1993 Suzuki GSX-R400 Turbo

Practical Sportsbikes (UK) - - In Your Shed -

Owner: Chris Jen­nings Owned for: four years So far: home-made turbo con­ver­sion What’s next? fi­nal build and setup

Ibought the bike as a frame and en­gine, with the plan to use up var­i­ous parts left over from other builds – I call it the ‘Gixxer Bitsa’. So it has an RG125 front end, an FZR1000 swingarm with an ex­ten­sion added, a Du­cati 600SS rear wheel and caliper, a Ban­dit 400 shock on an SV650 link­age, and a fuel fil­ter from a Massey Fer­gu­son trac­tor. The seat unit is Z400, and the num­ber­board is from a Royal En­field.

It’s cur­rently apart for fi­nal paint af­ter a dry-build and an ini­tial dyno run – I’ve been fight­ing ham­fisted own­ers drilling holes in ev­ery­thing (in­clud­ing a botched ex­haust stud that peed oil out), and mis­matched com­po­nents stop­ping it run­ning right. It works fine up to 5000rpm, but the next job (once the paint­work is back and it’s back to­gether) will be get­ting it to tran­si­tion and run prop­erly on-boost. Then I have an­other en­gine to ex­per­i­ment with FZR600 pis­tons, which give more ca­pac­ity but also lower com­pres­sion to run more boost. An Ig­nitech pro­gram­mable CDI is a con­sid­er­a­tion, and maybe a big­ger turbo later…

It’s a bitsa al­right – fuel fil­ter from a Massey trac­tor – if you please

niced-up now RG125 forks have you and what with paint

En­gine might get a ca­pac­ity hike with FZR600 pis­tons

Pre­vi­ous own­ers bad bodges have ham­pered progress

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