Arthur3328

iTrader: (4)

hey guys just bought an fb with a seized 12a. car is in good shape.
I have a N/a 13b ported and all sitting in my garage. Do i need anything special to make it run? i have a megasquirt as ecu as well?

cfamilyfix

iTrader: (15)

Ummm lets see...a search will turn up bountiful results. If you are running a early 4port 13b you may just have to notch (slot the hole?) in the motor mounting point to accomodate the longer leangth of the 13b. It will bolt up to the trans. If it is a later 13b, you need the 12a style front cover, as well as the 12a oil pan. In addition the exhaust will need to be modded a bit and you will need a 13b specific manifold/header. Carb or FI is up to you...obviously a lot more will go into FI if you choose to go that way...fuel pump etc...

DcinPa

If we choice to run FI on this car can we keep the stock gas tank ( GSL ) can we just run an external fuel pump?

82FanTC

iTrader: (9)

Keeping the stock gas tank is fine and using an external fuel pump.

Also you need an oil pan from a 13b GSL-SE. One from a 12a will not work.

You can use a front cover from either a 12a or GSL-SE 13b

Arthur3328

iTrader: (4)

Alright awesome man! Thank you for the info!

OneRotor

iTrader: (3)

Make sure that you can't just ATF or MMO the motor to free it up. If it's just sat for a few year, and wasn't abused (causing the seizing) you will probably be able to get that 12a running.

cfamilyfix

iTrader: (15)

Also you need an oil pan from a 13b GSL-SE. One from a 12a will not work.

Yes...sorry about the mis info....it would be a neat trick to fit a 12a pan on a 13b engine...lol

RX-7 Chris

iTrader: (19)

if it is an S4 motor and you plan to use the stock OMP than you will need an SE 13B front cover.

Arthur3328

iTrader: (4)

So far I have a front cover from a 13b GSL-SE... So as of right now im looking for a GSL-SE oil pan.. Thanks for all the info guys!