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evo overheating after swapping new motor in

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Old Aug 27, 2012 | 06:29 PM
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evo overheating after swapping new motor in

So I swapped it my old 500HP evo 8 motor for another stock 8 motor..and I can drive the car but I have a couple issues

1. I changed all my vac lines and a shop still wants to change then for new ones..i'm tyring to get a new tune
2. It idles at 200 RPMs and can stay at 2k-2500rpms after I drive it
3. It overheats when I drive it for a couple minutes do I have to blast the heat

So I was wondering if anyone can give me any advice..im having troubles so any help will do..i'm also on speed density do no mafsenors..

Mods are
Garrett gt30, fmic, uicp,licp, exhaust.mani, 1200cc injectors pte, buscher
exhaust, and that's about it
exhaust
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Old Aug 27, 2012 | 06:46 PM
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Based on your description of the problem I would recommend taking it to a reputable shop. That's my honest opinion bud..not trying be an ***.
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Old Aug 27, 2012 | 06:58 PM
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made sure you got no air bubbles in the coolant system?
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Old Aug 27, 2012 | 07:07 PM
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Originally Posted by k_sheanh91
made sure you got no air bubbles in the coolant system?
^ I second this...you should try and take ur time to get the air bubbles out
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Old Aug 27, 2012 | 07:45 PM
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Instead of making completely random answers to what is wrong, the car should have a leakdown test done to pinpoint the problem.
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Old Aug 28, 2012 | 12:13 AM
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Originally Posted by flymx771
Instead of making completely random answers to what is wrong, the car should have a leakdown test done to pinpoint the problem.
I just thought that maybe someone Has gone through this before..and I will be doing a leak down test soon

Also could an old thermo stat cause this?
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Old Aug 28, 2012 | 12:49 AM
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Yes it could. You can pull it out, throw it in boiling water and see if it pops open. Also check it for cracks. If its bad, get an OEM one from the stealership.
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Old Aug 28, 2012 | 01:45 PM
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I just did a air bubble test thing to let the bubbles out..it ended up overflowing..but it idled a little higher than normal which is good..now i'm idling around 700rpms..how can I tell/smell coolant from the motor?I know if you see white smoke that's a sign...what else?
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Old Aug 28, 2012 | 03:14 PM
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coolant is a very rich smell. Make sure your fans are kicking on. you can run to autozone and rent a coolant system pressure tester to find any leaks in the system too.
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Old Aug 28, 2012 | 10:40 PM
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I think I have a bad head gasket..haven't checked the oil yet..will do tmrw but my coolant keeps dissipating..no leaks visible..no white smoke..is it possible to just replace the gasket before its too late? Or will I need to get the head resurfaced for the new gasket?
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Old Aug 28, 2012 | 10:51 PM
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Take off the head and take it to a good machine shop. Have the check the head to make sure it's level. Once that is done you can then replace your headgasket.
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Old Aug 28, 2012 | 11:02 PM
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check under the oil cap, wipe it and see if you have any milk under there. Im doing the same thing right now, my ARPs just got here tonight lol.
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Old Aug 28, 2012 | 11:54 PM
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Originally Posted by Evoryder
Take off the head and take it to a good machine shop. Have the check the head to make sure it's level. Once that is done you can then replace your headgasket.
I have a built head sitting around from the old motor..i'm going to get that checked out by the same shop..i just don't want to throw it on because I really don't want anything but stock HP hahaha..but I guess that's NY only option
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Old Aug 28, 2012 | 11:57 PM
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Originally Posted by k_sheanh91
check under the oil cap, wipe it and see if you have any milk under there. Im doing the same thing right now, my ARPs just got here tonight lol.
Yes I will look for that first thing tmrw morning!I haven't seen smoke so hopefully its not to bad yet lol..if you don't mind what happened to yours? And are you taking about the arp L19 head studs?
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Old Aug 29, 2012 | 12:33 AM
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Well i bought the car dirt cheap, it had been sitting in a garage for a year. It was missing a freeze plug in the block and one on the back side of the FP Green turbo, this tiny 14mm freeze plug. So I tore it apart, got a new battery for it, new NGK plugs, drained the e85 and put new gas in, new oil, new coolant, started her up and she ran fine for 20 minutes just idling, didnt overheat or anything then boom, **** ton of white smoke out the exhaust still while idling. So i shut her off and started ripping her apart, again. Im not too worried, i got it dirt cheap, as in i could get a 650hp engine and a 550hp tranny build buy jacks transmission and i would just be coming up to the Blue Book price on it.

And yes I am talking about the L19's, I decided to go with those and an OEM headgasket. Dont want the head to lift after Ive replaced everything, especially with the FP Green on E85. Contemplated throwing in some cams while i was tearing it up but I didnt want to spend the money until im positive its bug free.
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