The 1,839 cc or 1.8 BP is a DOHC (double-overhead camshaft) variant of the B8, featuring a 83 mm bore and 85 mm stroke and four valves per cylinder. This engine was called 'BP-ZE by Mazda engineers' and featured a forged crankshaft, piston oil squirters, a structural aluminum oil pan with cooling fins, a 7,000 rpm redline, and Variable Inertia Charging System VICS which is activated by a control solenoid at high rpm to increase horsepower in the upper rev range. The engine is a favorite for both N/A and turbo motoring enthusiasts for its robust design, materials and construction.
Brand | Part Number | Description |
---|---|---|
Pistons | ||
Wiseco | wis-K553M835 | 83.50/3.287 Bore mm/Inch, 3.346 / 85 Stroke, 5.236 / 133 Rod Lgth., 8.5-8.8 Comp. Ratio |
Wiseco | wis-K553M84 | 84.00/3.307 Bore mm/Inch, 3.346 / 86 Stroke, 5.236 / 134 Rod Lgth., 8.5-8.9 Comp. Ratio |
Wiseco | wis-K553M845 | 84.50/3.327 Bore mm/Inch, 3.346 / 87 Stroke, 5.236 / 135 Rod Lgth., 8.5-8.10 Comp. Ratio |
Wiseco | wis-K590M835 | 83.50/3.287 Bore mm/Inch, 3.346 / 88 Stroke, 5.236 / 136 Rod Lgth., 10.0-10.3 Comp. Ratio |
Wiseco | wis-K590M84 | 84.00/3.307 Bore mm/Inch, 3.346 / 89 Stroke, 5.236 / 137 Rod Lgth., 10.0-10.4 Comp. Ratio |
Supertech | SUP-P4-MA8350-N4 | 83.50mm BORE (mm), 3.346" STROKE, 5.228" ROD LENGTH, 8.6:1 COMP. RATIO, GNH-8350 RING P/N |
Supertech | SUP-P4-MA8350-P2 | 83.50mm BORE (mm), 3.346" STROKE, 5.228" ROD LENGTH, 9.5:1 COMP. RATIO, GNH-8350 RING P/N |
Supertech | SUP-P4-MA8350-P10 | 83.50mm BORE (mm), 3.346" STROKE, 5.228" ROD LENGTH, 11:1 COMP. RATIO, GNH-8350 RING P/N |
Supertech | SUP-P4-MA84-N4 | 84.00mm BORE (mm), 3.346" STROKE, 5.228" ROD LENGTH, 8.6:1 COMP. RATIO, GNH-8400 RING P/N |
Supertech | SUP-P4-MA84-CR9 | 84.00mm BORE (mm), 3.346" STROKE, 5.228" ROD LENGTH, 9:1 COMP. RATIO, GNH-8400 RING P/N |
Supertech | SUP-P4-MA84-P2 | 84.00mm BORE (mm), 3.346" STROKE, 5.228" ROD LENGTH, 9.5:1 COMP. RATIO, GNH-8400 RING P/N |
Supertech | SUP-P4-MA84-P10 | 84.00mm BORE (mm), 3.346" STROKE, 5.228" ROD LENGTH, 11:1 COMP. RATIO, GNH-8400 RING P/N |
Supertech | SUP-P4-MA85-N3 | 85.00mm BORE (mm), 3.346" STROKE, 5.228" ROD LENGTH, 9:1 COMP. RATIO, SWM31017-0 RING P/N |
Supertech | SUP-P4-MA85-P10 | 85.00mm BORE (mm), 3.346" STROKE, 5.228" ROD LENGTH, 11:1 COMP. RATIO, GNH-8500 RING P/N |
Supertech | SUP-P4-MA855-N3 | 85.50mm BORE (mm), 3.346" STROKE, 5.228" ROD LENGTH, 9:1 COMP. RATIO, SWM31017-2 RING P/N |
Supertech | SUP-P4-MA855-P8 | 85.50mm BORE (mm), 3.346" STROKE, 5.228" ROD LENGTH, 11:1 COMP. RATIO, GNH-8550 RING P/N |
Rods | ||
K1 Technologies | K1T-ZH5234ACCB4-A | 5.234” Mazda H Beam w/ARP2000- Set of 4 |
Pauter | PAU-MAZ-200-480-1330F | Pauter Rods |
Manley | MAN-14011-4 | H-Beam Rods MAZDA MIATA B6/BP - 5.233" Rod Length |
Manley | MAN-14011R6-4 | H-Plus Rods MAZDA MIATA B6/BP - 5.233" Rod Length |
Engine Bearings | ||
