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There are alot of different motor swaps for these cars. Before you choose which one you have to think of 2 things, your skills and your money. Skill wise it goes D to B to H to K to J. The last time I wrote this there were 3 main types, The D, B, and H series. Now K is the new B and J's are making their way into the scene due to mount kits being made available by companies like Hasport.
D-Series
The D-series swap is the easiest and cheapest swap in a 4g Civic. They bolt right in and their cheap. There's no need for new axles or mounts but if you don't have an Si a DPFI to MPFI swap is needed unless you keep your stock intake manifold and distributor. It is a very popular swap to put a Z6 or Y8 Vtec head on a D15 or D16 block. Your car had a d series from the factory so you can use all of your stock components. The L3 tranny out of the 4g Si or off the DOHC ZC are what your going to want to use.
B-Series
B-series motors are probably the most popular. Go in pretty easy and their not a slow motor stock. The cable tranys available are S1, A1, Y1, and the YS1. The Y1 is optional LSD and the YS1 is LSD. The S1 and A1 are out of 90-91 Integras, the Y1 is the JDM B16 tranny, and the YS1 is a GsR tranny. You'll need motor mounts. Hasport is definately the best but there are other companies one being HCP. Then your going to need shift linkage. There is adjustable linkage available through Hasport. There is also a company named Avid or you can shorthen 90-93 Integra linkage. The stock throttle cable doesn't work so you'll need it off of a 90-93 Integra. The axles from a 90-93 Integra or custom axles must be used. Dx or Si hubs need to be used. The dust rings also need to be taken off of the knuckles. Also a 90-93 Integra intermediate shaft needs to be sourced to go along with the axles. A large dent must be made in the frame rail, right below the strut tower, for alternator clearance. Last the stock exhaust manifold won't match up. You can either get a cat with adjustable flange, get a custom exhaust, or use your d series downpipe with the b series cast manifold.Vtec needs to be wired in if using a vtec motor.
- A8 Vtec solenoid
- B5 Vtec oil pressure switch
- B19 Knock sensor
- C8 2nd O2 sensor
H-Series
H-series motors require alot of work to get them in and almost require an upgraded suspension because of the increase in weight. This is a pretty expensive swap and definately the most complicated of the b, d, and h series. And in my opinion a waste of time. It throws off the geometry of the car due to the extra weight and the mounts and axles are stupid expensive.
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B series Vtec Motors
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Motor - Vehicle
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Tranny
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Hp - Torque
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CR
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ECU
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OBD_
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89-91 JDM B16a - 89-91 Civic & CRX SiR 90-91 Integra XSi
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JDM S1 J1 Y1 A1 (cable)
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158 hp@7600 112lb-ft@7000
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10.4:1
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Pr3
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OBD0
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92 + JDM B16a - 92-95 Civic Sir
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Y21 S4c (hydraulic)
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168hp@7800 116lb-ft@7300
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10.4:1
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P30
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OBD1
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97+ JDM B16b - Civic Type R
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S80 w/ LSD (hydraulic)
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185hp@8200 118lb-ft@7500
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10.8:1
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PCT
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OBD2
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95+ JDM B18c-R - 95+ Integra Type R
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S80 w/LSD (hydraulic)
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200hp@8000 135lb-ft@7500
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11.0:1
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P73
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OBD2
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96+ JDM B18c
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Y80 S80 (hydraulic - optional LSD)
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180hp@7600 129lb-ft@6200
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10.6:1
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P72
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OBD2
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93-95 USDM B16a2 - 94-95 Del Sol
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Y21 (hydraulic
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160hp@7600 112lb-ft@7000
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10.2:1
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P30
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OBD1
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96-97 99-00 USDM B16a3 - 96-97 Del Sol 99-00 Civic Si
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S4C (hydraulic)
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160hp@7600 112lb-ft@7000
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10.2:1
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P2tT
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OBD2
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92-93 USDM B17a1 - 92-93 Integra GsR
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YS1 (cable)
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160hp@7600 118lb-ft@7000
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9.7:1
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P61
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OBD1
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94-95 B18c1 - 94-95 Integra GsR
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Y80 (hydraulic)
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170 hp@7600 128lb-ft@6200
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10.0:1
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P72
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OBD1
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96+ USDM B18c1 - 96-01 Integra GsR
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Y80 (hydraulic
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170hp@7600 128lb-ft@6200
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10.0:1
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P72
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OBD2
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97+USDM B17c5 - 97 + Integra GsR
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S80 w/ LSD (hydraulic)
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195hp@8000 130lb-ft@7500
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10.6:1
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P73
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OBD3
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B series non Vtec Motors
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Motor - Vehicle
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Tranny
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Hp Torque
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CR
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ECU
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OBD_
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90-91 USDM B18a1 - 90-91 Integra
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S1 Y1 A1 (cable)
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130hp@6000 121lb-ft@5000
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9.2:1
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PR4
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OBD0
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92-93 USDM B18a1 - 92-93 Integra
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YS1? (cable)
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140hp@6300 126lb-ft@5000
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9.2:1
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OBD1 PR4
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OBD1
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94+ USDM B18b1 - 94+ Integra
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S80 (hydraulic)
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142hp@6300 127lb-ft@5200
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9.2:1
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P75
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OBD1-2
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96-98 B20b/B20z
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?
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126hp@5400 133lb-ft@4300
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8.8:1
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?
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OBD2
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99-00 B20b/B20z - 99-00 CRV
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?
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146hp@6200 133lb-ft@4500
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9.6:1
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?
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OBD2
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D series
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Motor - Vehicle
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Tranny
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Hp Torque
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CR
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ECU
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OBD_
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88-91 USDM D16a6 - 89-91 civic Si *8-91 CRX Si 90-91 Civic Ex
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Si L3 (cable)
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108hp@6000 100lb-ft@5000
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9.1:1
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PM6
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OBD0
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88-91 D16a8/a9 - 88-91 Civic & CRX 16/1.6i
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L3 (cable)
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137hp@6800 108lb-ft@5700
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9.3:1
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PM7
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OBD0
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92-95 USDM D16z6 - 92-95 Civic Si and Ex
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? (hydraulic)
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125hp@6600 106lb-ft@5200
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9.2:1
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P28
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OBD1
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96-00 USDM D16y8 - 96-00 Civic Ex
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? (hydraulic)
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127hp@6600 107lb-ft@5500
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9.6:1
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P2P
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OBD2
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