high pitched Blow off

[wintonyk]

I am driving a 92 jdm mr2 thats pretty much all stock other then a blitz BOV. I went away for the weekend so my car sat from thursday morning until today tuesday morning. When driving it today though I noticed the turbo spooling is at a much higher pitch... one that i actually find kind of annoying. I was wondering if anyone had any suggestions as to why the pitch would change and how I might be able to get it back to the way it was before.

[dj_rice]

Re-adjust the screw on the top of the BOV maybe?

[Dooms_Bane]

maybe your intake filter is dirty. less space for the air to get into the turbo... means it has to really squeeze through the small gaps? and it's creating a higher pitch noise.. (no clue i'm just taking a wild guess don't flame me!)

[s3v3n]

a high pitched squeal while spooling up might be the comp blades rubbing against the cover. check turbo for oil and shaft play. could also be air escaping from a boost leak somewhere.

[Hollywood]

Turbo may be be going.... Least a replacement turbo is cheap since ther are a million used stock ones.

[RZRSHARP_SVX]

I went a checked it out. and i think it may be the turbo. I did not notice any boost leaks. you only notice the sounds during boost

[stevo 27]

if the turbo is gonzo buy a usdm ct26 steel blades are better they last longer and
you can run higher boost on them

or you can send your ct26 to majestic turbo in the states
get the 50trim upgrade for about 500 bucks to your door maybe a lil more and youll notice a HUGE!!!! diffrence in power
its night and day. Or a good used stock ct26 will cost you anywere from 150-200 bucks

vupgrade companyv
815 Jefferson
Waco, TX 76701

Toll Free: 1 (800) 231-5566
[email protected]

NOTES:

Typical CT26 upgrade $450 w/ exchange.


www.majesticturbo.com








but if it only makes the noise during boost most likly it is not the turbo when mine turbo went it was more of a howling noise other than a screach the bov is probley not fully opening clean it out with some carb clean see what happens before you strart buying shit :)


goodluck

[wintonyk]

Since first hearing this noise I didn't ever step on it. But today I decided to punch it and I realize there is likely a boost leak somewhere. I haven't been able to hit full boost.

Where are the common areas to check for a boost leak. All the hoses look intact.

[stevo 27]

check if your bov is loose on the flange or any bolts are missing
that seems to be the most common place from what ive seen

and also like i said i doubt your turbo is pouched but
you wont get full boost if your turbos severly worn


i still recomend the 50 trim upgrade :burnout:
regardless if it is screwed or not :D

[hellraiser456]

hmm...check the rubber hoses as well...particularly the one from the IC to the hard pipe that leads to the TB...also check the TB coupling.

if all else fails build a boost leak tester. they are easy to make and work well.

[stevo 27]

i must say he has one very mint 2 its gorgous and rides like a dream:thumbsup:

[wintonyk]

huge thanks to stevo... he guessed it before he saw the car and figured it out the second he heard it. He knows his cars.

It was a missing bolt on the BOV. I can't believe i missed that so many times

[stevo 27]

no problemo man like i said props for having such a clean mint mr2 :thumbsup:

[ca18det240sx]

GJ stevo. Now you have another conquest....feeding a beating to your neighbors mustang :D

[stevo 27]

fuckin rights cough cough cough a gt35r will be in my posseion next thursday he he he

thats if rcts doesnt give me some BAD BAD news tomorow

pray for my block no cracks no cracks :(

its probbley something small and stupid i missed
like the TPS adjustment or something *crossing fingers*


EDIT: oh cough cough and a N.O.S cheater nitrous kit 50 shot :burnout: :eek:

got a few barrels of motor sport 109 :)

that little 347 stroker will meet its doom to my 2.0L:guns:

[ca18det240sx]

thats awesome man, cant wait to see it. My ca18 should be putting out some serious numbers as soon as i get my damn front mount.

[stevo 27]

what sized front mount are you getting and damn i forgot i gotta get my ICshit 32x14x4 big enough haha
im wondering how bad it would be to run bigger injectors on the stock ecu??
it just sucks i gotta do internals,Hg,head studs,cams, intake mani injectors/fuel rail/pump/regulator,f con pro, blah blah blah 10 grand later
600awhp:dunno:

350 should kill the stang haha