DIY Turbo Discussion greddy on a 1.8? homebrew kit?
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Old 11-25-2016, 08:00 PM
  #281  
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I did some logs in 2 3 4 5 gear from 3500 and 4500 rpm. I will post them up tommorow
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Old 11-27-2016, 04:42 PM
  #282  
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4th gear 3500rpm
0.2s 2.4 psi
0.3s 4.6 psi
0.4s 7.0 psi
0.5s 9.6 psi
0.6s 12.7 psi
0.7s 16.3 psi
0.8s 18.8 psi
0.9s 20.1 psi
1.0s 21.1 psi

4th gear 4500rpm
0.2s 5.6 psi
0.3s 9.8 psi
0.4s 14.7 psi
0.5s 18.4 psi
0.6s 20.7 psi
0.7s 21.6 psi
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Old 11-29-2016, 10:36 PM
  #283  
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Precision 4828

4th gear (of 6) 3500rpm

0.2s 1.6 psi
0.3s 2.4 psi
0.4s 3.4 psi
0.5s 4.4 psi
0.6s 5.6 psi
0.7s 6.7 psi
0.8s 7.9 psi
0.9s 9.2 psi
1.0s 10.7 psi
1.1s 11.9 psi
1.2s 12.6 psi
1.3s 13.1 psi
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Old 12-07-2016, 09:16 PM
  #284  
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Engine: '94 1.8L
Turbo: GT2560R
Manifold: 4 into 1 bottom mount (absurdflow style)
Downpipe Size/Style: Custom, bellmouth 3"
Exhaust Size: 3". No Cats, Big Maggie
Intercooler Core Size: Vibrant 550hp
Intake Manifold: Honda B18
Headwork: DIY Port, Nothing major, mostly cleaned up castings.
Engine Management: DIYPNP with EBC
Other Spoolin' Helpers/Hurters: LS2 coils, Siemens/Deka 750cc's (BEGi)
Trans & Rear End Ratio: 6-speed, 4.1 torsen
Rear tire size: 225/45R15

FIFTH GEAR PULL, FLAT ROAD:

RPM Boost(psi)

1983 0
2060 .9
2126 1.9
2142 2.7
2214 3.5
2283 4.3
2356 5.1
2407 6.0
2491 6.8
2566 7.7
2635 9.0
2739 10.4
2811 12.0
2930 14.1
3032 16.4
3141 18.9
3296 21.0
3371 21.5



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Old 12-10-2016, 09:40 AM
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^Turbine housing A/R?
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Old 12-10-2016, 11:12 AM
  #286  
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Originally Posted by sixshooter View Post
^Turbine housing A/R?
.64 hotside. Normal 2560 off an s15.
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Old 12-10-2016, 01:06 PM
  #287  
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Proof of concept build in preparation for a 1.8L w/VVT or BP4W (undecided, have both) swap, Compounded
Boost control is still a work in progress ...

Engine: '91 LNC 1.6L stock bottom end
Turbo: GT2871 48 trim Churbo - will get GTX2867R back on there early 2017
Manifold: FM 1.6l
Downpipe Size/Style: Begi long tube NA2 divorced
Exhaust Size: 2.25" Roadstersport 2, Magnaflow Cat
Intercooler Core Size: TC stage - ebay/CXRacing 28"X5.5"X2.5", SC - Uber FMIC
Intake Manifold: Stock 1.6l
Headwork: DIY Port/Polish/deshroud/combustion chambers, Supertech 1mm OS intake, Supertech stock ex, 5-angle seat cut
Engine Management: MSPNP2 v1.2
Other Spoolin' Helpers/Hurters: 5280ft alt (~85kPa amb.) Compound GT2871 w/OA2076 twinscrew - tons of mods and complicated stuffs
Trans & Rear End Ratio: 5-speed, 4.1 torsen
Rear tire size: 205/50R15

FORTH GEAR PULL, FLAT ROAD:

