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Note: Timing Belt should only be adjusted when engine is cold with temp of it less than 100 degrees F. Like Spade’s SOHC Upgrades thread, this is a continual work in progress.

I will do a complete walkthrough of the mini-me, including a shopping list of parts, tools needed, how to perform the swap, important things to look out for, what to expect when you finish, and ideas for future modifications.

These instructions are for 92-95 Civic D15B7 DX, LX mini-me’s, but most of the stuff can be applied to CX’s with pistons with reliefs for 4 valves as well. A “mini-me” is an informal name for a D-Series SOHC VTEC head mated to a D-Series SOHC non-VTEC block. I chose to do a mini-me swap after reading up on them and hearing that they put out a fair amount of power for how cheap they are.

You will need to swap wires A12 and A14, and then disconnect wire A13 from the plug at the ECU. To wire VTEC, you will either need some pigtails or you can just run two wires through the firewall, to the ECU, one coming from the VTEC solenoid and the positive wire from the VTEC pressure sensor.

Be sure to ground the negative side of the VTEC pressure sensitive to somewhere on the chassis.

All D ARP Studs Step 1......15ft lbs Step 2......30ft lbs Step 3......62ft lbs Cylinder Head Bolt Thread Size and Pitch.....10mm x 1.25mm Distributor Mount Bolt....17-18ft lbs Flywheel Bolt........87ft lbs Intake Manifold to Cylinder Head Nut..16ft lbs Main Bearing Cap Bolt........47ft lbs(D16A6).......... Gross Lift Stock D16A6.......222/224..194/196........110................333/362 Crane#251-0010.226/228..200/202........107................384/376 Crane#251-0012.232/234..206/208........108................394/386 Crane#251-0014.232/228..206/202........110................394/376 Crane#251-0016.242/244..216/218........110...............

Step 1...18ft lbs(D16Z6 and Y Step 2...38ft lbs(D16Z6 and Y Rocker Arm.. 425/416 D16Z6 Cams Comp Cams and Zex #59100 Adv Duration [email protected] ___Int/Exh__Int/Exh_Lobe Sep_Gross Lift PRI..228........186........111..........285 SEC.232........190........115..........300 VT..256.........215........103..........440 EXH.252........210........111..........400 Comp Cams and Zex #59300 Adv Duration [email protected] ___Int/Exh__Int/Exh_Lobe Sep_Gross Lift PRI..232........190........111..........300 SEC.236........194........115..........310 VT...260........220........107..........455 EXH.268........216........111..........430 D16Y8 Cams Stock D16Y8 Cam Adv Duration [email protected] ___Int/Exh__Int/Exh_Lobe Sep_Gross Lift PRI..211........183........115..........300 SEC.215........187........113..........319 VT...247........217........114..........397 EXH.235........204........110..........370 Crane#252-0010 Adv Duration Duration @ .050 ____Int/Exh__Int/Exh__Lobe Sep___Gross Lift .....214.........186.........108.............319 SEC...218.........190.........106.............327 VT.....258.........224.........106.............423 EXH...238.........210.........114.............386 Crane#252-0012 Adv Duration [email protected] ____Int/Exh__Int/Exh____Lobe Sep__Gross Lift PRI...214.........186..............112...........3 19 SEC..218.........190..............110...........32 7 VT....266.........232..............110...........4 43 EXH..246.........218..............114...........40 6 Rocker Arm Ratio I 1.63/E 1.87 251-0010 Advertise Duration: Int=226 / Exh=228 Duration @ .050: Int=200 / Exh=202 Lobe Separation: 107 Gross lift: 384/376 251-0012 Advertise Duration: Int=232 / Exh=234 Duration @ .050: Int=206 / Exh=208 Lobe Separation: 108 Gross lift: 394/386 251-0014 Advertise Duration: Int=232 / Exh=228 Duration @ .050: Int=206 / Exh=202 Lobe Separation: 110 Gross lift: 394/376 251-0016 Advertise Duration: Int=242 / Exh=244 Duration @ .050: Int=216 / Exh=218 Lobe Separation: 110 Gross lift: 425/416 15/273 (regrind) Advertise Duration: Int=216 / Exh=230 Duration @ .050: Int=190 / Exh=208 Lobe Separation: NA Gross lift: 380/370 148e/273(regrind) Advertise Duration: Int=226 / Exh=230 Duration @ .050: Int=206 / Exh=208 Lobe Separation: NA Gross lift: 376/370 115/273 (regrind) Advertise Duration: Int=240 / Exh=230 Duration @ .050: Int=218 / Exh=208 Lobe Separation: NA Gross lift: 376/370 202/168 (hard weld) Advertise Duration: Int=282 / Exh=286 Duration @ .050: Int=258 / Exh=262 Lobe Separation: NA Gross lift: 406/410 Street A6 SR909 A6 Advertise Duration: Int=272 / Exh=258 Duration @ .050: Int=NA / Exh=NA Lobe Separation: NA Gross lift: 400/392 Race A6 Advertise Duration: Int=272 / Exh=272 Duration @ .050: Int=NA / Exh=NA Lobe Separation: NA Gross lift: 400/400 Stage 4not 100% sure Advertise Duration: Int=282 / Exh=282 Duration @ .050: Int=NA / Exh=NA Lobe Separation: NA Gross lift: 410/410 Stage 5 billet core..a regrind Advertise Duration: Int=NA / Exh=NA Duration @ .050: Int=NA / Exh=NA Lobe Separation: NA Gross lift: NA/NA 260 Profile (regrind) Advertise Duration: Int=260 / Exh=260 Duration @ .050: Int=NA / Exh=NA Lobe Separation: NA Gross lift: 400/400 272 Profile (regrind) Advertise Duration: Int=272 / Exh=272 Duration @ .050: Int=NA / Exh=NA Lobe Separation: NA Gross lift: 425/425 the 260 was designed to be just a stock replacement without having too many aftermarket bolt-ons, where the 272 works better with modifications.

