20B FD Qs

[colin777]

right guys im in oz at the moment and found a lovely cosmo 20b turbo engine for a good price. just wondering after i buy engine whata re the next steps and costs in fitting and running it in a fd
prob rebuild it first but ive heard things about getting new sub frames etc etc
just wondering is a really expensive operation and will it eat the fd gearbox or even fit it at all
cheers for any links or info from experiences:Thumbs-up

[trotter]

It will require a bit of mucking about but it\'s far from a rare mod - quite a few have been done.

Use the \'search\' button to look for the build threads - theres at least two on here. The Norwegian one is the most recent

[colin777]

any help with a link or advice lads

[Speedworks]

look for Undefined Autoworks/motorsports in the vendor section of RX7club.com


they have a kit that allows you to mount the 20B with the OEM subframe.The kit only costs about 1400 USD.

You will need to send them (or do it yourself) some of your parts to have them modified.

UIM needs to be cut and lowered to clear the hood,
steering rack needs modification to clear front cover
oil pan needs modfication.

[yehreally]

http://www.mazdarotaryclub.com/forums/showthread.php?t=527&highlight=Autoworks%2Fmotorsports

[FDAsh]

Use the \'search\' button to look for the build threads - theres at least two on here. The Norwegian one is the most recent

That\'s a 4 rotor fella. There\'s a couple of progress threads on FDUK too, Matt and mccarthy are good ones.

[antnicuk]

you will need a lot of custom work, presumably you will be going single turbo (no point otherwise), in which case you need a huge turbo,huge fuel system, huge i/c & Rad, huge clutch (our twin plate let go today on the rollers at 500 rwhp at 0.9 bar), your gearbox wont last long, neither will your diff, exhaust system and turbo manifold will need to be custom made.  ECU, injectors and everything else you would also have on an 13b with a single turbo.  You cant use an apexi either.

Then you have to fit it in the engine bay.  Beware of stuff from the USA, they are LHD so the turbo doesnt foul on the steering column.  The engine will be quite far forward unless you lower it and put it further back in the tunnel, then you have to convert and move the gear lever to be in the right place, chop the prop and modify the power plant frame.

I hope you have deep pockets, you will need them  

[colin777]

rough price figure mate after engine bought? and what ecu do ya have to change to map them

[antnicuk]

i know of 3 but im sure there are more, micrtech, motec, haltec.

its impossible to calculate costs, it varies so much on what you can do your self and what you have to pay someone else to do, what you can fab and what you cant, what power you want,  etc etc.  If you are going to pay someone to do the lot, you are talking lambo money

[DR SCHNITZEL]

Hey Colin have you and Eric won the lottery?? My single is going nice now and its almost too fast. (ie i have nearly died a few times this week and caught by the police)

[colin777]

not won the lotto im in oz and have a good job so would like to send home parts for my car as a project when i get back.
im lookin for 500-600
price im lookin for is just the cost of making it fit the car like subframes etc
excluding upgrading turbos and fueling and diffs/gearboxes etc
just the prep cost to the car to be able to fit the engine

[colin777]

lookin to get rough figures on this before i start
i know what d kit costs from defined autoworks on RX7club.com
$1600 for subframe mounts
$350 for reducing height of intack
after this is paid for what kind of money is needed to finish for a 500hp car
20B longblock = $4000
fresh rebuild/port =
good standalone =
ignition coils =
custom ignition wires =
custom exhaust =
custom intercooler setup =
turbo = £2000
custom oil coolers/lines =
custom radiator =
lightweight flywheel =
upgraded clutch =
upgrade fuel pump =
gearbox =
diff =

just lookin for a rough figure so i dont jump head first into a project too big for my pocket

[BlitzBoy]

I have put these pounds approx figures plus a couple of things you have forgotton.

fresh rebuild/port = £4000
good standalone = £1000 if going Mircotech much more for Motec
ignition coils =
custom ignition wires =
custom exhaust =
custom intercooler setup = £1000
turbo = £2000
Turbo Manifold = £1000
Wastegate = £500
custom oil coolers/lines =
custom radiator = £500
lightweight flywheel =
upgraded clutch = OS Giken Tripple plate includes flywheel £1500
upgrade fuel pump = Twin Bosch 044s £400
Braided fuel lines £200
gearbox = You can use the FD box wont last long go used HKS or Supra Conversion £2000- £4000
diff = Kazz diff £500

[Nik da Greek]

Don\'t forget the custom subframe etc. Like antnicuk says, it\'ll sit far too far forwards and much too high if you leave the rack and mounts etc as stock. You have to make a custom subframe and ideally clearance the firewall backwards so as to fit the lump down and behind the rack, otherwise it ballses up the weight distribution and that. The parts are the tip of the iceberg, it\'s all the one-off stuff and fabrication that\'ll kick you hard in the nuts

[Spartacus]

Better off going V8, backs off quickly before:flamed