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Description Notes Part Number
WPC Treatment WPC is a proven treatment process that has been used for many years in Japan by physically changing the surface of parts, creating a harder more durable product. Click Here
Clean Oil Cooler Ultra sonic cleaning of OEM Mazda oil cooler. Highly recommended when rebuilding an engine and after any bearing failure. SV-SONIC-COOLER
Street Port 74-85 4-Port *Increases port timing and flow for better higher RPM power. Includes four intake and two exhaust ports. Does not include price of housings or lapping.
Example at: 74-85 12A / 13B 4-Port Street Porting
SV-PORT-S4P
Street Port 84-92 6-Port Non-turbo *Includes six intake and two exhaust ports. Does not include price of housings or lapping.
Examples at: 86-92 Non-Turbo Street Porting
and: 84-85 13B 6-Port Street Porting
SV-PORT-S6P
Street Port 86-95 Turbo Engines *Increases port timing and flow for better higher RPM power. Includes four intake and two exhaust ports. Does not include price of housings or lapping.
Example at: 86-95 Turbo Street Porting
SV-PORT-STB
Street Port Renesis Engine *Increases port timing and flow for better higher RPM power. Includes six intake and four exhaust ports. Does not include price of housings or lapping. SV-PORT-REN-SP
Street Port - Intake Only *Includes four intake ports only (does not apply to 6-port engines), does not include price of housings or lapping. SV-PORT-SINT
Street Port-
6-port Intake Only
Includes 6 intake ports only. Does not include price of housings or lapping. SV-PORT-SINT-6P
Street Port -
Turbo Intake only
*Includes four intake ports only. (For 87-95 Turbo engines only) Does not include price of housings or lapping. SV-PORT-SINT-TB
Street Port - Exhaust Only *Includes two exhaust ports only, does not include price of housings. This porting will only be done on new rotor housing supplied by MAZDATRIX, or on excellent condition housings supplied by the customer.(We do not port 86-92 non-turbo rotor housings, see: 86-92 6-Port Exhaust) SV-PORT-SEXH
Street Port-
Turbo Exhaust Only
*Includes two exhaust ports only. (For all 87-95 Turbo engines) Does not include price of housings. SV-PORT-SEXH-TB
Standard Bridge Porting *Adds large second intake port at rotor. Very poor low-end response, marginal midrange, power is 7500 RPM and up. Not recommended for street driving. Retains water inner "O"-Ring at intake port area. Includes all intake and exhaust ports. Does not include price of housings. Done on new rotor housings only, supplied by MAZDATRIX. Requires carbon apex seals.
See: Bridge Porting
SV-PORT-BRIDGE
Big Bridge Porting *Adds larger second intake port at rotor. Very poor low-end response, marginal midrange, power is 7500 RPM and up. Not recommended for street driving. Removes water inner "O"-Ring at intake port area. Includes all intake and exhaust ports. Does not include price of housings. Done on new rotor housings only, supplied by MAZDATRIX. Requires carbon apex seals.
See: Bridge Porting
SV-PORT-JBRIDGE
Peripheral Ports *Requires peripheral port rotor housings, special filled intake ports in front, center, and rear housings, carbon apex seals, special intake and exhaust manifolds, etc. CALL FOR QUOTES
Lapping Anytime an engine is disassembled, the front, center, and rear housings should be lapped flat to remove all wear grooves. Price is per surface - four required per engine. SV-LAP
Rotor Side Clearance Required for sustained high RPM engines. Keeps the rotor from contacting the side housings. Includes side cutting of rotor gear. Does not include cost of rotors. Price includes machining on both sides of two rotors. SV-ROTOR-SIDE
Balancing Balancing of the rotating engine assembly parts is usually only necessary for high RPM race engines, or when mixing rotors, counterweights, flywheel, or using lightened rotors. Please call for specifics before sending in your engine parts. Also, you must tell us what apex seals you are using. (Steel, Carbon or Ceramic)

* Parts will be subject to an additional fee if not cleaned and prepared properly before sent.
Also, 10-20% of motors need weight added in order to balance. The addition of mallory metal to a balance will add $70 to the job.

Click HERE for a printable check list.
SV-BALANCE
Water Jacket Modification Increases surface area in rotor housing water jackets for improved engine cooling in the spark plug area. SV-WATER-MOD
Engine Stud Kit Machine Work Mill engine for use with oversize stud kit. (16 studs) 2-rotor Engine SV-MILL-13BSTUD
3-Rotor Engine SV-MILL-20BSTUD
Renesis Engine
(13 studs)
SV-MILL-RENSTUD
Surface Flywheel Should be done anytime a clutch is changed. Done on customer supplied flywheel. SV-FLYWHEEL-SUR

*For Racing Purposes Only - not legal for public street use on pollution controlled vehicles


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