![]() |
![]() |
#1 |
Registered User
Join Date: Aug 2009
Location: Red Wing Mn
Posts: 526
|
307 questions
I plan on putting in a new Oil pump , timing chain and gears , and main bearings in this weekend. If any one has any idea how to do these things. Could you give me a little insight. This is the first time i have ever worked on a motor.
Right now i have the motor on the engine stand with the oil pan off. Will i have to rotate the motor to install the main bearings or can i do it form the bottom up. I'm afraid my cheap piece of SH** engine stand might not rotate for me. Any help will be appreciated or if you could just come over and do it for me that would even be better! haha |
![]() |
![]() |
![]() |
#2 |
Registered User
Join Date: Oct 2001
Location: Grapevine, Tx.
Posts: 2,142
|
Re: 307 questions
kcfirstbuild
When I first started rebuiding motors I got a hold of a book by David Vizzard He has a way with explaining the process in laymans terms His books are everywhere I have even seen them in local libraries Here is a link to one I would suggest that would probably answer alot of your questions These books are well worth the small investment http://www.allbookstores.com/book/97...ock_Chevy.html
__________________
John Hutchison Grapevine,Texas 68 1/2 t swb 68 Mustang 69 Jaguar 71 1/2 t swb 88 Supra CompTs6m 93 Escort GT 2005 Corolla XRS |
![]() |
![]() |
![]() |
#3 |
Registered User
![]() Join Date: Aug 2001
Location: SOMERSET KY.
Posts: 6,427
|
Re: 307 questions
EXELLANT ADVICE.. AN OLD GUY I USED TO WORK WITH WHEN I WAS AN APPRENTICE ONCE TOLD ME... RILEY (HE ALWAYS CALLED ME RILEY) "ALL THE WORLDS KNOWLEDGE IS CONTAINED IN PRINT". READ IT AT LEAST TWICE, LEARN IT, THEN DO IT.
![]()
__________________
junkyardjohn 69 1 TON TOW TRUCK // 84 4WD CUCV BLAZER// 85 1 TON 4WD STAKE TRUCK// 86 M1031 5/4 TON 4WD CUCV// ALOT OF OLD TRUCKS FOR ONE OLD MAN TO DRIVE. ![]() LIFE MEMBER OF P.E.T.A (PEOPLE EATING TASTY ANIMALS) DON'T RENT U-HAUL ALWAYS TELL THE TRUTH IT WILL AMAZE PART OF THE PEOPLE & ASTONISH THE REST |
![]() |
![]() |
![]() |
#4 |
Junior Member
Join Date: Dec 2006
Location: Southeast Missouri
Posts: 2,436
|
Re: 307 questions
Yes, it is best if you rotate the engine so the bottom is up to replace the main bearings.
One of our engine stands is not the best so one of us usually holds the front of the engine to help rotate the engine while the other does the rotating from the back. Danny
__________________
'67 Chevy C-20 short stepper - build complete, 454/SM-465. '75 C-30 Single Cab DRW-350 small block/NP-435. '77 GMC-6500 Dump Truck, 427 Tall Deck. '92 GMC K-3500 Duallie, 454/4L80E. |
![]() |
![]() |
![]() |
#5 |
Registered User
Join Date: Aug 2009
Location: Red Wing Mn
Posts: 526
|
Re: 307 questions
Ill try and find the book. Thank everyone !
|
![]() |
![]() |
![]() |
#6 |
Registered User
Join Date: Jul 2007
Location: Salina, Kansas
Posts: 1,998
|
Re: 307 questions
ya beause it will be hard to apply assembly lube in the main bearings without them falling out while you reapply the crank
__________________
1972 C-10...402/400..flowmaster 40 series 1967 Mustang 347 stroker/C-4 1966 Mustang 289/3-speed 2013 Mustang V6/6speed w/300 ponies I may be 23, but i sure do knows 67-72s are sexy! Its not MPG its smiles per gallon! build started 11/25/08 build thread: http://67-72chevytrucks.com/vboard/s....php?p=2993796 |
![]() |
![]() |
![]() |
#7 |
Registered User
Join Date: May 2010
Location: Denton, TX
Posts: 13
|
Re: 307 questions
Rotate the motor and apply lots and lots of assembly lube. Also, try to remember the order the bearing caps were in. Enjoy!
