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Old 07-12-2019, 10:27 AM   #14
'04 1300
sburke91's Avatar
Join Date: Aug 2004
Location: Delaware, OH
Posts: 3,054
Originally Posted by Garyfack View Post
Sean, Thanks for your input. Your 197/131 dyno run is impressive from the MWT rally. You mentioned I will need ARP motor bolts and pinned main bearings when i push for the 200hp. is there a list you are going off or a checklist... i have searched a lot of pages on here and keep finding different results to what to upgrade, and it seem like this forum has faded as not a lot of people are making new posts. i just want a list so i can go through and check it off with what power im looking for. I don't want to over build and get a billet crankcase and i don't want to underbuild and miss a 400 dollar bolt kit when i buy a 5k forced induction kit.
Honestly, I'm still a bit shocked that the bike hit those numbers, as I was expecting about 20HP less. In all transparency, keep in mind that's with a big slug of nitrous oxide, and not something I use every day on the street.

That said, I put ~60hp of nitrous into a 11 year old/20k+ mile big bore build and it appears to have survived (based on the ~100 street miles I've ridden since it was on the dyno).

Here's what mine had in it's initial build, from a strengthening standpoint:
  • Pinned main bearings
  • 10MM studs on the heads and the crank bolts
  • HD slipper clutch (mine's an '04, so didn't originally have the slipper)
  • Updated transmission parts (drum, shift actuator, shift shaft)
  • Tool steel shift shaft
  • Vance and Hines 2nd gear

This is what I'm planning to add this winter:
  • Fitzgerald Motorsports crank brace
  • Fitzgerald Motorsports oil pan
  • Fitzgerald Motorsports clutch basket
  • Some level of updated clutch components (likely springs, possibly Barnett plates)

All of that said, I'd suggest chatting up Scott Fitzgerald about what your desired outcomes are, and what his recommendations would be. His team's built a number of high HP v-rods of various combinations of big bore and forced induction, and a number of people running high HP VRSC's have one or more of his parts in their motors.
Sean Burke--Delaware OH
1300 'Baby Destroyer' Stroker
SE Heads, Jones Cams/Valves/Springs
Destroyer TB and Injectors
CP Pistons
Bub 7 2-1
Walbro 255 Fuel Pump and 5-bar Regulator
Lots of other bits and pieces

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every now and then
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