ACL | AEB-4B8351H | Race Series Rod Bearings Mazda B6/B6-T, BP/BP-T, ZM |
ACL | AEB-4B8351HX | Race Series Rod Bearings Mazda B6/B6-T, BP/BP-T, ZM |
ACL | AEB-5M8353H | Race Series Main Bearings Mazda B6/B6-T, BP/BP-T, ZM |
ACL | AEB-5M8353HX | Race Series Main Bearings Mazda B6/B6-T, BP/BP-T, ZM |
ACL | AEB-1T8353 | Race Series Thrust Washer Set Mazda B6/B6-T, BP/BP-T, ZM |
Head/Main Studs | ||
ARP | ARP-218-4701 | ARP Head Stud Kit - Mazda Miata |
ARP | ARP-218-5401 | ARP Main Stud Kit - Mazda Miata |
Camshafts | ||
Kelford | KEL-203-B | Stage 2 street cam for mild engines, Adjustable ECU - Normally Aspirated |
Kelford | KEL-203-C | Street or Rally cam, suits mild engine - Normally Aspirated |
Kelford | KEL-203-D | Maximum Race cam for hydraulic lifter engine - Normally Aspirated |
Kelford | KEL-203-X | Custom Camshaft manufactured to your specifications for Mazda MX5/Miata B6 N/A engines - Normally Aspirated |
Kelford | KEL-T203-A | Fast street cam, stock turbo, stock ECU |
Kelford | KEL-T203-B | To suit rally car or fast street applications. Requires turbocharger upgarde and fully programmable ECU. |
Kelford | KEL-T203-C | To suit modified race engines with GT28 or larger turbocharger. Requires fully programmable ECU. |
Kelford | KEL-T203-D | Drag race |
Kelford | KEL-T203-X | Custom camshafts manufactured to you specifications to suit Mazda MX5/Miata B6 Turbo engines |
Springs/Retainer Kits | ||
Supertech | SUP-RET-TS60_MA2 | Supertech Titanium Valve Spring Retainer Kit Mazda Miata 1.8L |
Supertech | SUP-SPRK-1012-M18D | Supertech Dual Valve Spring and Retainer Kit Mazda Miata 1.8L |
Valve Springs (ONLY) | ||
Supertech | SUP-SPR-MM18S | Supertech Valve Spring (Individual) Mazda Miata 1.8 / 56lbs @ 34.20mm / 154 @ 10.50mm lift |
Supertech | SUP-SPR-MM18D | Supertech Valve Spring Kit Mazda Miata 1.8 / 74lbs @ 33.75mm / 177 @ 10.50 mm lift |
Valves | ||
Supertech | SUP-MAIVN-1204 | 33.00mm (std) Black Nitride (hi flo) Intake Valve |
Supertech | SUP-MAIVN-1208 | 33.00mm (std) Black Nitride (std flo) Intake Valve |
Supertech | SUP-MAIVN-1206 | 34.00mm (+1.0) Black Nitride (hi flo) Intake Valve |
Supertech | SUP-MAIVN-1201 | 33.00mm (std) Black Nitride (hi flo) Intake Valve |
Supertech | SUP-MAEVN-1204 | 28.00mm (std) Black Nitrided / Inconel Exhaust Valve |
Supertech | SUP-MAEVN-1206 | 29.00mm (+1.0) Black Nitrided / Inconel Exhaust Valve |
Supertech | SUP-MAEVN-1201 | 28.00 mm (std) Black Nitrided / Inconel Exhaust Valve |
Valve Seals | ||
Supertech | SUP-VS-T6-I | Supertech Intake Valve Stem Seal |
Supertech | SUP-VS-T6-E | Supertech Exhaust Valve Stem Seal |
Supertech | SUP-VS-T6SM | Supertech Intake/Exhaust Valve Stem Seal For Dual Spring Smaller diam. (requires machining of guide tip) |
Timing Kits/Belts | ||
Gates | GAT-T179RB | Racing Blue Timing Belt - 1990-2005 Mazda MX-5 Miata 4-Cyl. 1.6/1.8L |