|
![]() |
![]() |
![]() |
#8 |
Registered User
Join Date: Aug 2009
Location: Red Wing Mn
Posts: 526
|
Re: 307 questions
Ah man i have to take the Crank shaft out ??? Is that hard or no?
|
![]() |
![]() |
![]() |
#9 |
Java Mechanic
Join Date: Jun 2005
Location: Martinsburg, WV
Posts: 6,764
|
Re: 307 questions
!
Definetely start by reading up. 1) You lack some of the basic knowledge needed. Reasearch first and cry less later. Please don't take that as rude -- I ruined the first motor I tried to rehab because I was in a hurry to jump in and didn't learn first. Like to save another from that joy... 2) If you are replacing the main journal bearings I would (at an absolute minimum) replace the rod cap bearings and main seals as well. 3) Pay heed to the earlier comment: get the main caps and rod caps back on exactly where they came off. You need to label them (or put them someplace they won't be disturbed) because you can't see the tiny differences that will jump up and bite you if you scramble them. 4) There is no such thing as too much assembly lube or too little dirt. Clean all fasteners and chase the threads with dies and taps (the correct ones!) 5) Get crush gauges and double check that everything is to spec when it is torqued down. 6) Find a realy anal friend to pester you about all the measurements and specs along the way. 7) Don't drop the crank on your fingers when you set it back in place. 8) If you are leaving the motor for longer than to turn around and grap something cover it up. 9) Verify all of the fastener tourques at least twice. Leave one loose and it will spin the bearing out -- crank one down to hard and somehting real spectacular (and quite unpleasent) will happen. :P It's really not all that hard but attention to detial and patiance is absolutely critical.
__________________
Keith 11 Lincoln MKT -- Momma's wagon ![]() 13 G37xS -- middle age crazy car 68 C20 Fleetside -- RIP Decorating the whole town up at a cost of $27 .... |
![]() |
![]() |
![]() |
#10 |
Registered User
Join Date: May 2010
Location: Denton, TX
Posts: 13
|
Re: 307 questions
By yourself? Kind of. Two people make it really easy. Remove timing cover and chain. To replace the main bearings disconnect each connecting rod from the crank. You have to rotate the crank by hand (torque wrench or breaker bar makes this easy) to be able to disconnect all rods. Another important detail is to make sure you replace each rod end with it's respective rod (i.e. piston #1's rod needs to be connected back to the rod end originally on it). Also, when you have the crank off stand it up vertically with the flywheel side down; laying it down horizontally is a no-no.
|
![]() |
![]() |
![]() |
#11 |
Java Mechanic
Join Date: Jun 2005
Location: Martinsburg, WV
Posts: 6,764
|
Re: 307 questions
Don't drop it either. I've seen the results of that.
Yikes.. :P
__________________
Keith 11 Lincoln MKT -- Momma's wagon ![]() 13 G37xS -- middle age crazy car 68 C20 Fleetside -- RIP Decorating the whole town up at a cost of $27 .... |
![]() |
![]() |
![]() |
#12 |
Registered User
Join Date: Aug 2009
Location: Red Wing Mn
Posts: 526
|
Re: 307 questions
NO offense taken, I really have no clue what im doing when it comes to motors. rod cap bearings ? I bought a Main bearing set is that it or is that something else ? I'm hoping to get some help from someone that knows what they are doing.
|
![]() |
![]() |
![]() |
#13 |
Java Mechanic
Join Date: Jun 2005
Location: Martinsburg, WV
Posts: 6,764
|
Re: 307 questions
You will have to rotate the motor.
