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DIY Turbo Discussion greddy on a 1.8? homebrew kit?

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Old 07-29-2017, 04:50 PM   #321
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Stock 2000 miata with FM setup from Manifold back.
2.5 exhaust with cat. Fab9 vibrant 'stage 1' intercooler. Running stock timing map from brain's basemap.
Turbo is a SR20 modified to a '2560'. FM manifold was modified with a tial EWG (by thirdgen).

-Make sure boost cut was set up for 12 psi
-Disconnect wg line
-Do a 4th gear pull starting at ~2k rpm

Started at TPS of 3.2, psi -12.2 and 1687 rpm.

0 PSI : 1771 RPM at TPS 38.3
1 PSI : 1886 RPM at TPS 100 (first reading at 100 TPS)
2 PSI : 2105 RPM
3 PSI : 2174 RPM
4 PSI : 2370 RPM
5 PSI : 2551 RPM
6 PSI : 2742 RPM
7 PSI : 2883 RPM
8 PSI : 3005 RPM
9 PSI : 3102 RPM
10 PSI : 3200 RPM
11 PSI : 3253 RPM
12 PSI : 3349 RPM
/Boost cut @ 12

Should I do this again and start when holding the 'boost' at about atm pressure with the throttle? In any event, this doesn't seem too bad.



Log here: https://www.miataturbo.net/build-thr...5/#post1430616
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Old 09-26-2017, 12:52 AM   #322
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Engine: Trackspeed Stage 2 VVT longblock (8.6:1 83.5mm Supertechs)
Turbo: EFR6758 0.64a/r
Manifold: Trackspeed EFR T25
Downpipe Size/Style: Trackspeed EFR 3"
Exhaust Size: 3"
Exhaust Components: 3" Enthuza metal cat + catback
Intercooler Core Size: Precision 350hp
Intake Manifold: EUDM Squaretop
Headwork: OEM
Engine Management: MSLabs MS3 Basic
Other Spoolin' Helpers/Hurters: CA91, GM D585s, 3.636:1s

FIFTH GEAR PULL: (equivalent of a 4th gear pull in a 5-speed car)

RPM Boost(psi)
2023rpm 0.1psi
2060rpm 1.0psi
2152rpm 2.0psi
2268rpm 3.0psi
2404rpm 4.1psi
2536rpm 5.0psi
2621rpm 6.0psi
2720rpm 7.0psi
2811rpm 8.0psi
2911rpm 9.0psi
2988rpm 10.1psi
3079rpm 11.2psi
3135rpm 12.1psi
3218rpm 13.1psi
3263rpm 14.2psi
3304rpm 15.1psi
3370rpm 16.0psi
3420rpm 17.0psi
3484rpm 18.4psi
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Old 11-21-2017, 11:50 AM   #323
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Engine: '96 (8.6:1 Supertechs), Crower forged rods
Turbo: GTX2867R 0.86a/r IWG
Manifold: Artech Tubular Top Mount
Downpipe Size/Style: Artech 3"
Exhaust Size: 3"
Exhaust Components: 3" MKTurbo Magnaflow
Intercooler Core Size: Medium-sized Ebay junk, I'll measure and insert info here later
Intake Manifold: stock '96 NA8
Headwork: Ported by Miata2fast, small stock NA8 cams, hyd lifters
Engine Management: MSLabs MS3 Basic
Other Spoolin' Helpers/Hurters: Skunky2 TB, Air filter mounted right on turbo for hot air intake, GM 585s, 3.636:1s,

FIFTH GEAR PULL: (equivalent of a 4th gear pull in a 5-speed car)

RPM Boost(psi)
1900rpm 0.4psi
2000rpm 1.0psi
2200rpm 1.7psi
2400rpm 2.3psi
2600rpm 3.0psi
2800rpm 3.7psi
3000rpm 4.2psi
3200rpm 4.8psi
3400rpm 5.4psi
3600rpm 6.0psi
3800rpm 6.8psi
4000rpm 8.6psi
4200rpm 9.9psi
4400rpm 12.1psi
4600rpm 16.0psi
4800rpm 18.6psi
5000rpm 20.3psi
5200rpm 21.1psi
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Old 11-21-2017, 11:53 AM   #324
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Thanks Six! Super informative for me.

do you have a VD by any chance?
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Old 11-21-2017, 12:27 PM   #325
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Quote:
Originally Posted by Ted75zcar View Post
Thanks Six! Super informative for me.

do you have a VD by any chance?
Uh, nope. Clean bill of health.
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Old 11-21-2017, 12:29 PM   #326
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Quote:
Originally Posted by sixshooter View Post
Uh, nope. Clean bill of health.
nice, good to hear.

very curious to know if you get the typical tq fall-off after say 5kRPM with that turbine housing and ex combo.
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Old 11-21-2017, 12:58 PM   #327
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Next time I'm at my computer I will upload that particular log
Attached Files
File Type: msl 2017-04-09_10.03.08.msl (569.9 KB, 2 views)

Last edited by sixshooter; 11-28-2017 at 08:58 AM.
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Old 11-21-2017, 03:23 PM   #328
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Quote:
Originally Posted by sixshooter View Post
Next time I'm at my computer I will upload that particular log
sweet, thanks!
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