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Old 05-21-2013, 04:57 PM   #1
AFAP_Nor_CA
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Question my new turbo is running way to hot

i have a gc with an 05 wrx swap in it. also has a 2.5 sti block and heads fuel pump, and pinks inj. FMIC , short ram. I have been running the stock tdo4 wrx turbo and wanted to upgrade to something bigger so i got a TDO5H Billet 18G rebuilt. after the install it was very hot under the hood even my short ram intake felt as hot as the pipe coming off the turbo. with my tdo4 i could put my hand on the pipe just off the turbo and it was just a little hot, now you cant even touch it. and the air going into the motor is way hot. water temp is the same. The shop that i took it to (for tune) said that could not make big numbers with all that heat going in the the motor so its only has about 235 whp.at 14psi wich is what it was making before. Please keep in mind that before the turbo swap it all the pipes were nice and cool. the FMIC did its job very well with the Tdo4. now when i shut off the car i can hear the coolant boiling in the turbo and the over flow is pushing out water when the car is off. i have to keep putting water in. please note at idle no water comes out. I my self think its the turbo and i want to put a stock vf39 on it to see if thats it but I thought i would post this to see if anyone had this problem and or had some ideas of what i can check. I'm not driving the car this way.
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Old 05-21-2013, 07:59 PM   #2
SubaruWrxNewb
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You have a WRX swap that has a 2.5 bottom end and 2.5 heads?
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Old 05-21-2013, 08:10 PM   #3
WRB19
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Ask the shop whats wrong with it
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Old 05-22-2013, 07:26 AM   #4
ToneWrx02
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Quote:
Originally Posted by WRB19 View Post
Ask the shop whats wrong with it
This lol, the shopped that tuned it should be able to answer any of your questions alot better then any of us can.
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Old 05-22-2013, 07:42 AM   #5
69subaru360
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pinks are too small for an 18g and you probably have a blown head gasket, have it checked
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Old 05-22-2013, 02:57 PM   #6
atech34
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Quote:
Originally Posted by SubaruWrxNewb View Post
You have a WRX swap that has a 2.5 bottom end and 2.5 heads?
Interior maybe

Does sound like it could be the head gasket check your oil to see if it is milky.

Last edited by atech34; 05-22-2013 at 03:04 PM.
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Old 05-23-2013, 01:13 PM   #7
AFAP_Nor_CA
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its not the head gasket i have had them go on me with other subarus and its not. there is on water in the oil and the water ONLY overflows when you shut the car off. If it were the HG water would be pushing out all the time.
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Old 05-23-2013, 01:14 PM   #8
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Quote:
pinks are too small for an 18g and you probably have a blown head gasket, have it checked
yes but would this make it heat up?
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Old 05-23-2013, 02:58 PM   #9
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Quote:
Originally Posted by AFAP_Nor_CA
its not the head gasket i have had them go on me with other subarus and its not. there is on water in the oil and the water ONLY overflows when you shut the car off. If it were the HG water would be pushing out all the time.
Not always. I had a leak in a gasket that was small and would only make a fountain over 6k. But exhaust is supposed to be hot. I've never been able to touch a turbo or exhaust after a car has been run.
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Old 05-23-2013, 03:04 PM   #10
69subaru360
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Quote:
Originally Posted by AFAP_Nor_CA View Post
yes but would this make it heat up?
Sure, the head gaskets go bad and exhaust gas pushes into the coolant. Subarus almost never mix oil and coolant.

With any real boost and an 18g those injectors are 100% duty cycle and you leaned it out.
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Old 05-23-2013, 04:58 PM   #11
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again there is no exhaust in the water. when i got it back form the shop i drove it over 30 miles and the overflow was not even at the top. I even sat after the drive and let it run for 2 or 3 mins looking under the hood. Overflow did not move at all. Then i shut it down. about 10 sec later as i em hearing water boiling sounds coming from the turbo i start to see the overflow filling up and over flowing. now tell me how its the exhaust is doing that when its not even running? I told you i have had a subaru with that problem and it only pushed exhaust into the water when it was running or else there is no exhaust to push out the water.

ok so can we move on form head gasket please.
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Old 05-23-2013, 05:03 PM   #12
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Quote:
With any real boost and an 18g those injectors are 100% duty cycle and you leaned it out.
so are you thinking its the size and i should put a vf39 on it?
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Old 06-01-2013, 06:17 PM   #13
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ok i have a vf39 on it now and it makes better power but its still hot.(pipes) i also put a cold air intake and it did not help. It does not over flow anymore. any ideas?
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Old 06-01-2013, 06:25 PM   #14
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is there no tuning involved? you just swapping turbos? lol
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Old 06-01-2013, 09:50 PM   #15
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Have you burped the system correctly? Maybe you got lucky and did when you swapped turbos again that's why it isn't boiling over now. And you must have nerve damage in hands to say you could grab down pipe or turbo and it not be that hot after driving it.
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Old 06-01-2013, 10:06 PM   #16
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Ever consider an oil cooler and a bigger oil pan? Winging it here.
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Old 07-23-2013, 10:22 PM   #17
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Quote:
Originally Posted by meat_WRX View Post
is there no tuning involved? you just swapping turbos? lol
yes i did tune, its not my first day.

Last edited by AFAP_Nor_CA; 07-23-2013 at 10:38 PM.
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Old 07-23-2013, 10:24 PM   #18
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Quote:
Originally Posted by ryansx View Post
Have you burped the system correctly? Maybe you got lucky and did when you swapped turbos again that's why it isn't boiling over now. And you must have nerve damage in hands to say you could grab down pipe or turbo and it not be that hot after driving it.
Never said i could grab the down pipe. i was talking about the intake side. lol as far as the "burp" its not my first day thank you.
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Old 07-23-2013, 10:34 PM   #19
AFAP_Nor_CA
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looking back at my post i forgot to say that after i put the vf39 on it, it did not have the boiling sound. I went back to my stock set up with the TMIC for now. I think the fmic pipes get alot of heat soak. I looked at what other people were saying about they intakes being hot and i guess i was overeating. the tdo4 runs much cooler and thats what i was used to.
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Old 07-24-2013, 12:15 PM   #20
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What did the shop recomend that said your turbo is running to hot and you need to address that before making any more power? Im sure they had some recomendations as to whjat can be causing it or what can be done to fix it. Shops usually dont just say hey you got a problem you need to fix before we can put out more power for you. They usuallky wanna sell you whatever you need to make the most power. They have seen, tuned and worked on the car so they will be more helpful then anyone else.
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Old 12-05-2013, 12:16 PM   #21
AFAP_Nor_CA
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update: I read this http://www.i-club.com/forums/hawaii-...-fixed-238809/ and i remembered that i had took off the tgv reading (i dont know what its called) when I installed the injecters to give the fuel rail some room to move. I reinstalled it wrong. i did not know you had to twist it on. so the tgv was giving me a stuck open code but it must have been closed or who knows. now there is no cel and the pipes are not hot at all, they are running as cool as when i was running the tdo4. I plan on doing a tgv delete some day soon.

If anyone is having this problem it is worth the time to check it out. it only took me about 5 mins to take it off and reinstall it right.
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Old 12-05-2013, 12:32 PM   #22
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sweet find glad you resolved your issue...
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