Get organized first. Locate all of the tools you need and all of the materials and make sure you have a clean space to lay out the parts. You will want the following:
You really need the service manual (or some similar source) to get the correct torque specs and bearing clearances. Read this: http://www.circletrack.com/tipstrick...ips/index.html each bearing should be installed twice. People can and do skip the first step, where you assemble and torque down with a crush gauge in between, but if you have a funky bearing or a hooved out journal; you'll want to know now, not somewhere down the road. These links should be very helpful. http://www.ehow.com/how_6184848_chec...es-engine.html http://www.aa1car.com/library/ar797.htm http://www.chevyhiperformance.com/te...nce/index.html
__________________
Keith 11 Lincoln MKT -- Momma's wagon ![]() 13 G37xS -- middle age crazy car 68 C20 Fleetside -- RIP Decorating the whole town up at a cost of $27 .... Last edited by panhandler62; 05-26-2010 at 12:04 AM. |
![]() |
![]() |
![]() |
#14 |
Registered User
Join Date: Aug 2009
Location: Red Wing Mn
Posts: 526
|
Re: 307 questions
Do I need rear main seals then too ?? And the rod connecting bearings are they a must ??
|
![]() |
![]() |
![]() |
#15 |
Java Mechanic
Join Date: Jun 2005
Location: Martinsburg, WV
Posts: 6,764
|
Re: 307 questions
You have to take all of the rod caps off to pull the crank. It's not generaly a good idea to re-use the old bearings. It's comming apart anyway and bearings aren't all that expensive.
http://www.pawengineparts.com/shoppi...717&catid=1557 That's less than $100 for all this stuff.
__________________
Keith 11 Lincoln MKT -- Momma's wagon ![]() 13 G37xS -- middle age crazy car 68 C20 Fleetside -- RIP Decorating the whole town up at a cost of $27 .... |
![]() |
![]() |
![]() |
#16 |
Registered User
Join Date: May 2010
Location: ft smith arkansas
Posts: 131
|
Re: 307 questions
You dont have to pull the crank just "roll" the bearings and rear seal in. gettin the crank back in with 8 rods hanging in the way is a pain in the butt. If i were in your shoes i would find a friend with some experience but I will give any advice you need. And yes you would be wasting your time re using the rod bearings.
__________________
1972 super cheyenne 1970 Suburb Last edited by trusty72; 05-26-2010 at 11:45 PM. |
![]() |
![]() |
![]() |
#17 |
Registered User
Join Date: Jul 2007
Location: Salina, Kansas
Posts: 1,998
|
Re: 307 questions
if you put it on engine stand one person can do it.. just wear old clothes i found out cuz then u dont have to worry about having a rag with u just wipe the lube and oil on your clothes.. im building a 347 stroker for my 67 stang and i did it all myself
__________________
1972 C-10...402/400..flowmaster 40 series 1967 Mustang 347 stroker/C-4 1966 Mustang 289/3-speed 2013 Mustang V6/6speed w/300 ponies I may be 23, but i sure do knows 67-72s are sexy! Its not MPG its smiles per gallon! build started 11/25/08 build thread: http://67-72chevytrucks.com/vboard/s....php?p=2993796 |
![]() |
![]() |
![]() |
#18 |
Registered User
Join Date: Aug 2009
Location: Red Wing Mn
Posts: 526
|
Re: 307 questions
ok will get new rod bearings, but what is a rod cap ?
|
![]() |
![]() |
![]() |
#19 |
Registered User
Join Date: Oct 2001
Location: Grapevine, Tx.
