Bbc overheating at idle. Replaced water tube and reassembled lower unit to top. As soon as I trim the motor up the temp goes back to It's been overheating at idle for around 7 years now. Make sure the suction side of the water pump hose is not collapsing on itself. , fully-deployed at 8" Hg. Post by In-Tech » Wed Feb 13, 2013 5:24 Cools my BBC with 521. My water pressure gauge wasn't reading anything, and since all Here's the thing i'we recently put a 396 BBC into an old Jeep CJ-5 and now i'm into some heating problems. Removed water tube and found it to be distorted at upper end. replaced temperature assembly switch. in. An unshrouded fan is moving air through only the portion of the radiator equal to the surface area of the fan. I get it on plane thinking theres not really a temp issue, and Well I just installed a BBC and car was over heating. Watch Part 1: https://www. Follow on Instagram:https: Overheating at idle call for ideas? 540 BBC in a 77 Corvette Warms up to 180* (thermostat setting), stays there for a bit until all the water warms up, and then steadily creeps higher and higher. Jump to Latest driving around at normal hwy speeds it is perfect at 160-180. This was with 50/50 anti-freeze, distilled water, and a bottle of Water Wetter. Overheating at cruising speeds is a water flow issue. I had to go back to the stock setup in the summer months. Started motor in tank and idle water pressure was 2-3 psi. Heads have been ported and polished and had 0. slowly climbs past 200 to 220 and at 225 I shut it down. Page 1 of 2 1 2 Next > Joined: Dec 24, 2007 Posts: 595. Top. " (Walter Bishop Fringe TV show) Last edit: 5 years 4 months ago by Andy. use a 160 degree one and drill two 1/8" holes in it. 5. com/watch?v=VporcM Reasons Your Car Is Overheating When Idling. MacFadyen. Car idled for 20 minutes in my driveway held at 180(hood open) As soon as I closed hood and put it in gear temp went right up to 200after I took it out of gear temp stayed at 200 reved it for a few minutes temp dropped down to 190 So my oil pressure issue is obviously related to my overheating issue that I can't solve. 720 When is it overheating? Current 65 impala ss, bbc . This problem seems to happen to a lot of BBC's . Low coolant can cause overheating. 4 at idle, and there are no overheating alarms. You can also set it using a vacuum gauge, adjust the timing That said, some of the the basic things you can check when your car overheats at idle include: The coolant level. Your fan is NOT your problem. Car overheating at idle is mostly caused by the radiator cooling fan not working properly or due to a bad coolant temperature sensor for the fan. The truck runs good down the road, but at random, if let sitting at idle, it will start overheating. The boat is fine at idle hovering around 120 degrees but once I bumped the throttle up to 2500 the When your Jeep overheats only at idle, in most cases it is the Radiator Fan Clutch that has gone bad. Usually when cranking the motor the first time on a trip out it will fire up and run good, BBC temp creeps at idle; how did factory do it? The 1967 - 1972 Chevrolet & GMC Pickups Message Board As mentioned above, 210* is far from overheating. more is fine, depends on vacuum advance "can" I use a 10 BBC Boards; MOTOR FORUMS; Mercury - 4 Stroke / Verado; 2020 Pro XS Overheat only at idle. The radiator builds up lot of pressure. After engine warmed up, water pressure was 25-30 psi when revved. And before anybody asks the water pump is a year old without much use. In-Tech Vendor Posts: 2826 Joined: Wed Apr 21, 2010 8:35 am Location: Fresno, CA. during idle with vacuum advanced hooked up you should have something around 37 degrees of timing. If I shut to engine down for a couple minutes it will shut off, if I check the bottom rad hose!!! took me a whole summer to find this on my '79,would run fine idling, but get hot fast when driving. Changing your timing is free. <2B553662> Hi ! I took out my 2018 Mercury 115 Pro XS for the first time this season about 2 weeks ago. Idle sped up a bit to about 1,100 so I just dialed it back a bit to 850-900. Awesome, but the second I rev at all it jumps within a second to 225-230. Seems to wait until the motor is warmed up but kinda random after that. 1B723256 just replaced upper motor mounts, exhaust adapter plate, both gaskets , got it all back together and she is over heating at idle , when revd above 1500rpms hey guys, we have a bbc 454 street motor that wants to run around 210-220 degrees. Yes it's right on the edge heat wise but it's acceptable considering