Want to build costom turbo kit. Need advice from boosted guys!

[pimp my yaris]

Got some real work done today. I had to stop I did not have a 8mm by-hexagon socket to remove my head bolts. Ordered one today.

[pimp my yaris]

more pics

[cali yaris]

mmmm, a build thread... thank you.

[Viperoni]

Originally Posted by Blown_xa

Yea, I don't even understand the physics behind how that can even occur.

Me neither.
When I saw the belt grooves staring at me, I had to do a double take. I KNOW I put the belt on properly because I saw the "Goodyear gatorback" logo looking at me lol.



FWIW, My motor's also seens over 8k from a couple of mis-shifts, still works good :)

[Bluevitz-rs]

My motor saw about 8600 once from a miss shift from redline in 3rd back to 2nd passing two gravel trucks. 3 valves did not survive and it sounded like someone threw gravel IN the motor. Scared the shit outa me. But the funny thing was it never set a code and had no choose but to continue driving it for the next 250km on my trip LOL.

[suckerface]

Slightly off topic, but where in Chicago are you Pimp? I'd love to come check out your work and offer any assistance on the weekends if you need it, and with being in Milwaukee, it's only a 2-3 hour drive. I want to do a turbo build myself eventually, but want to see things first hand to get a better understanding of what all is involved.

[Parmas]

Originally Posted by Blown_xa

From assembling a few different Toyota motors, I can tell you that the Scion tC motor has the same dimension valve springs. So I've thought about just purchasing upgraded springs ( advertised for the tC) and using those.

I guess I have lucked out, using stock head and my limiter is set to 7300rpm. I've even slammed it in the wrong gear a few times and the rpm shot well past what the tach shows (8000 rpm). I'm pretty sure it was about 9000 rpm once when I was at the dragstrip and put it in second instead of 4th. I think the only reason I didnt get valve contact was because maybe the valves cleared the lower compression pistons even with float. I did hear a noise afterwards which scared me for a few minutes, until I figured out that my power steering belt flipped upside down! Lol

What compression were you running? Wow 9000rpm on stock head is a very nice dream hey !

[Blown_xa]

Originally Posted by Parmas

What compression were you running? Wow 9000rpm on stock head is a very nice dream hey !

8.5:1 Is the compression ratio.
I was at 7300rpm in 3rd and put it in 2nd. Car sounded like a sports bike. I just did the math, there is a 31% difference in rpm drop between 2nd and 3rd gear ( xA trans). So 9563rpm is what it hit considering I shifted from 7300rpm.
This happened about a year ago.

[pimp my yaris]

Originally Posted by suckerface

Slightly off topic, but where in Chicago are you Pimp? I'd love to come check out your work and offer any assistance on the weekends if you need it, and with being in Milwaukee, it's only a 2-3 hour drive. I want to do a turbo build myself eventually, but want to see things first hand to get a better understanding of what all is involved.

Thats funny. I have relatives in Greenfield and I was just there for christmas with my car. I bought my car in Milwaukee at Heiser Toyota during the cash 4 clunkers rush.
I live in Lake in the Hills. It is in the extreme north and west end of the Chicago burbs. You are welcome to check it out when I get her back together again.

[pimp my yaris]

Well I got the head off today and it looks good. I dont see any bent valves or impact marks on pistons. I even put it upside down and fill the head chambers with water. None leaked out. So its still likely I spun a rod bearing. I guess I will be pulling the rest of the motor this weekend. I cant believe there was no metal chips in the oil with all that noise.

[fnkngrv]

might as well consider buying another motor and keep your top end for a rainy day if that is the case...how many miles is on your motor again? I take it you are going to pull your bottom end apart and go from there? At least you didn't have your block turn into swiss cheese like mine.

[pimp my yaris]

I am going to pull the bottom end on sunday and check it out. I will most likely order crower rods and je pistons and rings from this Race engineering web sight. https://www.raceeng.com/c-375-1nzfe.aspx

I am also thinking of buying a new clutch from micro image.

[cali yaris]

^ They list CP pistons. I have those and Pauter rods on the shelf. I can probably beat their prices if you want JE and Crower instead.

[pimp my yaris]

Ok, engine is built in the car and running with cp pistons and Pauter rods for those who didnt see the build thread. I am working on a return line now. I plan to drill a hole in the top of mystock rail and tap the hole. I then will screw in a -4an fitting and run that line to a boost controled fuel regulator and then back to the pump top with another hole and fitting. I was thinking of using a larger -6an line but that would be even larger then the stock feed line coming from the pump. I will also remove the stock filter and regulator and attach the feed line directly to the pump. I will attach a in line filter somewhere on the bottom of the car.
Has anyone tried this or something similar yet? Thoughts?
Garm or blown xa if you see this can you tell me what size your return line is?

[fnkngrv]

Wish I had my data for you Brian, but with the hiccups I am dealing with I haven't been able to get to the dyno for real world evidence to upgrade mine. It will happen before fall though.

[cali yaris]

^ I'll check this morning.

[pimp my yaris]

1200mi on the rebuilt motor. It is running great. I did a compression test yesterday after I had some tuning issues on a long road trip. All cyl. were 120-123 psi. Also no oil burning at all.

I have my fuel map perfectly tuned while in the boost. Unfortunatly my AFR's vary a lot during normal out of boost driving. Depending on engine temps. and under hood temps. Its getting pretty hot under there in 90+ degree temps.

I am thinking of hooking up my factory o2 sensor to see if this helps. I am tired of dragging my lap top around on every long trip.

[pimp my yaris]

The new fuel rail I got from MI is awsome. I will post pictures later.