Posts: 2,142
|
Re: 307 questions
Google is you friend
__________________
John Hutchison Grapevine,Texas 68 1/2 t swb 68 Mustang 69 Jaguar 71 1/2 t swb 88 Supra CompTs6m 93 Escort GT 2005 Corolla XRS |
![]() |
![]() |
![]() |
#20 |
Registered User
Join Date: Aug 2009
Location: Red Wing Mn
Posts: 526
|
Re: 307 questions
Got the rod bushings from work today. here is my check list
Rear main bearing set rod bearings Rear main seal Assembly lube oil pump Mr gasket ultra seal pan gasket timing gears and chain timing cover set Black RTV Hows that sounds ? |
![]() |
![]() |
![]() |
#21 |
Registered User
Join Date: Jul 2007
Location: Salina, Kansas
Posts: 1,998
|
Re: 307 questions
dont forget to lube the pushing before u put piston on
__________________
1972 C-10...402/400..flowmaster 40 series 1967 Mustang 347 stroker/C-4 1966 Mustang 289/3-speed 2013 Mustang V6/6speed w/300 ponies I may be 23, but i sure do knows 67-72s are sexy! Its not MPG its smiles per gallon! build started 11/25/08 build thread: http://67-72chevytrucks.com/vboard/s....php?p=2993796 |
![]() |
![]() |
![]() |
#22 | |
just can't cover up my redneck
Join Date: May 2004
Location: Columbus OH
Posts: 11,414
|
Re: 307 questions
I just read through this whole thing.....and not one person said "Why?" or at least "How do you know you need new bearings?"
It is not likely that you wold really need to replace the bearings and not need to have something done to the crank "while its out". If the bearings are truly damaged, so it the crank. If they are not damaged, why are we even talking about this? Apparently we don't even know? Are we just "guessing" that this needs to be done? Trying to "roll" bearings in place (like a rear main seal) is just plain crazy talk. Whether it can be done or not is irrelevant, it shouldn't. If you are going to take it apart... take it apart, fiddling around trying to "Half way" take it partly apart, is just wasting money. You are gaining nothing...and wasting money for bearings, gaskets, etc. that will have a short life. I have no issue with "learning as you go", but learn it right in the first place. This is not an area for "short-cuts"....especially for a rookie. This is "heart surgery" .....let's not do it with a butter knife.....and on a heart that actually needs it.....
__________________
You can review the site's rules here. Quote:
Bad planning on your part does not necessarily constitute an instant emergency on my part.... The great thing about being a pessimist is that you are either pleasantly surprised or right. ![]() Last edited by LONGHAIR; 05-27-2010 at 08:41 PM. |
|
![]() |
![]() |
![]() |
#23 |
Registered User
Join Date: Aug 2009
Location: Red Wing Mn
Posts: 526
|
Re: 307 questions
I was told to put in new main bearings in by a couple people since i have the motor out and on a stand. I would hate to pull the motor back out and do it all over again. And same holds true with doing it the right way. I have a couple people that are going to help me out and do it right.
|
![]() |
![]() |
![]() |
#24 |
Registered User
Join Date: Jul 2007
Location: Salina, Kansas
Posts: 1,998
|
Re: 307 questions
i was told whenever you rebuild an engine you install new bearings if they are bad or not.. also to check crank to see if it needs turned...
__________________
1972 C-10...402/400..flowmaster 40 series 1967 Mustang 347 stroker/C-4 1966 Mustang 289/3-speed 2013 Mustang V6/6speed w/300 ponies I may be 23, but i sure do knows 67-72s are sexy! Its not MPG its smiles per gallon! build started 11/25/08 build thread: http://67-72chevytrucks.com/vboard/s....php?p=2993796 |
![]() |
![]() |
![]() |
#25 | ||
just can't cover up my redneck
Join Date: May 2004
Location: Columbus OH
Posts: 11,414
|
Re: 307 questions
Quote:
Which is exactly my point, "Rebuild it or leave it alone" there really is no "in-between"
__________________
You can review the site's rules here. Quote:
Bad planning on your part does not necessarily constitute an instant emergency on my part.... The great thing about being a pessimist is that you are either pleasantly surprised or right. ![]() |
||
![]() |
![]() |
![]() |
Bookmarks |
Thread Tools | |
Display Modes | |
|
|