Gulfstream Power

[Bird Blaster]

Sorry if this has been brought up. I'm relatively new to this forum and have a difficult time searching. (Please tell me how if this is an annoying rehash of a topic).

I have pretty much settled on a 232 Gulfstream or a used Journey 258. The reality in my neck of the woods is I will likely have to go new gulfstream as the used market is pretty limited.

I ONLY have 87 octane gas at both marinas in town. I would prefer to run twin 200's over twin 150's. My question is whether I will damage the 200's if I run 87 the majority of the time. The American marinas will have 89, but that is a long run to get it. So the reality is that this boat will likely be fed with 87 for most of its life.

Thanks for your help.
BB

 

[seasick]

The Yamaha specs list 89 only. The 150 will run on either, 87 or 89. Based on that and without additional info, I would be hesitant to rig 200s.
A call to Yamaha might offer some insight. The 200 might be able to adjust for 87 if it has a knock sensor

 

[grady23]

So if your stuck with 87 then buy an octane booster.

 

[Bird Blaster]

Thanks for thoughts and advice.
Just waiting to hear back from dealer regarding his advice.