Hot Rod Forum : Hotrodders Bulletin Board - Reply to Topic
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> Don't answer the phone!
User Name
Password
lost password?   |   register now

Thread: Don't answer the phone! Reply to Thread
Title:
  
Message:
Trackback:
Send Trackbacks to (Separate multiple URLs with spaces) :

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.



Additional Options
Miscellaneous Options

Topic Review (Newest First)
12-06-2012 01:51 PM
delawarebill
take a deep breath 27...

and start over... go to TDC and re-adj the rockers for that stroke. make sure they are pumped up first. adj and spin the push rod till it stops turning then turn another 1/2 to 3/4 turn. then turn the engine one full turn and do the other half of the rockers. if u know for sure your on TDC #1 set dizzy to #1. u may want to pull the timing cover to fix first cause u gotta drop the pan too.
12-06-2012 10:05 AM
hcompton
Quote:
Originally Posted by Adam65 View Post
Big mistake just dumping gas down carb. Use a small funnel or similar to fill the carb bowls throw the bowl vent tubes, so the gas can be metered into the engine as it normally would.
Yep this is good info. Fire is also a big issue. I know someone that bunred there garage and new 65k race car to the ground. Race car is not insureable in a garage unless you have special policy. Back fire from carb with no air cleaner caught fire and he could not get it out fast enough. By the time he had a fire extingusher in his hand the fire was to hot to even get close.

Also if it does not start quickly use a small shot of starting fluid or just wait until the the fuel pump can get gas to the carb by turning the starter for a few seconds and pause every few seconds.

You may want to pull the intake like tech said i dont see how the timing cover could have gotten bent with out the pressure reaching the crank case. Intake gasket is fairly weak if you did not have a lot of gas in the engine at once. I think pistons and head gaskets should be ok. But something had to let go let the pressure reach the oil breather or timing cover. If valve covers are commonly bent then this may not be related.

I would pull all the plugs and turn it over and listen and make sure it rolls over smoothly. A compression test will help tell if the valves are adjusted correctly. Valves are alot easier to do with the intake off. You can see the cam lobes and crank and know you lined up right.

Recheck timing and make sure cylinder one is at tdc on compression stroke and rotor is pointing toward number one cylinder. Also check wires and make sure they didnt get twisted around on the wrong plug. Also make sure they are presed into the cap firmly.

Hope this helps
12-06-2012 09:33 AM
Adam65 Big mistake just dumping gas down carb. Use a small funnel or similar to fill the carb bowls throw the bowl vent tubes, so the gas can be metered into the engine as it normally would.
12-06-2012 08:47 AM
27Tall T Thanks for the quick reply guys. Just to clarify things a bit.....Before starting the motor I found TDC, set the valves and then oil primed the motor. Then I used about a shot glass of fuel which I poured into the carb. Upon turning the motor over it began to fire on one or two cylinders. I gave another shot glass and a few more cylinders kicked. Thinking it wasn't getting enough gas I gave it 2 shot glasses and then it decided to let me know that something was wrong. This is a hydraulic cam with lifters and not a roller. When I took the rocker covers off to check the valve setting again, that is when I found that one valve that was very loose. Only when I tried to put the left side valve cover on again did I notice that the cover hold downs were very difficult to install. Could only get 2 at a time to screw in, the others were unable to even start. That is when I noticed that the valve cover was crooked along its entire length. Looked for a replacement cover at a wreckers and went through 3 of them before finding one that was straight. Is this a common occurence with valve covers where they are not straight along their entire length? I don't believe I had a hydraulic lock which would undoubtedly have caused more damage. At this point in time what would my next plan of attack be, try to start the motor or?????
12-05-2012 11:58 PM
cobalt327 A couple links that may help:

