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Old 07-05-2009, 03:40 AM   #1
budman5201
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Member#: 149572
Join Date: May 2007
Default Turbo 2.0 in porsche 914 Temperature problems

I have had a ej25 NA engine in my porsche 914 and loved it. No temperature problems whatsoever. Ran nice, etc. I now tossed that one, and upgraded to a 2.0 turbo JDM and i am getting it tuned in with my Link STORM ECU and the temperature keeps on popping up, but the more i rev it and if i drive on the freeway, the temp comes down to 90 Celcius. (think thats 194 F). I assumed i had an air bubble somewhere, but i burped it and it will not burp anymore. (level of water stays the same in resevior) if i idle for a while the temp pops up to 100-110 celcius. (then i rev it and it comes right back down to 90)

My coolant route on the engine. I eliminated ALL extra hoses, etc. The coolant now runs when its cool (thermostat closed) from thermostat through the block and out the back of the head to the turbo and then through a single coolant line back to the water pump. (i put a new water pump in with only one outlet. (i have no heater,etc i live in arizona)

When warm it sucks both radiator coolant and the turbo coolant through the water pump, up the block and out to the turbo and out the radiator and back from both to the pump again.

Is my route wrong, and why?? (no coolant throttle bypass or coolant for idle valve bypass anymore)


thanks guys i need help
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Old 07-05-2009, 03:53 AM   #2
hondaeater69
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this might not belong in the newb section
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Old 07-05-2009, 04:03 AM   #3
budman5201
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i cant post yet in the other sections, so this is where i had to ask my question , sorry
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Old 07-05-2009, 10:29 AM   #4
quazimoto
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Have you tried changing the thermostat?Maybe the fans are not working?
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Old 07-05-2009, 12:58 PM   #5
budman5201
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nope not yet, i did test the old one before putting the engine in. I boiled water and it opened like it should in a pot on the stove. I measured the temp too of the water with my laser temp gauge.
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Old 07-05-2009, 01:20 PM   #6
theotherguy
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Fozzy lifted,'01 RS 6spd

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Quote:
but the more i rev it and if i drive on the freeway, the temp comes down to 90 Celcius. (think thats 194 F)
Makes me think the same way as below

Quote:
Maybe the fans are not working?
Did you change the size of any piping or hoses when you modified it over the NA set up?
Did you run your NA in AZ last year during the summer? I'm assuming its hot as hell there right now, how'd it do? Both of my VWs with water cooled conversions hover around 100C at idle with the fans running even when its 75F. These set ups are tricky to burp, with the long coolant lines from front to back of the car its tough to get all the air out, hopefully you have a cap up front too to monitor coolant level there.

Hopefully Matt Monson or some of the other 914 guys see your post. Might be worth shooting him a pm if you can.

Last edited by theotherguy; 07-05-2009 at 01:25 PM.
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