I'm interested in relocating the oil injection lines on my 83 vmax--changing from injecting before the pumps to using the fittings on the intake flanges. From some of the other posts I have read on the forum, it appears to be easy since the fittings are already there on my 83. Is it as simple as just moving the lines to these fittings and closing off the old location, or is there more to it?
Thanks!
Relocating oil lines--83vmax540--simple, or not?
I guess some have done it that way but here is something to think about if you do.
Most oil injection systems that goes to the manifold have the ports on the bottom of the manifold. The ports on the Vmax cylinders are sync ports and are on top. If you inject oil on these ports you may find that some of the oil will bleed out of the lines when the sled is sitting. If that happens you will have a very smoky first startup and then the pump will have to play catch up to refill the lines. I'm not sure if this will or won't be an issue but you may want to keep an eye on it if you switch your lines.
I've never seen or had problems with Yamaha's system of injecting the oil into the fuel lines but many people seem to think it is a disaster waiting to happen. Their theory as to why does make sense but I don't think that anyone can say for certian that it caused an engine failure. I don't know if it would be true but I could make the argument that Yamaha's system of injecting oil into the fuel lines before the pump is better than injecting into the manifold as the oil is throughly mixed with the fuel when it is delivered to the engine and not just dripping into the manifold with only a milliseconds time to get mixed before entering the engine. There are two ways of looking at it and I can't say for sure which is right but both methods have been used for years so I'm not sure if it really makes much difference.
Yamaha has used that design on many different models for many years with many,many, many miles on them to prove to me that the system works. I don't see it as an issue of concern but I do run my oil adjustments on all my sleds a little fat just to be safe.
opsled
Most oil injection systems that goes to the manifold have the ports on the bottom of the manifold. The ports on the Vmax cylinders are sync ports and are on top. If you inject oil on these ports you may find that some of the oil will bleed out of the lines when the sled is sitting. If that happens you will have a very smoky first startup and then the pump will have to play catch up to refill the lines. I'm not sure if this will or won't be an issue but you may want to keep an eye on it if you switch your lines.
I've never seen or had problems with Yamaha's system of injecting the oil into the fuel lines but many people seem to think it is a disaster waiting to happen. Their theory as to why does make sense but I don't think that anyone can say for certian that it caused an engine failure. I don't know if it would be true but I could make the argument that Yamaha's system of injecting oil into the fuel lines before the pump is better than injecting into the manifold as the oil is throughly mixed with the fuel when it is delivered to the engine and not just dripping into the manifold with only a milliseconds time to get mixed before entering the engine. There are two ways of looking at it and I can't say for sure which is right but both methods have been used for years so I'm not sure if it really makes much difference.
Yamaha has used that design on many different models for many years with many,many, many miles on them to prove to me that the system works. I don't see it as an issue of concern but I do run my oil adjustments on all my sleds a little fat just to be safe.
opsled