525sc upgrades???
#1
Registered
Thread Starter
Join Date: Aug 2012
Location: Windsor, ONT
Posts: 12
Likes: 0
Received 0 Likes
on
0 Posts
![Default](/forums/images/icons/icon1.gif)
Looking to get some more power out of the motors with reliability in the mix. Had the lower end done over the summer. new cam rods block etc. Still got the bravo xr's. So I may be limited. Suggestions??? (Intercoolers, bigger blower w dual carb set up)
#2
Charter Member # 55
![](https://www.offshoreonly.com/forums/images/icons/charter_member_star.gif)
![Default](/forums/images/icons/icon1.gif)
Did you keep the comp ratio stock at 7.5:1??? If so, you can easily change to smaller top pullies and bump the boost up to 7# or more, that is if you can find some smaller pullies.
Switching to a 250 blower will also add some HP and you could run about 7# of boost. You can still run the single Dominator carb.
Did you change/upgrade the cams?????
Switching to a 250 blower will also add some HP and you could run about 7# of boost. You can still run the single Dominator carb.
Did you change/upgrade the cams?????
#4
Registered
Thread Starter
Join Date: Aug 2012
Location: Windsor, ONT
Posts: 12
Likes: 0
Received 0 Likes
on
0 Posts
![Default](/forums/images/icons/icon1.gif)
Compression ratio is the same. Upgraded to comp hydr roller. Is the bottom end pretty much maxed out... all upper end stuff??
Any suggestions for drives as well??
Any suggestions for drives as well??
#5
Charter Member # 55
![](https://www.offshoreonly.com/forums/images/icons/charter_member_star.gif)
![Default](/forums/images/icons/icon1.gif)
The XR drive will be fine as long as you treat it decent. I had almost 300hrs on my Imco upper and stock Bravo lower behind my hopped up 525SC making around 575 hp and it was still going strong.
The bottom end is plenty strong enough for 650hp+.
The bottom end is plenty strong enough for 650hp+.