Naturally Aspirated Performance Forum - RX7Club.com

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Questions on half bridge (2/3 bridge?) series 4 build for GSL-SE

Sk1dmark on Jun 19, 2026

Jun 21, 2026 09:43 AM
by j9fd3s

1

158

Rx8 Front st.gear w/ early thrust bearing/spacer

Holdfast on Dec 23, 2025

May 23, 2026 02:17 PM
by Holdfast

3

586

Help with 160 hp Naturally-Aspirated RX-7 (SA22C) Build

NostalgiaDriver on May 16, 2024

Feb 21, 2026 08:09 AM
by t_g_farrell

5

2,434

FD3S 13B-REW N/A ITB Racecar

Rochhe on Nov 21, 2022

Feb 21, 2026 06:35 AM
by dguy

3

2,557

IDA style manifold tuning

driftxsequence on Sep 1, 2025

Sep 4, 2025 05:03 AM
by driftxsequence

2

1,109

Quad ITBs

bene on Aug 23, 2023

May 26, 2025 11:54 PM
by Furb

22

5,288

13B cosmo full bridge port with custom titanium exhaust

diyman25 on Apr 9, 2024

Feb 13, 2025 09:59 PM
by diyman25

12

3,226

10, 400hp, 58mm, berg, bseries, dyno, engine, gene, honda, mazda, mile, na, pipe, quarter, runs, rx3

k20 vs 13b both na

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1 2 3 4 5 ... Last Page)

ozvazquez on Jan 7, 2009

Jan 14, 2025 04:11 PM
by Death_Star2025

177

67,352

13b Bridgeport with 48mm Weber IDA going rich between 5000-6500 rpm why?

butcheryboy on Jul 10, 2017

Dec 6, 2024 07:47 PM
by fidelity101

9

12,140

Rotor reverse engineering, MDR vs LDR

Kenku on Jul 21, 2024

Jul 23, 2024 05:37 PM
by j_tso

11

1,965

ITB idle issue

sa7 on Jun 22, 2024

Jun 30, 2024 10:10 PM
by fidelity101

5

1,439

Peak Power From Large Streetport 4 Port NA?

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1 2)

tramsey on Jul 5, 2022

May 17, 2024 09:39 PM
by 6italia0

37

10,652

Types of Peripheral Port Housings

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1 2)

j9fd3s on Jun 18, 2022

May 14, 2024 08:10 PM
by TeamRX8

41

18,485

Hybrid Renesis/Wankel NA

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1 2 3 4)

fidelity101 on Jul 27, 2021

Feb 21, 2024 12:03 PM
by fidelity101

80

20,034

13b, cutting, drill, engine, gear, gears, job, mazda, press, removal, remove, retaining, rings, rotor, rx7, tooling

Removing Gears from Rotor

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1 2)

B6T on Feb 19, 2009

Jan 6, 2024 03:40 PM
by user 893453465346

35

11,685

Rotary MX-5 Nordschleife Build Thread

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1 2 3 4)

Kraid on Jan 22, 2018

Dec 1, 2023 08:49 AM
by Howard Coleman

92

44,598

Best rotors for street NA 13B build?

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1 2)

brapbrapbrapbrap on Jul 21, 2023

Sep 12, 2023 08:15 PM
by user 893453465346

35

9,544

Poll

Semi pp or half bridge

Bengman1233 on Aug 18, 2023

Aug 18, 2023 06:05 PM
by peejay

1

2,885

Who makes ITB intake manifolds (13B)?

brapbrapbrapbrap on Jul 23, 2023

Aug 8, 2023 06:29 PM
by 73rx313b

18

7,751

12A and 13B interchangeability?

brapbrapbrapbrap on Jul 21, 2023

Jul 24, 2023 02:56 AM
by Dak

5

6,301

How restrictive is a 60mm diameter exhaust? (NA 13B)

brapbrapbrapbrap on Jul 20, 2023

Jul 23, 2023 09:20 AM
by j9fd3s

10

2,436

12a, 44, carbs, carburetors, club, datsun, engine, found, intakes, mikuni, one, phh, rx3, rx7, rx7club, small

Is two better than one? 12a

Redliner223 on Aug 2, 2012

Jul 4, 2023 06:24 PM
by kirkosaki

14

8,281

13b-rew n/a set-up help (racing)

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1 2)

Rochhe on Aug 24, 2022

May 5, 2023 06:14 AM
by 73rx313b

33

10,264

Racing Beat Peripheral Port Housings?

tramsey on Apr 10, 2023

Apr 13, 2023 09:33 AM
by fidelity101

6

2,074

12a, afr, aspirated, build, dyno, dynos, horsepower, mazda, na, naturally, power, pp, results, rotary, specks

12a PP dyno

gusfd3s on Apr 6, 2011

Sep 9, 2022 08:37 AM
by Rx-7Online

15

12,842

88 rx7 NA starts , high idle then shuts off

RocklinZ28 on May 10, 2022

Jul 13, 2022 05:33 PM
by diabolical1

1

1,141

Street ported 6port vs 4port low to mid power?

