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View Full Version : modifying xr6 (smallcase)for dragrace duty


stocer
08-23-2003, 09:04 AM
when sitting at line and trying to clear motor out by reving in neatral i here they have a tendency to jump in reverse causing catastrphic failure?i will remove by grinding off clutch jaws and gearteeth on reverse gear.will i now be able to pull shifter and hold in reverse while revving engine so there is no chance of it slamming into forward?i will also upgrade to heavy aftermarket bearing carrier and address issue with clutch crosspin that has tendency to come out.on a budget and cant afford stecbauer mods.any advice is helpful
Earl Murchison
08-23-2003, 10:18 AM
It is spring loaded to jump in forward gear not reverse . Your solution will probley work but I do it a little different.
earl murchison
stocer
08-23-2003, 10:23 AM
please tell,i need all the help i can get
Earl Murchison
08-23-2003, 10:57 AM
Your modifications are a must but i also use the merc fishing motor control box that positivley locks in neutrel I adjust the cable at the motor towards the rear in the neutrel slot . no trouble in the last 7 yrs.
earl murchison
stocer
08-23-2003, 01:10 PM
do you run original gears (1.78 to 1)??do you use reverse gear?do you tack weld cross pin in clutch slider??when draggin ,how hi do you run prop center above bottom??.i have mirage RR w/drag motor and 9"setback.thanks for help!!
Earl Murchison
08-23-2003, 01:30 PM
org gears tack weld pin both sides grind teeth off reverse at gear and shift dogs start 1/2" above bottom is where i like the prop shaft for STV race boat and QuarterMaster both with mod 260 6" setback. 24p yamaha pitched up to 25
earl murchison
stocer
08-23-2003, 01:45 PM
seems like alot of pitch for those tall gears?are you ussing naws?what rpm at end of track?would love some pics of your boats!! kevinkraft4@comcast.net
Earl Murchison
08-23-2003, 02:18 PM
Not using nitros 9850 rpm 9.94 et and 112.9 mph is my best time and speed .
Thanks earl murchison
Earl Murchison
08-23-2003, 02:23 PM
pic
stocer
08-23-2003, 02:48 PM
awesome looking rides and impressive et and speed.will stv keep up in a drag race?http://newprintmirage.jpg
stocer
08-23-2003, 03:07 PM
hope this will post
Earl Murchison
08-23-2003, 05:49 PM
Stocer THANKS STV is unfinished project.
THAT IS A GREAT LOOKING RR . Awesome wheele too.