Max safe boost? [Merged 10-6]

[Turbolaser]

Is it safe to do the boost contol solenoid mod on a stock 1G?

 

[Calan]

wow thanks guys for hijacking my thread and not reading what i have posted i dont mean to be a dick but i just want to no wht the stock internals will hold with a 14 b yes i have a boost gauge its a autometer and yes i have a logger i will do all the fuel and if you want to no what fuel stuff and brand then it will be a wally 255 afpr dont no what kind fic 900's room for bigger turbo im going to do ebay exhause because a pipe is just a pipe imo and ebay intake i will prob to a punishment fmic to becuaes i think that will be enough for me my goal is 20 psi but at most 25 please dont hijack my thread guys thanks.
p.s only post if your going to help i dont want to here o you need to have a logger and boost gauge and if you dont no abuot this stuff then dont go above stock boost. i no all about turbos and all of that im not saying i no everything but i not a noob

I'm not sure what all you said here... I agree with the hijacking not being cool, but I stopped reading half way into it because the run-on sentence, spelling, and grammar started to make my head hurt

But in case you missed my post in amongst all the others:

The amount of boost that a stock motor (or any motor) can handle is irrelevant. It's all about how much power you are making and how much detonation you have. And even though people usually rate head bolts and head gaskets by how much boost they can withstand, a more accurate term would be cylinder pressure, which is a combination of boost, compression, etc.

A big hog turbo at 18psi can grenade a bottom end as fast as a 16g at 25psi.

Not to be insulting, but if you are asking that question, you don't need to be going above a safe level (12-15psi) anyway until you learn to read and understand logs and tune your car. If you were just curious...well that's different

Good luck!

 

[doctor_shock10]

i would say keep it under 25 on a stock block. im running a stock motor... head block internals... and i have a 50 trim on my car with all the supporting mods boosting around 21 psi. and i have no problems. to me i would say its a hp number you should be mor concerned about if your worried about your motor. now if your worried about your turbo thats a whole nother animal. your prob looking at 18 psi MAX on a stock t25 if your lucky. i popped mine at 16 psi.

this is the best reply i saw, but thats just me

 

[jrohner]

A 14B, no matter what, won't get your hp high enough to risk your engine. The only risk is if you have a really crappy tune. Stock, these engines are well known for being good for 450-500+ hp easy, but I've heard of over 600 at the wheels here too.

 

[joey17]

so then if i have the fuel for it and the fmic and prob methkit i would be fine with about 350-400hp and 20 psi becuase thats what i want and yes later on i will get link

 

[1990TSiGuy]

I just recently purchased a 1990 TSi. Its got a 3" GM MAS, MAF-T ver 2.02, 255hp Pump, Aeromotive FPR, 550cc injectors. It has the TD05 Turbo, big 16g. The motor is stock to my knowledge besides those upgrades, any suggestions on what I can safely run for boost. The gauge currently reads around 12 psi, and it has a MBC, could I bring the boost up more without blowing anything to pieces?

 

[Boost92awd]

Do you have a logger? If you dont, dont turn up the boost untill you get one.

Your going to need to monitor your car and see what it will let you turn it up to. You'll probally beable to get to around 20PSI before you max out those 550's.

 

[sicktsiboy]

14 psi I would say...do you know if it was actually tuned? you might wanna ask.

 

[afsdsm]

Get your self dsm link its the only thing between you and 20psi plus. Exepct for head studs and mls head gasket.

 

[snakeyes711]

with those mods I'd say you'd be good at 18 psi . I wouldn't turn it up until you see the engine data on a logger first for real. You say tdo5 turbo, have you verified its a b16g? I've got around the same mods with out the maf, 255fp, and I've ran it at 16psi no problems, I get a little knock up high but I don't hardly rev it that high as the powers started to fall off by then.

You've got 550's too, Mine are maxed out at 16 psi, and they are 450's.

 

[1990TSiGuy]

thanks for the info. it helps a lot, I'll look into purchasing a logger seeing as how I don't have one yet and it seems to be recommended.