Dak on Jun 14, 2022

Jun 18, 2022 09:52 AM
by j9fd3s

4

2,208

RX 8 Injectors in FC which Seals

Imgon on Apr 3, 2022

Apr 8, 2022 09:58 AM
by fidelity101

1

2,030

13b, 20b, beat, dont, emissions, engines, fort, guest, lewis, pass, peripheral, port, pp, racing, semi, semiperipheral, timing

semi peripheral port who has one

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1 2)

jorx7 on Nov 11, 2010

Mar 9, 2022 09:02 PM
by andre sinclair

33

50,899

1988, 87, adaptor, adjustable, fitting, fuel, mazda, pressure, rail, regulator, remove, rx7, s4, size, thread, turbo

Adjustable Fuel Pressure Regulator for S4

The_Fox on May 10, 2012

Dec 13, 2021 07:42 PM
by Cardinell

11

26,545

90, bad, cat, delete, exhaust, fc, fc3s, hks, mazda, na, performance, pipe, rx7, rx7club, set, sounding

Best Exhaust for N/A FC

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1 2 3)

McCarthy on Jul 30, 2008

Dec 10, 2021 10:17 AM
by Dak

59

64,804

Custom roadster with 5 letter 13b - which FI?

alfisti on Nov 30, 2021

Dec 2, 2021 07:53 PM
by peejay

5

1,338

Where to find out about stock ECU

kabz on Jul 5, 2021

Jul 11, 2021 09:54 AM
by j9fd3s

2

1,280

13b, 6k, 91, breakup, fc, fixed, ignition, leading, msd, picture, plugs, recommended, rotary, rx7, spark, trailing, waste

13B PP Ignition breakup

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1 2 3 4 5 ... Last Page)

Rub20B on Jun 6, 2012

Jun 20, 2021 05:28 PM
by Rub20B

150

76,692

12, 13b, 230hp, efi, hp, injector, intake, large, port, porting, rx7club, rx8, small, street, streetport, turbo, upgrade

High horsepower street port

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1 2)

Keeble on Apr 5, 2012

Apr 13, 2021 04:28 PM
by brianguy

46

38,298

Dual 38 DGMS

Whizbang on Dec 13, 2020

Dec 13, 2020 09:04 PM
by Whizbang

0

1,171

13b, 20b, engines, hogans, housing, injector, manifolds, mazda, na, peripheral, port, rotary, rotor, rx7, semi

my semi-peripheral project

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1 2 3 4)

diabolical1 on Jun 11, 2009

Sep 14, 2020 01:24 PM
by TeamRX8

86

47,490

RX8 rotors in s4 keg

Andres Rodriguez on Mar 16, 2020

Sep 3, 2020 11:11 PM
by peejay

9

6,164

PP Locations

fritts on Mar 6, 2018

Aug 31, 2020 09:43 AM
by j9fd3s

11

3,396

13b, a13b, bridgeport, change, fuel, injector, injectors, na, rotary, rx7, series, size, sizes, stock, wideband

which injectors for my n/a 13b

Screamin FC on Feb 26, 2013

Jun 5, 2020 11:20 PM
by RollinHeavy

6

16,952

1008254, 12a, 36, 3636, bestykning, bridgeport, carb, carbs, carburetor, dcd, manifold, rotary, rx7, twin, work

using 36/36 DCD instead of the famous 28/36?

Furb on Aug 14, 2012

Mar 31, 2020 02:27 AM
by Furb

10

6,850

10000, 60s, boost, coil, coilswill, d585, gm, haltech, hold, ignition, ls2coils, rpm, rx7, rx8, signal, test

the coil thread

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1 2 3 4)

j9fd3s on May 15, 2013

Mar 20, 2020 09:34 PM
by gxl90rx7

88

56,035

Highest compression setup?

Mazdarian on Apr 9, 2019

Feb 8, 2020 08:20 PM
by pknoutrx2

14

14,326

turbo intake for n/a use

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1 2)

1st_gen_rx7 on Aug 12, 2018

Nov 26, 2019 12:05 PM
by SirCygnus

40

15,455

And now for something completely different

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1 2)

peejay on Oct 10, 2018

Oct 26, 2019 09:07 AM
by peejay

49

10,893

Suzuki gsxr flat slide carbs on a 13b ?

mattallac on Jul 25, 2019

Oct 23, 2019 10:03 AM
by fidelity101

13

8,117

Thinking about staying N/A for a while

hkp on Sep 24, 2019

Sep 26, 2019 09:37 AM
by j9fd3s

9

3,667

NA Dyno charts - please post

RSD on Sep 10, 2019

Sep 10, 2019 08:44 PM
by RSD

0

3,845

Carbon Apex Seals

fidelity101 on Jul 15, 2019

Jul 17, 2019 04:48 PM
by peejay

6

5,541

ignition timing

wongfei on Jun 19, 2019

Jun 26, 2019 09:43 AM
by j9fd3s

4

9,499