locodrftr Posted October 27, 2007 Share Posted October 27, 2007 ok well i got a 72 240, and the motor i recently purchased that was said to have been rebuilt was overheating so after checking and replacing waterpump hoses and radiator i decided to pull the head off and see what was up. why did i do that because everytime i would rev the motor i could see the water bubble up and out the radiator so well what do u guys think? here are some pictures of the head and also the pistons....the pistons i think are overbored not sure but here are all the pictures of the block and head of the rebuilt motor...any comments and this is a L24 p30 and E88 and the head gasket Quote Link to comment Share on other sites More sharing options...
locodrftr Posted October 27, 2007 Author Share Posted October 27, 2007 headgasket looked good and my thought is the head might be cracked or something,i have another head that i got rebuilt in june that im gonna throw on and see if the problem goes away i'll later take the head to get checked if its warped or cracked....ohh and here is pic of the rebuilt head and now i know its good because it was on my other block... new... now used Quote Link to comment Share on other sites More sharing options...
RedNeckZ Posted October 27, 2007 Share Posted October 27, 2007 The head may have cracks between the valves. I have had it happen between 3 sets of valves. Had to take it to a head shop and have them weld it back up. It only showed up after the head warmed up. It would drain the radiator of all of the water over a period of time. If you take it to someplace that welds. Make sure they can weld aluiminun. You will have to have the valve seats replaced also. Then have a three angle valve job done. With the new way of welding around us, we do not have to get rid of the heads any more. From what they say, they can fix almost everything on our heads now. Besides the common port and polish job, they can also weld the bowl area and reshape it. So take it to someplace like a head speciality shop and have them check for cracks in between the valves. Good Luck, Rich. Quote Link to comment Share on other sites More sharing options...
JSM Posted October 27, 2007 Share Posted October 27, 2007 Did you check your thermostat? Meaning it was working properly and the bubbles you saw weren't from overheating? Sometimes the guage can be misleading. Mine was doing that put a new 160 thermostat in and it ran like a champ. Quote Link to comment Share on other sites More sharing options...
locodrftr Posted October 27, 2007 Author Share Posted October 27, 2007 hey yeah thanks rich... but now something else caught my eye......the rebuilt motor i purchased seems to have been sleeved or at least i think so what do u all think? heres a comparison of the block i bought to the one that came with the car. i wonder if this my problem with overheating... Quote Link to comment Share on other sites More sharing options...
locodrftr Posted October 27, 2007 Author Share Posted October 27, 2007 i was running without a thermostat and it wouldn't overheat driving in the street only on the freeway. And i read some posts about water not getting around the cylinders so i bought a new thermostat but that made the car over heat quickly... Quote Link to comment Share on other sites More sharing options...
fhptom Posted October 27, 2007 Share Posted October 27, 2007 Not an engine builder but looks like you have the same problem with both heads. If you look at the #2 & #4 valves they are whiter compared to all the others. Not sure if that is a water problem or mixture problem. Tom Quote Link to comment Share on other sites More sharing options...
locodrftr Posted October 28, 2007 Author Share Posted October 28, 2007 yeah the carbs i got with the engine were and still are pretty bad i dont know about the actual fuel consumption of each carb....soo i dont know i just look at the plugs... Quote Link to comment Share on other sites More sharing options...
locodrftr Posted October 28, 2007 Author Share Posted October 28, 2007 Well i got everything back together and im still having the same problem... water will bubble out the radiator when engine rpm are high....well not that high but like 3 or 4k....im stumped Quote Link to comment Share on other sites More sharing options...
rztmartini Posted October 29, 2007 Share Posted October 29, 2007 what pressure is your rad cap? might not necessarily be an overheating issue...(for your sake, I hope it isnt a bad rad cap) might want to try a stiffer spring, see if it helps??? do you have an aftermarket gauge? not sure how accurate the 35+ year old temp gauge would be. just trying to throw out suggestions...not sure if any help Quote Link to comment Share on other sites More sharing options...
locodrftr Posted October 29, 2007 Author Share Posted October 29, 2007 yeah, well thanks for the help everyone but like everyone else i think i might have fallen victim to a crappy radiator....i did not think it was the radiator seeing as i had it wroughted out less then 4 months ago....im hoping this is it...i guess when i installed the new block and head i never flushed them, i just installed everything as is and connected it to the radiator....im assuming junk got into the radiator and cloged some passages and wont let the water circulate fast enough....so i removed it and i am about to take it to the shop to get checked....i'll post some pics when i get back and keep u all updated.... Quote Link to comment Share on other sites More sharing options...
locodrftr Posted October 29, 2007 Author Share Posted October 29, 2007 on with the pics... Quote Link to comment Share on other sites More sharing options...
locodrftr Posted October 30, 2007 Author Share Posted October 30, 2007 now cleaned and a lesson well learned.overall cost $25 headgasket $48 bucks to clean and check radiator, was about 50% clogged got it done at Ricks Radiator 693 E. Arrow hwy Azusa (626) 967-7518 Problem solved...........!!!!! Quote Link to comment Share on other sites More sharing options...
JSM Posted October 30, 2007 Share Posted October 30, 2007 I know this sucks for you, but I learned something through your crisis! Thanks for keeping us up to date. Quote Link to comment Share on other sites More sharing options...
locodrftr Posted October 30, 2007 Author Share Posted October 30, 2007 Glad to help someone, i know ive gotten many answers by going thru the forums and learning from other peoples mistakes so hopefully people can learn from mine as well.... Quote Link to comment Share on other sites More sharing options...
kastmaster Posted October 31, 2007 Share Posted October 31, 2007 hey thanks for posting this thread. It was definitely helpful for me as well. Sorry to hear that you had to take off the entire head only to find it was just the radiator. But a lesson well learned is right! Very helpful thread. Quote Link to comment Share on other sites More sharing options...
Evan Purple240zt Posted October 31, 2007 Share Posted October 31, 2007 I had the same thing happen years ago before I attended SEZ with my zcar. I got the radiator rodded out, popped it into the car and drove to 'bama with no problems. Evan Quote Link to comment Share on other sites More sharing options...
locodrftr Posted October 31, 2007 Author Share Posted October 31, 2007 glad to help u all out, pulling the head is no big deal, its removing or installing headbolts that worries me lol had two break on me b4 one on removing the head and another installing head. was not cool at all.... Quote Link to comment Share on other sites More sharing options...
Mr.INSANE Posted October 31, 2007 Share Posted October 31, 2007 wow my trucks radiator has never been cleaned and i've never had overheating problem's Quote Link to comment Share on other sites More sharing options...
Sideways Posted October 31, 2007 Share Posted October 31, 2007 now cleaned and a lesson well learned.overall cost $25 headgasket $48 bucks to clean and check radiator, was about 50% clogged got it done at Ricks Radiator 693 E. Arrow hwy Azusa (626) 967-7518 Problem solved...........!!!!! Azusa you say? Whos up for a gmr run? Quote Link to comment Share on other sites More sharing options...
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