[Shotimes] RE: Q on installing pistons

Fri, 1 Oct 2004 20:28:31 -0700 (PDT)

Everyone
Thanks for your help. I have 3 pistons installed so I
know I am doing it properly. I did notice that it was
getting more difficult to crank the motor which I
attributed to the new rings. I thought that it was a
good thing. :)

As I called it quits for the day, I remembered that I
checked everything except for the orientation of the
oil control ring for pistons 2 and 3 (groove faces
down on the Hastings). I am 99.9% sure they are fine
but for peace of mind, I will probably remove them
tomorrow just to check (easier now than later).
Concerning my 3 piece oil ring-It is probably in my
best interest to see if I can increase the distance
between the gaps of each ring. My uneducated guess was
that blowby past the bottom ring wouldn't matter as
much as blowby past the oil control ring and the
compression ring but I should probably increase the
distance between the gaps on each ring)

I hate to think that anyone is learning anything from
me (haha) but I found it easier to place the ring
compressor on the piston with the piston skirt sitting
partially in the bore. Hands down, this beats trying
to hold the piston with one hand, holding the
compressor with the other and finding a way to crank
the compressor closed while everything is oily and
slippery.

..am using 3/8" fuel line on the rod bolts but one
piece keeps slipping off and falling to the ground. If
only I had more hands. :)

So as it stands now, I have 3 pistons installed and 6
to be installed tomorrow. :)

It's funny-I have gone so overboard making sure that
everything is clean that I have created the largest
toxic waste mess of fresh oil, WD40, assembly lube and
brake cleaner. Clean? yes-Messy? Very!

Ian

--- Robert Bruce <rbruce@bellatlantic.net> wrote:

> 
> Ian,
> 
> You're worrying way too much.  Your description
> sounds fine.  I have built
> many motors over the years & believe your
> description to be just fine.  Your
> gap description is okay, no problems.  The comment 
> of the hammer handle is
> proper also.  A little oil and tap them home.  The
> biggest concern should be
> an accidental knick on the crank.  Be patient and
> enjoy the experience.
> 
> My crank bearing arrived today, so I will be doing
> the same project
> tomorrow!  :-)
> 
> Robert Bruce
> 93 atx street
> 92 track
> 
> 
> -----Original Message-----
> From: Ian Fisher [mailto:dataflash@yahoo.com]
> Sent: Friday, October 01, 2004 12:49 PM
> To: TechSHO@topica.com; shotimes@autox.team.net
> Subject: Q on installing pistons
> 
> 
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> 
> I installed a piston and rod today. How easily
> should
> the piston "fall" into the bore as it leaves the
> ring
> compressor? And if it makes some noises, that's ok,
> right? (I think it was the compressor buckling since
> it's just a thin aluminum band)
> 
> I must have taken the piston out of the compressor
> about 20 times to see if I had broken any rings or
> shifted them too much. I am just overly paranoid.
> 
> Rings and bore were oiled so that's not a problem. I
> had to use the wooden handle of a rubber mallet to
> heavily tap the piston down the bore. I assume
> that's
> ok?
> 
> Now that it's on the crank, I can rotate the crank
> and
> everything moves easily, nothing seems caught up on
> anything. I just don't know how it should "feel" to
> install a piston properly. I don't want to break a
> ring and not find out until the engine is running in
> the car.
> 
> Oh-the three piece oil ring on the bottom-Is it ok
> if
> the gaps are closer than 90 degrees apart for all 3
> pieces? They are more like 15 degrees apart but I
> can't seem to move them easily. The other two rings
> are spaced evenly with regard to their ring gaps so
> that shouldn't be a problem
> 
> thanks
> Ian
> blue 3.2, V1, 5 to go
> 
> 
> 
> Once the piston was in the bore and it was
> 
> 
> 
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