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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, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
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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greg850r
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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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bmdubya1198
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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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Jhagins1
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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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bmdubya1198
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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.
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Jhagins1
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Post by Jhagins1 »

How do I add a picture

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bmdubya1198
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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 203k
05 S60R Sapphire Black/Nordkap M66 203k
07 XC90 V8 AWD Sport Titanium Grey/Black 183k
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00 S70 GLT Mystic Silver/Taupe 254k
99 BMW 528i
84 BMW 318i
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03 S60 2.4T
98 V70 GLT
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Jhagins1
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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.
Attachments
E74D01F0-554E-49CB-A6D3-7197358F135D.jpeg
96939CA7-D569-497C-B21D-A3764D627245.jpeg

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bmdubya1198
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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 203k
05 S60R Sapphire Black/Nordkap M66 203k
07 XC90 V8 AWD Sport Titanium Grey/Black 183k
92 245 White/Beige 249k
00 S70 GLT Mystic Silver/Taupe 254k
99 BMW 528i
84 BMW 318i
Sold-
03 S60 2.4T
98 V70 GLT
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93 944
98 S90
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01 S60 2.4T
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FlyingVolvo
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Post by FlyingVolvo »

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.
-Ed

1997 850 T5 - 255,000 miles
2000 V70XC - 311,000 miles
Hilton Tune, 16T Turbo, Mototec 3" downpipe, Blue injectors, IPD Short Ram Filter, Snabb Intake Piping & RIP kit, do88 Intercooler, TME Dual Exhaust, HID Projectors, R Panels, do88 Silicone Hoses

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