Pre 84 Trucks 1st gen pickups

20R Loss of power then power.

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Old 12-05-2011, 10:45 AM
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Originally Posted by southernZ
Muffler bearings? Are you serious? The only logical way hitting a deer will affect how your engine is running is if it damaged the radiator, causing the engine to overheat. There are absolutely zero bearings located in a muffler, or exhaust system for that matter.

What if the radiator slammed into the fan, bending the little pulley system in the water pump. Damage beyond the pump?
Old 12-05-2011, 02:38 PM
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It sounds like your engine is just plain worn out.
Old 12-05-2011, 02:50 PM
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buy some new pistons for your engine. these motors r dirt cheap to rebuild. and if u know what ur doing u can get some nice power out of them. or get a 22r block and bore it 80 over and put ur 20r head on it. then it would be over a 2.7 liter 20r. u would be happy with that trust me!
Old 12-05-2011, 03:03 PM
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Originally Posted by southernZ
Muffler bearings? Are you serious? The only logical way hitting a deer will affect how your engine is running is if it damaged the radiator, causing the engine to overheat. There are absolutely zero bearings located in a muffler, or exhaust system for that matter.



Buy them here

http://kalecoauto.com/index.php?main...products_id=10

Old 12-05-2011, 03:30 PM
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I've never rebuilt an engine and I doubt it is as easy as it sounds.

The power loss has only really been noticeable over the last monthish. I'm not burning or using any oil. Not even a leak. Just seems so strange that it has been happening so fast. It has been such a good strong pickup up until this point.
Old 12-05-2011, 04:32 PM
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nice james woods! mufflers sure do sound alot better when u replace the bearings. i even seen a diference in mpg.
Old 12-05-2011, 04:36 PM
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u have no other choice but to rebuilt it. its easy. i could help u. do u live in portland?
Old 12-05-2011, 04:41 PM
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I'm in Medford actually. How involved is the whole process? And if I do the labor, what am I looking to spend?
Old 12-05-2011, 05:07 PM
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very easy. way under a grand to rebuild the whole motor.u can keep ur stock crank,rods,they are the same as a 22r block if u want a 22r block. u just need pistons and have the block bore and honed, new timing and have some one grind ur vavles. medford is a ways from me in from portland,
Old 12-06-2011, 04:13 PM
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Originally Posted by James Woods
That is the biggest crock I have ever seen..... I guess he will pull the "muffler bearing race out with those little tweezers". I truly hope y'all are joking about "muffler bearings". If not, what could possibly be in there to need a bearing?
Old 02-12-2012, 10:54 AM
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Originally Posted by Sparkyonfire
I have a 1980 Toy 20R 4x4. Just got it a few weeks ago and love it! It ran ok until a couple days ago then I noticed a loss of power. Maxed out 30mph in 3rd gear and had to use 4low to get up the hill to my house. Checked the plugs and it looked as if only 2 of them were firing and checked the gap. Checked the distributer and vacuume advance. Fired it back up and now I have full power. At higher RPM it will miss just a bit sometimes. Any Ideas?
vacuum advance? timing, valve adjustment.

one recommendation I read on toyotaminis is to replace all vacuum hoses.. I plan on doing this myself in the next few weeks. clean/rebuild carb?
Old 02-12-2012, 11:27 AM
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I'm in medford oregon as well. Well if you end up getting rid of it for cheap I may be interested in taking it in. Let me know if I can help any, I am not a great mechanic though.
Old 02-17-2012, 04:59 PM
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Ok....put on a new rebuilt carb, intake manifold gasket, timing chain cover gasket, fuel pump, plugs, oil change, and tuned it. Runs great! Awesome compression. There is hope for old trucks. Thanks for all the imput.
Old 02-26-2012, 05:55 PM
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how the hell did that change your compression? was your timing that off?

hahah...that site is great they also have O pipes for those running duel exhaust. 100 percent backpressure!
http://kalecoauto.com/index.php?main...rkg0rb0urj1s55

piston return springs could be a good idea too, might as well if you rebuild
http://kalecoauto.com/index.php?main...products_id=27

Last edited by ConSeann3ry; 02-26-2012 at 06:00 PM.
Old 02-26-2012, 07:28 PM
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Originally Posted by James Woods
That's funny! Be sure to use the really high temp grease when you repack those muffler bearings!
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