LegendsRacer - Legends & Bandolero Racing Forum
LEGENDS => Engine Care & Tuning => Topic started by: faster12 on January 27, 2013, 02:10:48 pm
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Ok guys after a long season with my dirt car I finally got to take my legends car to the track yesterday. Months ago when I took the car the oil temp was pushing 300 degrees so I improved my oil cooler system. the changes I made seemed to help a lot at the shop but not so much on the track. The car was setting for a long time before I bought it so I got to thinking maybe I've got trash in the carbs which is causing the engine to run lean in turn increasing my temps I also noticed that the car seems to idle erratically so I started looking for a possible air leak which leads me to my question how tight are the clamps from the intake to carb supposed to be? The clamps have a little spacer in the middle but the clamps are no where near closed up to the spacer. Should it be?(http://img.tapatalk.com/d/13/01/28/egemypaq.jpg)
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Spacers on carb clamps are there for a purpose. Fasteners should be tightened until seating against spacer. The spacer also serves as a stop so someone does not overtighten these clamps causing carb boots to get cut, thus causing an air leak. As far as your issue, go ahead and tightend up all four clamps up to the spacer stops and see if this curers problem. You may have had an air leak causing lean condition due to clamps being loose. If this does not help, disassemble and inspect carb boots for cracks all the way thru the boot. Boots often show signs of cracks on the outside of the boot, but the crack does not always penetrate thru entire thickness of the boot.
Good luck!
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how long are the spacers?
Robert
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What color are your plug readings? That may give you thoughts as to lean or rich, jetting, etc...
Cracks in the boots can be fixed with rubber coatings for a temporary fix. Shop around for boots. I have seen the prices all over the spectrum.
Steve
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The 600 way of reading oil temp is at the end of a trough where oil doesnt circulate, it just sits and bakes. Dont pay attention to the factory gauge, just shoot the oil filter with a temp gun when you come in and i doubt you will see over 250.
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I've tightened the clamps and ran the car at idle for 30 mins in the trailer the oil temp reached 300 degrees which didn't seem bad considering there was no air flow but the problem has only showed itself on the track in the past. I've also gotten a can of carb cleaner and sprayed all around the intake I didn't notice and change in the engine sound so I don't think I have a air leak now. the plugs looked white like they were lean. Can y'all think of a good way to test the problem without taking the car to the track.
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If you are still relying on the factory gauge to give you accurate readings, you are fighting a never ending battle. If you have an oil pan off of an engine you will see what im taking about...
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I checked the temp at the filter and its within 30 degrees of the gauge so I don't think it's to far off. Plus why isn't everyone else's gauges pegging out?
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What are you running for oil?
You can PM me isf you don't wantto start another Great Oil Debate ::)
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haha mobil 1 full syn 20-50
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How are the carbs jetted? Too lean will heat it up
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That I couldn't tell ya. I'm guessing I take the bowl off the carb and ill find them there?
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Yes,
If they are 110's or 112's for mains, that'll heat you up real good...melt a piston even
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ok i may get to go out there in a few mins if not maybe tomorrow. is there anywhere i can find a break down of the carbs? also I was thinking maybe i need to reset my valves is there a guide to do that anywhere around here. thanks for all the help guys!
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Check out this previous thread for adjusting valves... :)
http://www.legendsracer.com/index.php?topic=201.0
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I took the carbs off and found it had 122.5 main jets. Could the carbs being out of sync cause the problem? I'm going to check the valve clearance in a few days I don't have the tools to adjust them but at least I will know if there out of adjustment.
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Thanks guys for the help