Licks Cycles: Turbo GSX-R600 SRAD

Turbo SRAD: Turbocharged Suzuki GSX-R600 from the UK…

In 1996, Suzuki launched the GSX-R750 SRAD, which might revolutionize the sportbike world simply as the unique GSX-R had completed a decade beforehand. Gixxers has been gaining measurement and weight yearly since ’85, however the SRAD stopped that pattern useless in its tracks, jettisoning the standard cradle body for a light-weight, GP-bred twin-spar aluminum body derived instantly from Kevin Schwantz’s RG500 Grand Prix machine.

In the meantime, the brand new SRAD (“Suzuki Ram Air Direct”) WT engine was not solely narrower and extra highly effective, however practically 20 lbs lighter than the WS mill it changed. The consequence was a motorcycle that might punch effectively above its weight class.

“The brand new GSX-R’s largest efficiency good points had been its 50-pound weight discount (422 kilos with an empty tank and 453 kilos filled with gas and able to experience) from the earlier GSX-R, and its roughly 116 horsepower on the rear tire. This put it in the identical weight class as most 600s on the time, whereas having near-900cc horsepower.” –Cycle World

Embarrassingly sufficient for Honda, the SRAD 750 really bested the CBR900RR in horsepower and high pace! The GSX-R600 SRAD adopted a yr later — a motorcycle that might not solely win supersport races practically proper out of the field, however was one hell of a hoot on the roads:

“Ridiculous, harmful enjoyable, it’s a uncooked, involving, lunatic on wheels.” –MCN

Enter our new buddy Adam Richardson (@Adam.p.constructed ), a UK-based mechanical engineer who’s been tuning 90s Gixxers for many of his life. His first-ever large bike — a water-cooled GSX-R750WN with a 907cc large bore and one-off Yoshimura Japan growth head — ended up as {a magazine} function bike. Adam’s WN was as quick because it appeared, too, operating 10s at Santa Pod Raceway.

Right this moment, Adam works out of his small residence workshop, the place he does porting work, machining jobs, and works on builds just like the turbo SRAD 600 you see right here.

“Often disappear into the workshop for hours making bits for the bike or planning my subsequent modification kinda like my church tbh :)”

This bike started life as a 1998 Suzuki GSX-R750 SRAD — the primary of the fuel-injected 750s. Initially a lockdown undertaking, the SRAD acquired a big-bore equipment and large brakes, however Adam had begun listening to the siren track of compelled induction and determined it was time for his first turbo construct.

“I made a decision on a combination between a Yoshi endurance XRO bike and a Fortunate Strike race rep, then got here up with this design. After which thought that blended with a turbocharged bolted on the facet could be epic!”

Epic certainly. Little of the unique SRAD 750 is left. The engine has been swapped for a GSX-R600 lump with a thicker head gasket, Kent cams, and Adam’s personal {custom} porting…simply to call a number of highlights. The turbo is a modified IHI unit with ported housing and a one-off chrome steel plenum and manifold, matched with a pie-cut titanium slash exhaust.

An digital quickshifter handles the gear adjustments, and the suspension and brakes have been introduced as much as par with the increase. The swingarm is a GSX-R1000 K4 unit with a Nitron spring and Technoflex rear shock, and inventory GSX-R600 forks have been revalved and resprung to go well with Adam’s weight and wishes.

The wheels are Brembo, powder-coated Sony PlayStation 1 grey with ceramic bearings and {custom} spacers, and the brakes are a mixture of Brembo and PFM goodies with HEL traces, with a billet thumb brake for when the entrance wheel takes flight.

Ex-F1 titanium bolts might be discovered all through the construct, and the quick-action throttle is an ex-factory Yoshimura billet unit. We may go on and on, however Adam has a full record of mods under.

So how does all of this work translate to the rear wheel?

“It’s operating at simply over 200bhp at 15psi however I count on it to make round 250 as soon as I’ve made a number of upgrades over the winter, which can embody an intercooler and making the engine stronger — it’s round 170kg dry weight.”

That’s greater than double the horsepower of the inventory SRAD 600. As you’ll be able to think about, the using expertise is nothing wanting epic:

“It’s truthfully essentially the most enjoyable bike I believe I’ve even ridden because of the sound the turbo makes, and in addition with the quantity of pops and bangs the exhaust will make at will — additionally it has zero turbo lag. Figuring out I put the bike collectively myself makes all of it that bit extra particular :)”

The sound of the exhaust — and its tendency to spit the occasional flame — has helped the bike earn the nickname the “ASBO SRAD.” ASBO means “Anti-Social Conduct Order,” a British civil order for an individual to cease behaving in a method that causes alarm or misery, ha! A advantageous moniker certainly.

