Wondering if u can bore out a vt1100 which has a 87.5mm bore to 89.5mm (vtx piston)???
Agree, since the VTX bore is 2mm greater.Cylinder walls may be too thin.
My thoughts exactly, Gnarly. You might be able to get the piston to fit, then find out it slams into the valves because it's .010 taller from pin to crown than the 1100 piston. Are the heads shaped the same? Are the crank journals the same? Etc.Fair chance that even if the jug WOULD stand that massive overbore, what are the OTHER differences?
Besides bore dimension?
Would also need to know CRITICAL differences, like:
Wristpin size / length, wristpin placement in the piston, compression height, difference in stroke vs difference in connecting rod length, difference in shape / size of combustion chambers.
No.. It's only a 1mm increase.. if we take 1mm off the bore that is 2mm across the bore.Agree, since the VTX bore is 2mm greater.
78.74015748031496 thou = 2 mm.
Even if it's 1mm vs. 2mm, what's the largest Honda oversized piston for the 1100? From a quick forum search, I found this thread from 8 years ago...No.. It's only a 1mm increase.. if we take 1mm off the bore that is 2mm across the bore.
But the important thing would be if the other sizes all matched, length of piston location and size of gudgeon pin in both pistons, all that boring stuff.
Make your own decision.
So, seems like a null issue - 1mm vs. 2mm. Even the performance companies adopted the VTX1300 as their platform back in the mid-to-late 2000's. Probably cheaper to find a good 1300 starter bike than upgrade the 1100 to something substantial.I can suggest: Designed Performance for help. www.designedperformance.com
A few years ago, using the early design like you/me have, they did a "serious" mod to this type engine. They could help more than us poor smucks who don't have the money/resources for anything more serious than pipes/carb adjustments.
You'll see that they have moved on to the "newer design" Honda VTX engines. But they could be a good source for possible piston/cam makers, valves or interchangable pistons for your project.
Hope this helps.
Ignetech do programmable units for most bikes, well priced tooEven the big bore kit for the 1300 adds minimal HP when coupled with all the other mods. It claimed a 20% increase for slugs, cams and something else i cant remember. But, it needed pipes, intake and fuel controller for that.
We (the Fury guys) found a place that can crack the Honda ECU and reflash it. How does a 21% dyno verified increase with only a Cobra intake and Freedom Performance pipes sound? Everything else was ECU tweaking, raising redline, adding timing advance here and there etc. The guy who have done it say its a totally different bike and very well mannered even when you hammer it.
So, the short lesson is, its easier and possible to tweak what you have rather than tear it all down. That is, if youre FI.
There is no replacement for displacement at the top end...Ignetech do programmable units for most bikes, well priced too
I looked at one for mine but didn't here back to me so went OEM.... unfortunately I didn't find that my email provider spammed out there massage until I had the new (Gmail backup received the reply and it was cheaper than OEM)
I have often wondered in the Fury injection could be modded for my bike...that and the ignetec could be interesting....if i had the time and money.... just because i like to tinker