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Found 5 results

  1. Hello everyone My first post here, hopefully first of many I've been doing some research about a project I'm currently planning, and I have noticed that the good people here have a very deep understanding of the engine I'm working on, so I'm asking the question here. I have an E30 with the M10 engine, and I'm planning to do turbo upgrade to it in the future, currently I'm reading everything I find, I learned a lot from the megasquirt efi build on the faq here. I live in a very hot climate, and currently with the stock radiator and waterpump, my car cannot sustain "spirited driving" in this hot summer, or even long distance casual cruising between cities. Not that it has blown up or anything, just that the temp gauge goes a lot higher than it should. So, while planning the turbo build, I have decided to get a turbo with oil AND watercooling, to extend the life of the turbo. With this choice, I have also decided to get a bigger radiator, electric fans, and also electric water pump. And we arrive at the question of today: what is the actual route of coolant in this engine? I'm asking this because I want to erase the mechanical water pump, and get the electric, so it moves more water, and can also keep cooling the engine, while it is off; I've noticed the temp goes high after turning it off, because of the heat soaking effect I'm told. So, where do you think I should put the electric pump? Also second question, I'm going to control this pump with the ecu, that is going to decide pump load based on engine coolant temp, so if it's cold, it wont run, if it's a hot day, it will keep running even after the engine is off, so I don't think I need the regular thermostat anymore, am I correct? Also based on what I can see from looking at the engine, I have drawn a very, very, simple diagram as to how it looks, but I haven't figured out the direction of the coolant flow, so, maybe you can help me out. Thank you for your help
  2. Feel like I've been talking a lot about water pumps lately so sorry for all the questions - learning a ton. Some of you may know that changing a water pump on later cars (for me a 76) with AC can be quite challenging with the compressor bracket protruding in front of the waterpump. One of the WP bolts actually runs through it. What happens is that it's damn near impossible to bolt the new WP in place without the paper gasket moving in the process. I've already attempted once, put everything back together only to have the pump immediately weep coolant right from the seem. After researching a little on FAQ I found a Roundel article from 86 (attached below) that states one should file 2mm from the bosses of the two bolts nearest the bracket. This apparently creates enough space to slide the new WP in without moving the gasket. Can anyone attest to this and if you had success? Any tips in the event in the event i have to do it. It also says ditch the paper gasket and go with 100% silicone instead. I've read up plenty to know sticking with paper is the best way to go.
  3. Hey folks, I've searched the FAQ and have read some great write-ups but haven't necessarily found what I'm looking for on the subject. I had almost finished with my water pump swap this past weekend and was tightening the bolts when one of the shorter ones (11 o'clock location) seemed to bottom out premature. after making sure I had the correct bolt in, I gave it a really mild turn and sadly, stripped the threads in the hole. there must've been some debris or something in the hole that I missed. Anyway, I need to repair the hole and was looking at tapping vs helicoil and time-sert. A buddy of mine even suggested filling the hole with JB weld and re-tapping with the original size die but I'm not sure about that. Would greatly appreciate your thoughts on the best approach to make this repair! thanks, Mitch
  4. I'm replacing the water pump, thermostat & hoses on my 71 02. Should be a simple remove & replace but does anyone know of any write ups, DYI or guide on the replacement? Just thought it wouldn't hurt to have some guidance since it's my first time. Please let me know! Thanks guy
  5. Hey Guys, Long time since I have been on but feels good to be back, I have the car down in Virgina now. I have been using the car as my daily driver on and off, but lately the cooling issue seems to be coming back up. I will be driving it and within a few minutes the temp gauge will be near the top...If im cruizing on the highway It will be like ¾ way up however If I increase rpms to like 4000 it will drop down…sitting in traffic im like ¾ hot…I had a similar symtomps before and when the headgasket blew I replaced water pump, thermostat, top end rebuild, fluids, etc ...The car does not seem to be running hot at all which is the big mystery. I was thinking about replacing thermostat again with like 71 degree on, possibly its sticking and use genuine BMW antifreeze versus generic stuff, temp sender unit, and redo the wiring…appears to be abit fryed….any thoughts before I go through with this work?? Any help is much appreciated guys, trying to get this done before my next patrol!


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