What was the EFI on the 1991 Polaris Indy 650?
The end result would be a multi-million dollar judgment in favor of Injection Research Specialists. Regardless, the 1991 Polaris Indy 650 RXL EFI proved quite a pacesetter. To keep the 650cc triple cool, Polaris used aluminum extrusions mounted under the runningboard.
What’s the difference between fuel injected and carbureted Polaris Indy 650?
The fuel injected motor differed from the carbureted version. Appearing the previous winter as a ‘limited build’ preview, the fuel injected RXL came into full production with evolutionary updates. The cylinders and heads were unique to the EFI triple, helping the engine breathe easier and boosting power.
What’s the difference between a Polaris 650 and RXL?
The Polaris RXL front end featured total adjustability and more than six inches of travel. The sled’s ski stance measured 38-inches, which was 1.5-inches greater than the stance of the standard 650. The RXL’s rear suspension was what Polaris called its ‘Dial-Adjust’ suspension with nearly 8-inchs of mogul-absorption.
What kind of fuel system does Polaris snowmobile use?
Although electronic fuel injection had begun to show up as an aftermarket add-on for snowmobiles, Polaris became the first snowmobile manufacturer to produce an actual production sled with EFI technology. Fitted to the top of the line Indy 650 performance triple, the fuel system quickly appeared on the popular Indy 500 twin.
The end result would be a multi-million dollar judgment in favor of Injection Research Specialists. Regardless, the 1991 Polaris Indy 650 RXL EFI proved quite a pacesetter. To keep the 650cc triple cool, Polaris used aluminum extrusions mounted under the runningboard.
The fuel injected motor differed from the carbureted version. Appearing the previous winter as a ‘limited build’ preview, the fuel injected RXL came into full production with evolutionary updates. The cylinders and heads were unique to the EFI triple, helping the engine breathe easier and boosting power.
When did Polaris stop making the 500 free air triple?
Polaris would build the 500 free air triple until the 1975 model year. The performance triples were all free air engines and as they continued to evolve and make more power, dissipating heat was becoming more of an issue. Mild temperatures reduced the cooling efficiency and that meant power dropped as the engine temperature increased.
Are there different codes for the Indy 500?
There is a possibility for 2 different codes, either you’re seeing 1 long and 1 short, or you’re seeing 2 long flashes and nissing the short flashed.