Go Back   The Ford Barn > General Discussion > Early V8 (1932-53)

Sponsored Links (Register now to hide all advertisements)

Reply
 
Thread Tools Display Modes
Old 03-13-2014, 01:39 PM   #1
BobbyG
Senior Member
 
BobbyG's Avatar
 
Join Date: May 2012
Posts: 240
Default v8 hbackolding

Hi guys - running a 36 flathead in a model A - Standard 3 spd manual.

I had the distributor ( diving helmet style) rebuilt - brand new Single Stromberg - all new plugs coil/ leads etc etc.

I have a home built exhaust which runs from where the Drivers side joins the pass side from manifolds then I have maybe 3ft pipe before it exits just under the passenger door - this is a temporary system, there are no mufflers so it is a bit noisy.

Anyway the thing I think I am noticing is that the car seems to be holding back and labouring - I can not detect a missfire but in top gear and pulling away from 25mph it just seems to be a bit slow and sounds very lumpy through the exhaust.

I am new to driving this car so I have nothing to compare it to my other car has a SBC in it.

I should mention I am running the model A rear end but with a high speed pinion set - which allows it to cruise nicely at 45mph.

Any tips appreciated

Bob
BobbyG is offline   Reply With Quote
Old 03-13-2014, 01:52 PM   #2
Willit Stop
Senior Member
 
Willit Stop's Avatar
 
Join Date: Feb 2013
Location: Eureka Calif.
Posts: 915
Default Re: v8 hbackolding

It could be lotsa' things.I had a similar problem...I knew everything was right,or close enough,but still seemed sluggish at higher RPM's.Then I noticed that little 4" chrome air cleaner on top of the carburetor and started wondering how on earth enough air could go through it at 3000 RPM's.I removed the filter and drove it again.Big difference! Since then I've replaced it with two 6" stacked filters.I haven't driven the car since then but I have faith that it'll work. Just a thought......try driving yours without the filter. Good luck,Gene
Willit Stop is offline   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 03-13-2014, 02:21 PM   #3
BobbyG
Senior Member
 
BobbyG's Avatar
 
Join Date: May 2012
Posts: 240
Default Re: v8 hbackolding

Cheers Gene - will give that a go tomorrow.
BobbyG is offline   Reply With Quote
Old 03-13-2014, 03:09 PM   #4
Ken Bull
Senior Member
 
Ken Bull's Avatar
 
Join Date: Dec 2010
Location: Port St Lucie Florida
Posts: 398
Default Re: v8 hbackolding

Check to see it the Valleycover/Intake manifold is tightened down / 25lbs. torque. Mine slowly loosened up and I experianced hard starting hot & what you described problems. Also be sure the wires on each side of the under dash Resister are tight, Good Driving
Ken Bull is offline   Reply With Quote
Old 03-14-2014, 02:02 PM   #5
BobbyG
Senior Member
 
BobbyG's Avatar
 
Join Date: May 2012
Posts: 240
Default Re: v8 hbackolding

Right chaps - I took the air filter off - no change there.
Checked inlet manifold bolts and surprisingly a few were quite loose !! Thanks ken.


I am now thinking that maybe this is just how a FH V8 is typically.

Bob
BobbyG is offline   Reply With Quote
Old 03-14-2014, 02:45 PM   #6
SUHRsc
Senior Member
 
SUHRsc's Avatar
 
Join Date: May 2010
Location: near Hershey, PA
Posts: 819
Default Re: v8 hbackolding

Sponsored Links (Register now to hide all advertisements)
High speed ring and pinion in high gear at 25mph might be causing it to work too hard to where it will lug along a bit. Try winding out 2nd gear farther.
I'm almost never in 3rd gear below 35mph.

Zach
__________________
-WANTED-
Pre-War Speed Equipment
Davies Intake Manifold
81AS - 81SB or 99AS cylinder heads
SUHRsc is offline   Reply With Quote
Old 03-15-2014, 04:23 PM   #7
BobbyG
Senior Member
 
BobbyG's Avatar
 
Join Date: May 2012
Posts: 240
Default Re: v8 hbackolding

Cheers Zach - will give it a whirl and see how she performs.

Bob
BobbyG is offline   Reply With Quote
Old 03-15-2014, 04:56 PM   #8
G.M.
Senior Member
 
Join Date: May 2010
Location: Florida and Penna.
Posts: 4,424
Default Re: v8 hbackolding

Who rebuilt the distributor? Do they have a machine to set distributors?? Also slightly sticky valves, try MMO in the gas. G.M.
__________________
www.fordcollector.com
G.M. is offline   Reply With Quote
Old 03-15-2014, 05:28 PM   #9
Willit Stop
Senior Member
 
Willit Stop's Avatar
 
Join Date: Feb 2013
Location: Eureka Calif.
Posts: 915
Default Re: v8 hbackolding

Someone posted this a while back.Maybe it will help.
http://www.secondchancegarage.com/public/186.cfm
Willit Stop is offline   Reply With Quote
Old 03-15-2014, 05:42 PM   #10
koates
Senior Member
 
Join Date: May 2010
Location: Melbourne Australia.
Posts: 1,696
Default Re: v8 hbackolding

Hi there, Just check all your spark plug leads right from the two caps to each plug and make sure a couple are not crossed up. That would make your V8 run a bit "off". Regards, Kevin.
koates is offline   Reply With Quote
Old 03-15-2014, 08:38 PM   #11
Tinker
Senior Member
 
Tinker's Avatar
 
Join Date: May 2010
Location: MN/FL
Posts: 5,856
Default Re: v8 hbackolding

If its luggin from 2nd to 3rd i might venture to say (as already said) you need to run out 2nd gear before shifting. Torque off the start a flathead should have.
Tinker is offline   Reply With Quote
Old 03-16-2014, 05:44 AM   #12
scooder
Senior Member
 
Join Date: Jul 2010
Posts: 2,573
Default Re: v8 hbackolding

What ratio is this "high speed ring and pinion"? And what size tires you got in back?
Martin.
scooder is offline   Reply With Quote
Reply

Thread Tools
Display Modes

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 02:44 AM.