Originally Posted by Chris Reilly (Post 12976397)

The crank pin on a RB and Nova Rossi are different sizes.

Originally Posted by wingracer (Post 12947267)

Check the size of your crank pin. If it's 5mm, any Nova R rod will work. Older RBs used a smaller pin, like 4.9 I think. Those will need an old RB rod. Roleof knows the exact dimensions, I could be wrong.

Originally Posted by hambone (Post 12976493)

Nova .195", RB .198". Yes you're missing something.

Originally Posted by 22Racer (Post 12976539)

This has always been the case, actually .196 on the Nova. On some newer Rb engines they may have the .196 size. When I used to rebuild alot of Rb's and the crank was worn, a used nova rod would fit great saving some $.

Rex

Originally Posted by Eivind E (Post 12977105)

Why on earth would you people be using imperial measurements when measuring products designed and manufactured in countries which use metric? Makes no sense whatsoever.

Originally Posted by hambone (Post 12977258)

you stated crankpins are same size but they aren't. However, my RB Blast V12 has a full circle single slugged crank that has the nova sized(.196") crankpin.

Originally Posted by Eivind E (Post 12977298)

So first you say I'm wrong.
Then you say I'm right.

Are you a bit confused?
Remember the user asked about a Blast V15.

Originally Posted by hambone (Post 12977324)

I wouldn't be surprised if the same version differs.

Originally Posted by Eivind E (Post 12977345)

The only difference between your V12 and the V15 is the V15 has two slugs on the crank, conrod part number is the same and everything. So basicly, as far as I can tell, he should be able to use the cheap Go or Alpha con rods.

Originally Posted by A7racer (Post 12975844)

I have a Blast V15 and the rod has some slop in it already. RB replacement rods are too expensive and would like to know which of the Nova rods will fit this? I know I read somewhere to measure the crank pin but I don't have measuring tool and Im hoping someone here knows off hand....any other rod other than a Nova that will fit? Alpha, GO etc? I know the quality is lower on the other brands but I cant see spending the coin for an OEM rod for such a budget engine at this point.

Originally Posted by Herrsavage (Post 12977553)

How's the performance of it otherwise?

IMO rod-play and the need to change them is way overrated..