Ben g brads Posted January 17, 2017 Share Posted January 17, 2017 Hi all. Ive got a classic impreza uk version. 1998. I have a blowing noise near the turbo and lost bhp. Its either the down pipe from turbo to manifold has a split (heat shielded) or the gaskets or seals on the turbo.? Back in the day ive restored cars ect. This scoobys the love of my life. I havent got a service manual My question is: are my best taking the engine out as theres little room to get down there ? Many thanks Quote Link to comment Share on other sites More sharing options...
savage bulldogs Posted January 17, 2017 Share Posted January 17, 2017 The turbo and up pipe can be removed with the engine in situ . In a ideal senario if everything just comes undone it's probably about 4 hrs work to remove and refit [emoji41] But if it's not been off before ,you can add another 3 hrs ,6 plasters and a full swear tin [emoji23] . Only use genuine subaru gaskets or they'll be leaking again in no time [emoji30] Have a look on import car parts for turbo /up pipe fitting kit for your version. As you'll need .... Manifold to up pipe gasket . turbo inlet (up pipe to turbo) gasket. turbo outlet gasket . Studs and nuts (as your bound to snap or round off something) . And downpipe outlet conical fire ring gasket . If the heatsheilds look like they've seen better days and fall apart when you start , get some heat wrap and stainless steel ties to recover the up pipe. Rough run through .....Remove the tmic and bung any open pipes ,take note /mark up the vac lines before removing them. Remove the downpipe completely . There's a bracket on the up pipe at attached to the head loosen that off and remove the oil feed from underneath the bracket . Up to you if you want to buy new copper washers for refitting the oil feed banjo but I would to save having to do it all again [emoji6] Here's a pic of the manifold to up pipe and the support bracket . When refitting bolt the turbo ,up pipe and bracket loosely then nip it up tightening the bracket last . 2 Quote Link to comment Share on other sites More sharing options...
Piggysniffer Posted January 17, 2017 Share Posted January 17, 2017 What uppipe is that... Quote Link to comment Share on other sites More sharing options...
savage bulldogs Posted January 17, 2017 Share Posted January 17, 2017 @Piggysniffer it's a haywood and Scott slip jointed up pipe, takes the stress of the manifold and up pipe gaskets . It's now on sandys scoob anyways lol , I'm now running the up pipe that came with the groupe headers . Quote Link to comment Share on other sites More sharing options...
Piggysniffer Posted January 18, 2017 Share Posted January 18, 2017 Cheers mate, this uppipe lark is a pain up ze arris Quote Link to comment Share on other sites More sharing options...
Sandals Posted January 18, 2017 Share Posted January 18, 2017 A quality up pipe it is as well! Just need to keep remidning myself everytime time it's cold it blows a little, always takes me a second to remember! 1 Quote Link to comment Share on other sites More sharing options...
savage bulldogs Posted January 18, 2017 Share Posted January 18, 2017 Either haywood and Scott or a "matched" trick up pipe from Asperformance ftw , both of which are slip jointed [emoji6] Quote Link to comment Share on other sites More sharing options...
Piggysniffer Posted January 18, 2017 Share Posted January 18, 2017 I'm reading that these trick up pipes are not just 2 or 3 bolt flange, but are actually made to the requirements of the turbo/set up you have, everyone being pretty much bespoke to a degree, is this actually true Quote Link to comment Share on other sites More sharing options...
savage bulldogs Posted January 18, 2017 Share Posted January 18, 2017 I'm reading that these trick up pipes are not just 2 or 3 bolt flange, but are actually made to the requirements of the turbo/set up you have, everyone being pretty much bespoke to a degree, is this actually true Yeah from what I've read Harvey smith ( rip ) did loads of tests using old school "bore and flow " methods .to find the best size intake, outlet and bore size to increase flow /spool . So if you did go for the "Harvey trick up pipe " you'd be better of knowing what headers and turbo hotside you'll be using so Alyn @Asperformance can match it up with the right size up pipe [emoji6] Quote Link to comment Share on other sites More sharing options...
Piggysniffer Posted January 18, 2017 Share Posted January 18, 2017 Ok mate thanks, seems the way to go Quote Link to comment Share on other sites More sharing options...
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