12max psi according to my ecu, sadly, found a manifold to head gasket blow out, i assume thats the reason its falling on its face.

stock b16, arp studs, gsr cams,1000cc, single walbro, stock IM
fullrace manifold, downpipe
Peakboost IC piping
tial MVS 38mm vbands

 

Give us more specs! Do you have a graph with pressure being logged? Why on God's green earth are you running an s400 to make barley 300 hp on a dynojet? I know you have a stock motor but why the choice of such a large and laggy turbo? Are you seeing what the stock motor can do before putting a built motor in?

 

pretty much^ i have a 2 liter in the works, and i have no problem running 18-20 psi on stock block before i would worry about it

6800is around where the boost starts to flat line, i could get a boost log through dynojet

 

turbos huge.. how's it even spool it.

 

Thats not terribly laggy, Ive seen much worse. What turbine wheel did you order, and what housing is on it?

 

12 psi at 68-7400ish, cant tell by looking at the graph, but its around there

 

just took my manifold off and needless to say, every cyclinder was leaking at the head:turbo manifold gasket

 

Not bad for such large frame turbo on a 1.6.. I've seen much worse. setup looks good

 

what is the exact specs of that turbo?

 

http://www.full-race.com/catalog/pro...oducts_id=1910

 

 

always been a fan of your avatar^^

 

that is a HUGE turbo for that setup

 

do u have a dumptube?

 

they are tucked, 90s straight to the ground, i dont think they are on in the first pictures

 

That's one of the worst powerbands I've ever seen.

 

Do you expect to go back and run it again with the exhaust all sealed up before you take it further?

I'd be very interested to see what this thing can do when it's not being handicapped by leaks. After all, it is kind of an extreme example of huge turbo on a small motor. . . In for results on a very interesting experiment!

 

yes im going back when the leaks are fixed, its for fun with a small motor, the 84mm will be done around january

 

thanks, but if you can read it says that the exhaust was leaking before the turbo.

 

guess he didnt read the whole thread before posting.

 

I'e just put a 40 on a stock b18 and it spools at 4100rpm (14psi) I was amazed!

Looks like a decent powerband considering the turbo size especially with the blow, is the flange warped?

I'd vtec a little earlier, you can see the jump in torque, it'll help spool and keep things together for longer, you on pump fuel?

 

i like to let my brother help me with my car since it interest him and he reused the gasket. though i had a new one on the counter. no biggie, dyno tomorrow or so.

 

bump for a nice turbo

how would this turbo compare to the s372?

 

Jesus, look at the s400 compressor map alreay, you'll go If you're saying boost stabilizes at 6800, that only explains the lazy curve, not peak power. If it wasn't seriously noticable, that means it wasn't enough to wildly contaminate your intake.

http://www.full-race.com/articles/bo...00-1050hp.html

The math puts your motor at ~1.8 PR with about 25lbs/m of flow. That's on the very leading edge of the compressor map in an area of ~64% efficiency. And that's assuming a stellar 90% V.E. for your motor at 8k. That turbo will ONLY do anything special if you can crank it to 30psi on your motor. Otherwise you'll be lucky to even hit a 70% efficiency island...



Versus a s372 on a mild 1.6L, a s4xx will trip over it's ginourmous wheels, do a face-plant into the asphault, skin it's knees, and cry for mommy - just as shown.

 

100% agreement with everything stated in this post.

OP, PLEASE get the 2.0 liter in there already.



- Derek