Click Here -> Please Consider Making a PayPal Contribution to the FordSix Forum!
2018 Contributors:
StarDiero75, curts56, DannyG, B RON CO, wsa111, Captainslow42, falconcritter
Econoline, THE FRENCHTOWN FLYER, 95FordFleetside, turbo6, Max_Effort, WorldChampGramp
cr_bobcat, C.S.Designs, pmuller9, gus91326, rwbrooks50, rocklord, drag-200stang, Big64my79Effie, CNC-Dude, gb500

2019 Contributors:
NJwpod, 1strodeo, mightynorseman, maxtrux, 6d7coupe, broncr, Phase3, 68Flareside240, bmbm40,
mustang6, WorldChampGramp, justintendo, BigBlue94, ags290, motorsickle1130, Rooster, ousooner919, ethanperry

Unknown->> M.Ketterer, T.Smith, J.Myers, P.McIntire - Please PM me (1966Mustang) and lemme know who you are!

1970 Ford 170 Exhaust Manifold Choke Heater

Moderator: Mod Squad

Wascator
Registered User
Posts: 19
Joined: Wed Aug 23, 2017 9:34 am

1970 Ford 170 Exhaust Manifold Choke Heater

Post #1 by Wascator » Wed Aug 30, 2017 11:15 am

Hi, I am preparing may exhaust manifold for reuse. There is a tube fitting which seems to be pressed in on the top side of the manifold, above the twin exhaust ports in the center, and there is a hole on the bottom directly below this. Is this a passage for the air going to the choke? I can't get a rod through it right now, and I want to know for sure what is going on before I take a drill bit and clean it out.

ags290
Registered User
Posts: 165
Joined: Tue Jun 23, 2015 5:09 pm
Location: Mansfield Texas

Re: 1970 Ford 170 Exhaust Manifold Choke Heater

Post #2 by ags290 » Wed Aug 30, 2017 11:24 am

Yes that is where the choke tube goes.
Kevin
Early 1965 Mustang with a 170

Wascator
Registered User
Posts: 19
Joined: Wed Aug 23, 2017 9:34 am

Re: 1970 Ford 170 Exhaust Manifold Choke Heater

Post #3 by Wascator » Wed Aug 30, 2017 1:36 pm

and should I clean it out so that a rod passes all the way through?

Wascator
Registered User
Posts: 19
Joined: Wed Aug 23, 2017 9:34 am

Re: 1970 Ford 170 Exhaust Manifold Choke Heater

Post #4 by Wascator » Wed Aug 30, 2017 1:51 pm

I think I see now: there is a "supply" tube from somewhere, maybe the air filter, to the bottom hole in the exhaust manifold, and the tube from the top hole goes to the choke coil and is insulated with a woven sleeve. The hole therefore should be open through so air can pass.
Thanks!

User avatar
xctasy
VIP Member
Posts: 6835
Joined: Sat Nov 09, 2002 10:40 am
Location: PO Box 7072 Dunedin 9011,South Island, NEW ZEALAND
Contact:

Re: 1970 Ford 170 Exhaust Manifold Choke Heater

Post #5 by xctasy » Wed Aug 30, 2017 2:05 pm

viewtopic.php?f=1&t=76562&p=589372#p589372
ludwig wrote:Image

This is what they are talking about when they mention taking the vacuum off the log. My engine came with that brass block and ports. Distributor vacuum comes out of the carb. The one that is hooked up to the brass block goes to the transmission modulator. The other two are for additional vacuum functions. I'm thinking the larger one would be for the power brakes.

