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Showing results for tags 'waterpump'.
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I finally pulled the short block (SOA478H600R1) that I purchased a couple months ago out of the box and put onto a stand. Changed out the 7mm oil pump for a 9mm that I had (I don't think I'll need a 10mm as I'm a conservative driver, and this is just for a DD project). Looking at the pistons, they're labeled as 255 SH. Is this going to be a problem mounting with DOHC heads? When I was talking with a subaru parts tech over the phone I had specified that I wanted an EJ251 or EJ253 short block for '03-'05, and they had given me the part number. I had then talked with a different Parts Tech, and they confirmed that that part number was for what I had specified. Are the pistons the same? I thought the 255s were used with the AVL systems, and can't work with pre-AVLS. . Should I be looking for new pistons now? The current motor in my car is an EJ from a 2001 Impreza, with DOHC heads. I wanted to recreate the build as it is generally a nice and powerful (enough) motor. Also, I bought a brand new subaru water pump because I thought the stock one that came on the block was supposed to be forward facing.... What showed up is identical to the spare I bought. They are identical, right? Thanks all, Greg
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- frankenmotor
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Ok folks, I'm hoping someone out there can help guide me to my problem area. I have a 2001 outback wagon with the 2.5L. It runs greats, but recently is have been pushing the antifreeze into the overflow and not drawing it back into the system. I did the obvious and changed out the radiator cap for a new one. That was not the problem. I put the car up in the air and pulled the cover off to have a look at the head gaskets. They were dry. I squeezed the lower radiator hose and had antifreeze come out of the thermostat housing. I figured the gasket went bad and replaced it. That seemed to work for a bit, but on my way back from a 300+ mile trip the car began having the same symptoms again. I stopped, shut the car off and burped they system until I was able to open the cap. The overflow was full but the radiator was again low on fluid. I topped it off and made it home with no trouble. My thoughts are it's the waterpump, but I had already replaced that no more than 8 months ago when the timing belt was done. I am hoping it's not the head gasket, but I am not sure. Wondering if anyone else out there had a similar problem and could tell me what they had done to fix it. Thanks for taking the time to read/reply folks! -
I am trying to diagnose my overheating issue with my wagon. I am trying to find out if there is a good way to tell what the problem is? First I found a busted hose by the water pump, replaced it, it ran for a day without issue. Then it came back. Then I did the thermostat replacement. Then I found a small leak in a metal coolant line (near throttle) patched it with JB weld. I thought that would fix the issue. No deals. I am trying to figure out the next step to find the problem. Is it the water pump, radiator, head gasket? Something else. It does not blow white smoke. The water pump does not make noise. It does smoke a little under the hood near the throttle area. Could it be that it is not circulating oil properly? Could that be it? Any ideas on how to definitively find the problem will be very helpful. Block test next???? Thanks all.