92HondaEX Official Turbo Project Thread.... (56K Warning)

[MRX]

na cams do not spool turbos faster. They are geared for higher revs and will not be benifical for turbo applications. Na cams have a longer duration causing more lift in the valve and also valveover lap. This is bad for turbo applications. Forced induction engines require a smaller cam profile with a shorter duration.

http://www.cb7tuner.com/vbb/showthre...hlight=overlap

[KillerCam282]

^^^Nice link, Toine. Well then, I rest my case.

[verothacamaro]

I wanna see some Mustang GT's being spanked!

By the way.......Have you considered using Crome as your tuning platform?
It works off the ECU, but has all the goodies you'd expect at half the price of uberdata or Hondata. I use it on my Turbo Civc and it works wonders.

Let me know if you want to do some research on it, I'll give you a link for the website.

Awesome work, by the way! Giving us CB7 guys hope around the world.

[Clueless]

thanks guys...I was doing some research last night/this morning that the turbine housing alone goes for $300+ on some wbsites, so if I needed to, I could sell mine and get a t3 housing witha .63 ar. But idk if the wheel will fit the housing or not...

[Clueless]

Here's the link for the housings if you wanted to see for yourselves...

http://64.225.76.178/catalog/thousing.html#t3

[MRKIKKOMAN]

correct me if im wrong but uberdata is free... well at least i downloaded a version off the internet. Maybe i downloaded an old version so it was free. I dont know... lol cant be half the price if uberdata is free...

[Clueless]

I was messing around with some turbo calculation and this is what I came up with(based on stock f22a sohc):

([2156/16.387] × 6200) ÷3456 = 236.03004cfm (air flow at 100% VE)
236.03004cfm × 0.85 = 200.62553cfm (air flow at 85% VE)

[10 + 14.7] ÷ 14.7 = (1.68:1 pressure ratio)

__________________________________________________ _______

T2 = T1 (P2 ÷ P1)0.283
°R = °F + 460
T1 = 75 + 460 = 535°R (assume outside temp was 75º)
P2 = 14.7 + X (X is pounds of boost planned)
P2 = 14.7 + 10 = 24.7 psi (with setup at 10psi)

T1 = 75
P1 = 14.7
P2 = 24.7

T2 = 535 (24.7 ÷ 14.7)0.283 = 620 °R

You then need to subtract 460 to get °F, so simply do this:

620 - 460 = 160 °F Ideal Outlet Temperature

This is a temperature rise of 85 °F
__________________________________________________ _______

Ideal Outlet Temperature Rise ÷ AE = Actual Outlet Temperature Rise

85º ÷ 0.7 = 121 °F Actual Outlet Temperature Rise (at 70% adiabatic efficiency)

Now we must add the temperature rise to the inlet temperature:

75º + 121 = 196 °F Actual Outlet Temperature

__________________________________________________ _______


(Inlet °R ÷ Outlet °R) × (Outlet Pressure ÷ Inlet Pressure) = Density Ratio
(535 ÷ 620) × (24.7 ÷ 14.7) = 1.44990 Density Ratio

Outlet CFM × Density Ratio = Actual Inlet CFM
200.62553 x 1.44990 = 290.88696cfm

290.88696 CFM × 0.069 = 20.07120 lbs/min

__________________________________________________ ________


Now you can use these formula's along with flow maps to select a compressor to match your engine. You should play with a few adiabatic efficiency numbers and pressure ratios to get good results. For twin turbo's, remember that each turbo will only flow 1/2 the total airflow.

Last updated 12/28/02
Turbo Type ----------- Approx flow @ pressure
Stock Turbo ---------- 360 CFM at 14.7 PSI
IHI VF 25 ------------- 370 CFM at 14.7 PSI
IHI VF 26 ------------- 390 CFM at 14.7 PSI
T3 60 trim ----------- 400 CFM at 14.7 PSI
IHI VF 27 ------------- 400 CFM at 14.7 PSI
IHI VF 24/28/29 ----- 410 CFM at 14.7 PSI

========= 422 CFM max flow for a 2 Liter at .85 VE pressure ratio 2.0 (14.7 PSI) 7000 RPM =======

IHI VF 23 ------------- 423 CFM at 14.7 PSI
FP STOCK HYBRID -- 430 CFM at 14.7 PSI
IHI VF-30 ------------- 435 CFM at 14.7 PSI
SR 30 ----------------- 435 CFM at 14.7 PSI
IHI VF-22 ------------ 440 CFM at 14.7 PSI
T04E 40 trim -------- 460 CFM at 14.7 PSI

========= 464 CFM max flow for a 2.2 Liter at .85 VE pressure ratio 2.0 (14.7 PSI) 7000 rpm =======

PE1818 -------------- 490 CFM at 14.7 PSI
Small 16G ------------ 505 CFM at 14.7 PSI
ION Spec (stg 0) --- 525 CFM at 14.7 PSI

========= 526 CFM max flow for a 2.5 Liter at .85 VE pressure ratio 2.0 (14.7 PSI) 7000 RPM =======

Large 16G ----------- 550 CFM at 14.7 PSI
SR 40 ----------------- 595 CFM at 14.7 PSI
18G ------------------- 600 CFM at 14.7 PSI
PE 1820 -------------- 630 CFM at 14.7 PSI
20G ------------------ 650 CFM at 14.7 PSI
SR 50 ---------------- 710 CFM at 14.7 PSI
GT-30 ---------------- 725 CFM at 14.7 PSI
60-1 ----------------- 725 CFM at 14.7 PSI
GT-35R -------------- 820 CFM at 14.7 PSI
T72 ------------------ 920 CFM at 14.7 PSI <--- Note you would have to spin a 2.0 L engine at about 14,000 rpm to flow this much air.

