engine hard to turn over by hand...help. - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Engine
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 08-23-2003, 12:35 PM
Gino Fultano's Avatar
New Member
 
Join Date: Aug 2003
Location: new jersey
Age: 31
Posts: 20
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
engine hard to turn over by hand...help.

ok heres the run down, used 350, from a suburban, put an edelbrock 2102 cam in it, i am trying to adjust the valve lash while the engine is on the stand, but it is very hard to turn over by hand, how hard should it be to turn by hand? i have a 15" long peice of pipe bolted to the damper that i am turning it with. is there any way i can have the valve lash so tight the valves are hitting the pistons? could i not have tdc right? please help me out here. thanks.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 08-23-2003, 12:46 PM
troy-curt's Avatar
Shop Owner And Troll Hunter
 

Last journal entry: Detailing Eng. Compartment
Last photo:
Join Date: Apr 2003
Location: Prairie Grove Ar.
Age: 75
Posts: 2,646
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Need a little more information, did you put rings and bearings in it?
do you have the plugs out?

If the valves are hitting the pistons, you should be able to feel it.

Good Luck
Troy
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 08-23-2003, 12:50 PM
Gino Fultano's Avatar
New Member
 
Join Date: Aug 2003
Location: new jersey
Age: 31
Posts: 20
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
more info, the only thing i changed was the cam, still have the stock block, piston rings, bearings, everything. yes the spark plugs are out, all of them. if the valves are hitting the piston, would i be able to turn the engine over completely or would the valve stop me from tuning anymore? thanks for your help.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 08-23-2003, 12:54 PM
troy-curt's Avatar
Shop Owner And Troll Hunter
 

Last journal entry: Detailing Eng. Compartment
Last photo:
Join Date: Apr 2003
Location: Prairie Grove Ar.
Age: 75
Posts: 2,646
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
You could feel them touch, if its hard enough you could not go any futher.

Put some oil in the cylinders and rotate it. It should be easy to turn.

Troy
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 08-23-2003, 07:49 PM
western star's Avatar
Member
 
Last photo:
Join Date: Aug 2003
Location: BC
Posts: 304
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Just a couple of things first. The engine stand is bolted to your block right and it's not a home mader that might be hitting the back of the crankshaft? Was the engine hard to turn over before you set the valves. What are the specs on you cam? ie lift and duration. Start from scratch with the lifters backed right off and plugs out. That puppy should turn over with a 1/2" ratchet no problem. If it does then start to set them. How are you setting them?
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 04-22-2005, 08:04 AM
Member
 
Join Date: Apr 2005
Location: Cincinnati,ohio
Posts: 67
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
With the spak plugs out it should take I beleive no more than 30ft/lbs to turn the engine over, if i remeber correctly. The first thing to do is completely back off all of the rockers and see if it cranks over easily, if not than something's not right inside that motor. If this is the case, tear it apart now whiel it is still on the stand.
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 04-22-2005, 08:08 AM
Member
 
Join Date: Apr 2005
Location: Cincinnati,ohio
Posts: 67
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
one more thing, if you do go ahead and rebuild the motor before you do anything install jsut the bearings and crank and torque all the caps, then you should be able to spin the crank by hand pretty easily, if not your clearences are too tight or the crank is warped.
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 03-15-2008, 09:28 AM
Registered User
 
Join Date: Mar 2008
Location: Belleview Florida
Posts: 10
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
no roller heheh

Back the springs off and see if it rolls first.
Why would you tighten all of them down at the same time????

I would have had it already set on number 1 tdc and previously turned the crank a few times after I set put the timing chain back on. And starting at number one ...I would cold lash those 2 valves only....one full turn of the crank and do the next and then the next 2 valves.....so on
With each valve setting the engine gets incremetaly harder to turn....

If suddenly it no longer tuns over by hand .... you know you got a problem and what the problem is. Simple mechanical methodology.... the order of your assembly is mixed up.... I mean ...missing a step...eg: "Turn the engine at least one rotation after each step."...

Did you change the lifters too? or pushrods? Is it a racing cam??
You trying to build it up so it blows up better?

You didnt give us much to go on.

Let us know what happened
;-)

thanks
Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 03-15-2008, 11:27 AM
MI2600's Avatar
Member# 3287
 

Last journal entry: Vortec Heads
Last photo:
Join Date: Jul 2002
Location: N. Muskegon, MI
Posts: 2,632
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
This thread is five years old! Hopefully he figured out his problem.
Reply With Quote Quick reply to this message

Recent Engine posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -6. The time now is 05:20 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.