RPM MAP (kPa) TC Out (kPa) Boost (PSI)
1471 136.6 88 7.8
1596 149.5 95 9.6
1745 163.6 104 11.7
1872 176.9 109 13.6
2000 189.5 114 15.4
2112 201.6 119 17.2
2245 209.8 131 18.4
2362 214.1 139 19
2454 217.3 145 19.5
2577 211.5 155 18.6
2677 210.4 157 18.5
2777 213.4 162 18.9
2898 210.5 166 18.5
2969 213.4 165 18.9
3097 207 168 18
3186 214 183 19
3267 208.1 186 18.1
3268 208.9 186 18.3
3387 208.6 183 18.2
3460 212.3 182 18.7
3563 203.8 178 17.5
3638 209.4 170 18.3
3773 206.8 172 18

Manifold Pressure

4th Gear, 1.6 Compound, Manifold
"Crankcase Pressure" is the Turbo outlet pressure - need more DAQ channels

4th Gear, 1.6 Compound, TC out
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Old 12-27-2016, 06:54 PM
  #288  
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Engine: 04 Mazdaspeed Miata 1.8L
Turbo: Stock IHI of an MSM
Manifold: Stock
Downpipe Size/Style: Flyin Miata catless downpipe
Exhaust Size: 2.5" Enthuza Catback
Exhaust Components: 2.5" FM Catless Downpipe to 2.5" Enthuza catback
Intercooler Core Size: Flyin Miata Intercooler
Intake Manifold: Stock
Headwork: Stock
Engine Management: MS3e
Other Spoolin' Helpers/Hurters: EBC
Trans & Rear End Ratio: 6Spd/ 4.1
Rear tire size: 225/45/15 RS3

5th GEAR PULL

RPM/PSI

2016 .09
2199 2.8
2438 3.3
2652 4.1
2860 5.0
3010 5.7
3250 8.1
3450 9.6
3563 10.9
3675 11.9
3802 12.8
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Old 01-02-2017, 05:38 PM
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Engine: 05' 1.8L VVT
Turbo: Garrett sr20 T25
Manifold: Flyin' Miata cast manifold
Downpipe Size/Style: Flyin' Miata elbow & downpipe
Exhaust Size: 2.5" Magnaflow 12576
Intercooler Core Size: 19.5"x6"x2.5" (CXRacing)
Charge Piping: Flyin' Miata 2.5" piping kit
Intake Manifold: Stock (Squaretop)
Headwork: none
Engine Management: MS3 Basic
Rear tire size: 205/45R16
Other helpers/hurters: Open Loop EBC, slight uphill.

5th gear (1:1), 4.1 6 speed
PSI RPM
1 1850
2 1900
3 1950
4 2000
5 2160
6 2275
7 2400
8 2500
9 2590
10 2675
11 2750
12 2800
13 2870
14 2950

I can almost feel my rods suffer.
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Old 01-16-2017, 03:22 AM
  #290  
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Engine: '94 1.8
Turbo: Holset HX27
Manifold: Tubular low mount mild steel.
Downpipe Size/Style: 3" bugger all downwards angle
Exhaust Size: 3"
Exhaust Components: Small Magnaflow and then a big Magnaflow
Intercooler Core Size: 550x180x65 (21x7x2.5) 2.5" intercooler piping
Intake Manifold: Stock
Headwork: nil
Engine Management: Link G4+
Other Spoolin' Helpers/Hurters: Honda K20 COPs NGK PFR7B-9 plugs
Trans & Rear End Ratio: 6-speed, 4.1 LSD. Pull done in 5th gear
Rear tire size: 225/45 R15
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Old 01-16-2017, 11:35 AM
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Originally Posted by evel View Post
Engine: '94 1.8
Turbo: Holset HX27
.....
Interested to see dyno.
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Old 01-16-2017, 11:38 AM
  #292  
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Interesting. I hunted for an hx27 for a while. Never came up with one. How much power at that boost level?
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Old 01-17-2017, 03:11 AM
  #293  
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We have a company here in New Zealand called Motorsport Engineering who supplies Holset turbos. They can put a Holset core into pretty much anything, mostly into china chargers after they **** their seals. He also can custom spec turbo's to suit whatever you want.
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Old 01-20-2017, 05:00 PM
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Originally Posted by evel View Post
We have a company here in New Zealand called Motorsport Engineering who supplies Holset turbos. They can put a Holset core into pretty much anything, mostly into china chargers after they **** their seals. He also can custom spec turbo's to suit whatever you want.
So 250whp in American power. I have no idea to read that torque units.
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Old 01-20-2017, 08:22 PM
  #295  
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Originally Posted by Lexzar View Post
So 250whp in American power. I have no idea to read that torque units.
Dynapacks like to plot the torque at the axle, if you want it at the crank divide by the total gear ratio (probably 4.1, assuming the pull was done in the 1:1 gear).