IHI VF 25 ----------- 395 CFM at 18 PSI
IHI VF 26 ----------- 400 CFM at 18 PSI
T3 60 trim ---------- 410 CFM at 20 PSI
IHI VF 27 ----------- 420 CFM at 18 PSI
IHI VF 24/28/29 -- 425 CFM at 18 PSI
IHI VF 23 ----------- 430 CFM at 18 PSI
IHI VF-30 ----------- 460 CFM at 18.0 PSI
AVO 320HP -------- 465 CFM at 17.5 PSI
T04E 40 trim ------ 465 CFM at 22 PSI
FP STOCK HYBRID- 490 CFM at 18.0 PSI
IHI VF-22 ---------- 490 CFM at 18.0 PSI
SR 30 --------------- 490 CFM at 22 PSI
Small 16G ---------- 490 CFM at 22 PSI
ION Spec (stg 0) - 500 CFM at 19 PSI
PE1818 ------------ 515 CFM at 22 PSI
Large 16G --------- 520 CFM at 22 PSI

========= 526 CFM max flow for a 2 Liter at .85 VE pressure ratio 2.5 (22 PSI) 7000 rpm =======

========= 578 CFM max flow for a 2.2 Liter at .85 VE pressure ratio 2.5 (22 PSI) 7000 rpm =======

HKS GT2835 ------- 580 CFM at 22 PSI 400 hp
MRT 400 ------------ 580 CFM at 16 PSI
AVO 400HP -------- 580 CFM at 17.5 PSI
MRT 450 ------------ 650 CFM at 19 PSI
AVO 450HP -------- 650 CFM at 20.0 PSI
SR 40 ---------------- 650 CFM at 22 PSI

========= 658 CFM max flow for a 2.5 Liter at .85 VE pressure ratio 2.5 (22 PSI) 7000 rpm =======

HKS GT3037 ------ 670 CFM at 22 PSI 460 hp
PE 1820 ----------- 680 CFM at 22 PSI
20G ---------------- 695 CFM at 20.0 PSI
HKS GT3040 ----- 710 CFM at 22 PSI 490 hp
AVO 500HP ------ 770 CFM at 22 PSI
SR 50 ------------- 770 CFM at 22 PSI
GT-30 ------------- 790 CFM at 22 PSI
60-1 --------------- 800 CFM at 22 PSI
HKS GT3240 ----- 830 CFM at 22 PSI 570 hp
GT-35R ----------- 880 CFM at 22 PSI
T72 --------------- 1000 CFM at 22 PSI <--- note you would have to run a 2.0 L engine at >40 PSI boost to flow this much air

Conversions used where there was control over conversion factors:
1 HP approx equals 1.45 CFM

1 CFM approx equals 0.0745 lb of air/min

0.108 Lb/min approx equals 1 hp

1 Meter cubed/sec = 35.314 CFS = 2118.867 CFM

1 KG/sec = 132 lbs/min approx equals 1771.812 CFM

power coversions:
1 PS = 0.9859 HP = 75 Kgf m/sec
1.3405 HP = 1 KW
1 HP = 746 watts

Also note I attached a file of above data...

[Clueless]

another buddy of mine(can't remember his name) calculated out that the turbo I bought has a turbine trim of around 75....

[Clueless]

Alright guys...I had to make an decision. I"m gonna post-pone the turbo setup until spring-time due to the many missing parts I still need plus money....so I'm gonna buy a cheap exhaust manifold and run NA until then, but plan to k...eep 272 regrind in

[Clueless]

Alright...finally got some specs on this turbo:



Also, this turbo suppose to show up anytime tomorrow too...

[juan]

clear some space so I can send you a pm.

[Clueless]

clear some space so I can send you a pm.

Been cleaned for a while now...

[F22Turbo702]

Well, a divided housing would help spool up a bit, but the 76trim 1.32 a/r is absolutely massive. I just say good luck.

-Kyle

[Clueless]

Well, a divided housing would help spool up a bit, but the 76trim 1.32 a/r is absolutely massive. I just say good luck.

-Kyle

While being tru, no need to worry. Eventually I;ll be buying a smaller a/r housing to take car of the spooling. Maybe a t4 P trim .58 a/r turbine housing....

[Clueless]

Two things....first, I just got my turbo. I know ya'll want pics, but just hang one for a second, ok?

Secondly, I'm adding the link of the base map(thnaks MRX, even though he probbly doesn't know I'm gonna use it... ), but here it is....

http://uberdata.pgmfi.org/forum/atta...urbof22v25.bin