carb choice
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From: Indianapolis
carb choice
New to the site I'll make this my intoduction thread here too I guess. Lurker for a few weeks to get gen. info I needed for the truck. It had not been driven in 5 years hadn't left the turkey farm in 10.
Back to the question at hand.
Ive got it narrowed down a Autolite 4100 (1.12)
"Spreadbore" or an Autolite 4100 (1.12) no "Spreadbore" or not labled that way.
a 1985 f150 4x4 lariat w/HD sus*****on up front not sure how to tell in back
efi exhaust manifold
clifford intake manifold
Maybe a walker y (unless I get a better idea Hint Hint)
maybe a cat
some type of turbo exhaust muffler or a 1 in 2 out flowmaster 40
What would be the benifits of the spreadbore over the "regular" 4100 be? or vice versa?
Thanks
Dan
Back to the question at hand.
Ive got it narrowed down a Autolite 4100 (1.12)
"Spreadbore" or an Autolite 4100 (1.12) no "Spreadbore" or not labled that way.
a 1985 f150 4x4 lariat w/HD sus*****on up front not sure how to tell in back
efi exhaust manifold
clifford intake manifold
Maybe a walker y (unless I get a better idea Hint Hint)
maybe a cat
some type of turbo exhaust muffler or a 1 in 2 out flowmaster 40
What would be the benifits of the spreadbore over the "regular" 4100 be? or vice versa?
Thanks
Dan
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Joined: Dec 2006
Posts: 3,603
Likes: 10
From: Spokane, WA
Ford Truck Enthusiasts Forums - Search Results
Try there...easily found by entering "spreadbore" or "spread bore" as a term in the Search function box.
Try there...easily found by entering "spreadbore" or "spread bore" as a term in the Search function box.
Logistics Pro
Joined: Nov 2009
Posts: 3,886
Likes: 12
From: Lawrence Swamp
New to the site I'll make this my intoduction thread here too I guess. Lurker for a few weeks to get gen. info I needed for the truck. It had not been driven in 5 years hadn't left the turkey farm in 10.
Back to the question at hand.
Ive got it narrowed down a Autolite 4100 (1.12)
"Spreadbore" or an Autolite 4100 (1.12) no "Spreadbore" or not labled that way.
a 1985 f150 4x4 lariat w/HD sus*****on up front not sure how to tell in back
efi exhaust manifold
clifford intake manifold
Maybe a walker y (unless I get a better idea Hint Hint)
maybe a cat
some type of turbo exhaust muffler or a 1 in 2 out flowmaster 40
What would be the benifits of the spreadbore over the "regular" 4100 be? or vice versa?
Thanks
Dan
Back to the question at hand.
Ive got it narrowed down a Autolite 4100 (1.12)
"Spreadbore" or an Autolite 4100 (1.12) no "Spreadbore" or not labled that way.
a 1985 f150 4x4 lariat w/HD sus*****on up front not sure how to tell in back
efi exhaust manifold
clifford intake manifold
Maybe a walker y (unless I get a better idea Hint Hint)
maybe a cat
some type of turbo exhaust muffler or a 1 in 2 out flowmaster 40
What would be the benifits of the spreadbore over the "regular" 4100 be? or vice versa?
Thanks
Dan
What motor, what use (I guess the 300)? This is an already assembled vehicle?
(En)Join da fun!
Logistics Pro
Joined: Nov 2009
Posts: 3,886
Likes: 12
From: Lawrence Swamp
Ford Truck Enthusiasts Forums - Search Results
Try there...easily found by entering "spreadbore" or "spread bore" as a term in the Search function box.
Try there...easily found by entering "spreadbore" or "spread bore" as a term in the Search function box.
TIA,
cf
(look out 4 the 18" fallin!)
Lead Driver
Joined: Mar 2008
Posts: 7,192
Likes: 384
From: Near Los Angeles
New to the site I'll make this my intoduction thread here too I guess. Lurker for a few weeks to get gen. info I needed for the truck. It had not been driven in 5 years hadn't left the turkey farm in 10.
