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[Datsun 1200 encyclopedia]

FJ engine swap

Revision as of 09:09, 15 January 2019; view current revision
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Categories: Engine Modifications | Engine Swaps | Nissan Engines

The F20DET engine was basically a detuned race engine, a bit heavy but possibly Nissan's strongest ever engine. The stock engine can take massive boost and survive, while turning out incredible horsepower. Originally designed as the FJ24 for use in 240RS racing cars, it was in mass production as the FJ20 engine fitted to the DR30 Nissan Skyline. The FJ engine is very heavy at 366 lbs, heavier than the 318 lb Rover V8 Engine/Buick V8 3.5 liter engine. The FJ engine was produced in three variations: 1) FJ24E 2) FJ20E 3) FJ20ET.

Contents

Overview

For general information, see: http://fj20.com

The mighty FJ20E makes 148 HP from 2-liters, and with a turbo the FJ20ET makes up to 203 HP in stock form.

PRO12T
579.jpgAlbum 579

FJ20ET Turbo
400px-FJ20ET.jpgWIKI click for photo

Although it is heavier than a GM 3800 V6, the FJ fits somewhat better into a 1200's engine bay. It looks most excellent, doesn't it?
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Sources

FJ Engine Source:

  • 1982-1983 Nissan Silvia BS110 '240RS' 240 HP, Works 275 HP
    400px-Nissan_Silvia_S110.jpgWIKI click for photo
  • 1983-1988 Nissan Silvia S12 FJ20E 150 PS, FJ20ET 190 PS, FJ20ET inter-cooled 205 PS
    400px-Nissan_200sx_SE.jpgWIKI click for photo
  • 1982-1985 Nissan Skyline DR30 '2000RS' FJ20E 110kw
    3322.jpgAlbum 3322
  • 1983-1984 Nissan Skyline DR30 '2000RS Turbo' or 'RS-X Turbo' FJ20ET 140kw
  • 1984-1985 Nissan Skyline DR30 'RS-X Turbo C' FJ20E 151 kw
    400px-LD4C4288.jpgWIKI click for photo 400px-LD4C4250.jpgWIKI click for photo

Which is better? FJ20 or SR20?

Both:

  • make about the same HP in stock form (SR20DE 140-169HP, F20E 148 HP)
  • In turbo versions, both are too large for as 1200 (too large for normal engineering process) in Australian. In this country, the CA18DET is better than SR20DET or FJ20ET for street cars.

FJ20DET

  • In stock condition, can take more boost than SR20DET, thus more HP without opening the engine up


SR20

  • Much lighter, so won't be as detrimental to handling
  • More were produced, so prices are lower


Build-Ups

  • FJ20 has all the usual build-up parts, same as SR20. However as less FJs were produced, so too the market for FJ parts is more expensive than SR parts.


FJ-powered 1200s

White FJ20 1200 Ute

2011 DATNATS
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YAW871
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OFJ020 "SLUG" at 2008 SUMMERNATS
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SLUG at 2010 Powercruise 23
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34 PSI

Pooley's POST 34 PSI
Resizeoffjute2.jpg fjute.jpg

FJ1200

Santo Di Pietro's ute out of New South Wales with FJ power.

Fast Fours November 2014
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Hot4s 257
Hot4s-257-2b.jpg 26540.jpgAlbum click to view 26541.jpgAlbum click to view

Sandy's fj1200
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FJ1200
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HYP014

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Joshh

Main forum: Joshh's FJ20et 1200 ute

FJ2020 on Simmons FR
Jason1b.jpg Jason2b.jpg Jason3b.jpg

FJ2020 on Convo rims
post-21145-1224492028870042089.jpg post-21145-12244926481162724260.jpg post-21145-1224492236759208526.jpg post-21145-122449203635452681.jpg post-21145-12244920306959542.jpg

Montery Park

OldDatsunsScans006a.jpg

Pink Ute

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Stanek

Paul Stanek's IPC Turbo Charging B110 Coupe
73727E831712771FAEA87B00862BF375.jpg 5366D320FC9C98DA9087C06CE3269CE1.jpg

SuPeR

POST SuPeR's ute
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TIG20T

Main: TIG20T
580.jpg

TUF120

POST TUF120
post-209-1229235530122510236.jpg post-41355-1235745893325587072.jpg post-209-12292354781993449952.jpg

YAQ70Z

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YFJ20T

FJ-powered wagon 'YFJ20T'
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FJ-powered B210

Graeme Adair

FJ20 twin carbed 120Y coupe race car
174_5a03e9213b19a.jpgPost 486691 174_5a03e925caa74.jpgPost 486691 174_5a03e92cb5199.jpgPost 486691 174_5a03e9441ffa2.jpgPost 486691

Sleeper 120Y Sedan

Sleeper 120Y 'YAF49U' spotted at 2005 South Coast Nationals
Sleeper.jpgPost click for topic Sleeper1.jpgPost click for topic SleeperDatto.jpgPost click for topic

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Y Be Normal Coupe

Y4's FJ-powered B210 'QLS216' NSW: Y Be Normal! -Datsun 120y (As Featured in Hot 4's No.27)

120Ys were a bit of a lemon, but the only lemon thing about this one is the paint

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  • EXTERIOR: Lemon yellow tinter paintwork, 15x8" Dragway Carma wheels and 205/50 tyres
  • INTERIOR: Maxrob steering wheel, Razo pedals and autometer gauges, 3 tone retrimmed velour interior
  • ENGINE: FJ20ET turbo

3448.jpgAlbum 3448 3451.jpgAlbum click to view 3450.jpgAlbum click to view

FJ-powered B310

datman55's FJ20T in Datsun B310

183hp at the rear wheels with 850lb of torque, at 6,000rpm with a 36mm restrictor and 15 psi boost
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more photos

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Dry sump FJ
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Fire Rings
4896.jpgAlbum 4896 9793.jpgAlbum 9793

510 Swaps

11120_49e67a0ff2d8a.jpgUpload click to view 11120_49e67a195c1f0.jpgUpload click to view 11120_49e67a2307c39.jpgUpload click to view

PRO 510 in Australia
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11120_49e67a8cd5acd.jpgUpload click to view 11120_49e67a9a45c60.jpgUpload click to view 11120_49e67b447298f.jpgUpload click to view 11120_49e67f66cde6a.jpgUpload click to view 11120_49e67f87add4d.jpgUpload click to view

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Swap Notes

Distributor

The FJ distributor uses Nissan Optical CAS for EFI computer signaling. See FJ CAS.

If converting to carbureted, use a standard distributor. The distributor from a Datsun A12 engine fits into the FJ20 engine block, but you need to change drive gear from A12 to FJ20 drive gear.

If the distributor is missing, use an A12 Datsun or Austin mini distributor. An A12 electronic ignition distributor is preferred so you can use the output to an aftermarket ECU.

22100 DISTRIBUTOR ASSY
R30 (8108-9003) FJ20E & FJ20T
22100-R2000 8110-8206 ハーネス L=410 MM [FJ20E only]
22100-R2007 8206-8308 ハーネス L=580 MM マイナー マ デ
22100-R2001 8308-8601 Hitachi マイナ ゴ センヨウ
22100-R2002 8601-8612 Hitachi
22100-R2003 8612-9003 Hitachi

22100-R2007 DR7 type
FJ20Opticaldistributor001.jpg

FJ20 timing plate
FJ20_timing_plate.jpg

Photo Index

Click any thumbnail to see it full size in our Club Photo Album. Read details or post a comment!

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