1104 replies to this topic

[vicelore]

Oh and shes back on her wheels after 6 months on stands !!! Going to the tuners to have a the FMIC, exhaust, turbo, fuel system, injectors, new engine, etc etc fitted next week ..

Just got the little fiddly bits finished last night..

Finished off the pedel install.. Swapped over the full gas and brake pedal setup, But only swaped the pedal cover on the clutch as the lib one was different to the wrx one..



The interior is going to remain at this stage untill all the electrics have been checked .. So ill be driving like this for a bit..



I also finished up setting up the ball joints on the hubs, steering linkages etc..













Good times ahead.. Vice

[Morgan]

Coming along nicely

[Adam]

Sweet! Looks like the home stretch!

[vicelore]

Yup.. I think the list goes

Bolt in motor
Connect wiring
Make up FMIC bracing/piping
Make up Exhaust
Mount up Turbo/BOV
Mount and connect up fuel pumps/lines
Install new brakes/discs
Have the guys check over every bolt iv touched..

Then start the bitch

Then obvously break in / tune
Sexy subaru time

Im hoping the above will take under a month.

[vicelore]

BTW.. is this the brace that needs to be removed to make room for the down pipe ? I rember reading that B4`s didnt have it..



Thanks

[JRod]

I need more info on what im looking for with these..

Not sure if i need internal or external wastegate ( I know the difference but unsure which way to go, I do want a small BOV noise so im assuming internal .. ) ... A V band clamp or 4 bolt ? Housing size ? Been searching but unsure what works best with subys..

Any info greatly appreciated as its a pretty expensive part.. SO i dont wanna buy the wrong thing.

Thanks Vice.

External wastegate give you greater control of your boost levels. Nothing to do with BOV noise. When you work out what boost your planning on running (15psi/20psi/30psi etc) then you buy the same pressure spring for the wastegate. Theres no point having a 7psi spring if your planning to run 20psi as the wastegate will open when it hits 7psi meaning your turbo will be losing pressure and working harder to hit the targeted psi. If you want to run 20psi, get a spring that is 20psi.

As far as bov noise goes, choose what ever one you want. Plumb back or atmospheric venting. The 2nd one can be defectable depending on whether you can tighten it right up or not. The harder you have it tightened, the harder it is to vent when you get pulled over by the popo.

I've always liked the Turbosmart gear. They do awesome pieces of equipment. Check out their website.

[Adam]

External waste gate would require a more complex exhaust aswell, no?

So is external one setting and that's it, whereas internal is variable and controllable by a boost controller?

[nickknack]

The sound of an external wastegate > everything else

[JRod]

External waste gate would require a more complex exhaust aswell, no?

So is external one setting and that's it, whereas internal is variable and controllable by a boost controller?

Depending on how/where you mount the gate. you can mount it off the headers/uppipe then connect to the dump off the turbo. Or you can get it mounted onto the rear of the turbo exhaust housing and get it plumbed in to the dump pipe from there. Nothing dramatic.

You still run a boost controller with both of them. Internal is only variable if it has an adjustment point on the rod that connects the gate to the body which has the diaphram inside. If its just a rod then you don't have any adjustment. The external one can get the springs changed (I think it was like $10 for a different spring) by opening it and pulling it out to fit the desired one. As I said, its best if you work out what you are planning on running and then fitting the appropriate spring then.

[MrSober88]

BTW.. is this the brace that needs to be removed to make room for the down pipe ? I rember reading that B4`s didnt have it..



Thanks

Looking the goods, Can't wait to see it finished.

As far as I know this is the brace that everyone talks about being in the way.

[U-Shell]

When you work out what boost your planning on running (15psi/20psi/30psi etc)

[Adam]

One more Q Jrod.

You are just talking about the absolute limit of boost that can be run, Right?

Boost controller just controls the wastegate if you have say a 20psi spring, but for some reason wanna run 10psi? (talking super leymans terms here)

[Beckers]

Build moving forward now, good to see.
This car is going to be a beast !!!
I can't wait to to see it finished.

[vicelore]

I was wondering why my thread was getting no reply compared to some of the stupidest Subaru questions going around atm and everyone's responses in here make me feel better. I'm glad its the fact I'm just asking questions only 4% of the guys on here know the answer to.. I thought I must of been boring you guys

when I researched the diff between waste gates and bov it said waste gates where the exhaust manifold side of the turbo and bov was the intake side? it sounded like a waste gate was open until a spring tension was meet but a bov was normally electronically controlled?

and yes the tuner said 27 ish psi would be very obtainable

[JRod]

Yes. It is the max level you want running through. Say your controller is set to 10psi, and your gate is set to 20psi. If it fails then it will peak at 20psi before opening to vent out excess pressure.

[Adam]

BOV is vac operated.

It vents boost pressure between turbo and Throttle body.

Are you mistaking BOV for EBC (electronic boost controller)

Yes. It is the max level you want running through. Say your controller is set to 10psi, and your gate is set to 20psi. If it fails then it will peak at 20psi before opening to vent out excess pressure.

yeah! Learnt something about real engines, not front lips on gen 3s today!

[aekOne]

when I researched the diff between waste gates and bov it said waste gates where the exhaust manifold side of the turbo and bov was the intake side? it sounded like a waste gate was open until a spring tension was meet but a bov was normally electronically controlled?

the wastegate is fed from the charged (boosted/compressed) air side of the turbo and is controlled by your boost controller.

the bov is a pressure relief valve that relieves the compressed air and reduce the surge loading on your turbo. the bov is operated via a vacuum hose from the intake manifold

[JRod]

I was wondering why my thread was getting no reply compared to some of the stupidest Subaru questions going around atm and everyone's responses in here make me feel better. I'm glad its the fact I'm just asking questions only 4% of the guys on here know the answer to.. I thought I must of been boring you guys

when I researched the diff between waste gates and bov it said waste gates where the exhaust manifold side of the turbo and bov was the intake side? it sounded like a waste gate was open until a spring tension was meet but a bov was normally electronically controlled?

and yes the tuner said 27 ish psi would be very obtainable

Double post ftw!!!!!!

Bov is not electronic. All a bov does is vent excess air between the turbo and engine when the throttle closes. If its not fitted or the bov spring is tight then the only way for it to vent is back through the turbo. The blades are spinning one way pushing air in but there is more pressure trying to get out which then gives you that turbo flutter sound but can also bend or snap the blades.

[vicelore]

Sorry im 7 beers down and was replying on a mobile..

The main differences i saw ( except the positioning of the valve itself ) was that a waste gate was constantly venting pressure to maintain a level of pressure thru the whole rev range. where a BOV hits a certain pressure and fully opens venting all pressure ?

[aekOne]

have a read here mate

http://www.gfb.com.au/blow-off-valves