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08-20-2009, 10:58 PM | #1 |
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86 motors
I just couldn't pass up this truck it's an 86 deluxe ,but the motor is weak,so I talked to s bud that says he had one brand new and that over time the motor got clogged up.And says that,that's what's wrong with mine.Ifs that's the case how do I fix it and how do I prevent if from happening again.
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08-20-2009, 11:53 PM | #2 |
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Re: 86 motors
i say the whole reason its weak is...
A. its a lo-po 305 B. the quadajet is prob worn out C. broke vacuum lines. --------------------- i would replace the intake with an aftermarket and go with a nice carb, 600cfm will be enough. i guess if you wanted you could run seafoam though the engine or pour water down the carb at high rpm to break up carbon. Last edited by fiddy9apache; 08-20-2009 at 11:55 PM. |
08-20-2009, 11:58 PM | #3 | |
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Re: 86 motors
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'69 Dodge Charger R/T 440, 727, 3.55 Sure Grip '68 Plymouth Road Runner 383, 727, 3.23 Sure Grip '89 Dodge Diplomat ex cop car 408, 727, 3.55 Sure Grip '77 Dodge Monaco ex cop car 440, 727, 2.71 '79 Dodge 'Lil Red Express pickup 360, 727, 3.55 Sure Grip '12 Dodge Challenger SRT8 392, M6, 3.92 '85 Chevrolet C-10 SWB 2wd 305, TH350, 2.73 |
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08-21-2009, 12:22 AM | #4 |
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Re: 86 motors
Ya I would do a complete tuneup. Check vaccum leaks and such and check out your carb. Then go from there and see if you can get it running better and do a rebuild or swap motors out.
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*HOODS is what I answer too* -'79, '77, '88 Pickup Sold, '85 Camaro, '83 T/A, '81,'83,'90 K5 Blazer All Sold -'79 3/4 ton "Big Yellow Bananna" Lifted 4spd. 39.5 TSL Swampers, The money Pit -'86 K5 Blazer Silverado 6.2 4" lift 35"s -'95 Ext. Cab Shorty 4" Tuff Country rolling 35" M/T's -'83 Monte Carlo T-Tops. 126,500 Original Miles -LATER I would rather push a Chevy then drive a ford!!
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08-21-2009, 12:45 AM | #5 |
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Re: 86 motors
Thanks guys ,I think I'll start with the sea foam and let you guys know how it goes.Question can I put it in the engine and in the carb at the same time?
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If it ain't a chevy,I don't want it Last edited by greygoose; 08-21-2009 at 12:45 AM. |
08-21-2009, 01:02 AM | #6 |
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Re: 86 motors
It works properly added to the gas tank, so I wouldn't flush it straight down the carb.
Alot of people say it works great, I've used it and haven't noticed any improvements whatsoever on several vehicles I've owned. So you'll have to let us know what it did for you.
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'69 Dodge Charger R/T 440, 727, 3.55 Sure Grip '68 Plymouth Road Runner 383, 727, 3.23 Sure Grip '89 Dodge Diplomat ex cop car 408, 727, 3.55 Sure Grip '77 Dodge Monaco ex cop car 440, 727, 2.71 '79 Dodge 'Lil Red Express pickup 360, 727, 3.55 Sure Grip '12 Dodge Challenger SRT8 392, M6, 3.92 '85 Chevrolet C-10 SWB 2wd 305, TH350, 2.73 |
08-21-2009, 11:46 AM | #7 |
Parts and more parts
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Re: 86 motors
How many miles on the engine? What is your timing set at? What condition is your exhaust in? A plugged converter or too low of a timing setting will affect your performance.
Seafoam will help, as will Rislone additive. I have done what we always called a "Liquid valve Job" to remove carbon from the tops of pistons on many older engines, but there are those that think the world would come to an end doing it. That is the pouring of a fluid down the carb at a very slow rate. It does work, though no matter what one may think. A good cleaning of the fuel system components, replacement of the distributor cap and rotor along with good quality plugs and wires will make a very noticeable difference. Not sure about your smog laws---setting the timing slightly advanced will give a better throttle response. Change out the 305 to a 350 will give it a good boost, also. we tooke the engine out of my Son's 86 and replaced it with a 350 and we are not sorry that we did it. |
08-21-2009, 09:01 PM | #8 |
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Re: 86 motors
Ok today I got a little busy but I was able to do some ole fashion cleaning inside the motor. lol I ran a gallon,half and half diesel and kerosene and ran a little through the carb too,then changed the oil and filter.That's all I was able to get done today.It seem to run a little better.Tomorrow I'll change the plugs,wires,cap and rotor and see how that goes and report back to you guys.
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08-21-2009, 11:30 PM | #9 | |
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Re: 86 motors
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08-22-2009, 09:25 AM | #10 |
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Re: 86 motors
Don't forget a cam upgrade while you have the intake off. That era of engines was very prone to eating cam lobes and the cams were wimpy to start with. The worn out cams are what gave them such a bad reputation.
I put the Crane compu cam 2040 into my 83 vintage 305 along with a Performer RPM intake and 600 Edelbrock carb. Wow what a difference. It made great power and had just a little lope to it. The thing sounded great and ran even better. |
08-22-2009, 11:59 PM | #11 | |
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Re: 86 motors
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