 

[rush2252]

wow thanks guys for hijacking my thread and not reading what i have posted i dont mean to be a dick but i just want to no wht the stock internals will hold with a 14 b yes i have a boost gauge its a autometer and yes i have a logger i will do all the fuel and if you want to no what fuel stuff and brand then it will be a wally 255 afpr dont no what kind fic 900's room for bigger turbo im going to do ebay exhause because a pipe is just a pipe imo and ebay intake i will prob to a punishment fmic to becuaes i think that will be enough for me my goal is 20 psi but at most 25 please dont hijack my thread guys thanks.
p.s only post if your going to help i dont want to here o you need to have a logger and boost gauge and if you dont no abuot this stuff then dont go above stock boost. i no all about turbos and all of that im not saying i no everything but i not a noob

Threads that have been merged IMO are pretty much an open discussion. Your OP has been answered time and time again, and "not to be a dick" but if you would like somebody to address your situation try not being so hostile and using punctuation. Ive tried reading your post a few times and I keep reading the same sentence twice and get lost.

Also im pretty sure the person your attacking is a female who was attempting to answer your question at one point. Back on track there is NO safe way to measure how much boost you can run as stated before by calan and many others get a logger and see where the Air:Fuel ratio is. A good tune will help more than simply turning up the boost.


-Kolby

 

[mheidemanjr]

ok i got a turbo back exhaust exept the o2 housing k&n filter and stock injectors the walbro 255 on the way i ordered it today every thing else is stock expet the fuel pump rewire i did todaythe boost is right around 13psi at full pull can i turn it up or do i need more supporting mods? if so what should i go with? bov ,injectors , safc? allso im looking to get a logging system set up put my pockets are runni9ng thine any low cost ideas out there?

 

[viperbenz1]

i wouldnt go over 15psi without fuel injectors and safc, and with 255 walbro your going to need afpr.

 

[viperbenz1]

also get 1g bov , the 2g one leaks boost

 

[mheidemanjr]

ok when i get the walbro what is the correct fuel pressure to run? allso i just bid on a set of 660cc injectors of ebay what boost now?

 

[mheidemanjr]

also get 1g bov , the 2g one leaks boost

is the 1g better then say a aftermarket one cause they are pretty cheap?

 

[jrohner]

Stock boost is 13-14, so yes it's fine where it's at now. If you want to turn it up, only up it a couple pounds. Don't waste much timing on that tiny T25 turbo though, they aren't much good. Get a 14B from a 1G, and you'll feel more power guaranteed.

 

[stefanOst]

Anytime you start to turn the boost up over stock, you will want something to log with. Did you order an AFPR with that 255? If not, you might overrun the stock injectors and run pig rich. To make that 255 worth anything, you will definitely need some larger injectors to take advantage of it, and obviously something to tune with, SAFC, or ECMlink. Are you still on the stock T-25?

 

[mheidemanjr]

well say i wanna run 17psi what should i buy?

 

[mheidemanjr]

Anytime you start to turn the boost up over stock, you will want something to log with. Did you order an AFPR with that 255? If not, you might overrun the stock injectors and run pig rich. To make that 255 worth anything, you will definitely need some larger injectors to take advantage of it, and obviously something to tune with, SAFC, or ECMlink. Are you still on the stock T-25?

yeah im stilling running the t25 i want to get the supporting mods out of the way for either a big 16g or a big t28 with fmic, im tuning iliterate so whats the easyest tuning option besied paying some one 200 an hour? i am bidding on a safc 2 would that be good enuf for tunning or do i need logging software?

 

[95GreenGSX]

So, basically im wondering how much boost is too much on a stock motor? Im currently at 20psi on a fp 18g. Im worried about my head lifting off my block because my motor is 100% stock. I was thinking about getting some arp head studs or some L19s. Any one have any information on this topic?

Thanks

 

[ed_dogg23]

I lifted the head at 28 psi. with stock head bolts. Ive ran 35+ with the cheap head studs. You should really read the forums before starting a thread.

 

[AWD-TSI]

I ran 30+ (spiking) holdin 28it psi on a E3 16G and never lifted. although i wouldnt recommend it. ### kind of power u lookin to make. L19 are a bit over kill?

 

[Quirk]

If your going to daily drive it I wouldn't put it any higher than 20psi.

 

[hediki12]

the correct question to ask is how much power is too much for stock internals... answer 7bolt around 400- 6bolt around 500hp.... all turbos "push" different amounts of air, but a small turbo (example) t-25 @ 10psi moves less air that a gt35 @ 10psi... so the volume of air they move are different (cfm).. so bigger the turbo the less psi you need to make your numbers the smaller the turbo the more boost/psi youll need to make your numbers (and thats if it will efficiently operate @ those numbers and that amount of boost)... some one correct me if i stated anything wrong here.