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Wastegate flapper

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
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1997 - 2000 V70, V70 AWD
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Jhagins1
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Wastegate flapper

Post by Jhagins1 »

Guys I am rebuilding the head on my 850r and have the turbo off and decided to do it while off. The wastegate flapper appears to be able to move up and down a lot. If not I. The right position it allows a gap at the top or bottom of the port. Is this normal.
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Re: Wastegate flapper

Post by greg850r »

I don't think it's normal but I can pull one off the shelf tomorrow and check. Meantime, a pic would be helpful if you have the parts on the bench.
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Re: Wastegate flapper

Post by bmdubya1198 »

It's normal for the flapper itself to move around a bit when it's open, but when the wastegate is closed (held shut by the actuator) it should seal tight.
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Re: Wastegate flapper

Post by Jhagins1 »

I will take some pics. I jb welded it. The door fits in a bushing and the bushing moves up and down allowing it to leave a gap. I got the bushing to stop moving so now just the door moves. No more up and down. Just open and close.
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Re: Wastegate flapper

Post by bmdubya1198 »

Jhagins1 wrote: Wed Sep 11, 2019 9:17 am I will take some pics. I jb welded it. The door fits in a bushing and the bushing moves up and down allowing it to leave a gap. I got the bushing to stop moving so now just the door moves. No more up and down. Just open and close.
Uhhh... sounds to me like you're setting yourself up for boost issues, whether that's over- or under-boosting depends on how you JB welded it.

Pics will be necessary here.
00 V70R Venetian Red/Charcoal M56 Swapped 200k
03 S60 2.4T Silver/Black 118k
07 XC90 V8 AWD Sport Titanium Grey/Black 174k
92 245 Base White/Beige 249k
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99 BMW 528i
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00 S70 GLT Mystic Silver/Taupe 253k
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93 944 Base Beige/Beige 221k
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Re: Wastegate flapper

Post by Jhagins1 »

How do I add a picture
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bmdubya1198
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Re: Wastegate flapper

Post by bmdubya1198 »

Go into "full editor & previrw" or click "post reply" at the top of the thread, then just below the text box, you can select "attachments" and upload it from there.
Otherwise, you can post from an image hosting site like Imgur using the BB code link option.
00 V70R Venetian Red/Charcoal M56 Swapped 200k
03 S60 2.4T Silver/Black 118k
07 XC90 V8 AWD Sport Titanium Grey/Black 174k
92 245 Base White/Beige 249k
98 V70 GLT Black/Beige 205k
99 BMW 528i
84 BMW 318i
01 Mountaineer 5.0
Sold-
00 S70 GLT Mystic Silver/Taupe 253k
91 944 Turbo Dark Green/Beige 175k
93 944 Base Beige/Beige 221k
98 S90- Silver/Gray 207k
95 850 GLT Tropic Green... crushed
01 S60 2.4T Black/Black 230k
88 744 Turbo M46 Beige Metallic/Beige 188k
Jhagins1
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Re: Wastegate flapper

Post by Jhagins1 »

The part that is jb welded is the bushing that the flapper shaft sits in. It is the part that is moving up and down.
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E74D01F0-554E-49CB-A6D3-7197358F135D.jpeg
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bmdubya1198
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Re: Wastegate flapper

Post by bmdubya1198 »

Ah, I see. I don't think I've seen that repaired that way before... best bet is to get a new turbine housing.
00 V70R Venetian Red/Charcoal M56 Swapped 200k
03 S60 2.4T Silver/Black 118k
07 XC90 V8 AWD Sport Titanium Grey/Black 174k
92 245 Base White/Beige 249k
98 V70 GLT Black/Beige 205k
99 BMW 528i
84 BMW 318i
01 Mountaineer 5.0
Sold-
00 S70 GLT Mystic Silver/Taupe 253k
91 944 Turbo Dark Green/Beige 175k
93 944 Base Beige/Beige 221k
98 S90- Silver/Gray 207k
95 850 GLT Tropic Green... crushed
01 S60 2.4T Black/Black 230k
88 744 Turbo M46 Beige Metallic/Beige 188k
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Re: Wastegate flapper

Post by ecbsykes »

That's odd. I'd be concerned about that JB Weld inside the housing coming loose and breaking apart after so many heat cycles. Debris like that would not be great to hit spinning turbines and go down the intake into engine.
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