Welcome to AutoBoardz.com!
FAQFAQ      ProfileProfile    Private MessagesPrivate Messages   Log inLog in

1966 chevy engine oil leak fix plan

  
   AutoBoardz (Home) -> Classic Trucks RSS
Next:  2006 Pathfinder - where is pre-wired N-Bus locate..  
Author Message
Charlie18

External


Since: Jun 09, 2004
Posts: 13



(Msg. 1) Posted: Wed Jul 19, 2006 4:59 am
Post subject: 1966 chevy engine oil leak fix plan
Archived from groups: alt>autos>classic-trucks, others (more info?)
I have a 1966 Chevy II with a 6 cylinder engine in it. The engine has
some small oil leaks that I want to correct. It's been over 30 years
since I last rebuilt an engine and I don't recall the details of that
effort. Of course good ol Dad was there then too. I'm most curious about
how to correct the rear seal of the crankshaft. Below I've listed my
plans and some questions I already have.

Please advise me on gasket selection, procedure and anything else you
think would help.


Planned Gaskets/Seals to be replaced.
1. Gasket for valve cover.
2. Gasket for fuel pump.
3. Gasket for timing chain cover.
4. Seal in timing chain cover for harmonic balance/crankshaft.
5. Gasket for oil pan.
5. Seal at rear of crankshaft.


Questions.
1. Regarding the Seal, for the harmonic balance, in the timing chain cover,
a. should I precoat the seal-harmonic balance mating surface with
anything during assembly?
b. is a glue/sealant applied to the seal-timing cover mating surface
during assembly?

2. Regarding the Seal at the rear of the crankshaft,
a. can this be easily replaced? I'm suspecting that replacing this
would require loosening the bearing journals holding the crankshaft in
the block and that would be too risky.


Thanks,
Charlie

 >> Stay informed about: 1966 chevy engine oil leak fix plan 
Back to top
Login to vote
Bret Ludwig

External


Since: Jul 25, 2005
Posts: 60



(Msg. 2) Posted: Wed Jul 19, 2006 5:12 am
Post subject: Re: 1966 chevy engine oil leak fix plan [Login to view extended thread Info.]
Archived from groups: alt>autos>classic-trucks, others (more info?)
Charlie wrote:
> I have a 1966 Chevy II with a 6 cylinder engine in it. The engine has
> some small oil leaks that I want to correct. It's been over 30 years
> since I last rebuilt an engine and I don't recall the details of that
> effort. Of course good ol Dad was there then too. I'm most curious about
> how to correct the rear seal of the crankshaft. Below I've listed my
> plans and some questions I already have.
>
> Please advise me on gasket selection, procedure and anything else you
> think would help.
>
>

First step: obtain and read dervice manual.

Second, follow procedure therein.

 >> Stay informed about: 1966 chevy engine oil leak fix plan 
Back to top
Login to vote
nonelson

External


Since: Nov 12, 2004
Posts: 805



(Msg. 3) Posted: Wed Jul 19, 2006 9:55 am
Post subject: Re: 1966 chevy engine oil leak fix plan [Login to view extended thread Info.]
Archived from groups: alt>autos>classic-trucks, others (more info?)
In article <O6pvg.12791$6w.7721@fed1read11>,
Charlie <cwilliamp RemoveThis @yahoo.com> wrote:

<snip>

> Questions.
> 1. Regarding the Seal, for the harmonic balance, in the timing chain cover,
> a. should I precoat the seal-harmonic balance mating surface with
> anything during assembly?

Yes. Motor oil.
If the snout of the harmonic balancer has a groove worn in it,
install a speedy sleeve.

> b. is a glue/sealant applied to the seal-timing cover mating surface
> during assembly?

Depends on the seal. Some come with a bead of sealer already
applied, if not, I'd use #2 Permatex.
>
> 2. Regarding the Seal at the rear of the crankshaft,
> a. can this be easily replaced?

Depends on your definition of easy.

> I'm suspecting that replacing this
> would require loosening the bearing journals holding the crankshaft in
> the block and that would be too risky.

If the original/replacement seal is a rope seal, loosening the
crank and allowing it to drop can make things easier, the crank
won't drop until the transmission is disconnected though. Not a
big deal if it's an automatic, bigger deal if it's a manual trans.
If a rubber seal, they go in and out pretty easy.

Nothing risky about dropping a crankshaft a few thousandths, man
put it together, man can take it apart.
 >> Stay informed about: 1966 chevy engine oil leak fix plan 
Back to top
Login to vote
Charlie18

External


Since: Jun 09, 2004
Posts: 13



(Msg. 4) Posted: Wed Jul 19, 2006 9:10 pm
Post subject: Re: 1966 chevy engine oil leak fix plan [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
Thanks for the reply.

The engine will be out of the car and seperated from the transmission
and clutch assembly.

If I loosen the main being journals of the crank to make space for
replacing the rear seal does that create a large risk of future main
bearing problems?

