Go Back   The Ford Barn > General Discussion > Model A (1928-31)

Sponsored Links (Register now to hide all advertisements)

Reply
 
Thread Tools Display Modes
Old 10-25-2018, 11:00 AM   #61
Cape Codder
Senior Member
 
Cape Codder's Avatar
 
Join Date: May 2010
Posts: 1,261
Default Re: Terriable backfiring

steve s It is too late as the engine has been drained of water, water pump is off and all bolts to head are loose. Problem is head won't come off so I have ordered a head puller which hopefully will be here Saturday. When I get it back together I will try your suggestion.
Cape Codder is offline   Reply With Quote
Old 10-25-2018, 11:12 AM   #62
Tom Wesenberg
Senior Member
 
Tom Wesenberg's Avatar
 
Join Date: May 2010
Location: Mpls, MN
Posts: 27,582
Default Re: Terriable backfiring

Start soaking all the studs with Kroil ASAP.
Tom Wesenberg is offline   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 10-25-2018, 12:09 PM   #63
steve s
Senior Member
 
steve s's Avatar
 
Join Date: May 2010
Location: Kalamazoo
Posts: 1,656
Default Re: Terriable backfiring

Did you try just turning the engine over with the starter after backing off the nuts just a few turns?
steve s is offline   Reply With Quote
Old 10-25-2018, 12:30 PM   #64
30 Closed Cab PU
Senior Member
 
Join Date: Aug 2018
Posts: 2,332
Default Re: Terriable backfiring

Tom and Steve have great ideas. Even if you have previously tried Steve's suggestion but not Tom's, do Tom's and try again. You can actually run the motor. As the head lifts the distributor/cam shaft should raise with the head, and immediately shuts off the motor.




I had a particularly stubborn head, the mechanic tried this method, did not have a puller, tried using a motor hoist and had the front end off the ground, had to resort to soft wedges. Ends up there was so much rust from sitting for 50 years with a bad gasket he was not sure a puller would have worked.
30 Closed Cab PU is offline   Reply With Quote
Old 10-25-2018, 01:27 PM   #65
Cape Codder
Senior Member
 
Cape Codder's Avatar
 
Join Date: May 2010
Posts: 1,261
Default Re: Terriable backfiring

Tom Wesenberg I have been soaking the bolts to no avail. I have had 5 - 6 bolts come out and all are unrusted maybe because they are chrome molly bolts.

steve s that was the first thing I did and the rear lifted just a bit! I'm done using the scraper and waiting for the puller. I also tried some HARD WOOD WEDGES but that also didn't help.

I installed the head gasket myself some 11,000+ miles ago which was the NEW head gasket at the time i.e. with the RED sealant around all the bolt holes etc. and believe the gasket itself is holding the front of the head down.
Cape Codder is offline   Reply With Quote
Old 10-25-2018, 01:31 PM   #66
Cape Codder
Senior Member
 
Cape Codder's Avatar
 
Join Date: May 2010
Posts: 1,261
Default Re: Terriable backfiring

Sponsored Links (Register now to hide all advertisements)
I forgot to acknowledge 30 Closed CabPU for his response. You can see above my response.

Also thanks to Tom Wesenberg and steve s for your suggestions and response.
Cape Codder is offline   Reply With Quote
Old 10-25-2018, 03:45 PM   #67
1crosscut
Senior Member
 
1crosscut's Avatar
 
Join Date: Feb 2011
Location: Lincoln, Nebraska
Posts: 1,907
Default Re: Terriable backfiring

