Thanks Guys,
Twin pipes! thats right, been testing twin pipes with our 860r big bore kit for the 2007-2008 skidoo 800r motor exceeding our expectations with more power all the way thru the power curve. pretty much have a set of pipes finallized.
Our 860r big bore with cast pistons(reliable), mtn. ported(same as last season), billit head(12.5-1 comp. ratio), exhaust valve modification, with stock pipe, y pipe, can and stock airbox made 10% more hp then stock. we expected 6% gain but achieved 10%.
Twin pipes on our 860r big bore made 20% more hp over stock.
These were 45-60 sec pulls, with stock timing, staying under the det sensor.
Remeber the det sensor is your friend and keeps your motor from harmful damage. If the det sensor is triggered and drops 5 hp, thats better then detonation and damaging a piston or dome or cyl.
a little more testing to be done until the twin pipe package is finallized
860r big bore kit $2300.00 (availible)
Twin pipes $899.00 (not availible until final testing completed)
Thanks Ted,
Terra Alps Racing inc.