I recommend you have the actual manual in front of you because it includes detailed pictures and diagrams): 1. that is why i have omitted this information from the write-up Making it all work: this is the tricky part as there are a wires that will need to be either rerouted, spliced, eliminated, or disregarded. The throttle body is a possible point of difficulty, the easiest way is to use the Y8 throttle body and y8 IACV on the head.

In order to do this with the y7 wiring harness, you will need to take two spade connectors and connect them to the two prongs on the male side of the IACV connector, the connect these two wires to the three-wire female plug on the y8 wiring harness, being sure to disregard the orange wire.

I recommend and use a AEM Gear,they have the right Cam Gears for 88-95s and 96-00s D16A6 Cams ........................ Advertise Duration: Int=242 / Exh=258 Duration @ .050: Int=NA / Exh=NA Lobe Separation: NA Gross lift: 428/421 270241 Gorilla Advertise Duration: Int=283 / Exh=268 Duration @ .050: Int=NA / Exh=NA Lobe Separation: NA Gross lift: 428/421 specs are from good idle Advertise Duration: Int=NA / Exh=NA Duration @ .015: Int=254 / Exh250 Lobe Separation: NA Gross lift: 402/392 4040x slight lope/turbo Advertise Duration: Int=NA / Exh=NA Duration @ .015: Int=254 / Exh=254 Lobe Separation: NA Gross lift: 402/402 301x rough idle Advertise Duration: Int=NA / Exh=NA Duration @ .015: Int=274 / Exh=260 Lobe Separation: NA Gross lift: 410/402 5045 nos/turbo Advertise Duration: Int=NA / Exh=NA Duration @ .015: Int=274 / Exh=274 Lobe Separation: NA Gross lift: 420/410 2501105 Advertise Duration: Int=234 / Exh=226 Duration @ 1mm: Int=196 / Exh=192 Lobe Separation: NA Gross lift: 364/354 (9.25mm/9.00mm) 2501106 Advertise Duration: Int=245 / Exh=234 Duration @ 1mm: Int=206 / Exh=200 Lobe Separation: NA Gross lift: 384/374 (9.75mm/9.50mm) D Series Cylinder Head ID Codes D15B1 1990 Std D15B1 4sp------PM9-5 1991 Std D15B1 4sp------PM9-3 D15B2 90 LX D15B2 5sp--------------PM3-9 (9/0) stamped rs of code 91 DX D15b2 5sp---------------PM8-12 93 EG4(EDM) D15B2 5sp-------PM3-8 (9/4) stamp D15B7 94 DX D15B7 5sp-------PMS-1 95 DX D15b7 5sp-------PM9-5 D15B (JDM) 92 VTi D15B Auto--- -- P08-1 (9/1)<-- RS of Code D15Z1 92 VX D15Z1 5sp------P07-1 D16A6 88 RT D16A6 Auto------PM3-7 90 Si 5spd---------------PM3-1 90 Si D16A6 5sp--------PM3-4 D16Z6 92 Si D16Z6 5sp------- P08-2 (9/2) stamped on RS of code. Adjust valve clearance to spec on all valves for No. Turn Adjustment screw until a feeler guage slides back and forth with a slight drag.

93 Si D16Z6 5sp-------P08-4 (9/3) stamped on rs of head 93 EX D16Z6 5spd----- P08-4 93 EX D16Z6 5sp-------P08-3 94 EX D16z6 5 spd---- PO8-2 94 Si D16z6 5sp-------- P08-3 94 EX D16Z6 5sp--------P08-4 94 SI D16z6 5sp -------P08-5 95 EX D16Z6 Auto------P08-2 D16Y4 96 GLi D16Y4 5sp........ Up mark on camshaft pulley should be on top, TDC marks should align with cylinder head upper surface or TDC groove should align with pointer on back cover.pic below Step 2.. Tighten lock nut to spec and recheck valve adjustment..

Rocker Arms are made of aluminum and can be damaged if lock nuts are overtightened so be careful. Adjust all valves for Cylinder No.4 Step 5 Rotate crankshaft counterclockwisw 180 degrees(camshaft pulley rotates 90 degrees) Up mark on camshaft pulley should be on the intake side. Ensure crankshaft pulley bolt is tightened to spec Timing Belt Adjustment CAUTION: Always rotate engine in direction of normal rotation(counterclockwise as viewed from front of engine). Rotate crankshaft counterclockwise until No.1 cylinder is at TDC of compression stroke.above pic.

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