The puller will help get the head off. They work pretty well. Once the head is all the way to the top of the head studs it will not be able to lift it any farther. You can then attach a engine lift to the puller and use that to get it the rest of the way off if it still needs help. Be careful though if you do because the head can separate pretty suddenly causing damage the junction box or firewall etc...
Another option is to make spacers out of 1/4' nuts by grinding the tips off making them round. They will then be able to sit on top of the four head studs the puller pushes against and have room to recess into the head. Sometimes several need to be stacked on top of each other to get a head all the way off.
__________________
Dave / Lincoln Nebraska
1crosscut is offline   Reply With Quote
Old 10-26-2018, 08:32 AM   #68
katy
Senior Member
 
katy's Avatar
 
Join Date: Jun 2015
Location: Red Deer, Alberta
Posts: 5,042
Default Re: Terriable backfiring

Quote:
with the RED sealant around all the bolt holes etc
That's probably what's holding the head on.
__________________
If you don't hear a rumor by 10 AM, start one!.
Got my education out behind the barn!
katy is offline   Reply With Quote
Old 10-26-2018, 09:09 AM   #69
30 Closed Cab PU
Senior Member
 
Join Date: Aug 2018
Posts: 2,332
Default Re: Terriable backfiring

I have not seen additional sealing around the bolts mentioned before in my short time as a Barn member. Is this recommended, and if yes why?
30 Closed Cab PU is offline   Reply With Quote
Old 10-26-2018, 09:44 AM   #70
cpf240
Senior Member
 
cpf240's Avatar
 
Join Date: Feb 2017
Location: Northern Idaho
Posts: 282
Default Re: Terriable backfiring

Quote:
Originally Posted by 30 Closed Cab PU View Post
I have not seen additional sealing around the bolts mentioned before in my short time as a Barn member. Is this recommended, and if yes why?
Perhaps to keep any water leaks from rusting the studs?
cpf240 is offline   Reply With Quote
Old 10-26-2018, 11:06 AM   #71
Benson
Senior Member
 
Benson's Avatar
 
Join Date: May 2010
Posts: 2,594
Default Re: Terriable backfiring-Another Reason to use antifreeze.

Quote:
Originally Posted by cpf240 View Post
Perhaps to keep any water leaks from rusting the studs?
Reason number 27 to use antifreeze.

Simple solution to rusted stud problem is to use antifreeze mixed with the water!!

Just sayin ....
Benson is offline   Reply With Quote
Old 10-26-2018, 01:17 PM   #72
Cape Codder
Senior Member
 
Cape Codder's Avatar
 
Join Date: May 2010
Posts: 1,261
Default Re: Terriable backfiring

30 Closed Cab PU The gasket that I have on the engine right now is pictured below, hopefully ...........but is listed in Snyders P/N A-6051-M. Sorry didn't work, but check it out in Snyder's catalog online listed under Parts on the home page of this site.

cpf240 That is the reason I used it but............now I have questions because I really think that is what's holding it on.

Benson I have been using antifreeze in the motor ALONG with DISTILLED WATER. As I said the bolts that have come out attached to the nut don't have any rust on them.
Cape Codder is offline   Reply With Quote
Old 10-26-2018, 01:27 PM   #73
30 Closed Cab PU
Senior Member
 
Join Date: Aug 2018
Posts: 2,332
Default Re: Terriable backfiring

Quote:
Originally Posted by Cape Codder View Post
30 Closed Cab PU The gasket that I have on the engine right now is pictured below, hopefully ...........but is listed in Snyders P/N A-6051-M. Sorry didn't work, but check it out in Snyder's catalog online listed under Parts on the home page of this site.

cpf240 That is the reason I used it but............now I have questions because I really think that is what's holding it on.

Benson I have been using antifreeze in the motor ALONG with DISTILLED WATER. As I said the bolts that have come out attached to the nut don't have any rust on them.

