Internal Engine

The Atkins Oversize Bolt Kit is designed to increase the structural integrity of the 13B engine under high horsepower applications.

The rear, center, and both rotor housings need to be drilled out with a 1/2" drill bit (not provided) to allow the oversize bolt to pass through. The front side housing needs to be drilled as well as to be tapped with the provided drill and tap.

At a bare minimum you will need a drill press to complete this task, the bolt holes in the front cast iron need to be straight and true, or the bolts will not thread when the engine is ready to be closed.

A tap drill and bottom tap are provided to re-tap the front side housing, remember to use sound practices when tapping any holes.

Five heat treated grade 10.9 bolts with a 12mm (M12x1.25mm) shank provide much more tensile strength and do not stretch like the stock tension bolts. Five tension bolt seals are also included to seal the bolts to the block.

This was designed by David Atkins and has been patented.

This is an excellent upgrade to any engine. These are desirable under high boost or nitrous applications.

This is a one piece corner seal. Can be used in place of the 2 piece design with plug. Can be used with the wire type corner seal spring or the 93-95 HP wafer type spring. The 93 Style spring is recommended.

Mazda basically copied our design with the Rx8, getting rid of their faulty rubber corner seal plug and opting for a steel one basically making their corner seals solid like these.

Do not use these with lapped side housings.

Fits 1986-2011 Rx7 & Rx8 models, doesn't work for rx7s before 1986.

The factory thermal pellet acts like a thermostat for the oil system. When the oil is cold it does not allow full flow to the rotors for cooling, only enough for the bearings. As the oil warms up it allows more & more oil to flow. When this fails, it does so in the cold mode, thus not allowing oil to fully flow to the rotors, which overheats them and causes damage to the oil control rings. This does not increase oil pressure.

"For off road use only."

When the factory thermal pellet starts going out the thing clients comment on the most is excessive oil smoke at start up, which tends to go away as the car warms up and the catalytic converter cleans up the exhaust. Some people even notice the oil pressure being slightly lower.

Our replacement pellet keeps the engine oil in warm mode so that oil is always flowing to the shaft thus fixing the problem of the faulty factory thermal pellet.

We don't know who started the rumor on the internet that this increases oil pressure, but it does not, for that you would need something like our increase oil pressure kit.

Fits turbo & non-turbo.

Instructions for installation of the thermal pellet.

For off road use only....

Front Hub Bolt Torque Specs:

(12) Patented 3mm Solid Corner Seals, for use on all 12A and 13B 3mm applications.

This is an excellent upgrade to any engine. These are desirable under high boost or nitrous applications. This was designed by David Atkins and has been patented.

This is a one piece corner seal. These can be used in place of the 2 piece Mazda corner seals with plugs. Can be used with the wire type corner seal spring or the 93-95 HP wafer type spring, which is recommended.

Mazda basically copied our design with the Rx8, getting rid of their faulty rubber corner seal plug and opting for a steel one basically making their corner seals solid like these.

Do not use these with lapped side housings.

Three window main bearing for more oil flow.

Competition Race Main Bearing

Fits all rotary engines from 1971-1991, also fits automatic Rx8s from 04-11.

Mazda Competition # 4801-10-502

Racing Beat # 11114

Competition Rotor Bearing has approximately .04" deeper oil grooves and provide approximately .0005" more clearance than stock bearings.

Use on any rotary engine from 1974-1991, and automatic/low power Rx8s.

Detailed images show competition and stock bearing so you can see the difference.

(12) Mazda Corner Seal Springs, will fit any rotors from 1974-2011 Rx7 & Rx8, a nice upgrade from the earlier wire style corner seal springs.

Will fit any 2mm or 3mm applications.

N3H1-11-C24B

Fits all rotary engines.

One High Flow Competition Eccentric Shaft Oil Jet. If the stock eccentric shaft is being used in a high rpm engine, replace the stock oil jet check ball and spring with a Weber #200 carburetor air jet (part #77401.200).

The Weber jet is simply pressed into the back of the this oil jet. This modification is not recommended for engines that will see any street use as it will lower your oil pressure.

If using this modification you will need to increase oil pressure with a competition rear oil pressure regulator and shim your front oil pressure regulator spring.

Fits all rotary engines.

Two Competition Eccentric Shaft Oil Jets & Weber Jets

This modification is not recommended for engines that will see any street use as it will lower your oil pressure.

If using this modification you will need to increase oil pressure with a competition rear oil pressure regulator and shim your front oil pressure regulator spring.

04-11 Atkins Designed Competition Renesis Rx8 Apex Seals

All of our apex seals are heat treated.

The material for these seals has been developed by David Atkins over his extensive racing career in order to exceed stock apex seal life and durability.

These are designed to take more abuse then stock apex seals, these are competition aftermarket Apex Seals.

See below for apex seal specifications.