Bravo drives
Can anybody tell me what the exact differences are between a Bravo Xr and a Bravo XZ drive. I know that XR's have straight cut net forged gears and can handle more HP, but I know nothing about XZ's
I need to to know which one would be better to put behind 750hp blower motors. |
Re: Bravo drives
The only difference between a XR and a XZ is the top gear set. They both have the same lower unit shafts and guts.
The top end is straight cut on a XR and helical on a XZ. I have had both and never had any problems out of the top gear sets Just the lower units. |
Re: Bravo drives
The XRs do make more noise than the XZs, I ran 700hp thru XZs for two years without a problem
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Re: Bravo drives
Originally Posted by BBB725
The XRs do make more noise than the XZs, I ran 700hp thru XZs for two years without a problem
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Re: Bravo drives
Here's a breakdown of the differences between them:
http://www.go-fast.com/mercruiser_bravo_sterndrives.htm I have XR's Even though I had to put a pinion gear and a vertical shaft bearing in the starboard drive, and had to replace the complete upper on the port, due to a gear failure, that broke the housing. I don't know if it was due to bad material in the gears, or the former owners operating habits, or if it's that they just have a shorter useful lifespan( the gearsets)??? I bite my tongue and say that XR's are probably your best bet. |
Re: Bravo drives
Thanks J.T. !!! Good info. It looks like the XR is the better of the two. I am also looking at Imco, Teague etc.
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Re: Bravo drives
Originally Posted by Smitty
Thanks J.T. !!! Good info. It looks like the XR is the better of the two. I am also looking at Imco, Teague etc.
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Re: Bravo drives
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At probably a few $$$ extra, you can get a set of custom built drives from TNT. XR uppers, with custom TNT HD cap, Imco gears, shafts and Imco sportmaster lower.
700 hp/770 lbs torque. |
Re: Bravo drives
Originally Posted by expresscat39
At probably a few $$$ extra, you can get a set of custom built drives from TNT. XR uppers, with custom TNT HD cap, Imco gears, shafts and Imco sportmaster lower.
700 hp/770 lbs torque. |
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