Thread: Big Bore/Ported Speed List
07-18-2007, 12:56 PM #1
Big Bore/Ported Speed List
Being so many options for going big bore and ported I was hoping those with these setups could post their bore, who did the porting (if any), and the speeds you are running. I know some may not want to relinquish that info and that is fine.
If you don't mind playing along, please list:
-(Y/N) Porting and done by who
Any additional opinions on various setups would be great.
I plan on doing something over the winter and just want to gather as much info as I can. Thanks fellas
07-18-2007, 03:31 PM #2
OEM 1300 pistons
Best before MB 82.8mph @ 7160
Already told you everything else in my boat.
Last edited by Duke; 07-18-2007 at 03:34 PM.
07-18-2007, 06:32 PM #3
Lowell Horning ported
Last edited by spud; 07-18-2007 at 07:46 PM.
07-18-2007, 06:59 PM #4
07-18-2007, 07:04 PM #5
Lowell 1390, non PV EFI 80.0 in 90+ florida summer heat and humidity.
07-18-2007, 07:40 PM #6
What I was hoping to find through this is basically how a ported 1300 compares to a ported 1390.
It seems there a quite a few 80 mph ported 1300's. Rarely do you hear of 80+ mph ported 1390's. Ross may be the first I can remember actually.
Is this because there are more ported 1300's than 1390's or is the 1300 actually a better more efficient motor than a ported 1390?
07-18-2007, 07:49 PM #7
Many more ported 1300's
Lowell just started experimenting with 1390's a little over a year ago. When I had him do the work on the 1300 I asked him about the 1390 and he told me he really didn't have enough data yet.
So I went 1300 to play it safe.
07-18-2007, 07:54 PM #8
Not trying to jack the thread but I wouldn't mind here which is more reliable of setups also. Also maybe a price comparision if possible?
I am thinking about doing the same thing this winter.
07-18-2007, 08:11 PM #9
Yeah, I have ridden 2 - 1390 boats. A Group K 1390 and a Kerry Hibdon EFI 1390.
If I keep my GPR, I have got to go big bore ported.
The Kerry boat I rode was nuts. I had bruises on my inner thighs from holding onto the seat in a semi-superman position.
Stock 1200's and 1300's are boys toys. You haven't experienced a GPR unless you have ridden a big bore/ported boat. It is unreal dude!
My boat is pretty quick on top end, but it doesnt have that RIP YOUR NUTS OFF RAW 2-STROKE IM GONNA BEAT YOUR MOMMA WITH A BAT PULL.
Last edited by MPower; 07-18-2007 at 08:14 PM.
07-18-2007, 08:15 PM #10
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