Beneath, we speak to Adam for the total story on his turbocharged GSX-R and the whole components record. Additionally, an enormous thanks goes out to Dave Elliott at Moto Dave Pictures for the gorgeous pictures and placing us in contact with Adam. Thanks, Dave!

Turbo GSX-R: Builder Interview

• Please inform us a bit about your self, your historical past with bikes, and your workshop.

Mechanical engineer by commerce, have at all times had a ardour for bikes since I can bear in mind. I’ve been using since a younger age, been tinkering about with bikes for so long as I can bear in mind, too. It was grime bikes when youthful then street bikes; my first street bike (scooter) being a Peugeot Speedfight that I closely modified and managed to get it to do a real 90 mph after which the necessity for pace simply grew.

My first greater bike was a Suzuki GSX-R750WN, first of the water-cooled fashions. Once more I closely tuned it by becoming an enormous bore equipment, managed to get maintain of some additional manufacturing unit components for it and it completely flew. Ended up being {a magazine} function bike and would run within the 10’s at Santa Pod. And from there I’ve owned numerous 1000’s and different GSXR’s, which I’ve at all times tinkered with.

I’m additionally identified for my cylinder head porting work and have completed fairly a number of porting jobs over time.

I’ve my very own little workshop at residence consisting of a 100-year-old metallic lathe, additionally TIG welder and numerous different machining gear. Often disappear into the workshop for hours making bits for the bike or planning my subsequent modification kinda like my church tbh I’ve somewhat Instagram web page exhibiting a few of my work: @BarryAlanRacing.

• What’s the make, mannequin, and yr of the donor bike?

The bike is a 1998 Suzuki GSX-R750fi SRAD.

• Why was this bike constructed? (Buyer undertaking, firm promotion, private, and many others.)

I constructed it as I’ve at all times love the look and form of the SRAD mannequin GSXR’s and thought what higher bike for a {custom} construct. It was firstly constructed as an SRAD with an enormous bore and mildly tuned motor and large brakes (which was a lockdown construct), however I quickly bought bored and at all times longed to construct a turbo so started working on constructing the turbo SRAD.

• What was the design idea and what influenced the construct?

I’ve at all times appreciated the look of the SRAD’s that ran full-on manufacturing unit fairings like within the previous Yoshi endurance bikes; I’d see pictures of the underside a part of the fairings eliminated exhibiting off all of the manufacturing unit radiator and dry clutch kits, and many others. that they’d run, and thought how trick do they appear!

Kinda bought the thought of operating the half fairings from that after which beloved the look of the previous Fortunate Strike race bikes from again within the day, I made a decision on a combination between a Yoshi endurance XRO bike and a Fortunate Strike race rep, then got here up with this design. After which thought that blended with a turbocharged bolted on the facet could be epic!

• What {custom} work was completed to the bike?

The mods on the bike are:

Suzuki GSX-R1000 K4 swingarm
Customized-made 2mm offset billet eccentric body swingarm inserts
3D 525 drive chain with Talon 47 tooth rear alloy sprocket, JT 16T entrance sprocket which is offset by 5mm.
Commonplace SRAD 600 forks with Abe Engineering stanchions, binitride-coated by Manufacturing facility Coating
Harris 45mm clip-ons
Toby side-mounted steering damper
Forks revalved by Okay Tech, additionally resprung to go well with my weight.
Fork bottoms and fork tops ceracoated burnt brown by Stopping Energy Coatings
Rear shock is a billet Technoflex merchandise with a Nitron spring to go well with my weight, {custom} canine bones, billet experience peak adjuster — additionally each linkage bolt is titanium.
Customized billet high yoke made to my design, which additionally makes the entrance finish extra inflexible.
Brembo wheels modified to suit with {custom} spacers and aftermarket ceramic bearings, painted in Sony PlayStation 1 gray by CSP Powder Coating
Pull cup axles with 3D-printed centre nuts.
She wears Pirelli Supercorsa SP v3 tyres.
Crash bobbins which I spin up within the lathe
A great deal of titanium bolts some that are ex Honda F1
Customized made switchgear buttons by Bike Sport Developments
Ex manufacturing unit Yoshi billet fast motion throttle

Entrance Brake:

Brembo RCS 19 Corta Corsa grasp cylinder with ten quick lever, ex Harris Suzuki manufacturing unit entrance fluid res, Tygon 2375 res hose. PFM 320 entrance slender observe stainless rotors fitted with titanium bolts, PFM 6-pit billet calipers with SBS ceramic pads. Customized caliper spacers to go well with.

