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1986 F-250 XLT 6.9 idi C6 switch to 300 4 speed


nic55kel

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Well I am really really happy with how well that worked. You can only use lye on cast iron and steel, but for those it is

superb.

I let it soak for about 2 days, I had planned on putting a bit of heat to it but it reached almost a 100F here yesterday so

I didn't bother. After letting it soak for two days I dumped most of the liquid into a pail and then flushed the manifold

with hot water. Evil looking liquid that came out hope it works as a weed killer.

Anyway below is a picture of one of the ports and the rest of the intake looks just as clean.

The before picture for that port is a couple of posts earlier.

That looks great, Bob. :nabble_anim_claps:

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That looks great, Bob. :nabble_anim_claps:

Thanks Gary,

It's Alive!

Working on it when other projects and weather would allow.

Back together and runs beautifully. 19 - 20 inches vacuum at idle.

IMG_1444.jpg.d843ac284d8dc3c19b37373f810b61a4.jpg

IMG_1453.jpg.b3d7c3040643b73e1f9a59f9643a3bb7.jpg

I chased all the threads and wire wheeled all the fasteners, cleaned all the surfaces etc.

Used my crane to put the head and the manifolds back on.

Made up a carb spacer gasket out of 1/8" nitrile - I think the temperatures are within its operating range.

I installed chevy 292 rocker arms.

Used the distributor rotor to tell me which cylinder to adjust the valves on.

Zero lash + 3/4 turn.

Checked for oil flow to rocker arms = good.

Well that was definitely a learning experience.

I had thought of trying to clean the gas tank but they are cheap enough I think I will just replace it.

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:nabble_head-rotfl-57x22_orig:

Gary, I didn’t know it was possible to post an animated gif! LOL!

That one is "embedded", and to do so you have to tick the "Message is in HTML Format" box. But when you do that hitting Enter doesn't get you a line feed, so you have to click Formatting then Linefeed.

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