How much HP with XR's
 

Just wondering how much HP Bravo XR's can withstand. I'm looking to upgrade from 525's on my 36 NT but dont want to drop the $$$ on 6's now. Im also considering possibly getting Max Machine werx drives if neccesary, or picking up somethign new at the miami show. Anyone run Ilmors 625's and XR's?
-Rick

Re: How much HP with XR's
 

Lost I was told upto 600 hp.I'm running 525's with Max Machines and happy with them.Aaron at max is very helpful.

Re: How much HP with XR's
 

I was told 600-650. JC is doing my 500's, and if I have drive trouble, he has said that the Teague shaft in the XR's will make them handle 650 no problem....

Re: How much HP with XR's
 

I was told that Teagues drive was the best between, Imco, Merc. If you have to have a bravo drive get that and mix w/Max Mach. works, or better yet get an Arneson drive.

Re: How much HP with XR's
 

I try to stay around the 650 HP mark for pleasure boat stuff. We have raced single engine "A" class 510 cu.in around 750-775 HP through an IMCO with no problems. Your 500's could easily be bump to that, I have two I am doing right now.

Dean Gellner
Gellner Engineering Marine Power

Re: How much HP with XR's
 

Thats good to hear dean, Jeff has said that doing that with the 500's makes them sing and are still turn key reliable, Mark at Precision will do the computers. I was a little worried having a 42 Tiger and the hp, but I do my best to treat them properly. If something does break, then I know that there is a suitable upgrade to handle it.

Re: How much HP with XR's
 

If i was building a new boat i would. Right now i'm seeing if i can afford to go a little faster and already have 525/xr's. i have the 4 year extended warranty on the mercs and woudl probably sell them and get ilmors.

Re: How much HP with XR's
 

There you go again saying that Damn M word. The Ilmor part is cool :cool:

Re: How much HP with XR's
 

Hey lostinboston

did you say you have 4 yr extended warranties on the 525's? Where did you get them from?

Re: How much HP with XR's
 

We got them through our dealer who got them from a subsidiary of Brunswick. Whoever you bought yoru engines from should know who to contact.