Back to the question at hand.
Ive got it narrowed down a Autolite 4100 (1.12)
"Spreadbore" or an Autolite 4100 (1.12) no "Spreadbore" or not labled that way.
a 1985 f150 4x4 lariat w/HD sus*****on up front not sure how to tell in back
efi exhaust manifold
clifford intake manifold
Maybe a walker y (unless I get a better idea Hint Hint)
maybe a cat
some type of turbo exhaust muffler or a 1 in 2 out flowmaster 40
What would be the benifits of the spreadbore over the "regular" 4100 be? or vice versa?
Thanks
Dan
Back to the question at hand.
Ive got it narrowed down a Autolite 4100 (1.12)
"Spreadbore" or an Autolite 4100 (1.12) no "Spreadbore" or not labled that way.
a 1985 f150 4x4 lariat w/HD sus*****on up front not sure how to tell in back
efi exhaust manifold
clifford intake manifold
Maybe a walker y (unless I get a better idea Hint Hint)
maybe a cat
some type of turbo exhaust muffler or a 1 in 2 out flowmaster 40
What would be the benifits of the spreadbore over the "regular" 4100 be? or vice versa?
Thanks
Dan
It is a great carb, and easy to work on. The rebuild kits are cheap, about $20 at Napa, but because so many collectors want them for original restorations for Mustangs and 60's era cars, they have become expensive. Unless you get lucky, even a core at the swap meet will cost you $100 at the swap meet. If you want it rebuilt by Pony Carbs, and they are the only ones who make the 'spreadbore', it will cost an additional $500. I have done it.
The idea behind the spread bore is to do your daily driving on the small venturi side, and then have the larger boosters when you need the neck-snap accelleration.
Having said that, I will say that I had a 1.08 (480 cfm) on my hp 300, with ported head and over-size valves. It was plenty for that engine. If your engine is not modified, then a 600 cfm, or 1.12 4100 may be too big for it. If you can turn the carb over and can see that the primary venturi are physically smaller than the secondaries, then Pony Carbs has worked on it. Ford put that carb on 390's and 427's!
If you keep it, then you will need the 1/8" plate that Pony sells to sit between the carb and manifold to prevent vacuum leaks. For $20 it is well worth it.
I would add: That carb was last made in 1968! It is at least 41 years old. Surfaces warp, tiny passages get clogged or distorted and leak. You might make it work really well on a 300 by experimenting with different Holley jets, maybe not. If you found a cheap one, I'd say give it a whirl. If you are going to pay top dollar with Pony, I'd say the money is much better speant on an Edelbrock 500 for $300, completely new, or even rebuild a Holley that is not quite so old.
Good luck.
<a href="http://s659.photobucket.com/albums/uu316/bobbyrogue/?action=view¤t=P1010153.jpg" target="_blank"><img src="http://i659.photobucket.com/albums/uu316/bobbyrogue/P1010153.jpg" border="0" alt="autolite 4100"></a>
Below is a shot of the 4100 on the new engine. This is before the carb was sent to Pony.
<a href="http://s659.photobucket.com/albums/uu316/bobbyrogue/?action=view¤t=P1010174.jpg" target="_blank"><img src="http://i659.photobucket.com/albums/uu316/bobbyrogue/P1010174.jpg" border="0" alt="last details getting sorted out"></a>
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From: Near Los Angeles
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Restorer
Thanks, useally not on this end of the new guy " hazing" / let get my post count up side of a forum. Been a member of some Bmw and M3 forums for a 6 or 7 years you always have guys who bring nothing to a thread or the op's question. Wreched on my weekend track rat for afew years now and learned alot. A bmw inline 6 is very different from a ford 6. I useally just skim past the nonsense to the info that helps me with my question and/or problem. Again thanks for you help your post are some of the first I noticed on the forum Along with Harte3 and sorry about not useing the search not sure where my head was at. Thanks for your guys insite and knowledge.
