VRSC Bigger Bore Options From the Factory?

[sfarson]

Hey, when the '08's V-Rod's came with a bump in the displacement to 1250cc's, I thought there would be a factory option to go higher than 1250. While flipping through the pages of the P&A catalog I could find anything on this. Is Milwaukee offering a big bore kit for those wanting to bump 1130 or 1250 to something beyond?

[lakedrunk]

I've never really looked into it much (being that I could never afford it anyway) all them guys over at the 1130 site would have a answer for you fast. I was also thinking with all the 1250 08's they would have to have something bigger for the screaming eagles, but from all I know they don't. I'm sure there is aftermarket stuff you can get. Bad thing about all the 08's having the 1250 it really makes the price of the used screaming eagle Vrods go down.

[sfarson]

Thanks lake... I think it is indeed the case, no bigger bore option from the factory. 1250cc's is it. Not that I have a need for more than what the 1130 can deliver. Just curious. Don't recall a model from Milwaukee ever not having a bigger displacement option from the factory. Plus, I've always heard all kinds of bigger bore potential exists with the Revolution engine.

[EZE RIDER]

Yes there are big bore heads available. I have them sitting on my shelf in the garage because I couldnt pass up the deal, 329 to the door for the set thru Hales Harley Davidson on line.

[rjrivero]

Originally Posted by 1 MEAN MOTHER

Yes there are big bore heads available. I have them sitting on my shelf in the garage because I couldnt pass up the deal, 329 to the door for the set thru Hales Harley Davidson on line.

The heads will do nothing for the size of the bore of the motor. They are just bolted on the cylinders to control airflow in and out of the motor.

The bore is going to be determined by the cylinders. There is only so much space to machine out before you start cutting into the water jackets.

[EZE RIDER]

Originally Posted by rjrivero

The heads will do nothing for the size of the bore of the motor. They are just bolted on the cylinders to control airflow in and out of the motor.

The bore is going to be determined by the cylinders. There is only so much space to machine out before you start cutting into the water jackets.

As you might be able to tell I am not a mechanic but I was told depending on which piston liner you use they will accommodate the big bore pistons.

[Daniii]

Turbo, Steve........

[sfarson]

Originally Posted by Daniii

Turbo, Steve........

Ha! You first

Seriously, I thought I read back when the VRSCA was introduced all kinds of potential was built-in to the Revolution engine so series of displacement increases could me made for many years. So was mildly surprised when 1250cc became stock there was no option for something like a 1340cc V-Rod.

[Daniii]

It seems that going beyond 1250 creates interesting problems with long term reliability. 1340 seems to be a good reliable upper end. There are few (if any) 1550 motors running after a few thousand miles (I suppose something could be said about the abuse they receive). But Max has thousands of trouble free miles on his 1130 Turbo.

[Daniii]

Well, we just learned that Donald (OK VRod) went down last Friday when his 1430 locked up at speed. I stand by my previous post.