IDK how this looked when delivered from the factory. The little hoses with screw plugs were there when I got it. But the block with ports - I have been told - is a stock item.
Image
XEC Ltd ICBE's Inter Continental Ballistic Engines-
FAZER 6Bi (M112 & EEC5) or FAZER 6Ti (GT3582 & EEC5) 425 HP 4.1L/250 I-6
FAZER 6V0 3x2-BBL Holley 188 HP 3.3L/200 I-6 or 235 HP 4.1L/250 I-6
X-Flow Engine Components Ltd http://www.xecltd.info/?rd=10

User avatar
chad
Registered User
Posts: 4737
Joined: Sat Oct 24, 2009 9:51 am
Location: Lawrence Swamp, S. Amherst, MA

Re: 1970 Ford 170 Exhaust Manifold Choke Heater

Post #6 by chad » Wed Aug 30, 2017 10:26 pm

the "woven sleeve" is asbetos (spelling) & an insulator 4 human protection.
Some don't use that method & use an ele. choke instead. This prevents 'dirty air' from entering the carb.
"Big thing is only make one change at a time. Change 2 or more things at a time it becomes difficult to figure which change helped or hurt" turbo2256b » 1/16/2017
Chad - '70 LUEB on '77 frame (i.e. PS, D44, trapezoidal BB 9", 4.11), 250, NV 3550 & DSII to B transplanted, "T" D20/PTO, 2" SL, 1" BL, 4 discs, 33"X15", tool boxes, etc. Seeking: Hydraulic gear motor for Koenig pto. chrlsful@aol.com (413) 259-1749

User avatar
Econoline
Registered User
Posts: 1293
Joined: Tue Nov 12, 2013 8:37 pm
Location: Anacortes, WA

Re: 1970 Ford 170 Exhaust Manifold Choke Heater

Post #7 by Econoline » Wed Aug 30, 2017 11:12 pm

pretty sure they are all glass now. But yeah oem heat shielding definitely had asbestos. There was some tile type asbestos attached to heat sheilds in the 64 when I got it. Still on them I just haven't reinstalled them because the motor mounting changed.
It ain't gonna fix itself

User avatar
chad
Registered User
Posts: 4737
Joined: Sat Oct 24, 2009 9:51 am
Location: Lawrence Swamp, S. Amherst, MA

Re: 1970 Ford 170 Exhaust Manifold Choke Heater

Post #8 by chad » Thu Aug 31, 2017 8:26 am

X shows in the ludwig post how it gathers updrifting heat to the choke housing.
Urs DOES go in that hole U mention, oem, to catch the mani heat & direct it to a bi-metal coil in that choke housing.
I use an ele. & tap the 'stator' lug on my alternator. I got a lill inline fuse just incase (not needed).

Whicj ever way U go many "Help" sections in the big box auto suppliers (a peg board w/parts hangin on blister pac cards) have a replacement.
Some of the typical aftermrkt on-line 'stang sources have this (alu) tube. I wish ur exh. mani was off so U could soak the hole clean, but that's not necessary. A copper line of the correct diamiter is also sufficient. It's just something to get the heat up there for the 1st 5 - 10 min after starting.
A channel of sorts.
"Big thing is only make one change at a time. Change 2 or more things at a time it becomes difficult to figure which change helped or hurt" turbo2256b » 1/16/2017
Chad - '70 LUEB on '77 frame (i.e. PS, D44, trapezoidal BB 9", 4.11), 250, NV 3550 & DSII to B transplanted, "T" D20/PTO, 2" SL, 1" BL, 4 discs, 33"X15", tool boxes, etc. Seeking: Hydraulic gear motor for Koenig pto. chrlsful@aol.com (413) 259-1749

User avatar
bubba22349
Global Moderator
Posts: 9048
Joined: Sun Jan 03, 2010 4:46 pm
Location: Flagstaff, Az. 86005 near the old Route 66

Re: 1970 Ford 170 Exhaust Manifold Choke Heater

Post #9 by bubba22349 » Thu Aug 31, 2017 10:59 am

Wascator wrote:and should I clean it out so that a rod passes all the way through?


It has a cap on the bottom with a side hole so drilling it all the way through the bottom is a no no. Are you sure your not getting any air through it? Good luck :nod:
A bad day Drag Racing is still better than a good day at work!

I am still hunting for a project car to build but with my current low budget it's not looking so good. My Ex- Fleet of Sixes these are all long gone! :bang: 1954 Customline 223 3 speed with O/D, 1963 Fairlane project drag car with BB6, 1977 Maverick 250 with C4, 1994 F-150 a 300 with 5 speed.

Who is online

Users browsing this forum: No registered users and 10 guests