1991 toyota corolla, going to be run in a demolition derby but i would like not to be the first one out with a blown engine. Car originally became problematic after being run with no oil for a short time. Knock quieted when run with very thick oil.
2006-09-07 18:11:01 · 14 answers · asked by jon 3 in Cars & Transportation ➔ Maintenance & Repairs
Do urself a favour, just run the thickest oil u can find. It's only gotta live a couple of hrs max right? Don't try pullin apart the engine, especially bottom end, its just not worth it considering what u want it for. Besides that: its a Corolla! Bit of saw dust in the sump always does wonders if u get desperate.
2006-09-07 18:16:11 · answer #1 · answered by Anonymous · 0⤊ 0⤋
If you remove one of the rods you will reduce your oil pressure even more and cause the engine to lock up after a very short time. Drop the pan and replace the rod bearing on the rod that is knocking. By replacing the bearings, you will get a little more time from the engine. The body of a Corolla will not take much punishment so your derby time will probably be short anyway. The little Corolla wrinkles pretty easily, so , run the engine like it is and it should last as long as the body will.
2006-09-08 01:36:53 · answer #2 · answered by turbietech 4 · 1⤊ 0⤋
No !!!... The crankshaft has a drilled oil passage charged with pressure oil which squirts lube into the tight clearance(s) between the rod bearings and rod journals carrying the bottom rod ends... When a rod bearing fails, the tight clearance is lost, the rod loosens and rattles noisily around the crank throw. Here your oil pressure is then dumped off because it is no longer RESTRICTED by the tight bearing clearance, and the general oil pressure to the rest of the engine is seriously reduced. This loss of pressure to other critical parts, will result in GENERAL ENGINE DESTRUCTION, a rapid progress from one damaged rod bearing / crank throw... to the whole engine...
The high vis (thick) oil will delay the failure somewhat... But why destroy an engine from fan to flywheel for just an additional few minutes of operation???...
2006-09-07 19:50:39 · answer #3 · answered by c-rascal 1 · 1⤊ 0⤋
If you remove the rod that is knocking, you will loose any oil pressure to the rest of the engine. Best thing to do is to remove oil pan and the rod cap of knocking rod, check the crank journal for any scoring or out of round. If it looks OK to semi-OK, replace the rod bearing and glue the pan back on with sealant. Since it's a derby car, there isn't much to loose!
2006-09-07 18:22:26 · answer #4 · answered by scottr59 1 · 0⤊ 0⤋
If you remove the crook rod block off the oil from that journal.Apeice of leather wrapped around the crank aand a couple of hose clamps does nicely.I done a thousand miles in the desert and arrived at destination minus 3 rods and pistons on a V8.Dont worry about the gas as there wont be a piston to suck any in.
2006-09-07 21:06:31 · answer #5 · answered by frank m 5 · 0⤊ 0⤋
Don't use sawdust. That will only cause you more sever problems. It's not worth it. Go to your local NAPA AUTO PARTS store and purchase a quart of POWER PUNCH. Much cleaner than 90 weight, which has NO detergents. Mixes with the oil, and WILL NOT bond to the metal, like gear oil does. It will not STOP the rattle completely, but it will lengthen the life of the engine by quite a bit. Might even allow you to stay in it long enough to WIN depending upon how bad it's "knocking"!
2006-09-07 18:34:50 · answer #6 · answered by Anonymous · 0⤊ 0⤋
Yes.
A V8 would not be effected much (1/8th of the power).
But, a 4 cyl. would really feel the removal.
Try running a thicker than normal oil in it as the engine will run really hot in a derby it will thin out and still lubricate adequately for the length of time that you'll need it.
2006-09-07 18:19:35 · answer #7 · answered by drkman11 2 · 0⤊ 0⤋
Forget the sawdust, it will make the oiling problem worse by clogging the pickup tube. The best thing to do is just run it with the knock. It will still run with the bad bearing, just change the oil to 20W-50 weight and go for it. I have seen engines run for years with a rod knock, and still give useful service.
2006-09-07 18:20:07 · answer #8 · answered by yugie29 6 · 1⤊ 1⤋
Take the rod out and close off the valves if you can
This way you won't get gas build up in the pan taking out another rod while at the derby
Or just try 90w gear oil ,,it will take longer for the gas to thin it out.
2006-09-07 18:19:33 · answer #9 · answered by Vulcan 1 5 · 0⤊ 0⤋
Use thick oil!! Dont waste the time on a car thatll be half its present length when done.Besides, if its knocking, itll still run on that cylinder (or should) just not as effecient.
2006-09-11 16:26:11 · answer #10 · answered by baggedmaroon_s10 1 · 0⤊ 0⤋