Adjust lifters
Cam break in
First start up
12-05-2012 09:24 PM
cobalt327
Quote:
Originally Posted by 27Tall T View Post
Just when I thought I had it all figured out this happened. I have a rebuilt 327 sbc that has not as yet been run. I should have set the valves and timing before installing it into the car, but oh well. Found TDC and adjusted the valves in the proper sequence and then set the distributor according to #1. Primed the engine with a little gas and it started to fire on a few cylinders, but not enough to run it. Poured a little more gas and it fired or should I say it liked the extra gas in that it exploded through the carb, blew the oil filler cap off, bulged the passenger side rocker cover and bulged the timing cover enough (1/4") so that I cannot see the timing line as it is hidden by the timing tab (bolt on). What gives? I checked the TDC and the distributor and it was right on. I then went through the motion of setting all the valves again, BUT......one rocker had a termendous amount of play in it, as if it wasn't adjusted. Then I remembered.... the phone rang, I answered it and then returned to completeing the adjustment of the valves, missing that one. I assume that there was ignition in that cylinder and it had no where to go but up and every where else. And so my question is, will the timing cover still suffice as is or is it needed to prevent the cam (hydraulic) from walking? I've been told that the cam stays or walks to the back of the block and the timing cover is not needed to do this job as this is a hydraulic set-up. Any comments would be greatly appreciated.
In the case of an engine that has not been broken in, the fuel you poured down the carb to start it leaked past the rings, into the crankcase. Then when the engine tried to start, the same lack of ring seal- aided by the valve being shut because it wasn't adjusted right- likely allowed the flame from that cylinder to force its way into the crankcase where there was now an explosive atmosphere.

Result = *BOOM*.

As long as the covers are still sealing and no gaskets were spit out in the explosion, and that there's nothing rubbing against rotating parts, I suppose you could continue the break in process and hope for the best.

But I'd rather see you take the time NOW to take the covers off and straighten/replace them along w/the gaskets and seals if needed.

Good luck.
12-05-2012 08:22 PM
techinspector1
Quote:
Originally Posted by hcompton View Post
If you have a 327 chevy there is no way for exhuast to enter the crank case and blow out the filler cap and damage the timing cover.
Ummm, on its way to the carburetor, the fireball could have taken out some of the intake gasket, allowing pressure to enter the crankcase. I'd be thinkin' maybe tweaked throttle blade shafts too.
12-05-2012 07:44 PM
WriterDennis
If it will make you feel better...

I was in the process of changing the oil in my riding mower when my phone rang. I had already drained the oil, reinstalled the plug, but had not replaced the oil. The wind had blown the hood into the closed position by the time I returned. Between a lengthy phone call and the hood being closed, I forgot that I wasn't finished. Pistons sure make a lot of noise when they come through the block...

Dennis W. Parks
Author of automotive how-to books
12-05-2012 07:34 PM
hcompton Let me ask a few questions cause we got a lot going on here.

If you have a 327 chevy there is no way for exhuast to enter the crank case and blow out the filler cap and damage the timing cover.

Is it a roller motor? If so you need a proper cover and cam button. Do you have a roller cam and no cam button. You may have other problems if so.

How much gas did you put in the engine like a shot glass full or more than that? More can cause hydro lock since you cant compress a liquid it will break a piston or stretch the head bolts and blown the head gasket. Or all three of those things. I got a feeling you problems are a lot bigger than a bent timing cover. Which is fine with normal cam just smack it back with a hammer. But that is not the problem. You have a broken piston or at least a blown head gasket.

I hope this helps. Sorry to hear things arent going well.
12-05-2012 06:55 PM
27Tall T
Don't answer the phone!

Just when I thought I had it all figured out this happened. I have a rebuilt 327 sbc that has not as yet been run. I should have set the valves and timing before installing it into the car, but oh well. Found TDC and adjusted the valves in the proper sequence and then set the distributor according to #1. Primed the engine with a little gas and it started to fire on a few cylinders, but not enough to run it. Poured a little more gas and it fired or should I say it liked the extra gas in that it exploded through the carb, blew the oil filler cap off, bulged the passenger side rocker cover and bulged the timing cover enough (1/4") so that I cannot see the timing line as it is hidden by the timing tab (bolt on). What gives? I checked the TDC and the distributor and it was right on. I then went through the motion of setting all the valves again, BUT......one rocker had a termendous amount of play in it, as if it wasn't adjusted. Then I remembered.... the phone rang, I answered it and then returned to completeing the adjustment of the valves, missing that one. I assume that there was ignition in that cylinder and it had no where to go but up and every where else. And so my question is, will the timing cover still suffice as is or is it needed to prevent the cam (hydraulic) from walking? I've been told that the cam stays or walks to the back of the block and the timing cover is not needed to do this job as this is a hydraulic set-up. Any comments would be greatly appreciated.

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


All times are GMT -6. The time now is 07:07 PM.


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.