Powerglides — Harley-Davidson XR1200 Performance Upgrades

16 Мар 2015 | Author: | Комментарии к записи Powerglides — Harley-Davidson XR1200 Performance Upgrades отключены
Harley-Davidson XR 1200 Concept

Harley-Davidson XR1200 Performance

Whilst essentially a Sportster, decided to give the XR it’s own as we own one of these, and it is undeniably one of the best Harley has ever built. It it stops, it’s quick, and it is tuneable. It’s European position also makes it comfortable for long distance

We have now ridden over 10k on the XR1200 under a number of conditions. This includes 800 in one day coming back from an 80 mile blast on a quiet in Germany with the revs not below 6k, and commuting through London traffic.

Having dyno tuned an increasing of customer bikes with exhaust systems. including two cup race bikes, and our own, on in house RD program, we are arguably the experienced XR1200 specialist in the UK . As all Harley-Davidson performance upgrades. is a lot more involved than selling the parts. We supply the install, machine where and correctly tune. All under one

The buck stops here.

Our being remapped on our Superflow The twin 22 wide screen mounted in front of the bike us to run two software programs simultaneously and see what is going on during the tuning process. Although it is like having a ‘window’ to the and the ECM.

We run the complete Supertrapp on ours and will be experimenting cams, compression ratios, air headwork, and capacity increases as the parts become available. As our other Harley tuning. we use the Link Flash Tuner and our Superflow dyno to remap the ECM which gives complete over fueling and ignition

Customer’s XR1200X fitted Termignoni exhaust and dyno here with Direct Flash Tuner.

The ports, chambers, valves, guides, and in the XR1200 heads are the same as the up 1200 Sportster and XB12 so much of what we develop for bike will be applicable to all the Sportsters and also retro fit the Evo XL models.

XR1200X with exhaust system, and our own XR1200 with the Supertrapp system. bikes have been tuned with Direct Flash Tuner and are used as transport.

Remapping Harley fuel on the dyno is the best way to get the best the engine, Although late in the we had the opportunity to dyno tune one of the Henderson Cup race bikes. The was an astounding 3 seconds a lap on the Brands Grand Prix circuit.

is about as far as we can go with Harley performance upgrades without inside the engine.

This race bike (2011) is an with the Harris race

As with all fuel injection performance upgrades . this with the Supertrapp exhaust greatly benefits from tuning .

The Remus complete exhaust for the XR1200 has a very large dip in the mid range. This customer a Supertrapp universal muffler to the headers and, following experimentation on our dyno, we managed to a combination that produced a torque gain from to 7000rpm, with a massive 20% at 4500rpm. Accurate measurements on our dyno, and an appropriate remapping of the injection system with our Link Flash Tuner software was essential in achieving remarkable gains.

Ported heads for Harley-Davidson XR1200

Harley-Davidson XR 1200 Concept

the XR1200 performs very with a decent exhaust and correct dyno tune, for of us it just isn’t enough. As of our ongoing RD program for this motorcycle, we now have Head cylinder heads. These are OEM castings, hand ported by the in the business.

1.900 Intake and 1.625 valves are one piece stainless with 5/16 diameter chrome stems and stellite

Stock valve stem maintain rocker geometry

bronze valve guides for heat transfer and long

Viton stem seals for lubrication and minimum oil consumption

Quarters valve springs titanium top collars and high keepers

No interference with the oil cooling galleries

Head cylinder heads form the of our Harley-Davidson XR1200 engine upgrades with no compromise of

Machining Harley-Davidson XR1200 crankcases to accept an 88 big bore Having a dedicated machine as well as the dyno, puts us at the front of performance upgrades for remarkable motorcycle.

Harley-Davidson XR 1200 Concept
Harley-Davidson XR 1200 Concept
Harley-Davidson XR 1200 Concept


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