ToolsnTrack
Posted a lot
Homebrew Raconteur
Posts: 4,117
Club RR Member Number: 134
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So a week of shakedown and a few things have came to light. First up, the actuator was way out of adjustment. I could shoogle it and hear the penny-valve rattling, so it had zero preload on it. Stripped it off, greased the threads and dialed in a bit more and what a difference! Boosts really clean now around 3k up rather than 4. Still only making 0.5 Bar though... With the weekend came a lot of unrelated car repairs, including a wheel bearing on Mrs Overdrives Suzuki Alto (true trauma, in the end the fragments were swept off the floor) but come Sunday it was time for some proper modifido!! I had made some measurements and ammased a few bits and bobs for this through the week. The target was this: The stock induction system. Massive resonator, mashed filter that seems to sandwich between the bonnet and ABS unit, nasty ribbed rubbers... all have to go. This was my plan... Some reducers to take the AFM to the Turbo OD, a length of stainless tubing, and some... WELDING! After a few hours I was left with something like this. I still need to source clamps for the hoses, which after some costly mistakes with the MR2 I only ever measure up once the silicone is fitted, and there is a 22mm port to be added for some hefty block breather or something. Other than that thhe stainless will be heat-wrapped to hide it and its done! I'm also slowly replacing all the heat-hardened old rubber vac lines..
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ToolsnTrack
Posted a lot
Homebrew Raconteur
Posts: 4,117
Club RR Member Number: 134
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Update! Still amassing parts for the cold air intake on the Scoob. Couple of bits still to go but it looks like this now: Coming on nicely. So since it should now be running corectly I spent the weekend on the road, clocking up about 350 miles of good reliable (if unusually thirsty) driving. This culminated in a visit to Crail dragstrip on Sunday to lay down some benchmark times. Here they are: Clear improvements can be made here. I think running more than 0.5 bar may be one of them.
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ToolsnTrack
Posted a lot
Homebrew Raconteur
Posts: 4,117
Club RR Member Number: 134
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Another stealth purchase. Found a JUN splitter for a song, so snapped it up a few weeks ago. Now just getting around to painting it. My side trims and spats are black, so this will get the same treatment rather than a colour match. On goes the primer...
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ToolsnTrack
Posted a lot
Homebrew Raconteur
Posts: 4,117
Club RR Member Number: 134
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More progress. Finally got my shipment of Syntrax 75-90 for the gearbox. Really easy to swap the box oil on a Scoob... Just fill it up through the dipstick hole! In flashier news, the final coat of paint went on the splitter... That gets fitted tonight!
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ToolsnTrack
Posted a lot
Homebrew Raconteur
Posts: 4,117
Club RR Member Number: 134
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Splitter finished! On she goes... Mucho improvement!
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Must admit, love reading this but it's put me off a cheap Impreza as a daily smoker!
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stevietuck
Posted a lot
Never argue with idiots,they drag you down to their level then beat you with their expertise!
Posts: 1,348
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Looks much better mate
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ToolsnTrack
Posted a lot
Homebrew Raconteur
Posts: 4,117
Club RR Member Number: 134
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Must admit, love reading this but it's put me off a cheap Impreza as a daily smoker! They're not that bad if you are sensible and handy with a spanner...
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Splitter is win-inducing. The whole thing looks awesome actually. Looked really mean in my rear view mirror!
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skozra
Part of things
Posts: 175
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Splitter looks great, really like that addition. Good work man ! Must admit, love reading this but it's put me off a cheap Impreza as a daily smoker! An old (cheap) Scooby makes a great daily driver, one of the best decisions i’ve ever made was to get one for that purpose (right after seeing this thread). ok i’ve had to do a few things to it but it’s been well worth it. I wouldn't want to drive anything else now lol
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93 Volvo 240 Torslanda Estate, 01 Subaru Impreza WRX Saloon & 86 Ford Capri 2.8i (with Weber 38 carb fitted)
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Looks tidy Them fins on the intercooler want straightening and looks like it wants cleaning... Standard Imprezas run 14psi ( 1 bar ) of boost so your running actuator pressure... I'd start by checking the boost solenoid is working correctly...