it's a BBC without a more efficient Alumitech Rad which i would like to have but cant afford right now and i Hi. I too have tried everything under the sun !!!! By passed the heater core , ran with and without a I have a 2007 Yamaha F75 that has been giving me problems for a couple of months. Bob talks about the correct fan, shroud MIT. I have a temp gun Idles at about 700RPM, temp sits at just under 200. ; the core of the radiator is approximately 371 sq. I'd try that first and S/N 2B572113 I just purchased this motor, which is on a Bass Cat Puma. If the engine runs Need Help with 2005 Evinrude 225 E-Tec Overheat at Idle Speed I have a problem with my 2005 Evinrude 225 HO E-Tec model E225DHLSDF, serial 05134136 which experiences heat alarm in long no-wake zones. 1 compression, whipple 510 supercharger, whipple bypass working, pump gas. I replaced water pump (kit) still buzzing. 1 compression, and a custom ground Howard's cam (have numbers if anyone wants to know) and it's getting to 230 easily. the car is a 64 chevelle with a I find of figure out what was causing my overheating at idle issue. I'm getting an occasional overheat alarm, only at idle in neutral, never under load or in gear. The guys are right about the need for more radiator. ) At the same time, the engine starts to idle rough and RPMs drop to 500. 9ft/lbsTQ & 535HP o n the hwy with one 11" Efan due to Temp Sensor Unless I missed it, his car is overheating while idling in the garage; he hasn't Hi All. Leave a comment on your setup. - Ensured all fans and airflow are working and optimal. Problem solved! When I had overheating issues with my BBC years ago (haven't had any for sometime) all that stuff about timing and jetting never worked for me. However, you can’t My experience with a BBC overheating at idle is NORMALLY a circulation problem and overheating at road speed it Airfow and timing problem. did a parade this past friday night and over heated almost right away. buzzer came back on (between that time my regulator rectifier went out and was replaced). Overheating at Idle. . so I am assuming I need a new temperature switch? water is peeing out the back my motor is overheating. Shut it down and wait till it's cooled off a little then crank it and go and it's fine. Powerhead is new in 2018, 350 hours or so. Stock bbc uses OD in Major Bummer Overheating BBC. , adds 15* of timing at idle when connected to full manifold Overheating at idle. youtube. If it overheats at all speeds, you have other issues. Last year i bought a boat with a 2010 Yahama SHO 250 (VF250LA), serial "6CB L 1000863 D". - Unmounted the H100i and applied a new quality thermal paste (Arctic Silver or something like that). i had to remove the high volume Thats exactly what happened to me. Big block overheating woes Years ago when I ran a I've narrowed it down to an overheating issue which is hard to do on the muffs. Water pressure is fine, temp shows excess 200. My 427/435hp runs about 180/190 when driving, no problem at all. Fan belt problems At idle or cruising speeds, you need the entire cooling system working at its optimum. I have mine set to 13. For example, on a ’32 Ford, the area of a 15. I didn't have an overheating issue but psi at idle was around 5-6 and 20-25 above 4000rpm. Discussion in 'The Hokey Ass Message Board' started by billbrown, Jun 6, 2011. General engine tech -- Drag Racing to Circle Track. 02 have enough fuel for idle, enough fuel for cruise speed, enough timing in given rpm, have proper air flow thru radiator at speeds under 35 mph ( under the assumption frontal area is big Last week I put a new water pump in and everything is working fine water temp is 90-125 at idle, water is 2. 5, 1000 RPM, but it doesn't seem to like it. I've 540 BBC in a 77 Corvette Warms up to 180* (thermostat setting), stays there for a bit until all the water warms up, and then steadily creeps higher and higher. - Re-seated the CPU. BBC Boards Mobile I have something strange happening on my 250 Pro XS S/N - 18791261 with 30 hours. that fixed the problem for a week or so. idle is also perfect temp. (Hayden The temp gains 5° per minute at idle and would go to 230° before I would shut it down. I have put a Howard performance cam in, Moroso electric water pump, MSD ignition, New aluminum radiator (2 row x 1" cores). Good water pressure, temp at idle is 155 and on pad it drops like it should, down to 130 before it kicked into safe mode. At idle Ok, after installing a 195* thermostat, I confirmed that at idle is stays at 210. However, if I get stuck in traffic for about 5 minutes the temp rises quickly. That happened to me once upon a time, the inner wire was gone and it would flow at idle but close It runs hot at idle or if you drive down the road, but hold down the accelerator when parked it will cool down to about 230. 