Engine Stud Kits

Mazdatrix Home Page Click part number for price View Cart

 

Oversized Chrome Moly Kits

The High Strength Oversized stud kits eliminate the need for doweling the engine block on high boost race engines. All studs act as dowels which massively increases torsionial strength by over 70%. Rotor housing deflection is reduced and apex seal life increases. Less material is machined from the housings and plates than with doweling, reducing the possibility of cracking. High boost engine expansion is reduced. Studs are less prone to stretching under high boost applications than bolts, and they maintain torque more accurately than bolts. High quality 12-point nuts rated at 180,000 PSI tensile strength. Studs manufactured from 4140 chrome moly, heat treated, centreless ground and black oxided. Engine must be accurately drilled, reamed and tapped to give 0.2mm clearance. Includes 16 studs, nuts and sealing washers. Does NOT include/need the two at the bottom of the "legs" closest to the oil pan.

*Note: The standard factory manual flywheel cannot be used with the Stud Kit.
13B-STUDKIT-OS
20B-STUDKIT-OS
The 20B stud kit includes 2x 11" studs that go from the rear iron to the #2 iron, 9x 17 3/8" studs that go from the rear iron and thread into the front iron, and 5x 19" studs that go clear through the motor and use a nut front and rear (These 5 replace all 5 factory 10mm bolts that went from the front to #2 iron). The two stock 12mm bolts that go from the front iron to the #2 iron are re-used, as are the two long bolts at the very bottom of the "legs".

 

Titanium Stud Kits

Titanium studs are half the weight of steel studs. For those of you who are concerned with weight, this is a significant weight savings for minimal cost. Kits are available for 13b and 20b in a couple different versions. All kits supplied with titanium nuts and washers. As with the chrome-moly kits above, an aftermarket flywheel must be used with all stud kits.
  13b Standard 10mm Kit (Non-Turbo Street or Race Applications) 13B-STUDKIT-TI  
13b Race Oversize Kit (Turbo Street/Race Applications)
18 Studs total, including 6 12.7mm Oversize studs with 10mm threads
Housings must be drilled/reamed for 12.7mm, but the front housing does not need to be tapped.
13B-STUDKIT-TI2
13b Extreme Race Kit
18 Studs total, including 6 12.7mm Oversize studs with 1/2" threads
Housings must be drilled/reamed for 12.7mm, the front housing must be drilled and tapped.
No Longer Available
20b Street/Race Kit
Replaces all the engine bolts with titanium studs. Titanium nuts and washers included. Total 25 studs with Nuts and Washers. No Drilling/tapping required- all studs are stock diameter.
20B-STUDKIT-TI

 

Service Labor for 12.7mm Engine Studding
2-rotor Engine Stud Millling SV-MILL-13BSTUD
3-Rotor Engine Stud Millling SV-MILL-20BSTUD

 

Installation Instructions Click Here

 

Mazdatrix Home Page Click part number for price View Cart