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DIY Turbo Discussion greddy on a 1.8? homebrew kit?

I AM BOOSTED...but I have vibration ;)

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Old Sep 23, 2013 | 08:43 PM
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Default I AM BOOSTED...but I have vibration ;)

So I started my car today and got tuned and drove! However I have intense vibration when boost kicks in. If I was a girl I wouldn't mind it but it's rather obnoxious any suggestions as to what this is? Or is it a normal thing
Old Sep 23, 2013 | 08:44 PM
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No that is not normal at all.
Old Sep 23, 2013 | 08:45 PM
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Yeah I thought so as well, but I have no idea where to start figuring out what it is
Old Sep 23, 2013 | 08:49 PM
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Describe the vibration.
Old Sep 23, 2013 | 08:51 PM
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The car runs smooth when not in boost when boost comes on the car vibrates I can still see out of the mirrors so its not horrendous but it is not something you can ignore
Old Sep 23, 2013 | 08:53 PM
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Check for shaft play in the turbo.
Old Sep 23, 2013 | 08:55 PM
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I will, however last time I checked it which was a few weeks ago before mounting the turbo there was none
Old Sep 23, 2013 | 09:47 PM
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Can you hear anything unusual or just feel the vibration?
Old Sep 23, 2013 | 10:04 PM
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Do you have a wide band hooked up?
Old Sep 23, 2013 | 10:15 PM
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Are your wheels spinning cause of all the turbo powa
Old Sep 23, 2013 | 10:42 PM
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I don't hear anything unusual, I do have a wideband, and yes the wheels are spinning. Previous to the turbo install we had to change the water pump and you guys know all the work req. for that. So maybe something involving water pump replacement?
Old Sep 23, 2013 | 11:01 PM
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there's nothing special inolved in water pump replacement.

you probably screwed something up
Old Sep 23, 2013 | 11:29 PM
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Originally Posted by 18psi

you probably screwed something up
but it just doesnt make sense lol.
Old Sep 23, 2013 | 11:32 PM
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Mis-fire from blow out?
Old Sep 23, 2013 | 11:34 PM
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Exhaust vibrating against the subframe/tranny?
Old Sep 24, 2013 | 12:02 AM
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Originally Posted by Miater
Mis-fire from blow out?
My guess would be this or the clutch giving up the ghost
Old Sep 24, 2013 | 12:28 AM
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without a log and video we'll be here all day
Old Sep 24, 2013 | 12:29 AM
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Driveline out of balance? Motor mounts? How much power are you making? Maybe when you're under boost your chassis is flexing causing something to become Mis-aligned and put of balance. I've driven a couple high hp miatas at the shop that under load everything kinda flexes.
Old Sep 24, 2013 | 12:44 AM
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We need logs of your driveshaft NAO!
Old Sep 24, 2013 | 01:04 AM
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Originally Posted by FRT_Fun
We need logs of your driveshaft NAO!
fixt



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