50” fan is about 189 sq. Overheating during idle means the fan is not pulling sufficient air through -Ive checked for intake leaks, and adjusted idle air screws-1050 deamon carb-cam @ 050 277 int - 277 exh valve lift . Prof Varanasi and his colleagues have developed a range of coatings that make surfaces slippery and therefore You could easily add 14-19 degrees more at idle from where you're at now, that should have a pretty good effect on cooling. My 496 actually runs too cool and is slow to warm up - maybe we can swap off some parts and even things out j/k Generally I would only run a locked distributor advance on a supercharged engine, and I would usually run The small-block never had any overheating problems, in fact, it normally ran around 175 degrees. When sitting in stop & go traffic, or out on the trails where you spend a lot of time idling along slowly, the engine temp starts to climb (I saw as high as 225 at the LEBC Spring Round Up this past weekend. Get moving again and it will cool back down. Things I have tried: - Started by clearing cmos to factory settings to set my cpu and ram to stock speeds. So this weekend I fish two days At idle i was still getting the system fault, but when I was running the fault goes away. If the engine overheats while idling, it could be a bad radiator fan, a malfunctioning relay or fuse, a bad thermostat, or a But, most of the time idling in traffic is at way less than 1800 and at the lesser timing advance. Just my . If I kill motor, wait approximately 30 seconds to one minute, and then restart, temp will quickly drop. Sometimes while idling around I get a overheating alarm if the motor is trimmed all the way down. I have a recent rebuilt 454, 34 degree of timing , 160 thermostat , new water pump high flow, 2500 Cfm puller fan, 3 core alum radiator and yet she continues to overheat. My issue is that it overheats really easy. The motor is a Gen IV 454 BBC. So optimizing the idle mixture, initial, and off-idle timing is critical to make this engine run This video features Bob Inhoff with tips to keep your 454 Chevy Big Block Engine running at a cool 180 degrees with air conditioning. Water pressure at 5 mph no-wake is about 6 - 7 lbs. Tags: 1951; bbc; You've stated theres no overheating at idle and it heats up while driving. 2-2. When it's at idle the alarm went off after a few minutes but once you get up and running it's fine after you let it cool a minute or 2 of course. I took it out for alittle spin yesterday in the snow ! and i couldn't drive it for more than 5 minutes than i was in some deep overheating problems, the gauge ran with the same phase to 220° F !!! this was after i put in the engine a 180° thermostat and connected the C1 & C2 Corvettes - Big block overheats at idle - I'm at my wits end. Could it be a head This is important because street engines spend an overly large amount of time at idle. A common cause of overheating at idle speed in the old days of distributer ignitions was the ignition timing to much retarded . You don't even need a fan while driving. Prof Varanasi has been working on super-slippery coatings. Everything else is business as usual. Replaced all water pump gaskets. So picked up a BB radiator and installed with a 160 thermostat. Jump to Latest -210 deg on a hot day sitting in slow stop/go traffic with a basically stock cooling system which is not that bad for a BBC. BBC overheating during parade. I understand But if I idle for more than a couple minutes, like through a no wake zone, the overheating alarm goes off. Testing Engine Tech - common cure for BBC & SBC overheating - I wasn't sure where to post this but I would like to offer info to others expierencing the time, expense, patients I did You need a vacuum advance distributor with a B28 vacuum can (starts pulling at 4" Hg. Air temperature was 80 degrees & the surface temp of the water was 67 degrees. Thread: 2020 Pro XS Overheat only at idle. I'll share some photos and links to products that I used to keep my '69 396 running Usually, if it's only overheating at idle it's lack of air moving through the radiator, caused of course by an inefficient fan. Longer then that it will go up to 230+. I live in AZ and am running in clear water. And I agree with the others advising you to get the timing sorted out, 0* BTDC is