FA20 question
 

So dropping in my 3rd motor today, however this motor says it's from another 13' BRZ like mine but there's a vacuum pump(?) that my previous motors did not have.

Can someone explain why this one has one and others don't?

Any benefit to having it installed or removing it?

Thanks!https://uploads.tapatalk-cdn.com/201...2cb597250a.jpghttps://uploads.tapatalk-cdn.com/201...e834493728.jpg

AT vs MT. AT has the pump, MT does not. Rip all that junk off and swap the plate from your MT engine over to your new one.

Just curious, what happened to all these engines?

Yup. AT "motor" :/

That's some extreme wear, while still having a usable chassis.

I'm pretty sure someone had boosted the original motor then traded it in at 58k. My first oil change had a lot of metal in the oil so I knew it wasn't going to last long but I just kept dogging it because I have a warranty. About a month ago she locked up on me on the way to work and finally died. 1 month later got a second motor and installed it and it started knocking after 30 seconds. Now Its been 2 months and getting the 3rd motor in today. Sadly I won't be able to keep any of the old cores.

Are you doing all this your self bro ?


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So how far past 58K did the first one run before it died? If you had bearing material in the pan I am amazed it ran more than a day.

I work at the dealership I bought my car from so me and another mechanic are dropping her in. Surprisingly not super hard. But these motors are wack.

Lol we forgot to swap the spark plugs over so we gotta pull it out again

First one died at 75k. Yeah I'm surprised she lasted for as long as she did.

Yeah pulling/replacing the engine on this thing is down right simple. Rebuilding one is a bitch though.

That is impressive. I got mine used at 83k or so and it spun #3 at 89k. I did a new short block and now I'm at about 92K. Don't have much faith though.

Before we droped the 2nd Motor in we had to replace a whole bunch of seals since it was leaking everywhere. Even doing that was dumb.

Got a whole bunch of junk turbos in the back, if only it was worth to boost this thing.

Eeeeek I wish you the best of luck

That's awesome man . Would love to learn how to do so myself !! You in Cali ?


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You don't need to pull the engine for spark plugs, you can get to them raising the engine a bit, or even without raising the engine and the proper tools. Hopefully this motor lasts..

Well my mechanics said **** it and left the AT pump on anyway. Says I'll get better brake pressure...well hopefully no issues

Sadly not over here in Texas. It's not too bad I love working on cars.

What..... pretty sure that's not how it works......

Just replaced mine without lifting the engine. Yeah, proper tools, extra patience (required beers) and a creative mind haha. Easiest way to remove/insert the spark plugs is with a DIY magnetic stick bent 90 degree.

You could go Edelbrock .. what was it .. 100k warranty from them? I'd trust their work the most since companies like Lotus go to them for superchargers.

uuh .. not how it works? im like 99.999% sure.

Yeah I'm going to take a look at the manual because I would assume the AT vacuum pump is on a different vacuum system than the brake booster is.

Edelbrock's warranty is extremely conditional, only lasts for 3 years from new or 36k miles from new when installed by an Edelbrock certified mechanic.

OP's car doesn't qualify for Edelbrock's engine warranty at all, the blower probably has a good warranty on it, but that's not the issue.

If I'm understanding correctly it wont be plugged in or going to anything at all. So...... it wont be doing anything except being a potential issue.

It is for the brake booster. He would need the extra tubes and a check valve or whatever...

Alright so engine is in and running...for now. Might go for a rip here in a bit.

Hopefully that extra vacuum pump causes another issue and I get another motor lol

Dang. I've had mine boosted for over 30k miles with flex fuel and now just got Nitrous and knock on wood no issues.

I know nothing about how the AT works so excuse my ignorance. I am guessing they use vacuum to shift and can't rely on the vacuum generated by the engine because under load the vacuum is too low to shift which would necessitate a dedicated pump. So are you saying the pump is creating a vacuum on the same system as the rest of the car?

It's even dumber than that. It's connected between the brake booster and intake manifold to stabilize the vacuum some driving situations. I couldn't really figure it out from the descriptions in the service and what's-new manuals.

Update

Car is running. Still slow as ****, can't believe I bought one of these...

Curious to see the long term effects of keeping that vacuum pump installed...if I keep it

It gets faster the more you drive it.

Oh man don't say that around here.. some people around here are very sensitive.

After an ECU reset this car runs like garbage for about 200 miles and no I am not exaggerating. But even after that it's still slow, just not as slow. Fun as hell though. It will probably grow on you.

Had it for a year now...grew on me for a bit until the motors blew. After not driving it for 2 months now it's hard to like it again. Oh well...