Need help with junkyard fa

[Anklebiter4000]

Originally Posted by Ultramaroon

That's low. Minimum is 165. Normal is more like 250 but, as long as they're all even, maybe it's ok.


https://gt86stuff.onrender.com/t3Por...00U3S02RX.html

Hmm maybe it’s all from the bad di seals but
this motor has been too much of a headache at this point. I think I might just go with a built short block as soon as I can.


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[Ultramaroon]

Originally Posted by Anklebiter4000

Hmm maybe it’s all from the bad di seals but
this motor has been too much of a headache at this point. I think I might just go with a built short block at this point

I don't know that it's DI seals. RZNT4R makes good points. Is the compression even across all four?

[Anklebiter4000]

Originally Posted by Ultramaroon

I don't know that it's DI seals. RZNT4R makes good points. Is the compression even across all four?

It seemed like it, but the compression could’ve been higher on some. The starter wasn’t cranking very long for some of them. I pulled the transmission just to check the crank sensor plate behind the flywheel, and it turned out to be fine. I took the turbo manifold off and found oil on my exhaust gaskets and on the inside of the manifold. Think I’m just gonna try to take it back.


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[RZNT4R]

Originally Posted by Ultramaroon

I have learned quite a bit this week.

I can now confim, add Hyundai/Kia Lambda V6 injectors to the list. Probably the easiest injectors I've ever pulled, PFI included. A bit of a lift with a flat head screwdriver and the whole fuel rail comes out with the bank's injectors, they slide back in perfect too, the seals probably aren't very tight, the new injector didn't pose more resistance than the two old ones that already had an out-and-in in them.

[Ultramaroon]

Originally Posted by RZNT4R

I can now confim, add Hyundai/Kia Lambda V6 injectors to the list. Probably the easiest injectors I've ever pulled, PFI included. A bit of a lift with a flat head screwdriver and the whole fuel rail comes out with the bank's injectors, they slide back in perfect too, the seals probably aren't very tight, the new injector didn't pose more resistance than the two old ones that already had an out-and-in in them.

I wonder what all the fuss is over the fa20 DI seals. Maybe it just comes down to having the right touch that only comes with experience.

[blsfrs]

Originally Posted by Ultramaroon

I wonder what all the fuss is over the fa20 DI seals. Maybe it just comes down to having the right touch that only comes with experience.

Here's a little light reading.

https://www.ft86club.com/forums/showthread.php?t=42849

[Ultramaroon]

Originally Posted by blsfrs

Here's a little light reading.

https://www.ft86club.com/forums/showthread.php?t=42849

Just say no to drama-queen youtubers. Kidding aside, he's a datum point. I prefer the voice of real, and understated experience, like RZ4NTR's

[blsfrs]

I don't have nearly the expertise of a seasoned wrench like @RZ4NTR but I have installed FA20 DI's. It's not exactly a walk in the park like other DI installations that I researched. I got mine in without incident, but I think the car gods were smiling on me that day.

[Ultramaroon]

Originally Posted by blsfrs

I don't have nearly the expertise of a seasoned wrench like @RZ4NTR but I have installed FA20 DI's. It's not exactly a walk in the park like other DI installations that I researched. I got mine in without incident, but I think the car gods were smiling on me that day.

That's what I wonder about. Is there a special secret technique? I know about the insertion tool and have read all the standard stuff.

Maybe it's just a PITA.

[blsfrs]

Originally Posted by Ultramaroon

That's what I wonder about. Is there a special secret technique? I know about the insertion tool and have read all the standard stuff.

Maybe it's just a PITA.

I sent my injectors to Injector Pulse, in Chesapeake, Va for cleaning and testing. They installed the seals (4 fewer pitas to deal with). Getting them into the engine required putting them in the freezer for 2 hours, grabbing 2 of them, running to the garage, stick them into the fuel rail, and pushing them into place with fuel rail bolts. Hoping all the time that those little teflon boogers didn't tear. There was a guy here on the forum (Hudson?) that, with the help of @CSGmike, splained the process.

[RZNT4R]

I mean I've done it both ways on the VW 888, reuse seals, install new seals, results were the same, except with the hassle of installing new seals. The SST in the brz/86 manual are kinda interesting, the big disc to shrink it back down seems dumb, I learned to do it on the Aprilia DiTech like 15 years ago with a piece of hose and a hose clamp. It gently, softly and uniformly clamps down on the seal to shring it back onto the groove. The Aprilia injector was an absolute pain in the butt, one teflon ring and 4 o-rings all had to be perfect or that crap would not even start, and you're working that thing down in the body of a scooter.

But hey, I haven't had to deal with the twins injectors, mine is fine and they're not really popular cars here thanks to winter, but the injector looks a lot like it's got the same design as the usual Bosch deal (aside from the little taper thing). Either Subaru went bonkers on the tolerance for the hole, or there really is something to the injector itself. I mean, BMWs are a bitch to come out, but that's carbon, they go in fine, no freezer shennanigans.

[DarkPira7e]

When I put mine in with new seals, it was very very hard to get them in. I ended up getting them in far enough to start threading the bolts, and carefully tightened each side down, alternating left to right until they went in all the way. Everything ended up OK for me as a first timer

[Ultramaroon]

I haven't seen other DI designs but functionally, the taper makes sense to me, especially if the seal is molded from ePTFE like Gore-Tex. First time the combustion chamber feels any pressure, the seal slips up and wedges into the tapered section. ...I think.