1397 To 1441 Is It Worth It?

[busakiller]

Hey guys I have a 1397 in my bike right now and iam happy with it but I want a little more power..... I plan on taking the motor out and having the motor split open so the transmission can be built. So since it's out of the bike and opened is it worth swapping in a gen 2 crank? Maybe bump up the compression too? It's a drag bike and I do highway pulls with it. I don't daily drive it or joy ride it. Just drag race or highway runs. What kind of power could I gain and is it worth the money?

[Driver1976]

i have swap complete stroker engine to this bike i got 205 rwhp i changed crankshaft connecting rod and cylinder with piston also the camshaft but the camshaft should purchase pin from brcks please see the attached photo

[busakiller]

I already have cams. Iam talking about swapping the crank out. Bike makes 200 whp on c110

[Driver1976]

The gen1 crank haviyer than gen2 even the rod and pistons and the pin the gen 1 have 19mm pin the gen 2 have 18mm pin its better to swap the complete crank rod and piston

[Driver1976]

To get more power swap the complete harness to gen2 with ecu and throttle body so you will have 2mm bigger intake and 8 injectors you will fill much more power than crank​

[202mphbusa]

Crank will indeed give you more torque
MAX HP might not change if head and cams do not support it

[busakiller]

My bike is a gen 1. Not swapping to gen 2 stuff. Just curious if it's worth the money to go to a gen 2 crank? I know the torque will go up but will I gain 5 to 10 hp? Bike already has cams and ported head. Iam tempted to have the compression bumped up too.

[Scooby315]

I'd go turbo if I were to put the extra time, effort and money into it at that point.

[greg3852]

My bike is a gen 1. Not swapping to gen 2 stuff. Just curious if it's worth the money to go to a gen 2 crank? I know the torque will go up but will I gain 5 to 10 hp? Bike already has cams and ported head. Iam tempted to have the compression bumped up too.

Ever do this?

[202mphbusa]

Ever do this?

Looking for more already? a spacer plate and I have 90% of a turbo kit SITTING

[greg3852]

Don’t start. lol. I don’t need to turbo a 1397. I don’t need a turbo. I don’t need a turbo. I’ll just keep saying it.

[busakiller]

No I never went to a 1441. I just put nitrous on the 1397 motor. I also bought a gen 2 busa that's turbod. So I can drag race the 1397 nitrous bike and daily drive the turbo bike

[greg3852]

No I never went to a 1441. I just put nitrous on the 1397 motor. I also bought a gen 2 busa that's turbod. So I can drag race the 1397 nitrous bike and daily drive the turbo bike

Well that sounds pretty much perfect! nice.

[michael parris heuberger]

Well that sounds pretty much perfect! nice.

That is what I said. I do not really need 650+ RWHP. But I want it.

[busakiller]

Thanks. Hopefully over winter I can build the turbo motor and make some more power. Would like to crush some h2s....... nitrous is great on a 1397 or 1441.

[greg3852]

How big a shot you using on it?

[Johnnie Phatt]

High comp pistons will make more power than what you have now regardless of engine size
Balancing the rotating mass (crank rods and pistons) will make a happier motor with quicker spin up and reduced ET's
FWIW if you are going to get a new crank and bigger pistons do yourself a favour and put in Hi Compression pistons and stronger lighter rods too . Then balance the whole rotating mass since it is all apart anyway . the pistons will add to power and a balanced motor will be . noticably smoother, quicker to spin up and get to your max power quicker . When i did my old drag bike in that manner i saved significant time . Im sure most of that was from the pistons but the engine was smooth like water on a plate and spun up more quickly

[TurboBusa0704]

No I never went to a 1441. I just put nitrous on the 1397 motor. I also bought a gen 2 busa that's turbod. So I can drag race the 1397 nitrous bike and daily drive the turbo bike

Pictures please

[greg3852]

Pictures please

He’s got some videos in the video section of some street runs.