Do you want a 20B Swap in your Rx-8?
 

20B components price breakdown

Component: Price: Comments:

20B engine $4,000 Prices vary, but on average they range between $3,000 - $4,500.

Engine mounts $250 FC3S.Org Cosmo engine mounts for $250.

Flywheel $400 Typical price for lightened steel or aluminum flywheel. Counterweight should come with engine.

Clutch kit $350 ACT Heavy Duty clutch is only good for ~450lb-ft of torque. A mildly modded 20B can easily surpass that.

Turbo exhaust manifold {$700} Optional, but if you're going single turbo, you need to have this custom made.

Turbo, T72 {$1,500} Optional - see above. Price is from Turbonetics. This turbo is good for 600 to the wheels.

Oil/water lines (for turbo) {$200} Optional - see above. Includes prices for SS AN lines and fittings for both oil and water lines for turbo CHRA.

Intake pipe (for turbo) {$100} Optional - see above. Piping and silicone hoses to adapt single turbo to intercooler and for intake going into the turbo itself.

Downpipe $100 Whether you're going single turbo or stock twin turbos, this exhaust pipe is needed to mate with the rest of the exhaust system.

Exhaust system {$800} This might be optional. If you already have a (larger) aftermarket exhaust system, this might not be necessary. $500 average for a good "cat back" exhaust, and $300 added for a pre-silencer section to be made.

Front-mount intercooler $1,200 The GReddy V-spec front-mount intercooler kit is the standard for which all front-mount intercoolers are judges for the FC3S.

Oil cooler lines $200 Typical cost to custom fab a pair of oil cooler lines from any name brand SS AN manufacturer (i.e. Earls, Russells, XRP).

Upgrade radiator $500 Cost of an upgrade radiator and custom radiator hoses to fit the 20B inlet/outlets.

FC3S water pump + housing {$300} Optional - if you can get the 20B water pump system, good for you. If not, we would normally replace the water pump housing and water pump with the stock FC3S units, easily available in the U.S.

MSD coils {$200} Optional - the cheapest option for 6 coils are $35/each from Summit Racing. You can find 3 pairs of FC leadings or 6 individual trailing coils.

MSD DIS-4 {$700} Optional - we would normally run a pair of these to use a "ignitors" in a Haltech install.

Bosch upgrade fuel pump $200 You can use a pair of Walbro 255lph fuel pumps for a little cheaper.
SS fuel lines and fittings $500 -6AN minimum diameter from gas tank to the engine. Includes all fittings to convert to parallel fuel rail system with aftermarket FPR.

SX FPR $200 Required to control fuel rail pressure

Fuel filters $100 You'd be crazy to not run fuel filters. Earls offers a pre-filter and a finer/regular fuel filter at $40/each at Summit Racing.

Haltech E11 $2,000 We recommend Haltechs for all our customers.
Front anti-sway bar $500 We can supply you the front bar if needed.

Just on those estimations, we're looking at a cost of around $10,000 without any of the optional components.
The optional stuff comes out to another $4,500.
Grand total for all components listed would be almost to an even $15,000.
Prices are typical retail, so it's possible to get most of it discounted slightly.

i belive the guys down in PR did it for around $7500 (iirc) by fabbing up a bunch of their own parts.

A 20B N/A renesis, yes... too bad not possible in this life of mine unless I relocate.

yeah, but that's $7500 in PR....if we send our cars down there, it'll be more than $15000...i wonder how much the labor is going to be....

It does not cost anywhere near $7500 to have your car shipped to puerto rico and back.

You can not buy motor mounts that will allow you to just bolt in a 20B into an RX-8. The Cosmo mounts do not line up. You will need to fab this up yourself. This list also assumes that the engine needs no rebuilding and it also assumes that you are going to turbo it. This isn't really even an accurate estimate.

guestimate.

Acosta charges you $8,000.00 for the labor.

this list is shows you what's required to do the swap in a FC or FD cars. but event for a rx-8 the parts for the most part are 95% accurate. but at least those guys wondering how much would it cost for parts this list gives you an idea and that's all.

Don't Kill me guys. :nono:

With all this interest of late perhaps we now need a 20B section just like rx7club.com. Nice list that gives a good idea of the parts and costs involved, keep it going.

I will rather go 20B NA and save on turbo and all those changes and use that saving to rebuild the motor and good street / bridge porting,this will produce very good power as well.
and much easier for change

yeah,

there is an engineering company in New Zealand that do 3 or 4 rotors using 13B housings and 12A / 13B side plates with changes to side housings and custom made shaft, the motor is even shorter due to other shaft, centre housing. a 4 rotor(those shorter 4 rotors) might fit in RX8
we might need a section for 3 rotors and later even 4 rotors ?
oooh lala

787B sound

This is the one you are talking about.

http://www.autotechmotorsports.com/index.htm

4 rotor.
http://www.autotechmotorsports.com/projects-4rotor.htm

yes, we do!

i'm with you 100%

Evil

Evil,

you forget $2,000.00 aprox for a rebuild of course the rebuild cost can change depending on the apex seals you whant................
And as rotarygod said you would need to make your custom engine mounts.
There is other cost as fuel injectors and fuel lines, custom air conditioning pipes, and a lot of fittings...........

but to begin the list you make a great work!

at the end a 3 rotor RX8 is "priceless"

Manuel

and remember for everything alse there is MASTERCARD.......

you bumped your head. they're ok, but nothing special. and they send oil and coolant temps into the stratosphere.