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ToolsnTrack
Posted a lot
Homebrew Raconteur
Posts: 4,117
Club RR Member Number: 134
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Looks tidy Them fins on the intercooler want straightening and looks like it wants cleaning... Standard Imprezas run 14psi ( 1 bar ) of boost so your running actuator pressure... I'd start by checking the boost solenoid is working correctly... Ooooorrrrr.... Throw an EBC and bigger intercooler on.
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ToolsnTrack
Posted a lot
Homebrew Raconteur
Posts: 4,117
Club RR Member Number: 134
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OK, busy weekend. First up, the terrrorist had some further donations to make now its an official scrapper. This was Saturdays gameplan, and within 45 minutes the engine was out: This will be dry stored for "backup". Never know what lurks around the next bend! The rest of the Terrorist's drivetrain also came out for a sale, which looks a bit like this: Pretty neat 4WD package to be honest! A few more things to come out that shell then it will take the long walk and my garage can be a lot more functional!! So Sunday, the day of rest... Or in my book the day of "have a tidy then get creative", saw the cold air intake finished. I had one final take-off to attach to the body, a hefty 22mm pipe. Space was becoming tight so i angle mounted it. This would also reduce pipe kinks... Not my neatest work but there are no holes and its solid. Anyway, whilst under the bonnet fitting it all up, I had a look into the "missing boost", namely only getting 0.5 bar or what I came to discover was just actuator pressure. I took all the boost hoses off and replaced them for silicones, fearing a split may be the cause of problematic boost... This led me to discover the "restrictor pill" - basically a brass hose blocker with a precision drilled hole through the middle that helps to meter flow through from the turbine take off to the boost solenoid (Subarus last minute boost controller) - except it wasn't there. It was in the metered air line, regulating non pressurised fresh air to the boost solenoid. Handy. It was swiftly plumbed in to where it should have been. So, pipework on for a trial fit... i.imgur.com/dXovn6y.jpg...then all trimmed and nipped up... Result. Pulls like a train now, amazing the difference 0.3 bar makes. Restrictor pill was definitely the cause of the low boost. Still, even 0.8Bar is.... normal. There is more to be had. Groundwork first though, that ganky filter needs to go, and I really need to make it stop more than I need to make it go faster...
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ToolsnTrack
Posted a lot
Homebrew Raconteur
Posts: 4,117
Club RR Member Number: 134
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God Damnit Green Goblin, I thought we had an agreement!!! Decided to hit the skunkworks last night and attack some "niggles" I have found... flickering dash lights, squeaky window, squeaking aux belt, and a blow from the exhaust. Pulled it in and did the aux belt first... Simple! Next up, the exhaust blow. Fuelled with belt success, and knowing I could take the opportunity to make an improvement, I started on the known cause. Basically, there are 2 brackets that hold the turbo to the engine, and I had forgot one when attaching the new TD05. Suspecting that this bracket ommission may be causing the turbo to flex slightly and therefor possibly push the up-pipe flange to the point of not sealing, I knew it had to go back on. Stripped it all down and got it ready to attach. After this, I jacked the car up to detach the up-pipe from the exhaust manifold. This is the point where my night got longer... Clunk. Ah yes, that would be the bottom of my OSF spring. Great. On the silver lining, at least I have adgustable shocks in the waiting to go on. Will be a perfect excuse to get some springs for it too, but it would need to wait... OK, so the exhaust.. Hmm. Not quite what I had suspected. Basically, the Impreza has a fairly compex "Hot side" (or pre turbo) exhaust system. There are 2 headers for each back of the engine, a link pipe joining them which is flanged, then an up pipe that takes all those merged gases to the turbo. Whilst rooting around underneath I found a section of exposed loom... Odd. That wasnt there before. Some further digging exposed why the link pipe is missing on the above picture. Yea, another failed gasket. Stripped the link pipe off (and by stripped I mean angle ground every bleedin bolt off) and inspected... Yea, that's seen better days, and has been passing a neat little jet of red hot exhaust gas directly into my engine loom. Luckily I caught that before it took any real sheathing off... Finally though, for the first time in this project, I have been able to root around the garage and find a solution on the spot!! BAAAM! Old bodged and crumbling link pipe above, replacement heat-wrapped section below. In it went and we were done. Re-assembled it all and test fired. No leaks, and ecerything working as it should. Substantial detour to the original plan but at least I got a wee upgrade thrown in, plus I feel a lot better about the condition of the turbo pipework. Didnt get to solve the other issues though, and I can now add suspension to the top of the list....