No need for the picture, I was asking you and the others the purpose of sealing the bolts, and if it is recommended. By the way you do a great job of responding to everyone, I really appreciate that.
30 Closed Cab PU is offline   Reply With Quote
Old 10-26-2018, 01:45 PM   #74
CSPIDY
Member
 
CSPIDY's Avatar
 
Join Date: Aug 2018
Location: West Newton PA
Posts: 49
Default Re: Terriable backfiring

Backfire= fire out the carb usually caused by ignition problems
Afterfire=fire out the exhaust usually caused by valve; timing, leaking or burnt
CSPIDY is offline   Reply With Quote
Old 11-02-2018, 10:30 AM   #75
Cape Codder
Senior Member
 
Cape Codder's Avatar
 
Join Date: May 2010
Posts: 1,261
Default Re: Terriable backfiring

Just an update on my problem. As I had said we opted to pull the head. We bought the head puller from Brattons but to be truthful, I was disappointed in its operation. The #7 bolt which works with the puller was not as accessible as to other three to get a wrench on. The wrench was hitting on the high spot of the head because of the tunnel, for a lack of a better word, that goes forward to the water pump, and also the fitting supplied that goes in the #1 spark plug hole. We, therefore, decided to pull the remaining bolts from the head, with #7 giving us considerable trouble.

After getting the head off we observed that the gasket between #3 & #4 was intact. This was the reason we removed the head as the compression check showed 48lbs. in #3 and #60 in the rest of the cylinders. We also had done a blowdown test which showed air coming from #4 and when we put air to #4 we had air coming from #3. These two tests indicated to me that the head gasket was blown.

I will check the head for straightness today and if needed take it to the machine shop and have it ground. Wonder how much is left to take off?

As always any comments would be welcome relating to this latest event!
Cape Codder is offline   Reply With Quote
Old 11-02-2018, 11:55 AM   #76
heneste
Senior Member
 
heneste's Avatar
 
Join Date: Nov 2010
Location: Ottawa,Ontario, Canada
Posts: 271
Default Re: Terriable backfiring

If the head is straight and not the issue with the compression loss, would a poor valve seat, bent valve or sticking valve let air from #3 to #4 and vice versa?
heneste is offline   Reply With Quote
Old 11-02-2018, 04:28 PM   #77
Cape Codder
Senior Member
 
Cape Codder's Avatar
 
Join Date: May 2010
Posts: 1,261
Default Re: Terriable backfiring

30 Closed Cab PU Thanks for the compliment! I try.


heneste Thanks for your response. I just returned from the machinest and he declared that the head is in fact FLAP! However, in the same breath, he said I should have it planned because he saw some spots that were too ruff into the head.

As to determining if there is a poor valve seat or bent valve I don't know how to determine that. After cleaning up from the head removal i.e. cleaning the gasket off I will get into checking the valve clearances sooo...if there is anything wrong I should be able to determine that.
Cape Codder is offline   Reply With Quote
Old 11-02-2018, 09:59 PM   #78
steve s
Senior Member
 
steve s's Avatar
 
Join Date: May 2010
Location: Kalamazoo
Posts: 1,656
Default Re: Terriable backfiring

gonna be a heck of a note if the problem was a plugged jet in the carb.
steve s is offline   Reply With Quote
Old 11-02-2018, 10:05 PM   #79
Fred K-OR
Senior Member
 
Fred K-OR's Avatar
 
Join Date: May 2010
Location: Stayton, Oregon
Posts: 3,806
Default Re: Terriable backfiring

Quote:
Originally Posted by steve s View Post
gonna be a heck of a note if the problem was a plugged jet in the carb.
X2. I agree.
__________________
Fred Kroon
1929 Std Coupe
1929 Huckster
Fred K-OR is offline   Reply With Quote
Old 11-03-2018, 01:21 PM   #80
GPierce
Senior Member
 
GPierce's Avatar
 
Join Date: Dec 2014
Location: Germantown,TN
Posts: 516
Default Re: Terriable backfiring

Sure would have changed the carb before I pulled the head. Both times I had backfiring was a carb issue.
GPierce is offline   Reply With Quote
Reply


Posting Rules
You may not post new threads
You may not 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

Forum Jump

Sponsored Links (Register now to hide all advertisements)


All times are GMT -5. The time now is 03:40 AM.