dreuter
Thanks, useally not on this end of the new guy " hazing" / let get my post count up side of a forum. Been a member of some Bmw and M3 forums for a 6 or 7 years you always have guys who bring nothing to a thread or the op's question. Wreched on my weekend track rat for afew years now and learned alot. A bmw inline 6 is very different from a ford 6. I useally just skim past the nonsense to the info that helps me with my question and/or problem. Again thanks for you help your post are some of the first I noticed on the forum Along with Harte3 and sorry about not useing the search not sure where my head was at. Thanks for your guys insite and knowledge.
dreuter
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There is no hazing ...enjoy FTE and keep posting...a ton of help here from the guys.
Restorer
Thanks, usually not on this end of the new guy " hazing" / let get my post count up side of a forum. Been a member of some BMW and M3 forums for a 6 or 7 years you always have guys who bring nothing to a thread or the op's question. Wrenched on my weekend track rat for a few years now and learned a lot. A BMW inline 6 is very different from a ford 6. I usually just skim past the nonsense to the info that helps me with my question and/or problem. Again thanks for you help your post are some of the first I noticed on the forum Along with Harte3 and sorry about not using the search not sure where my head was at. Thanks for your guys incite and knowledge.
dreuter
Thanks, usually not on this end of the new guy " hazing" / let get my post count up side of a forum. Been a member of some BMW and M3 forums for a 6 or 7 years you always have guys who bring nothing to a thread or the op's question. Wrenched on my weekend track rat for a few years now and learned a lot. A BMW inline 6 is very different from a ford 6. I usually just skim past the nonsense to the info that helps me with my question and/or problem. Again thanks for you help your post are some of the first I noticed on the forum Along with Harte3 and sorry about not using the search not sure where my head was at. Thanks for your guys incite and knowledge.
dreuter
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Joined: Oct 2009
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From: Indianapolis
F-250 restorer what lokar bracket did you use?
Lokar SRK-4000 - Lokar Throttle Cable Brackets - Overview - SummitRacing.com
Lokar SRK-4001 - Lokar Throttle Cable Brackets - Overview - SummitRacing.com
I went with the autolite 4100. Hope to get this in the truck soon. A few parts need blasted and powder coated but hope fully soon.
Thanks again
Dan
Lokar SRK-4000 - Lokar Throttle Cable Brackets - Overview - SummitRacing.com
Lokar SRK-4001 - Lokar Throttle Cable Brackets - Overview - SummitRacing.com
I went with the autolite 4100. Hope to get this in the truck soon. A few parts need blasted and powder coated but hope fully soon.
Thanks again
Dan
Lead Driver
Joined: Mar 2008
Posts: 7,192
Likes: 384
From: Near Los Angeles
[quote=dreuter;8369971]F-250 restorer what lokar bracket did you use?
Lokar SRK-4000 - Lokar Throttle Cable Brackets - Overview - SummitRacing.com
Lokar SRK-4001 - Lokar Throttle Cable Brackets - Overview - SummitRacing.com
I went with the autolite 4100. Hope to get this in the truck soon. A few parts need blasted and powder coated but hope fully soon.
Hey guy--
Yeah, those are the brackets I used. They work really well. The only tip I would give you is this: Use the Clifford or Offy C intake. With the 4100 on a DP intake, you have to mount it 90 degrees to the engine. That means the mixture screws are ... nearly impossible to get at. I am not exagerating! I tried to make a tool, cut off screwdrivers, and got multiple burns laying across the engine trying to tune it, or just to turn down the idle. You don't have that problem with the Clifford or Offy C.
I would say that the 4100 is a great carb. I hope you went with the 1.08 venturi, which is 480 cfm. When the secondaries open it's a kick in the butt! Also, because the base of the 4100 is so narrow, it is difficult to get a seal. Pony Carburetors sells a 1/8" plate which mirrors a base gasket, and it solves the problem.
Good luck.
