Thread: SpeedFreaks 1500 cc GPR
10-25-2006, 01:25 PM #1
SpeedFreaks 1500 cc GPR
is this new, or old, and why did they modify the exhaust?
10-25-2006, 02:02 PM #2
I wonder if you could just start off with the 05 + jugs since they are non PV motors.
10-25-2006, 02:41 PM #3
- Join Date
- Nov 2005
- All over
Them jug walls look THIN!!!
10-25-2006, 04:31 PM #4
"Second reason is for speeds in search of 80 mph with a single pipe motor."
Umm - he didn't need 1500 cc's to achieve this. There's several 1300 cc skis hitting 80.
10-25-2006, 09:49 PM #5
10-25-2006, 10:24 PM #6
10-25-2006, 10:40 PM #7
That approach was used in the begining.The wrist pins had to be bored,so they were weak in that area.Tripples would cause stress cracks in the rod bosses so other avenues were persued.When the 1300 first came out,it became easier and cheaper to go bigger bore by using the stock 1300 piston as it became available.I think that crank on that was stroked also.
10-26-2006, 11:50 AM #8
- Join Date
- May 2006
that page has been up for like years
10-28-2006, 02:35 PM #9
old news boyzzzz,,,like 2002 news. he used cr 500 pistons...89mm, standard stroke.....
u go that big,,,better start thinking out of the box. lots of funky things start to happen over the 1500cc number....imho erics mistake was taking volume AWAY from the exhaust system....it needs MORE volume.
Last edited by HopatcongGPR; 10-28-2006 at 02:38 PM.
10-28-2006, 06:53 PM #10
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