Charlie

aarcuda69062 wrote:
> In article <O6pvg.12791$6w.7721@fed1read11>,
> Charlie <cwilliamp.RemoveThis@yahoo.com> wrote:
>
> <snip>
>
>>Questions.
>>1. Regarding the Seal, for the harmonic balance, in the timing chain cover,
>> a. should I precoat the seal-harmonic balance mating surface with
>>anything during assembly?
>
>
> Yes. Motor oil.
> If the snout of the harmonic balancer has a groove worn in it,
> install a speedy sleeve.
>
>
>> b. is a glue/sealant applied to the seal-timing cover mating surface
>>during assembly?
>
>
> Depends on the seal. Some come with a bead of sealer already
> applied, if not, I'd use #2 Permatex.
>
>>2. Regarding the Seal at the rear of the crankshaft,
>> a. can this be easily replaced?
>
>
> Depends on your definition of easy.
>
>
>>I'm suspecting that replacing this
>>would require loosening the bearing journals holding the crankshaft in
>>the block and that would be too risky.
>
>
> If the original/replacement seal is a rope seal, loosening the
> crank and allowing it to drop can make things easier, the crank
> won't drop until the transmission is disconnected though. Not a
> big deal if it's an automatic, bigger deal if it's a manual trans.
> If a rubber seal, they go in and out pretty easy.
>
> Nothing risky about dropping a crankshaft a few thousandths, man
> put it together, man can take it apart.
 >> Stay informed about: 1966 chevy engine oil leak fix plan 
Back to top
Login to vote
v8z

External


Since: Mar 01, 2006
Posts: 22



(Msg. 5) Posted: Thu Jul 20, 2006 12:45 pm
Post subject: Re: 1966 chevy engine oil leak fix plan [Login to view extended thread Info.]
Archived from groups: alt>autos>classic-trucks, others (more info?)
Since you're already doing the work of pulling the motor and getting it on
a stand, and since you're pulling the pan and timing cover anyway to replace
gaskets, what better opportunity to put in new rod / main bearings, oil
pump, and timing set. Those parts are relatively inexpensive - should go
less than $150 - and if you do it, you'll be sure of the bottom end for
years to come.

If you decide not to go that route, and just replace the seals and gaskets,
the operative word is cleanliness. Before cracking the mains caps, be sure
everything is spotlessly clean, to avoid the chance of any particles getting
trapped between the crank and bearings.

And ditto on the balancer repair sleeve - on an engine of that vintage, its
almost certain that the soft iron snout of the balancer will have a groove
in it. The last two I built, a 77 4bolt main 350, and an 85 4.3 v6 both had
worn balancers.

--
V8Z
Chevy V6 powered '66 Datsun Roadster
http://www.mildevco.net/chevypowereddatsuns/
Chevy V8 powered '77 Datsun 280Z
http://www.mildevco.net/chevypowereddatsuns/


"Charlie" <cwilliamp DeleteThis @yahoo.com> wrote in message
news:skDvg.12807$6w.7575@fed1read11...
> Thanks for the reply.
>
> The engine will be out of the car and seperated from the transmission
> and clutch assembly.
>
> If I loosen the main being journals of the crank to make space for
> replacing the rear seal does that create a large risk of future main
> bearing problems?
>
> Charlie
>
> aarcuda69062 wrote:
> > In article <O6pvg.12791$6w.7721@fed1read11>,
> > Charlie <cwilliamp DeleteThis @yahoo.com> wrote:
> >
> > <snip>
 >> Stay informed about: 1966 chevy engine oil leak fix plan 
Back to top
Login to vote
alvinj

External


Since: Jan 08, 2004
Posts: 7



(Msg. 6) Posted: Thu Jul 20, 2006 6:55 pm
Post subject: Re: 1966 chevy engine oil leak fix plan [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
Cool thread. Smile

Alvin in AZ ('75 F150 360 T-1Cool
 >> Stay informed about: 1966 chevy engine oil leak fix plan 
Back to top
Login to vote
WoogerooŽ

External


Since: May 23, 2005
Posts: 12



(Msg. 7) Posted: Mon Jul 24, 2006 12:41 am
Post subject: Re: 1966 chevy engine oil leak fix plan [Login to view extended thread Info.]
Archived from groups: alt>autos>classic-trucks (more info?)
all of the baords below are free to register and use.

http://www.stovebolt.com all gm trucks pre-1973 / forums / engine and
driveline

The stovebolt page... has a great links page, go to the site, go to
links, then click on parts, all the parts vendors are listed there.

http://www.chevytalk.com - forums / 60-66 trucks area

http://www.67-72chevytruck.com - forums / 60-66 trucks message board
section

-WoogerooŽ

------------------------------------------------
woogerooNOBS.DeleteThis@yahoo.com <- remove NOBS to send email.
------------------------------------------------
 >> Stay informed about: 1966 chevy engine oil leak fix plan 
Back to top
Login to vote
Display posts from previous:   
Related Topics:
70 Chevy 350 - Looking for a passenger rear qtr panel for a fleetside C/10 ...anyone have one for sale ?

Gas tank, 58 chevy pu - Hello, I have a 58 chevy pu with a 79 camero clip on the front. I still have the original springs out back with the camero rear end mounted to them. What I would like to do next is get the fuel tank out of the cab. Just looking for ideas as what would...

55-57 chevy truck - looking for a pair of front fenders for 55-57 chevy truck, any leads would be appreciated

Chevy 67-72 frames - Hi, For the frame in the chevys from 67-72, did the 3/4-ton and 1-ton use the same frame? How about for the 4WD trucks? Thanks, Vic

60 to 66 chevy trucks - i have a 1960 chevy truck and i wanna put disk brakes on it and i was told that 73 to 87 will work but no one will tell me what all i need to change all i know it that the truck says 60 on the title and it has drum brakes now i know that been fix up abou...
   AutoBoardz (Home) -> Classic Trucks All times are: Pacific Time (US & Canada) (change)
Page 1 of 1

 
 You can post new topics in this forum
You can reply to topics in this forum
You can edit your posts in this forum
You can delete your posts in this forum
You can vote in polls in this forum



[ Contact us | Terms of Service/Privacy Policy ]