Rear Brake:

PFM 84mm billet caliper with SBS ceramic pads, slender observe rear stainless race disc, titanium dry brake connector, Ducati Panigale V4 S Brembo grasp cylinder on the foot pedal, which additionally has pushrod spring and stage cease made by @racecomponentdevelopment — additionally Titanium Racetorx grasp cylinder adapter.

Additionally rear has an SES billet thumb brake becoming with a 14mm Brembo mc titanium pushrod and adjuster Brembo fluid res. HEL brake traces all through made by @lightenUPgrade.

Engine:

Suzuki GSX-R600 ’98 carbed motor
Operating a {custom} Cometic thicker head gasket from the USA.
Kent cam, billet guide cam chain tensioner.
Cylinder head ported on my own.
Suzuki TLR’s clutch with custom-made basket springs and Barnett clutch plates
Modified engine oil pan to just accept the turbo’s oil return.
Outsized radiator with HRC enlargement bottle & one-off carbon fibre bottle holder.
Ex manufacturing unit Yoshi XRO SRAD gear shift linkage.
Modified Suzuki ignition.
Racegadgets quickshifter
5mm offset entrance sprocket to go well with the GSX-R1000 K4 rear swingarm.
Malpassi gas stress regulator & Bosch gas pump.
Modified 1998 Suzuki GSX-R600 carbs
Aftermarket oil catch can modified internally, ITG breather filter.

Stainless-steel one-off turbo manifold made on my own together with a extremely modified IHI turbocharger which has aftermarket rotors. Turbocharger housing can be ported and profile altered. Has a Turbosmart wastegate actuator with {custom} spring. Turbo exhaust is bespoke on my own, which is stainless then has a pie-cut titanium slash exhaust. Ramair turbo air filter.

The plenum can be a one-off bespoke unit to go well with the bike with a Turbosmart supersonic dump valve, which runs between the turbocharger and the plenum.

Electrics:

One-off loom
1998 Suzuki GSXR SRAD 750fi clocks modified and barely rewired internally.
Yoshi oil temp gauge & AEM air/gas ratio gauge each mounted to the sprint on carbon fibre.
Stack increase gauge which is mounted in a titanium bracket which has a one off carbon fibre shrouding on the again.
Modified ignition which runs barely retarded in locations.
Racegadgets quickshifter which is activated by the change gear.
Noco lithium battery.

Bodywork:

Commonplace nostril cone and cut-down entrance fairings, Yoshi two-piece manufacturing unit ram air air tubes.
Motogadget LED recessed entrance indicators
Carbon fibre entrance mudguard.
Fast launch titanium display screen brace, which I designed and made — mounted through a nylon bushing within the steering stem.
Airblade clear double bubble display screen with Bob Heath air hump.
Commonplace seat unit with Bike Type undertray and Demon Tweeks LED rain lights modified to work on the street. R1 mini LED rear indicators.
Modified customary petrol tank to suit over the plenum with one-off gas pump feed and return becoming plate. Tank additionally runs a breather with an HRC catch bottle with one-way feed system and carbon fibre bottle holder. Newton Tools gas cap. Titanium fast launch tank pins which I additionally made.
Modified customary seat to go well with reprofiled petrol tank.
The bike can be vinyl wrapped which was completed by @motowraps.

• Does the bike have a nickname?

It’s form of been named by my buddies as undertaking ASBO SRAD on account of how loud it’s and the way it will produce the odd 3-foot flame lol, so it’s unofficially ASBO SRAD

• Any concept of horsepower, weight, and/or efficiency numbers?

It’s operating at simply over 200bhp at 15psi however I count on it to make round 250 as soon as I’ve made a number of upgrades over the winter, which can embody an intercooler and making the engine stronger — it’s round 170kg dry weight.

• Are you able to inform us what it’s prefer to experience this bike?

It’s truthfully essentially the most enjoyable bike I believe I’ve even ridden because of the sound the turbo makes, and in addition with the quantity of pops and bangs the exhaust will make at will — additionally it has zero turbo lag. Figuring out I put the bike collectively myself makes all of it that bit extra particular

Though it’s an older superbike you’ll be able to nonetheless actually benefit from the twisties, particularly with fashionable rubber, so in a phrase it’s fairly epic

• Was there something completed throughout this construct that you’re notably happy with?

Contemplating that is my first turbo construct when it began first time that was a reasonably proud second for me.

• Is there anybody you’d prefer to thank?

Want to thank Dave Dunlop at Fastbyme Turbo Programs for all the assistance and ideas and numerous questions when constructing the turbo equipment.

Additionally an enormous because of Tim at Steel Prefabrications Dartford LTD for serving to me with all of the welding jobs that I wasn’t in a position to do myself. Additionally large because of Dave Elliott at Moto Dave Pictures for all of the epic pics.