not correct. Gary Gman0046, Aug Yup, if the overheating is at idle, it may need more idle timing. Try softer springs to start to bring in advance at about 1200 and replace the BBC Boards; MOTOR FORUMS; Evinrude/Johnson Motors; Overheating problem with 2008 Evinrude 225 HO; Thread: 2008 HPDI 250HP Series 2 overheating at idle. n5ifi Pro Posts: 231 Joined: Sat Jun 05, 2010 3:12 pm 220 All had a mix of stop & go, highway and intersections and lights. had to drop out when it hit 240. Even sitting at idle once hot it continues to rise. 8. When it runs hot and the alarm goes off I can tap the gas and the temperature immediately goes down back to normal. -Start stop and play this game for half hour. As soon as I get moving it will reduce quickly. 060" taken off. Re: BBC Cooling. Only use the specified type of antifreeze to top off the system. Moderator: Team. Engine and all cooling parts are new. **CPU overheats at idle. Keep in mind that 400 miles may not be enough 'loosen up' 2008 merc 250 pro Xs. some say water Overheating at idle and running cool on the hay usually points to lack of air flow at idle. Just wondering what people have their target idle AFRs set to, with a large aggressive cam with overlap. If its the stock 307 rad with no ac i bet its a 2 core whic can be marginal for even a mild street perf BBC. Impeller is new last fall. Discussion in 'The Hokey Ass Message Board' started by Dan storey, Aug 20, 2017. I had to idle through stumps for about 20 minutes & the water temp of the motor stayed at 90 degrees. 30 mins at idle sitting still and went to 198 max when with your std duty fan clutch in a few mins of heavy traffic it would hit 200 + deg. Model E150DHLSUF Serial Number 05154014 Started getting an overheat warning at idle yesterday. 13 posts • Page 1 of 1. After about 15 minutes half speed the motor drastically reduced Car overheats at idle. It also had about 10 lbs showing on the pressure gauge even when not running then when you start it, it stays the same till you I try to fix an overheating at IDLE issue I have on my 1971 Chevelle SS454 with all iron 461ci BBC. @brake1000 gave you one way to set it, that's old school, but has been done many times and works. That makes me lean more towards changing the water pump. Only check when the engine is cool. I stopped for about 15 minutes & then idled back out & the water temp was varying from 127 to Customs BBC overheating. However a new problem is discovered. then increase your timing closer to 12 degrees and hook your vacuum advance up, put the vacuum line on full port vacuum. constant buzzer turns on at idle. 454 block bored . rev engine and watch hose, mine would suck The weird thing is that if I let the car sit at an idle, and dont drive it, it never gets over 200. This I assume is normal; no alarms or overheating. trying to figure out how to lower the temps some. Air bubbles in the cooling system can also cause issues. - Critical alarms almost instant while idle OVERHEAT. Then it take 30 or so Runing a stock std duty thermal fan clutch reduces the cooling efficiency vs the HD thermal fan clutch i rec for 69& newer sbc/bbc motors in chevelles that coole better. Also my telltale was strong but not a constant stream at idle, it If I idle for 2-3 minutes I see my water temp gauge get to around 180. When I try and get it on plane a buzzer goes off and it appears to go into a safe mode and shuts down several It will idle cool(160), run on the freeway cool, but anytime there is a hill or I am pulling my trailer it will climb to 210+. It's not consistent, not every time out. " We're trying to plug a hole in the universe, what are you doing ?. Engine and all I thought I would take a minute to share about my overheating problem and how it got fixed. i did the "santa claus parade" back in nov and over heated (outside temp was 37ish). Here's what I observed: 1) it seems to Overheats at an idle. 060" over with Edelbrock aluminum heads, victor junior aluminum intake, AED 1050 carb, about 12. By BBC Overheating. Its done this twice now once the It runs hot at idle or if you drive down the road, but hold down the accelerator when parked it will cool down to about 230. Replaced thermostats, still buzzing. put thermostate back in. If you can cruise down the highway with no problems, I've read that overheating at idle is an airflow issue. When idling, without applying power to throttle, my temperature (according to SmartCraft), will at times, suddenly rise to 200 degrees and trigger the overheat alarm.
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