SoobyDoobyDoo Posted February 8 Share Posted February 8 Yeesh…man there’s little clearance there! +1 on the coating. With the headers as hot as they get they’ll heat up and cook that oil quick…. 1 Link to comment Share on other sites More sharing options...
ChicagoSam Posted February 9 Author Share Posted February 9 (edited) The pics do make the header look tight against the pan. There's a 'decent' space-but as suggested they'll get ceramic coated next week. Anyone have a source for a twin scroll up-pipe gasket? Engine is assembled. The officially tally at this stage is: -Built STI Ra Manley piston/Pro-H rod short block -New OEM Subaru 11mm oil pump -OEM Subaru full gaskets/seals -ARP headstuds -NGK 1 step colder sparkplugs -OEM Subaru oil cooler -New OEM exhaust valves -Machine deck/heads (S402) Always nice to see the ebb and flow of cars in the shop. I thought the two white GTs were nice then the red one showed up. Someones having some fun this weekend after a good tune. Edited February 9 by ChicagoSam 6 Link to comment Share on other sites More sharing options...
WRX USA Posted February 9 Share Posted February 9 (edited) These gaskets come with an exhaust: https://www.japanparts.com/parts/detail/?id=20178 Edited February 9 by WRX USA 1 Link to comment Share on other sites More sharing options...
dscoobydoo Posted February 11 Share Posted February 11 That header is close! my vf36 set- up uses the jdm ver-8 intercooler. its about an inch deeper than the corresponding US one of the same year. 1 Link to comment Share on other sites More sharing options...
ChicagoSam Posted February 11 Author Share Posted February 11 @dscoobydooi do like that intercooler-proper oem. what kind of headers are your running? thanks in advance Link to comment Share on other sites More sharing options...
SoobyDoobyDoo Posted February 14 Share Posted February 14 Those ship pics. Link to comment Share on other sites More sharing options...
dscoobydoo Posted February 14 Share Posted February 14 (edited) Running the factory twin scroll header and uppipe. Did a custom downpipe with full 3 inch pipe out to muffler. Edited February 14 by dscoobydoo 1 Link to comment Share on other sites More sharing options...
ChicagoSam Posted February 16 Author Share Posted February 16 (edited) @dscoobydoo thanks for the info. I read that retaining the OEM twin scroll header/uppipe doesn't completely transform the exhaust tone to a smoother pitch (keeps some rumble). Dropping off the headers for ceramic coating. The engine builder doesn't wrap headers anymore. His reasoning is a small spot of oil can( and has) leak onto the hot header wrap and ignite causing a fire. May as well powder coat some other engine bits that will be visible in front around the alternator. I'll go with an aluminum finish to try and match the block( ordered a new OEM alternator as well-) Edited February 16 by ChicagoSam 3 Link to comment Share on other sites More sharing options...
dscoobydoo Posted February 16 Share Posted February 16 It sounds more like a Porsche now. We have an 01 coupe full 06 swap that sounds way more Subaru than our 05 with twin scroll 2 Link to comment Share on other sites More sharing options...
ChicagoSam Posted February 23 Author Share Posted February 23 So not all twin scroll up pipe to turbo flanges are created equal. Tomei's Expreme up pipe flange is little off. AVO has an up pipe that looks like it would match the turbo, but for headers ,Tomei has a better track record. Stock up-pipe will have todo for now until I find a second hand AVO one. ( saw too many dyno numbers to stay stock for manifolds. I'm trying to be as kind as possible for the vf51's potential) I'd love to keep the chrome shine, but ceramic will be the way. 1 Link to comment Share on other sites More sharing options...
dscoobydoo Posted February 23 Share Posted February 23 Thats the issue with any welded product Link to comment Share on other sites More sharing options...
s402legacy Posted February 24 Share Posted February 24 Wow!! What an impressive build you’re undertaking mate!! I own s402 and you’ve given me even more appreciation for it! I’m a little jealous of that hks dump pipe happy to answer little detail questions if you need along the way mate keep up the good work! 5 1 Link to comment Share on other sites More sharing options...
ChicagoSam Posted February 24 Author Share Posted February 24 (edited) @s402legacy gorgeous car. As you said (FB) the factory headers are part of the s402's unique character. I had the Tomei manifold before the vf51 turbo and discovered the up-pipe doesn't match the turbo's flange.( Tomei part # TOMTB6010-SB01A item description says "For Twin-Scroll JDM vehicles only. Not sure why it doesn't fit the s402?) As free flowing as the Tomei's are I'm not liking the larger Tomei header downsizing into the stock up-pipe. (If only it was the other way around.. and the turbo sits much higher with the Tomei/OEM mismatched combo). I'll stay the course and run the factory given manifold-but may add some welds to the back of the oem pipe's flange like the Tomei has. It's a big help to have an S402 owner join in- appreciate it! Edited February 24 by ChicagoSam Link to comment Share on other sites More sharing options...
