Can anyone identify this stroker crank?

[Watty]

Hi guys...

I'm just trying to determine what sort of stroker crank I have here. I'm told that it's a rad crank but I'm not sure. Short of the pictures themselves, the only mark on them is a 74 on the webs.

Anyone know?

Cheers...

 

[RMBC Freeride]

I'd say it's a RAD or more likely a Pro-tec billet +6mm stroker crank. Pro-tec definitely used stock rods which is what those look like to me...

hope that helps

 

[waterfreak]

6 mm rad

 

[Superjet3]

6 mm rad

Protec cranks have round webs. Definatly a RAD

 

[waterfreak]

All you need now is a nice Lamey cylinder !

 

[SUPERTUNE]

Rad crank for sure! not Pro-Tec...
Like IHOP said, they do have round flywheels and angles cut into the side of them.

 

[Shonuff]

How did you know it was a 6mm RAD?

 

[Matt_E]

I'm guessing because it says 74 on the crank.

 

[Watty]

Awesome! Thanks for the quick replies!

I wasn't sure if they were stock rods or not as they have a smooth finish rather than the rough kind of finish the 701's have. In saying that, I have zero experience with stroker cranks.

I plan on building a big bore stroker with it, but I do need to replace some bearings first...

 

[Shonuff]

I'm guessing because it says 74 on the crank.

Hook me up, Matt. Is 68mm standard stroke?

 

[Matt_E]

Yes. :bigok:
If you paid more attention to your Superjet and weren't all wrapped up in your Kawi :nutkick:, I wouldn't have to tell you that.

 

[Shonuff]

SuperJets . . . plural.

 

[Mouthfulloflake]

you got superjetage?

I thought you were team green?

 

[Watty]

So, If I am to purchase new rods for this crank, what would I be looking for?

From what I can measure, it looks like the rods are 128mm from centre to centre of rod ends. What engine came with these rods stock? I'm sending it off to be rebuilt, and I want to make sure I can source all the parts first at a cheaper price!

Cheers...

 

[SUPERTUNE]

You have a PM sent to you!
Chuck