death of my k&b 7.5

[Michael Hall]

Well my k&b crank decided it was time to let go to day, when it stopped instantly I knew something had let go, I was expecting to find a broken con rod. Only parts that are useable is the top housing and pto

 

[Kez]

I have never seen a crank failed like this before. That's too bad as you will have problem finding parts.

It looked like a piece of metal had galled in the piston. I wonder if that's what caused the crank to break.

 

[james tomlin]

the older 3.5 would break like that i have had several break on me.

 

[SayMikey]

Very common on the 8701 KaBoom the 8702 was much better. I cant count the ones ive seen

 

[Dick Loeb]

Ebay usually will have a couple,but try to find a 8702

 

[donald fleury]

got some stuff maybe I can get you on the go sent you a pm

reguard Donf

 

[Michael Hall]

I have never seen a crank failed like this before. That's too bad as you will have problem finding parts.

It looked like a piece of metal had galled in the piston. I wonder if that's what caused the crank to break.

It was the crank that let go and a piece has taken a bit of the piston, annoying too as it was a mint piston and sleeve.

I have plenty of spares and a couple of new powerheads and a later one with the bigger crank but I think its time for a rossi powerhead

 

[Bob Kensill]

If you send me your engine, I will fix it for you for free.

 

[RonShaw]

I have never seen a crank failed like this before. That's too bad as you will have problem finding parts.

It looked like a piece of metal had galled in the piston. I wonder if that's what caused the crank to break.

It was the crank that let go and a piece has taken a bit of the piston, annoying too as it was a mint piston and sleeve.

I have plenty of spares and a couple of new powerheads and a later one with the bigger crank but I think its time for a rossi powerhead

Upgrade to the 8702 crank, front and main housing, and pipe timing P/S and you will not be sorry. This combo is much stronger than a Rossi any day. I would run this and hold off on a new purchase as the new NovaRossi 46 outboard powerhead will be available soon. That would be the only engine I would even consider as an upgrade to the 8702 K&B.

 

[Michael Hall]

Where can I get a piston and sleve with pipe timing for my 8702? K&B are out of stock

 

[RonShaw]

Try Joe Monohan [email protected]

If he doesnt have everything you need let me know. I can help you out of my parts stock.

 

[Michael Hall]

Try Joe Monohan [email protected]

If he doesnt have everything you need let me know. I can help you out of my parts stock.

Thanks, its just the piston and sleeve I need

 

[RonShaw]

Get the 17mm crank and housings if you can swing it. That will convert it to an 8702 and really light up that K&B!!!

 

[Michael Hall]

Get the 17mm crank and housings if you can swing it. That will convert it to an 8702 and really light up that K&B!!!

I already have an 8702, needs a new top bearing which I have and a new piston and sleeve wouldnt hurt