kurpluck

Does anyone know what the size and thread for the two nuts on the header to the down pipe on a '85 n/a 12a. Thanks!

DriveFast7

iTrader: (1)

http://www.pineappleracing.com/index...ROD&ProdID=107

Jeff20B

iTrader: (13)

10mm x 1.5. It's a good idea to use stock Mazda exhaust nuts because parts store nuts will be too big on the hex and can gall something aweful.

Siraniko

iTrader: (13)

https://www.rx7club.com/2nd-gen-archive-72/master-list-thread-sizes-2nd-gen-nuts-bolts-367392/

stolen from FC section
Engine / Fuel / Coolant System / Lubrication System

Engine / Tranny Mounts:
(1) 14 mm head - Length = 145mm (5 5/8 in) (with head of bolt)135 mm (5 1/4 in) (from bottom of head of bolt to end of bolt). Nut on opposite end. FINE THREAD
(1) 14 mm head - Length = 100 mm (3 15/16 in) (with head of bolt) 90 mm (3 1/2 in) (from bottom of head of bolt to end of bolt). FINE THREAD
(2) 14 mm head - Length = 45 mm (1 3/4 in) (with head of bolt) 35 mm (1 3/8 in) (from bottom of head of bolt to end of bolt). FINE THREAD
(1) 14 mm head - Length = 40 mm (1 1/2 in) (with head of bolt) 30 mm (1 3/16 in) (from bottom of head of bolt to end of bolt). COURSE THREAD (goes under the starter)

Bottom Motor Mount: 12mm x 1.25 pitch

Pulsation Dampener Banjo Bolt: M12 x 1.25

OMP/MOP: N/A, 10mm x 1.0 bolts
TII, 10mm x 1.25

Oil Pan: M6 x 1.00

Oil Injectors: N/A, M10 x 1.0
TII, M10 x 1.25

Oil Injector Lines: NA: 10mm x 1.25
TII (some) : 10mm x 1.00

Oil Cooler: Front Cover is M16 x 1.5 — Rear of engine and both oil cooler are M18 x 1.5

Oil Feed Line Hole: front cover, 16mm x 1.5 thread pitch,
other three, 18mm x 1.5

Oil pressure sensor: 1/8” BSPT – 28 BSP

Primary Fuel Rail Hold-Down (one of two choices): 10mm, M8 x 1.25 12mm, M10 x 1.25

Radiator Bleed and Drain Plugs: 12 x 1.25 x ~10 long

Housing Tension Bolt: M10 x 1.0

Coolant Bleed Screw: M12 x 1.25



Turbo

S4 Turbo-to-Downpipe: 10mm x 1.5

Turbine Housing to Downpipe (S5): M10 x 1.5 ::: The stud is 53mm long with a 10mm threaded end for the housing side and an 18mm threaded end of the downpipe side.

Turbo Water Line Banjo Bolt: M16 x 1.5

Turbo Oil Line from the top of the front iron on the right via banjo bolt, then runs through that metal line to the turbo oil inlet: M12 x 1.5



Steering/Suspension

Steering Column Knuckles: M8 x 1.25

P/S Rack Lines (two): M12 x 1.25

P/S Rack Lines (third, some models): M16 x 1.50

P/S Banjo Bolt: 10mm fine thread (go into the end of the steering link, from the pump)

Front Differential Mount Studs: M12 x 1.50 (same as lug nuts)

Rear Differential Mount Studs: M12 x 1.25

Swaybar Endlinks: M10 x 1.25

Tie Rod Ends: M12 x 1.25

Front A Arm Mounting Bolts: M10 x 0.25 x 14mm head x 18cm length



Transmission/Clutch

S4 Shifter: M12 x 1.5

S5 Shifter: M10 x 1.25

Clutch Slaves: M8 x 1.0 or M7 x 1.0

Flywheel (wrench needed): 2 1/8" or 54mm

Transmission mount, large bolt on bottom of crossmember: M12 x 1.25

Lower Starter Bolt: M10 x 1.50 x 30mm long

Pressure Plate to Flywheel: M8 x 1.00 x 24mm long



Wheels/Brakes

Wheel Studs: M12 x 1.50

The stock sizes all have an offset of 40mm or 40 ET and are:

14 x 6 w/ 114.3 x 4 bolt pattern (Base, Luxury, 87.5-88 SE)

15 x 6 w/ 114.3 x 5 bolt pattern (GXL, Sport, GTU, 91 coupe)

15 x 6.5 w/ 114.3 x 5 bolt pattern (convertible)

16 x7 w/ 114.3 x 5 bolt pattern (Turbo, GTUs, Infini IV)

Brake Rotor Brass Screws: 8mm x 1.25

Brake Caliper Bleeders: M8 x 1.0 and M7 x 1.0 respectively



Exhaust

O2 Sensor: M18 x 1.50

Exhaust Manifold Flange Where the pre-cats attach: M12 x 1.25

Racing Beat Presilencer: M12 x 1.75

N/A Exhaust Manifold: M10 x 1.25

TII Exhaust Manifold Nut: 10mm x 1.5



Other

Thermostat Housing: M6 x 1.0 , short bolts

Thermostat: M12 x 1.25

Skid Plate: 10mm flanges heads ::: probably a 6mm x 1.0

Large bolt going through UIM into LIM : M8, course thread. Length is about 3-4 inches (thats a quote from Aaron )

S4 Air Intake Sensor: M10 x 1.0

Cold Start Assist Sender: 16mm x 1.5

Spoiler: M8 x 1.25

Storage Bin Mounts: M6 x 1.0

Seats: M10 x 1.25 x 1 inch – Fine thread

CAS lockdown nut: 6mm x 1.0

AFM Mounting Bolts that hold the stock airbox bracket on: M6 x 1.0

According to cluosborne, SAE 7/16/20 (fine thread) bolts can be substituted for the hard to find M11 size used for the seal bolt anchors.

Bolt Info

http://www.tech.plymouth.ac.uk/sme/desnotes/bolt.htm
http://www.roymech.co.uk/Useful_Tab.../Hex_Screws.htm
http://www.tech.plymouth.ac.uk/sme/desnotes/boltb.htm

djessence

archive?

bugman1973

hey i use the pineapple ones they work really well on the exhaust system