Official : How much boost can i handle thread

[Krazed]

I will keep this as a sticky, as this is probably the most asked question in here. If you dont see your motor, make a post and i will add it to the list. All assuptions are based on stock motor, with midsize T3/T4 turbo, and minimal fuel and timing upgrades. if you need something more specific let me know and ill help you out.

Honda/Acura:
d15- 7psi
d16- 8psi
b16- 8 1/2psi
d17a2- 7-8psi
B18b- 10psi
b18c-8 1/2psi
k20- 8psi
k24- 6-8 psi
f23- 8psi
f22- 8psi
h23- 8psi
h22- 8 1/2psi
b20- 6-8 psi
Nissan
k24- 8 1/2psi
sr20de- 8psi
sr20det- 12-14psi
vq20de- 6-8psi
vg30- 10-12psi
vq35- 8 1/2 psi
rb20- 8-10 psi
rb25- 12-14psi
rb26- 15-18psi

Mitsu
4g63- 8-10psi
4g64- 8-10psi
4g92- 6psi
6a12- 6-7psi
420a- 8psi

Mini cooper
standard motor- 5-6psi

Toyota
2jzgt- 8 1/2 psi
2jzgte- 15-18psi
4afe- 6psi
7afe- 6-7psi
1zzfe- 6psi
xa-xb scion standard motor- 6psi
(ScionTC) 2azfe- 8 1/2 psi

Mazda
zmd- 6-7 psi
fsd- 6-8psi

[cantcme68]

what about if you set the motor for boost but don't do the sleeves for d16z6?

[Krazed]

d16 is listed.

[cantcme68]

Sorry I ment build without sleevs.

[redcivic02]

d17a2??

[Batman™]

hey d, your quotes for the mitsu 4g63 are drastically off.

it can handle up to 400 whp, which is roughly 45 lbs./min or more. this translates into at least 24 psi if not more.

[DaNish]

my friend ran 22psi all day everyday with a small 16G for a good amount of miles with upgraded fuel mods and a stock bottom end...granted smaller than a t3/t4 but you get the idea.

It's more about the fuel/tuning on a stock motor than anything else. There's a k20 running 19psi on pump gas with a stock motor. I'm not saying everyone should do this or it will last forever, but there are just too many variables that go into a setup even with a stock motor that will determine how much boost you can run safely.

[Monte]

I think he is trying to just set a baseline for stock engines, unmodded, which are what 90% of people that ask the questions have....no fuel upgrades.

[95civicex]

I think he is trying to just set a baseline for stock engines, unmodded, which are what 90% of people that ask the questions have....no fuel upgrades.

If you're running a Honda engine on boost with no fuel upgrades, you're retarded and deserve to grenade your motor.

[H22_YA1]

Toyota 2ZZ-GE: in 7th gen (2000+) Celica GT-S

please

[Krazed]

ok let me clarify

hey d, your quotes for the mitsu 4g63 are drastically off.

it can handle up to 400 whp, which is roughly 45 lbs./min or more. this translates into at least 24 psi if not more.

thats a low estimate for a t3/t4 which is what i am figuring all these in. and again i know you can make much more power, but as a baseline with minimal fuel and timimg upgrades this is a path to follow. you will need some sort of fuel controller on all of these, but to safely run boost with a T3/T4, on the street, this is a guideline. 24lbs on a T3/T4 would be actually more in the 450+ range which would need heavy modification to the car to allow. not really applicable on a stock setup.

and like i said i know you can tune a honda motor to over 600hp on a stock motor, but that doesnt mean its efficiant or safe. These again are Guidelines for a safe street build on a stock motor with minimal fuel and timing upgrades.

[Krazed]

Toyota 2ZZ-GE: in 7th gen (2000+) Celica GT-S

please

unfortunately im not sure on that motor, the computer does not read boost well and in turn causes many many problems in tuning. I have not come a cross as successfully turbo setup for a celica that didnt require a full motor build and a stand alone. The motor itself, just the block and head, i assume could handle 6-8psi, but that would be going on teh assumption that you could get the stock computer to accept the boost readings. We have found a way to do this on the is300, but not yet on the celica.

[Krazed]

d17a2??

added, and click the link in my sig if you are looking for a good turbo kit for your car

[redcivic02]

added, and click the link in my sig if you are looking for a good turbo kit for your car

blind you are located only about 15 min from me according to your website.

[CKM610]

I have an 97 integra ls and i just bought a turbo kit from a buddy that is moving. I really don't know much about force induction. i need some help so i could get my car running again. I install the turbo and the intercooler, i got larger injectors (440cc) and new fuel pump. it doesn't turn over. do you have any suggestions that could help me??

[Enigma]

We need a "how much spray can i handle" thread


Your sig doesnt show a turbo kit for the D17 maybe im just blind though

[s2k20a2]

k24 (honda/acura)?

[BMan88]

I don't see B20A5 for us 3 gen owners.

[Krazed]

added

[BoostMonkey]

im currently running a low boost lsvtec on ~7psi (spring set tial wastegate no boost controller) with a t3/t4 57trim, tuned with apexi powerfc. the block and head are stock, but rebuilt with ARP hardware including rod bolts, fresh bearings and rings, and cometic head gasket. 650cc injectors and B&M fpr are the only fuel upgrades. i planned to up the boost in the spring (after tax returns) to ~10psi but am curious if the motor would reliably handle more, say ~12+ psi? yes, i plan to upgrade the fuel pump before i retune. what kind of power would i see with 10psi? 12psi?(currently making 280whp fyi)

thanks for your input
billy

[Krazed]

on that build you could probably see close to 300 with a good tune safely.

[lusty90crx]

okay if i had a zdyne secu and ,eagle rotating assembly stock stroke balanced,82mm srp9.2 comp pistons,acl race bearings ,kms oil pump 100psi with syntec 10w40 oil and honda filter, and a ported fully polished head equipted with stainles nitrate coated .5 oversize valves, stock camshafts, port and polished throttlebody , ported intake matched to throttle body, tial external wastgate, t3 t4 turbo cast manifold, 2.5 inch custom downpipe and full 2.5 exhaust no cat , 6 puck disk and 1900 pressure plate full msd everything even studer box . oh the engine is a b18a1 block with cylinder gaurd and crank girdle support ,full arp head/main studs through hole engine 96 b18b head 1990 acura ys1 tranny in my 1990 crx si how much power could i make , what whould be the most reliable boost psi i could run for a daily on 450cc injectors and a fpr and if i put cams in whats the highest i can rev while still making power without a really hard idle.

[bobz_inc]

Has anyone boosted a stock H22 with 7 or 8lbs? Just wondering what kind of power ya made if you did.

[Wicked Dreams]

whats a good program to tune with?

[Wicked Dreams]

1353909932246.jpg