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Old 11-05-2019, 09:53   #16
redrocket89
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i have another question actually, there are recirc valves that are being sold on indigo gt with no rating of psi on them, i have paperwork to show my car was mapped at indigo gt at 420/400 but i dont know what boost psi the turbo is running it is not documented....and then there are others that are adjustable but how is one supposed to adjust one without knowing what the max boost applicable is
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Old 11-05-2019, 11:10   #17
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Id take the recirc off, and blow through the ports, make sure they are sealing, also check the small pipe off it, make sure there are no leaks as that balances pressures, Give it a bit of oil and work it manually

Off topic, do you have upgraded clutches and other parts, as your power figures seem high for a basic sst remap

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Old 11-05-2019, 11:52   #18
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Id take the recirc off, and blow through the ports, make sure they are sealing, also check the small pipe off it, make sure there are no leaks as that balances pressures, Give it a bit of oil and work it manually

Off topic, do you have upgraded clutches and other parts, as your power figures seem high for a basic sst remap

Stu
cool thanks for the advice ill check it out....as for the sst remap, it has all stage 4 parts plus conrods done, sst is standard, but that is on my list to upgrade in the future, there are quite a few ssts around 400/400 mark with no problems
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Old 05-06-2019, 06:08   #19
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The recirc felt fine and I bought an aftermarket recirc from forge but still have this metallic rattle. Now I can hear the bov more distinctly I can tell that the noise isn't coming from there, it sounds like it is coming from directly in front of me, which is virtually where the hot side of the turbo sits in the engine bay. Couldnt be the waste gate making this noise could it? Or is it worth just buying a new turbo and seeing if that sorts it?

The new bov seems to hold boost better, feels more aggressive especially when changing through the gears so in the "powerband" of the turbo
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Old 05-06-2019, 09:50   #20
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Its definitely worth checking the wastegate, make sure the actuator is pulling it tight shut

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Old 05-06-2019, 15:04   #21
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How do I go about checking this?is it possible to do while stationary
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Old 05-06-2019, 19:06   #22
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Yep, stationary, engine off and cold. You need to get to the turbo and the actuator connected too it, make sure the arm of the actuator is still connected to the wastegate, and that it is pulling it tight shut. If the actuator arm has come off the wastegate, or its not pulling tight on the wastegate, they can rattle. A simple thing you can check if you think the noise is that area

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Old 05-06-2019, 21:29   #23
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OK so I took the heatshield off the exhaust manifold, and found the actuater which is solid, no problems there, can pull it with some strength but feels like there can't be a problem here, so rules that out.

I then got my endoscope out and started looking round everywhere and noticed the two bottom bolts that attach from the exhaust, one was loose and the other had sheered its head off!

I have tightened the one back up but the other has had it.
I decided I would go for a drive without heatshield on with that bolt tightened up to see if it made a difference, the rattle that appears when hammering your foot down thats in sync with the turbo seems to go when hot but there is another metallic vibrating sound which I thought had to be the heatshield as I could never locate all the bolt holes again as it got mishapen upon removing it, was still there, which is quite worrying.

So not bov, doesn't appear to be wastegate, one bolt loose and one stripped head, heatshield removed and still the same sounds.... I have got some dash cam footage which I'll review and see if that has caught any of the noise

Oh and to add it can't be sealing as I can smell exhaust fumes if I stick my nose near the exhaust mani.

Why do I smell big bills coming my way

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Old 05-06-2019, 22:27   #24
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I would get all the bolts that are missing replaced. The exhaust could be touching something as it flexes under load.
I would also look for cracks in the manifold. The X manifold is prone to cracking. I've heard a few folk say you can smell it.
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Old 06-06-2019, 12:00   #25
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I would get all the bolts that are missing replaced. The exhaust could be touching something as it flexes under load.
I would also look for cracks in the manifold. The X manifold is prone to cracking. I've heard a few folk say you can smell it.
Ive watched some videos on youtube on how to get snapped bolts out, i just know its gonna be ******* lol. ill try get it removed tomorrow and replace the bolts.

This is taking a lot longer than i thought to diagnose, but i dont wanna pay someone to look for me when i can do it myself for free either lol and i dont plan on getting scammed like the other similar thread thats on here at the moment where he got told to replace the turbo and manifold costing £1000's and it didnt even resolve the problem
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Old 06-06-2019, 13:01   #26
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Unhappy

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Here's a pic of my manifold, I have just noticed looking at the pic it has cracked..... God damn lol

And you can see the bolt that has sheared off to the right.

So drill out bolt and I guess replace the manifold....? Can I cry now
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Old 06-06-2019, 14:05   #27
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Bingo!!
New manifold time for you. If you don't want to spend on a tubular manifold I believe a company does a forged manifold. Can't remember the manufacturer at present.
I've got a C-Tec manifold on my Evo X. It's been on for years. I would highly recommend if you are looking for a good tubular.
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Old 06-06-2019, 20:57   #28
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Bingo!!
New manifold time for you. If you don't want to spend on a tubular manifold I believe a company does a forged manifold. Can't remember the manufacturer at present.
I've got a C-Tec manifold on my Evo X. It's been on for years. I would highly recommend if you are looking for a good tubular.
Did yours make any bizarre noises before you noticed and swapped out the manifold?
What heatshield are you using?
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Old 06-06-2019, 20:59   #29
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Did yours make any bizarre noises before you noticed and swapped out the manifold?
What heatshield are you using?
My standard manifold never broke, I swapped to a tubular manifold years back when I got the engine built and bigger turbo fitted.
I believe I'm using a Ross Sport heat shield.
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Old 07-06-2019, 00:19   #30
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Out of interest what is your built evo 10 putting out these days?
Do you have a picture of your engine bay?
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