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Re: Cheap Junk 1971 Build

Posted: Sat Apr 29, 2017 9:01 pm
by oprn
When I opened my gasket set for this engine the plastic vibration dampeners that go on the main bearing bolts were not supplied. A couple of enquiries on another site led me to a supplier of these little plastic bits... at $7+ each! So $7 x 6 + shipping + exchange on the US dollar and we are up to over $60! For 6 little plastic sleeves!! Hmmm... Gotta be another way...

Here is what I came up with. $7 for a hundred!
rubbers a.jpg
Fit nicely!
rubbers 1a.jpg
In fact if you poke them a bit they will slide right inside the holes so I am thinking for the price I will slide one in each half and leave one in the center on each bolt.
rubbers 2a.jpg

Re: Cheap Junk 1971 Build

Posted: Sat Apr 29, 2017 9:06 pm
by oprn
Sorry, that should read $60 for the plastic bits! Not sure how to edit on this site.

Never mind! I found it! :oops:

Re: Cheap Junk 1971 Build

Posted: Sat Apr 29, 2017 9:08 pm
by Piledriver
Impressed by the great ingenuity, but for some reason while looking at the pictures I kept thinking "OwOwOwOw..." :twisted:

Each post you make has 4 icons in the upper right... Left one sorta looks like a pencil... That's edit.

Re: Cheap Junk 1971 Build

Posted: Sat Apr 29, 2017 9:15 pm
by oprn
Ha Ha! Ya! Got any daughters of dating age? I have some left over... :shock:

Re: Cheap Junk 1971 Build

Posted: Sat Apr 29, 2017 10:13 pm
by Piledriver
At least it beats the traditional way of castrating sheep...
Still done that way in some parts of the old world. think :mrgreen:

Re: Cheap Junk 1971 Build

Posted: Sun Apr 30, 2017 9:10 am
by Clatter
OwOwOwOwOw...!!! :shock:

Look what my thread has come to.. :roll:

:P

Never really sure the whole deal with the 'vibration dampener' thing...

Did the case thru-bolts really need dampening?

I'm still betting they were an ease of assembly thing..

I mean, what are the actual symptoms/suffering these fixed?

Can't be nearly as bad as for calves under 250 pounds.. :mrgreen:

Re: Cheap Junk 1971 Build

Posted: Sun Apr 30, 2017 9:08 pm
by oprn
Ooops! Sorry Clatter!

I didn't mean to turn your good thread into a lesson on how to discourage would be suitors of your daughters!
(It may take some 'splainin' to city kids but out here in cattle country a pre-date initiation threat with the plyers and rubber rings changes minds real quick!) :D

Back on topic, the replies I got on another forum indicated there was a need to stop any harmonic effects with those bolts. I really don't know so I erred on the side of caution.

In any event it will eliminate any potential lost sleep.

With the bolts too!! :mrgreen:

Re: Cheap Junk 1971 Build

Posted: Sun Apr 30, 2017 9:22 pm
by oprn
Just to give you an idea of the potential for trouble I could be facing without those handy little latex rings...

Re: Cheap Junk 1971 Build

Posted: Mon May 01, 2017 7:00 pm
by theKbStockpiler
Are those A/C line O rings? The picture loaded late. :oops: Would fat O Rings have worked?

Re: Cheap Junk 1971 Build

Posted: Mon May 01, 2017 7:44 pm
by oprn
theKbStockpiler wrote: Mon May 01, 2017 7:00 pm Are those A/C line O rings? The picture loaded late. :oops: Would fat O Rings have worked?
Nope. The first picture tells exactly what they are. Yes I believe fat O rings would work too.

Re: Cheap Junk 1971 Build

Posted: Mon May 01, 2017 7:52 pm
by oprn
Back on a serious note: Is it normal for the cam thrust bearing to be tight? I mean not just no clearance but... tight? Non sure whether to trim the cam thrust surface a bit or sand the bearing.

Re: Cheap Junk 1971 Build

Posted: Mon May 01, 2017 11:59 pm
by Piledriver
Sand the bearing, BUT--- Install the cam and bearings with the block snugged up around the cam at least, and give the cam a love tap forward/back first. (brass drift, doesn't take much to seat things)

THEN sand on 1000 grit wet or dry on a glass plate to low end of the spec.

Re: Cheap Junk 1971 Build

Posted: Tue May 02, 2017 5:36 am
by sideshow
Don't sand the bearing! Don't cut the case, use a hammer instead with the cam plug and oil pump out.
Large brass drift is the tool of choice, not sandpaper.

Re: Cheap Junk 1971 Build

Posted: Tue May 02, 2017 10:49 am
by Piledriver
Its usually not needed, but sometimes just "seating" it doesn't provide enough.

Re: Cheap Junk 1971 Build

Posted: Tue May 09, 2017 12:40 pm
by oprn
Finally seeing my way clear to get back to this engine build and now it's time to plant the potatoes! Maybe tonight I can give it a love tap and see if it looseness up a bit.