20 psi?

[sillylepricon37]

My engine got rebuilt and there is currently 350 miles on the motor.

Same rods, polished
Same Crank, polished
New bearings
Topline Pistons
Arp Head Studs
Cometic Head Gasket
Fresh head including valves, valve guides, same springs and retainers, new lifters
272 Cams

550 cc injectors
Walbro 255
Stock FPR

16g turbo, I am currently running 10 psi and have hit 350 miles, my question is at what point can i start running 20 psi

I ran Mobil 1 clean 5000, replaced the oil like 3 times in that 350 miles

 

[JusMX141]

Some will tell you that right now is fine- I've known a lot of guys who have assembled new engines, drove or trailered their cars to the dragstrip, and put their first 50 miles on going 1320 feet at a time.

If it were me, I'd run it just past the 1k mile mark before I gave it hell.

 

[sillylepricon37]

alright well i'm at like 2300 miles or something and i got it tuned pretty well on 8psi. Just yesterday i turned it up to 21psi, and the a/f ratio stayed the same? I got idle surge and it doesn't really seem that much faster. I can't even break the tires loose in 1st gear. I'm running 10 degrees of timing at 2000-2500rpm and then 15 through the rest.

I have LSD but i'm pretty sure somethings not right. I will post a log, but i don't have wireless right now because i'm at my grandparents. oh and no knock. i think i got 1-2 raw knock at 2500rpm..

 

[96WhiteTSi]

i always did mine around the 500-1k miles. but really its up to you... when ever YOU feel its safe.

 

[sillylepricon37]

alright well i'm at like 2300 miles or something and i got it tuned pretty well on 8psi. Just yesterday i turned it up to 21psi, and the a/f ratio stayed the same? I got idle surge and it doesn't really seem that much faster. I can't even break the tires loose in 1st gear. I'm running 10 degrees of timing at 2000-2500rpm and then 15 through the rest.

I have LSD but i'm pretty sure somethings not right. I will post a log, but i don't have wireless right now because i'm at my grandparents. oh and no knock. i think i got 1-2 raw knock at 2500rpm..

 

[dsm93turbo]

If it was me id just baby the car till i got some miles on it.

 

[sillylepricon37]

i already have the miles on it. Read the post i posted before this one.

 

[97 swap]

Like everyone else has said, it's really up to you bro. Babying your car was a big deal a few decades ago but not so much now you should be perfectly fine jumping up to 20 psi. Just keep an eye on your temps.

 

[sillylepricon37]

i just want to know why there isnt a difference in 13 psi and 25

 

[CrankWalkerX99]

Boost leak under higher psi? Maxing out injectors? I assume you have a boost gauge to tell you have the increased boost which is working correctly?

 

[JusMX141]

i just want to know why there isnt a difference in 13 psi and 25

You're getting knock which is pulling your timing.

12psi of extra boost should give you a full second off your timeslip depending on the turbo or the setup / tuning. If you're not noticing a difference, something's wrong.

 

[sillylepricon37]

hmmmm.. maybe my bov is not tightened enough? i didn't touch that when i turned the boost up.
On the timing section its up to 15. and at 2500 rpm i get 2 rawknock. and my coolant temp is up to 230.
but the a/f ratio stays the same witht the boost increased.