**I also want to say that for a while after the installation, be checking inside the venturi for about a week to make sure nothing is leaking. And smell your dip stick periodically to make sure it doesn't smell like gas. That's always a good idea with a rebuilt carb. It's a lot earsier and cheaper to repair a carb than bearings!
Lokar SRK-4000 - Lokar Throttle Cable Brackets - Overview - SummitRacing.com
Lokar SRK-4001 - Lokar Throttle Cable Brackets - Overview - SummitRacing.com
I went with the autolite 4100. Hope to get this in the truck soon. A few parts need blasted and powder coated but hope fully soon.
Hey guy--
Yeah, those are the brackets I used. They work really well. The only tip I would give you is this: Use the Clifford or Offy C intake. With the 4100 on a DP intake, you have to mount it 90 degrees to the engine. That means the mixture screws are ... nearly impossible to get at. I am not exagerating! I tried to make a tool, cut off screwdrivers, and got multiple burns laying across the engine trying to tune it, or just to turn down the idle. You don't have that problem with the Clifford or Offy C.
I would say that the 4100 is a great carb. I hope you went with the 1.08 venturi, which is 480 cfm. When the secondaries open it's a kick in the butt! Also, because the base of the 4100 is so narrow, it is difficult to get a seal. Pony Carburetors sells a 1/8" plate which mirrors a base gasket, and it solves the problem.
Good luck.
**I also want to say that for a while after the installation, be checking inside the venturi for about a week to make sure nothing is leaking. And smell your dip stick periodically to make sure it doesn't smell like gas. That's always a good idea with a rebuilt carb. It's a lot earsier and cheaper to repair a carb than bearings!
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From: Indianapolis
little update after afew weeks of sitting the truck started up today.
had alittle problem
https://www.ford-trucks.com/forums/9...from-carb.html
I have a few questions / concerns
it seems to be pretty loud in the engine bay is this normal with a clifford and efi manifolds?
Alittle smokey after it heats up. I tried to clean up the block when everything was appart
Im hopeing its just left over cleaner or oil. Any other guesses?
I have some tinkering left to do I may make a video of it and see if you guys can find anything i cant think of.
thanks
Dan
had alittle problem
https://www.ford-trucks.com/forums/9...from-carb.html
I have a few questions / concerns
it seems to be pretty loud in the engine bay is this normal with a clifford and efi manifolds?
Alittle smokey after it heats up. I tried to clean up the block when everything was appart
Im hopeing its just left over cleaner or oil. Any other guesses?
I have some tinkering left to do I may make a video of it and see if you guys can find anything i cant think of.
thanks
Dan
Lead Driver
Joined: Mar 2008
Posts: 7,192
Likes: 384
From: Near Los Angeles
little update after afew weeks of sitting the truck started up today.
had alittle problem
https://www.ford-trucks.com/forums/9...from-carb.html
I have a few questions / concerns
it seems to be pretty loud in the engine bay is this normal with a clifford and efi manifolds?
Alittle smokey after it heats up. I tried to clean up the block when everything was appart
Im hopeing its just left over cleaner or oil. Any other guesses?
I have some tinkering left to do I may make a video of it and see if you guys can find anything i cant think of.
thanks
Dan
had alittle problem
https://www.ford-trucks.com/forums/9...from-carb.html
I have a few questions / concerns
it seems to be pretty loud in the engine bay is this normal with a clifford and efi manifolds?
Alittle smokey after it heats up. I tried to clean up the block when everything was appart
Im hopeing its just left over cleaner or oil. Any other guesses?
I have some tinkering left to do I may make a video of it and see if you guys can find anything i cant think of.
thanks
Dan
The noise may be from aftermarket air cleaner...the carb drawing?
Also, did you use the plate from Pony Carbs like I mentioned? If not, while running, spray a little starting fluid around the base of the carb and see is the idle goes up. If you, you have a vacuum leak.
What rpm are you idling at? You should be able to turn that idle screw down until the engine stalls.
If you don't answer these questions, then we can't help you because we don't know what you have or what it is doing.
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