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Screamer pipe problem...

 
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caldridge7




Joined: 22 Sep 2015
Posts: 205
Location: Spalding, linconshire
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1994 Toyota MR2 MK2 GT - T Bar

PostPosted: Mon Sep 25, 2017 7:06 pm    Post subject: Screamer pipe problem... Reply with quote Reply with quote including images

Hi guys I have a t67 greddy turbo and when at max boost the screamer is no where to be heard... Nothing... Why is this??
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shinny




Joined: 27 Nov 2006
Posts: 2193
Location: Reading, UK
Feedback Score: 29

1994 Toyota MR2 Mk2 Turbo Rev3

PostPosted: Mon Sep 25, 2017 9:18 pm    Post subject: Reply with quote Reply with quote including images

Turn down the boost then... more screamer [Whistle]
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androo007
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Joined: 03 Mar 2014
Posts: 2050

Feedback Score: 9

1994 Toyota MR2 Mk2 Turbo Rev3

PostPosted: Mon Sep 25, 2017 10:38 pm    Post subject: Reply with quote Reply with quote including images

It means the wastegate isn't opening - do you're likely not seeing eno ugh boost to bleed off. What psi are you reading?

Last edited by androo007 on Mon Sep 25, 2017 11:15 pm; edited 1 time in total
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simpson_eh
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Joined: 28 Sep 2009
Posts: 534
Location: south wales
Feedback Score: 24

1993 Toyota MR2 Mk2 Turbo Rev3

PostPosted: Mon Sep 25, 2017 11:02 pm    Post subject: Reply with quote Reply with quote including images

Exhaust to loud ? Lol
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caldridge7




Joined: 22 Sep 2015
Posts: 205
Location: Spalding, linconshire
Feedback Score: 0

1994 Toyota MR2 MK2 GT - T Bar

PostPosted: Tue Sep 26, 2017 12:19 pm    Post subject: Reply with quote Reply with quote including images

I get to boost pressure it's about 1.2bar and no when a screamer comes in you can hear it... Mine you cannot... Also does anyone know with hks 272 cams what the kpa should be on idle as mine is 60 kpa on idle but when moving and revving it's absolutely fine... Unsure if there is a bigger problem or its simply the cams....
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simpson_eh
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Joined: 28 Sep 2009
Posts: 534
Location: south wales
Feedback Score: 24

1993 Toyota MR2 Mk2 Turbo Rev3

PostPosted: Tue Sep 26, 2017 12:46 pm    Post subject: Reply with quote Reply with quote including images

ive had mine jam open so potentialy jammed closed ?? do you get boost spike ?? with it not bleeding off
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jimGTS
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Joined: 14 Dec 2004
Posts: 13946
Location: North Kent
Feedback Score: 35

1997 Toyota MR2 Mk2 Turbo Rev4

PostPosted: Tue Sep 26, 2017 1:03 pm    Post subject: Reply with quote Reply with quote including images

mad question, this external wastegate, it is vented to atmos, and not rerouted into the exhaust right?

i would suggest looking at the vac hoses on the wastegate and checking they are plumbed in correctly....
also worth pumping in some air to one of the EW ports to hear it open and close (engine off obviously).


here my tial just for reference

https://www.youtube.com/watch?v=mUQYhcWMkqc
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