--Ian
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Old 01-21-2017, 10:18 PM
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The way the tuner said the dyno works out torque is the torque at the wheels divided the diff ratio then times 1.1 for drivetrain loss. So you end up with 262FtIbs
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Old 02-28-2017, 07:52 PM
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See Also #221 for waste gate only:

Engine: 1999 Stock
Turbo: TD04L-13T
Manifold: Custom Log
Downpipe Size/Style: Segregated 2.5" to 2.75"
Exhaust Size: 2.75" to 3"
Exhaust Components: High Flow Cat & Magnaflow Muffler
Intercooler Core Size: 25 x 5.5 x 2.5
Intake Manifold: Stock
Headwork: None
Engine Management: Megasquirt MS3-Basic
Other Spoolin' Helpers/Hurters: EBC set at 180kPa (12PSI)
Trans & Rear End Ratio: 5-speed, 4.3 LSD
Rear tire size: 195/50-15

FOURTH GEAR PULL:

RPM Boost(psi)
1980 0.4
2000 1.3
2250 5.4
2500 8.8
2750 11.2
2850 12.3

Flat until setting increases at 5K

3rd gear takes to 3250RPM to make 12PSI

Lag RPM's are off due to typical Stock Tach error

At 3240 RPM

Seconds / psi
0 about 20mm vacuum
0.25 0.0
0.45 2.2
0.60 4.1
0.65 5.4
0.75 8.0
0.85 9.7
1.00 11.7
1.06 12.9

At 4460 RPM
0 About 20mm Vacuum
0.20 0.0
0.33 2.8
0.40 5.2
0.54 10.5
0.60 13.4

Last edited by DNMakinson; 02-28-2017 at 08:50 PM. Reason: Added Bolds then added 3500 & 4500 lag
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Old 03-02-2017, 05:47 PM
  #298  
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Engine: '92 1.6 218k miles, untouched
Turbo: Garrett 2554r
Manifold: Flyin' Miata cast manifold
Downpipe Size/Style: Flyin' Miata elbow & downpipe
Exhaust Size: 2.5" catless custom exhaust, copy of stock route
Intercooler Core Size: 19.5"x6"x2.5" (CXRacing)
Charge Piping: full 2.5"
Intake Manifold: Stock 1.6l
Headwork: none
Engine Management: mspnp2
Rear tire size: 205/45R16
Other helpers/hurters: MBC
4th gear on a 5 speed
Kpa PSI RPM
110 1.45 2043
120 2.90 2213
130 4.35 2399
140 5.80 2591
150 7.25 2734
160 8.70 2905
170 10.15 3062
180 11.60 3213
190 13.05 3450
195 13.78 3678

Attached Files
File Type: msl
spool2.msl (83.2 KB, 101 views)
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Old 03-02-2017, 08:24 PM
  #299  
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^ pretty decent on that 1.6.
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Old 03-02-2017, 08:28 PM
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Originally Posted by Ted75zcar View Post
^ pretty decent on that 1.6.
Just installed ebc last night, will log some data this weekend. Exited to see how much E85 improves time as well
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