big block warrior build

[twistedstang]

Pretty much as far as I can go until I get my driven pulley and a belt. I started the motor on the bike last night.

 

[OND]

Woo Hoo...thats a big old engine, and it fits like a glove ! :thumbsup:

 

[twistedstang]

Got the driven pulley today. It fits!

 

[ludicrous speed]

quick question,can you lay a tape measure across your motor W torque vertor on it and tell me what the width is?
preferably With the cover,if you are using one...:thumbsup:

and,what is a 420 in terms of Torque produce?
those belt clutches can handle that?

 

[twistedstang]

Ready for this......from edge of pullstart cover to the tip of the crank bolt on the converter is 17 1/4" !!!! She's wide! That's with the converter fully seated on the crank. I may have to space it out a 1/4 or so to line up with the driven pulley, if I push the driven pulley in , it'll hit the head so it'll be the driver that has to move out.

Stock 420 is rated at 18.5 ft/lbs. I'm hoping the 40 series holds up to it

 

[Phil1958]

beautiful work:thumbsup:

are you planning any mods for the engine?

 

[twistedstang]

Not yet. I wanna get it running and see what we can do with it stock.

 

[OND]

Probably pull trees down....that thing should be strong. :thumbsup: Nice Job !!!

 

[Sandcracker]

A man after my own heart! :thumbsup:

I had to flip my sprocket too.

 

[twistedstang]

Haha! Nice. So how's it run? What gearing are you using and what mph is it getting you?

 

[Sandcracker]

Haha! Nice. So how's it run? What gearing are you using and what mph is it getting you?

That's only a 270cc engine. I can't quite remember my jackshaft gear size. I'll have to count later. I also haven't had an open stretch to really get an accurate top speed. The street I live on has a lot of stop signs, and until now I've only had rear brakes, so it takes me a long time to stop, but I used GPS on my phone, and I got up to 46 before I chickened out, but it was still accelerating.

 

[twistedstang]

Got it running yesterday! Still needs a throttle setup, brakes, a fuel tank, and a different header. I shot it down the driveway once with a tank between my legs and a finger on the linkage....then I decided not to visit the hospital

 

[OND]

I shot it down the driveway once with a tank between my legs and a finger on the linkage....then I decided not to visit the hospital

Good Idea !! :laugh:

 

[twistedstang]

Made up a throttle bracket today at work. If it actually fits ( and works), I'll make something a little fancier.

 

[twistedstang]

The plate worked great. I've gotta trim it a little to clear a bump in the fan cover.o took the bike for a quick ride. Acceleration was great with the current gearing (14 tooth on jackshaft and stock rear sprocket). I hit 47 mph and was still climbing when I broke something

 

[twistedstang]

When I put everything together, I could feel some wobble in the shaft. I think it was a combination of cheap bearings and both bearings being inside the framerails while both the pulley and sprocket hung off opposite ends of the shaft.

 

[Bill Ellerby]

Definitely the wrong bearings.

 

[twistedstang]

The bearings and jackshaft came in a kit from asuza

 

[OND]

Looks like cheap bearings.

 

[twistedstang]

That was my initial thought. Maybe I'll pick up a new shaft and some better bearings and give it another go before I start chopping and welding.