-seri=
f";
color:#1F497D" data-mce-style=3D"font-size: 11.0pt; font-family: 'Calibri',=
'sans-serif'; color: #1f497d;">Steve Yott</span></p><p class=3D"MsoNormal">=
<span style=3D"font-size:11.0pt;font-family:"Calibri","sans-=
serif";
color:#1F497D" data-mce-style=3D"font-size: 11.0pt; font-family: 'Calibri',=
'sans-serif'; color: #1f497d;"> </span></p><div><div style=3D"border:n=
one;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in" data-mce-styl=
e=3D"border: none; border-top: solid #B5C4DF 1.0pt; padding: 3.0pt 0in 0in =
0in;"><p class=3D"MsoNormal"><b><span style=3D"font-size:10.0pt;font-family=
:"Tahoma","sans-serif"" data-mce-style=3D"font-size: 10=
.0pt; font-family: 'Tahoma','sans-serif';">From:</span></b><span style=3D"f=
ont-size:10.0pt;font-family:"Tahoma","sans-serif"" data=
-mce-style=3D"font-size: 10.0pt; font-family: 'Tahoma','sans-serif';"> Fot =
[mailto:fot-bounces@autox.team.net] <b>On Behalf Of </b>Robert Lang<br> <b>=
Sent:</b> Wednesday, May 25, 2016 11:29 AM<br> <b>To:</b> FOT List<br> <b>S=
ubject:</b> Re: [Fot] TR6 Piston / Head Clearance</span></p></div></div><p =
class=3D"MsoNormal"> </p><div><div><p class=3D"MsoNormal" style=3D"bac=
kground:white" data-mce-style=3D"background: white;"><span style=3D"font-fa=
mily:"Helvetica","sans-serif";
color:black" data-mce-style=3D"font-family: 'Helvetica','sans-serif'; color=
: black;">Hi,</span></p></div><div id=3D"yui_3_16_0_ym19_1_1464192999183_40=
39"><p class=3D"MsoNormal" style=3D"background:white" data-mce-style=3D"bac=
kground: white;"><span style=3D"font-family:"Helvetica","san=
s-serif";
color:black" data-mce-style=3D"font-family: 'Helvetica','sans-serif'; color=
: black;"> </span></p></div><div id=3D"yui_3_16_0_ym19_1_1464192999183=
_4040"><p class=3D"MsoNormal" style=3D"background:white" data-mce-style=3D"=
background: white;"><span style=3D"font-family:"Helvetica","=
sans-serif";
color:black" data-mce-style=3D"font-family: 'Helvetica','sans-serif'; color=
: black;">Where I was going with the query was this: I had a late block "de=
cked" with the intent of making the deck flat. The machinist took of .032 t=
o accomplish the goal. With a head gasket installed and the head torqued, t=
he clearance in the squish area is .030.</span></p></div><div id=3D"yui_3_1=
6_0_ym19_1_1464192999183_4041"><p class=3D"MsoNormal" style=3D"background:w=
hite" data-mce-style=3D"background: white;"><span style=3D"font-family:&quo=
t;Helvetica","sans-serif";
color:black" data-mce-style=3D"font-family: 'Helvetica','sans-serif'; color=
: black;">I had initially wanted only about .025 removed, but we had to sha=
ve an extra .007 to get rid of the fire ring cuts.</span></p></div><div id=
=3D"yui_3_16_0_ym19_1_1464192999183_4042"><p class=3D"MsoNormal" style=3D"b=
ackground:white" data-mce-style=3D"background: white;"><span style=3D"font-=
family:"Helvetica","sans-serif";
color:black" data-mce-style=3D"font-family: 'Helvetica','sans-serif'; color=
: black;">On initial startup, the motor sounded like it might be "rattling"=
and I'm trying to figure out why.</span></p></div><div id=3D"yui_3_16_0_ym=
19_1_1464192999183_4043"><p class=3D"MsoNormal" style=3D"background:white" =
data-mce-style=3D"background: white;"><span style=3D"font-family:"Helv=
etica","sans-serif";
color:black" data-mce-style=3D"font-family: 'Helvetica','sans-serif'; color=
: black;">When I used a stethescope on the block, everything sounds okay - =
no rapping and the valve train sounds "normal" and there were no weird soun=
ds coming from the crank.</span></p></div><div id=3D"yui_3_16_0_ym19_1_1464=
192999183_4055"><p class=3D"MsoNormal" style=3D"background:white" data-mce-=
style=3D"background: white;"><span style=3D"font-family:"Helvetica&quo=
t;,"sans-serif";
color:black" data-mce-style=3D"font-family: 'Helvetica','sans-serif'; color=
: black;">I guess where I'm going with this is: if piston / head clearance =
is too tight, I'll see some sort of indication on the piston, right?</span>=
</p></div><div id=3D"yui_3_16_0_ym19_1_1464192999183_4056"><p class=3D"MsoN=
ormal" style=3D"background:white" data-mce-style=3D"background: white;"><sp=
an style=3D"font-family:"Helvetica","sans-serif";
color:black" data-mce-style=3D"font-family: 'Helvetica','sans-serif'; color=
: black;">TIA for any sage advice.</span></p></div><div><p class=3D"MsoNorm=
al" style=3D"background:white" data-mce-style=3D"background: white;"><span =
style=3D"font-family:"Helvetica","sans-serif";
color:black" data-mce-style=3D"font-family: 'Helvetica','sans-serif'; color=
: black;">This is my first experience "decking" a block. I'd like to get it=
right, I don't have the resources to start a new block from scratch.</span=
></p></div><div><p class=3D"MsoNormal" style=3D"background:white" data-mce-=
style=3D"background: white;"><span style=3D"font-family:"Helvetica&quo=
t;,"sans-serif";
color:black" data-mce-style=3D"font-family: 'Helvetica','sans-serif'; color=
: black;">Regards,</span></p></div><div><p class=3D"MsoNormal" style=3D"bac=
kground:white" data-mce-style=3D"background: white;"><span style=3D"font-fa=
mily:"Helvetica","sans-serif";
color:black" data-mce-style=3D"font-family: 'Helvetica','sans-serif'; color=
: black;">Bob Lang</span></p></div><div id=3D"yui_3_16_0_ym19_1_14641929991=
83_3788"><p class=3D"MsoNormal" style=3D"background:white" data-mce-style=
=3D"background: white;"><span style=3D"font-family:"Helvetica",&q=
uot;sans-serif";
color:black" data-mce-style=3D"font-family: 'Helvetica','sans-serif'; color=
: black;"> </span></p></div></div></div><br>__________________________=
_____________________<br>fot@autox.team.net<br><div><br></div>http://www.fo=
t-racing.com<br><div><br></div>Donate: http://www.team.net/donate.html<br>A=
rchive: http://www.team.net/archive<br>Forums: http://www.team.net/forums<b=
r>Unsubscribe/Manage: http://autox.team.net/mailman/options/fot/toodamnfunk=
y@comcast.net<br><div><br></div><br></div><div><br></div></div></body></htm=
l>
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_______________________________________________
fot@autox.team.net
http://www.fot-racing.com
Archive: http://www.team.net/archive
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