BN157QMJ Engine

darksideup83 · Post by **darksideup83** » Tue Jun 23, 2015 11:29 am

I'm looking to do a swap on my '85 spree and I just bought a '08 Znen Vitacci 150cc scooter with a BN157QMJ engine, looks like the standard GY6 but is it internally different?

1man8scoots · Post by **1man8scoots** » Tue Jun 23, 2015 10:16 pm

Hi, ya it has a different crank and the cylinder is particular to the block. So no bbk and variator options are less. Most qmj come with 13 to 16 inch tires, I have seen them with 12s but it was a vino style bike.. We called them the big wheel engines. I was never happy to see one come into the shop or get a phone call about one.
I would get a different gy6 150 if you can.

1man8scoots · Post by **1man8scoots** » Tue Jun 23, 2015 10:19 pm

Does yours have rear disc brakes?

darksideup83 · Post by **darksideup83** » Wed Jun 24, 2015 12:50 am

No, it has rear drums and the wheel is only 10"

1man8scoots · Post by **1man8scoots** » Wed Jun 24, 2015 1:12 am

I've only seen them with big rims, crazy. Obviously there's a sub model I've never seen. I know znen is the only people who make them for sure.

maddog · Post by **maddog** » Fri Jul 17, 2015 7:39 pm

I would scrap that idea, just get an elite-s and do it the right way!

boostedmax · Post by **boostedmax** » Sat Aug 15, 2015 12:47 am

There are short case (10" wheel) and long case (12"-14" wheel).

Im working on my second gy6 spree. They are a lot of fun but a little to much motor for the tiny frame.

With the motor pushed all they way to the stamped frame section the back wheel will still be sticking out.

Its a lot of modifications and money to get them proper

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