XR W/Sportmaster on Y2K
 

Anyone tried an XR upper with a sportmaster lower on a Y2k? Results?

I've got an opportunity to buy one with about 20 hrs on it for a real good price & thought if it didn;t hurt it sure would look cooler then the bravo!

70 Views and no comments? looks like I'll be the first to find out!

Ask Fast Eddie.
I also remember JCap saying the sportsmaster lower didn't work well on his boat.

Thanks Pat

Gary, is the sporty a standard length lower?

It cant hurt to have a spare drive. IMO the best money spent on performance is in the prop.

I heard in some cases the merc sport slowed boats, and the imco was faster which is standard 1'' or 2'' shorter. and new there 1800 to 2000 g for vert shaft and case.

It is a standard length lower Nick... It was tried on an older thourghbred 280 which had a lower X dimension then my Y2K by what looks like at least 2''s.... didn;t work well at all on the Throughbred & it was decided that it was because it was to low in the water.... I think I can try it w/o buying it so I may give it a try in the next couple weeks.... I'll let you guys know if I do how it works out... thanks for the responses

you'll lose 2 to 3 mph, I think the sportmaster lower dosen't help at all till you get over 90, It has no leverage and gives you no bow lift, Level trim in the rough Im sure its fine

Thanks.... I'm not certain I'll be into the 90's.... but one can hope!

Gort, what HP are you running ?

X2

The drive would be part a winter project.... I have a naturally aspriated 598 that I may put in this winter.... Dynoed a little over 700 HP.... and as I said I can get a killer deal on this drive so I would be willing to give up a couple three mph for the reliability.... the whole project is still up in the air though... the boat is running great the way it is & I am reluctant to mess with it... but that HP sitting in the garage is really tempting me!

I appreciate everyones input.... thanks

Gort, do you think the Sportmaster lower will be anymore reliable than your XR lower? I would buy a spare XR and run the snot out of the drive. At 700 HP I would think the drive should hold up fine. I rebuild my XR every year and no problems, and I run 50-75 hours per season. Good luck, keep us posted.
Gary

That makes good sense Gary.... Like I said I have a chance to buy this thing really right.... maybe now I know why? I run the boat on a lake & don't really "tax" the drive anyway.... so I have to agree with you the XR will probably last a long time... thanks....

Gary....

Gary, what year is your Y2K ? What speeds are you seeing with 700 ponies ?
Gary

Boat is an '04... currently it has a 496 Mag with a Procharger....3lbs of boost... turns a 30 Bravo one 5000rpms... bumps the rev limiter when its light on fuel.... 80 and a click...

Having a spare drive is a good idea along with that you need someone who can rebuild them . Not your local searay dealer but a good performance shop. 598 GO FOR IT

If you decide not to purchase the drive, I may be interested, I just destroyed a bravo-1 last weekend, and i have been looking for an xr/imco sc

Is that the old style bottom, Gary?

Also, did Boyd build the 700 motor?

duplicate response.... opps

Old style bottom? I have no idea Nick.... it is a "race layup" & was one of 2 built in 04 according to the original owner Scott Harnois.....

Jack did not build this motor but it is now in his hands at his shop....