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Old 06/23/19, 12:08 PM   #1
camucsb
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Routing of exhaust for a 66 with the I6?

Hi all,

This is probably a very dumb question, but I just bought the replacement exhaust kid from CJ Pony Parts for my 1966 Bronco with the 170 inline 6, and can't figure out for the life of me how it goes together. Every which way that I puzzle-piece it together seems to bump against something, or it hangs down basically on top of the axle. Is there a diagram or picture or instruction guide somewhere that someone might be able to send me?

Sorry if this is a dumb question. I'm new to this stuff and teaching myself to be handy in my late 30s. Making some slow progress... this is the last step on a much larger project that involved pulling the head, replacing the water pump, thermostat housing, exhaust manifold and all belts. Pretty cool seeing it all come together, and looking forward to (really) driving it for the first time in 10 years.
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Old 06/23/19, 01:56 PM   #2
okie4570
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I can get you some pics but it will be late this evening or tomorrow.

1971 U15 302/np435/twin sticks
1966 U14 Born 9/65'
1966 U15 Born 10/65'
1966 U14 Born 9/65'- SOLD
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Old 06/23/19, 02:11 PM   #3
1strodeo
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Here ya go...
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1966 LUBR, 351/4spd swap in progress, 2.5" SL, 1" BL, 31's Tonko

1972 U15, 302 3spd, 3.5" SL, 1" BL, 35's Frankie
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Old 06/23/19, 02:56 PM   #4
bmbm
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six exhaust

Maybe they sent you a Mustang setup?
Could be some help at fordsix.com they have a Bronco forum. My Bronco is in another state or I would snap a pic for you.

1966 Bronco uncut, 2.5" SL, 1" BL, 250 six, DSII, NV3550, front disc, 4 turn power steering, twin stick D20, D30, 30x9.50x15
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Old 06/23/19, 03:04 PM   #5
bmbm
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exhaust replacement

Good some have helped you already. One thing to check is my 66 Bronco was a 170 engine originally and has 2" exhaust pipe I believe. A smaller diameter could hurt performance, such as it is with the 170.

1966 Bronco uncut, 2.5" SL, 1" BL, 250 six, DSII, NV3550, front disc, 4 turn power steering, twin stick D20, D30, 30x9.50x15
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Old 06/23/19, 03:31 PM   #6
bmbm
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exhaust diameter info

A recent discussion on exhaust diameter for the six.

https://fordsix.com/viewtopic.php?f=1&t=79990

1966 Bronco uncut, 2.5" SL, 1" BL, 250 six, DSII, NV3550, front disc, 4 turn power steering, twin stick D20, D30, 30x9.50x15
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Old 06/24/19, 12:22 AM   #7
camucsb
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Thanks all! This should get me going, I think. I'm hoping to get under the truck tomorrow if I can get home while it's still light out, so will see if I can figure out the pieces that I got. Will keep you all updated...
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Old 06/24/19, 05:11 AM   #8
sprdv1
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Quote:
Originally Posted by 1strodeo View Post
Here ya go...
Look at you rock star

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Old 06/24/19, 05:11 AM   #9
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Guess you better call the Whaaaambulance

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Originally Posted by camucsb View Post
Thanks all! This should get me going, I think. I'm hoping to get under the truck tomorrow if I can get home while it's still light out, so will see if I can figure out the pieces that I got. Will keep you all updated...
Good luck...

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Old 07/04/19, 01:18 PM   #10
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Quick update and another question - I had to put this project down for a couple of weeks, but getting back after it today. The question I'm running into now is, how much clearance do I need over the rear axle?

The current routing that I have stumbled into looks to be pretty good, but there's only about 2.75" of clearance over the rear axel, which I suspect might be too tight. Is there a rule of thumb on how much clearance you would need in order to avoid having the axle smash the exhaust when the springs are compressed? Here's a photo: https://photos.app.goo.gl/P5H2prmFjuScyDWk6

Hoping I'm on the right track so I can get this sucker buttoned up and started again! Sorry for the basic questions, hopefully they'll get less dumb as I start to figure this all out.

Cameron
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Old 07/04/19, 02:09 PM   #11
B RON CO
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Hi, I don't see the big bend in the tail pipe to go over the axle as seen in the diagram. The end of the tail pipe behind the rear wheel should be much more level. Don't tighten any clamps until all the parts are in the right position.
Good luck
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