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Mar 20, 2015 10:23:52 GMT
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Nice work!
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Sinky
Posted a lot
Run Baby Run......Please!
Posts: 1,395
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Mar 20, 2015 10:29:19 GMT
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looking good buddy
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2001 Volvo XC70 wagon
2003 Piaggio X9 Evo
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ToolsnTrack
Posted a lot
Homebrew Raconteur
Posts: 4,117
Club RR Member Number: 134
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OK then, time to finally sort that horrid ripped foam filter! On with a new unit! While it was off, I had a better poke around the cam cover. I found the rear lower bolt was caked in black gunk. Suspecting this could be here my oil leak was, I pulled a replacement from a set of spare heads I have and swapped it over. Problem is that the oil drip is soaking my heatwrap so I won't know if this is a cure for a while yet (burns off before a drip happens) but signs so far are positive...
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ToolsnTrack
Posted a lot
Homebrew Raconteur
Posts: 4,117
Club RR Member Number: 134
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My gym motivation was non-existent last night, so I hit the garage with big plans. Following the discovery of a coil dropping from my front spring the other night, I decided to pull the front struts from the white Impreza with a view to at least having the front end of the Green Goblin solid again. That was an easy task, and I laid out the parts to be fitted in a marathon blast! Yes, wheels too! Pulled the green one in and made a start on the nearside. Thats when, as usual, it all went wrong. The strut to hub bolts are - for lack of a better word - shagged. the threads beyond the nut are so corroded that the nut just jarred up. They will need chopping off, which isnt a big issue. What is an issue is the discovery that the neaside CV boot is split clean in half. Okay, so this is growing arms and legs again. Best not get the grinder out and fill that open wound with grit until i have a replacement. Not forgetting this thing needs to maintain daily driver duties so killing a CV joint to save a strut seems less than prudent. I took stock and threw the wheels on, then moved onto another task whilst the new bits are on order... I picked up a Version 8 intercooler a while back for a song. On lining it up it looks like the BOV location will foul on my idle control valve, the joy of massive alterations between revisions of the Impreza (you though Toyota were bad for this? Subaru are unreal for swapping designs on a yearly basis!). Blank plates are available but they are expensive and bulky. I got the plasma cutter out and fabricated one with half the thickness. Still a good 4mm or so think so should hold back a bar of boost fine. There are other little mods that are needed to get this on, so I left it for another night and tookt he car a last for fuel and a check of the new wheels. An improvement over gold I think. They actually have little green bands on the lip too, just to break up the black.
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stevietuck
Posted a lot
Never argue with idiots,they drag you down to their level then beat you with their expertise!
Posts: 1,348
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Mar 26, 2015 11:38:44 GMT
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Like the new wheels bud very nice. As for working on suspension, it always goes from just replacing one thing ie spring, when you go to do it you notice a split cv boot then its a ball joint and a track rod end and on and on it goes!! My daily seems to just eat its way through ball joints, I'm sure iv changed every one of them twice in 3 years!
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ToolsnTrack
Posted a lot
Homebrew Raconteur
Posts: 4,117
Club RR Member Number: 134
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Mar 26, 2015 12:05:44 GMT
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I could go through the time to save parts and reduce cost, but a full shaft used is a tenner versus the grief of splitting a cv joint off. Will do the ball joints and tie rods though for new ones.
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