RB20DE conversion

twincam_gem · tinkerer Joined: 21 Oct 2003 Posts: 57

Has anyone ever had experience with puttin a RB20DE or SR20
in a gemini, How much trouble is there with the engine mounts and engineering?
I currently own a 120KW G200W but am selling it due to lack of parts available in Australia.

I have also been told that a Mazda 13b Rotary will be a pretty easy drop in?

Gene FJ20DET · Posted: Sat Oct 25, 2003 4:46 pm Post subject: Re: RB20DE conversion

rb20 u have to cut ALOT of the fire wall out (alot) and modifiey the tras tunnel and makes some kind of remote shifter or move the whole handbrake asseble back about 6"
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twincam_gem · tinkerer Joined: 21 Oct 2003 Posts: 57

That doesnt sound inviting, Do you know what its like fitting a 13b?

ONLYA4 · petrol head Joined: 12 May 2003 Posts: 1114

I dunno where you are located, but take a look at www.rotoworx.com.au. I would personally get a rotor installed by someone else, HypaTG got quoted $6,000 for a 12B installed.

elky · petrol head Joined: 06 Oct 2001 Posts: 1149

pretty easy to fit a 13B if u use a "off the shelve" crossmember from some of the workshops in nsw and vic, but they mount the motor to far forward and on a angle which blows out uni's sooner i reckon they are not worth it unless u only wanna do skids, most engine conversions i have seen on gems are a bastard of a fit. I chose a 13B PP and did a shitload of work it fit it> custom crossmember, reversed sump, widened tunnel, cut& boxed firewall to clear hydro clutch set up which meant the heater box had to be modded, custom gearbox mounts , shortened gearbox linkages (series 4 turbo 5 speed) custom headers etc lotsa work but worth it. the weight balance is better as well.
cheers