running a small block on 7 cylinders
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running a small block on 7 cylinders Hi,
2 Months ago I bought a very nice '84 chevy RV 350 5.7 V8 vor my journey along the west coast. 1 month ago it started burning oil by blowing blue smoke out of the pipe on deceleration. I thought of valvestemseals but the compression check varified a dead hole with 0 compression. The scope gave me an idea of what's going on in the chamber: There is a huge gap of at least 3 mm between piston and cylinder. A piece of a piston ring used to bang around in there for quite a while it seems. Now the amount of burning oil is inacceptable (1 quart/ 200miles) and it seems to need a complete rebuild.
But here is my weird question: Since I need it to keep on going for only a view more weeks a rebuild would be to expensive. But I really need to get rid of the blue smoke. So what I tried is removing rockers, lifters, and rods to keep the combustion chambers intake an exhaust closed. But guess what: it started to backfire.
My question: Does anybody has an indea accept to not start te engine or replacing the piston or tips like run the engine without oil?
What would be the cheapest way to get rid of the blue smoke?
2 Months ago I bought a very nice '84 chevy RV 350 5.7 V8 vor my journey along the west coast. 1 month ago it started burning oil by blowing blue smoke out of the pipe on deceleration. I thought of valvestemseals but the compression check varified a dead hole with 0 compression. The scope gave me an idea of what's going on in the chamber: There is a huge gap of at least 3 mm between piston and cylinder. A piece of a piston ring used to bang around in there for quite a while it seems. Now the amount of burning oil is inacceptable (1 quart/ 200miles) and it seems to need a complete rebuild.
But here is my weird question: Since I need it to keep on going for only a view more weeks a rebuild would be to expensive. But I really need to get rid of the blue smoke. So what I tried is removing rockers, lifters, and rods to keep the combustion chambers intake an exhaust closed. But guess what: it started to backfire.
My question: Does anybody has an indea accept to not start te engine or replacing the piston or tips like run the engine without oil?
What would be the cheapest way to get rid of the blue smoke?
You need to keep the lifters in the lifter bores or you'll have oil pressure issues. If you just remove the push rods the lifters might jump out. So there is your problem. Find a way to keep them in the bores or just pull the push rods and chance it. If the engine has a lot of miles on it the lifters are probably varnished up and will stay in.
Friend of mine ran a Y block Ford for about 3 months with one rocker arm shaft off. He drove 35 miles each way to work. Ran like crap with 4 dead holes but it never let him down. One Saturday he put a junk yard rocker arm set up on, fired it up. After it quit smoking it was good to go
Al 95 Z28
Friend of mine ran a Y block Ford for about 3 months with one rocker arm shaft off. He drove 35 miles each way to work. Ran like crap with 4 dead holes but it never let him down. One Saturday he put a junk yard rocker arm set up on, fired it up. After it quit smoking it was good to go
Al 95 Z28
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Joined: Sep 2012
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just in case I find a way to keep the valves close ( cut the tip of the rockers). What would be the best to prevent backfire? close both in and exhaust ? Just close one? where does the backfire come from?
assuming its carbed, your still running fuel down too that cylinder, since its just stuck there with the valves closed, probably causing your backfire.. assuming its out the intake.
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