Advice on Yamaha R1/Fazer engines
Posted: Mon Dec 26, 2016 11:37 am
Hello all
My R1ot is fitted with an early, originally carbed, R1 engine. This would be fine, except that the last owner fitted GSXR 750 throttle bodies and DTA management. This set-up is dreadful, no torque below 5000 rpm, it fluffs and stalls often and only produces just over 100bhp. The installation of the new ECU has involved much hacking of the Yamaha wiring and the production of a new crank trigger wheel for the ignition. It has a cheapy electronic dash and a variety of irritating electrical gremlins, including one that flattens the battery in 2 days... and an intermittent charge fault too.
I considered taking it up to Northampton Motorsport to get it set up better, but they suggested that they couldn't get any more power than the OE carbed Yamaha set-up and that I also need to fit a full air box before I take it. The airbox would be a good thing because the induction noise is shattering. I also need to rethink the exhaust as it's far too noisy for most trackdays.
Fine, but it seems to me that I might well be better getting another donor bike and reverting to OE spec. Consequently, I've been looking at damaged R1s and Fazers. Early carbed R1s with good mechanicals are rare now, so I was wondering if a later, injected one, or a Fazer motor, would fit my existing engine mounts. I've been told that the 2008/9-on 'big bang' motor is different, but that the previous models might well be ok. However, no one I have spoken to at Yamaha dealers and even breakers has been able to confirm, and I've only had a quick look at a complete and undamaged 2005 R1 to compare.
I'm trying to make a decision about which direction to go. If I have to fabricate a new engine cradle to install an injected R1 motor, then I might as well buy a smashed zzr1400 and get the extra torque and 190bhp, but if it's a straight bolt-in, it would be the quickest way to resolve the faults.
I'd be really grateful for any advice or recommendations.
My R1ot is fitted with an early, originally carbed, R1 engine. This would be fine, except that the last owner fitted GSXR 750 throttle bodies and DTA management. This set-up is dreadful, no torque below 5000 rpm, it fluffs and stalls often and only produces just over 100bhp. The installation of the new ECU has involved much hacking of the Yamaha wiring and the production of a new crank trigger wheel for the ignition. It has a cheapy electronic dash and a variety of irritating electrical gremlins, including one that flattens the battery in 2 days... and an intermittent charge fault too.
I considered taking it up to Northampton Motorsport to get it set up better, but they suggested that they couldn't get any more power than the OE carbed Yamaha set-up and that I also need to fit a full air box before I take it. The airbox would be a good thing because the induction noise is shattering. I also need to rethink the exhaust as it's far too noisy for most trackdays.
Fine, but it seems to me that I might well be better getting another donor bike and reverting to OE spec. Consequently, I've been looking at damaged R1s and Fazers. Early carbed R1s with good mechanicals are rare now, so I was wondering if a later, injected one, or a Fazer motor, would fit my existing engine mounts. I've been told that the 2008/9-on 'big bang' motor is different, but that the previous models might well be ok. However, no one I have spoken to at Yamaha dealers and even breakers has been able to confirm, and I've only had a quick look at a complete and undamaged 2005 R1 to compare.
I'm trying to make a decision about which direction to go. If I have to fabricate a new engine cradle to install an injected R1 motor, then I might as well buy a smashed zzr1400 and get the extra torque and 190bhp, but if it's a straight bolt-in, it would be the quickest way to resolve the faults.
I'd be really grateful for any advice or recommendations.