ChicagoSam Posted February 24 Author Share Posted February 24 Some of the original pieces with corrosion will be cleaned up/coated to look in line with the new block, but some parts, like the timing belt tensioner, are pretty cheap new( $40). New water lines ands most importantly, new clamps. 3 Link to comment Share on other sites More sharing options...
ChicagoSam Posted March 1 Author Share Posted March 1 (edited) Ceramic Coating (CERAKOTE) drying on the oem headers( Subaru describes the s402 unique headers as: "Equal length/burst exhaust system" . (Found a gasket as well for the up-pipe. part# 44011AG020 ) I Should be all set with the manifolds for now. ( most of the engine bay is black, so I went with little color. It'll darken some after a season or two) Edited March 1 by ChicagoSam 5 Link to comment Share on other sites More sharing options...
ChicagoSam Posted March 1 Author Share Posted March 1 Coming together with OEM: Water pump/thermostat/Oil cooler lines/clamps/AVCS oil pipe/water pump lines, hoses,clamps/Cam gears(exhaust)/Center timing cover/timing tensioner bracket/Billet TGV's/ gaskets for coolant cross pipe, tensioner bracket, AVCS Can gear O-rings, Exhaust manifold, Uppipe, TGV upper and lower, and timing cover/ STI intake manifold. Fuel: ID1050 Injectors/Injector plug and play harness adapters, Billet fuel rails/Aeromotive fuel pressure regulator/new fuel pressure sensor and harness and a braided fuel line kit( they look very tidy). 4 Link to comment Share on other sites More sharing options...
DoctorDaveLGT Posted March 2 Share Posted March 2 If you don't have it already, do yourself a favor and get a Fluidampr crank pulley. You won't regret it. 3 1 Link to comment Share on other sites More sharing options...
WRX USA Posted March 2 Share Posted March 2 1 minute ago, DoctorDaveLGT said: If you don't have it already, do yourself a favor and get a Fluidampr crank pulley. You won't regret it. I second that. 1 1 Link to comment Share on other sites More sharing options...
Infosecdad Posted March 2 Share Posted March 2 Haha, I was about to say the same thing... 1 Link to comment Share on other sites More sharing options...
ChicagoSam Posted March 2 Author Share Posted March 2 (edited) I took off my lightweight Perrin pulley years ago-but this is different. thanks for the eyes on- really appreciate it. ( most first impression reviews say the idle is a lot smoother after install-sounds good to me) Edited March 2 by ChicagoSam 1 Link to comment Share on other sites More sharing options...
ChicagoSam Posted March 3 Author Share Posted March 3 (edited) All votes are in..landslide victory. I asked if anyone on FB's ,'Modified Legacys' had any opinion/experience with the Fluidampr pulley on their EJs. Sounds like the pulley is coming aboard. ( again- thanks for chiming in above ) Edited March 4 by ChicagoSam 2 Link to comment Share on other sites More sharing options...
Fenrir1 Posted March 3 Share Posted March 3 On 8/25/2023 at 9:25 PM, ChicagoSam said: Lucky me- some talented friends worked their magic. Bumper is “safely” back together. Exhaust sticks out for now but not bad. think ur buddies can make another one and sell/ship it to me? Link to comment Share on other sites More sharing options...
ChicagoSam Posted March 3 Author Share Posted March 3 4 hours ago, Fenrir1 said: think ur buddies can make another one and sell/ship it to me? I’ll ask them- send you a PM when I get any info. thanks 1 Link to comment Share on other sites More sharing options...
Fenrir1 Posted March 3 Share Posted March 3 1 hour ago, ChicagoSam said: I’ll ask them- send you a PM when I get any info. thanks Fasho. Thanks man Link to comment Share on other sites More sharing options...
ChicagoSam Posted March 7 Author Share Posted March 7 So since the original alternator in the car has over 165k miles on it, I'll use the s402's-it has far less miles on it but still has a lot of corrosion. I wanted to remove the front and had to drill out the 4 screws. One didn't come very easily but it's off for powder coating. Fuel rails are on as well. Link to comment Share on other sites More sharing options...
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