Boost prep for fa20

[Zaraia]

Maybe im just bad at using the internet, but i havent seen any posts on engine prep for boosted 86’s, and ive been doing an ample amount of research on what kind of boost i want (turbo or supercharger) and ive settled on a supercharger, hks v3 to be more specific, ive seen posts on how to prepare your car overall for boost. What should i look into as far as engine preperation? I plan on doing ALL of this myself, im not keen on taking my car to anyone else as ive had terrible experiences in the past with mechanic shops. That being said, im not the most knowledgable when it comes to engine work, but im able and willing and i guess thats half the battle. what im looking for is just preparing my engine to take a conservative amount of boost nothing to high and not blow up. Its just a street oriented build that im going for. Thanks in advance for any recommendations i greatly appreciate you guys taking time out of your day to share your knowledge with a noob like me.

[weederr33]

If you spent any time reading threads on this forum, you'd notice a few things popping up when it comes to FI. A few being oil coolers, brakes, good tunes, and some jackass will usually say something along the lines of, "you shouldn't boost your car if you don't know much about cars."

[sid94]

Oil cooler flex fuel if you have access to E85 and a tune from Hri or delicious tuning. If you got room in the budget then get a catch can while you’re at it

[rb6freak]

There is a sticky in the forced induction section that says "notice to everyone installing forced induction" regarding some vacuum lines that need to be clamped down. That and clutch is all you really need to do for prep. As for care, there are many things such as oil cooler, run the best fuel you can, good tune, etc...

[DarkPira7e]

Please get catch can(s)

[J1Avs]

Originally Posted by DarkPira7e

Please get catch can(s)

I’ve seen some swear by this, and others say it’s not necessary. Is it recommenced for some kits over others?

Other thing I can recommend, budget some extra money in reserves in the event something unfortunate happens.

[DarkPira7e]

Originally Posted by J1Avs

I’ve seen some swear by this, and others say it’s not necessary. Is it recommenced for some kits over others?

Other thing I can recommend, budget some extra money in reserves in the event something unfortunate happens.

People swear by it because it's a good idea. When oil starts being routed into your intake and mixing with fuel, it effectively lowers you octane rating. You wouldn't willingly put 87 octane in this car, let alone with boost, would you?

My car, NA, has blow by when I'm driving the car hard ( I drive on the street most of the time, car has never seen an actual track). My engine had blow-by at 30k miles and certainly still does. I have the Radium PCV side catch can, do some research and see what you like best. Some have different mounting points that may suit your build. I like the out of the way nature of the radium can, so I chose that.

[86MLR]

Pistons and rods

If you require a catch can because of poor ring to bore seal do your research.

Ensure it is baffled and/or well engineered.

Killer b make a good cyclonic one.

I've used fuel foam in custom baffled cans with excellent success.

Ensure they design you choose is easy to clean and maintain.

Plumb back has advantages.

Drain back, although harded to install, also has it's advantages.

My NA 86 sees no real blowby and I thrash the bejesus out of it.

[tyler_win_photo]

Say a prayer and add the boost.


There's nothing in particular you need to do in preparation of boost. But supporting mods would go a long way: oil cooler, catch can, etc.

Just remember to have a reputable tuner tune your car. Preferably in person so they can diagnose any possible issues with your install.. happens more often then you may think.

[Hags86]

In my opinion...

Must have
Clutch
Oil cooler

Should have
Budget to replace rods sooner than you'd think
Data logger of some description

Nice to have
E85 tune with flex sensor
Uprated fuel pump and injectors if using e85

Don't know if stock injectors/pump are up to the task for petrol - depends on your horsepower target I guess.