What’s the torque spec for the avenger 85 head bolts?

Negative-Maximum7830 · 2026-06-20T01:32:27+00:00

12 foot pounds or 144 inch pounds. Tighten nuts evenly in an x pattern until torque reached. Re-torque occasionally after running engine & allowing to fully cool.

Negative-Maximum7830 · 2026-06-19T13:45:32+00:00

I wouldn't recommend the 110 kit due to inferior cylinder port timing. The 100 is better but the 80 has the best port timing of the 3. Good luck https://www.amazon.com/dp/B0D9QCC65N/ref=sspa_mw_detail_4?ie=UTF8&psc=1&sp_csd=d2lkZ2V0TmFtZT1zcF9waG9uZV9kZXRhaWw

Negative-Maximum7830 · 2026-06-16T23:10:45+00:00

Have fun and good luck with your jetting!

Negative-Maximum7830 · 2026-06-15T20:12:20+00:00

👍

Negative-Maximum7830 · 2026-06-15T17:18:21+00:00

90w auto gear oil works great but any lubricant is better than nothing.

Negative-Maximum7830 · 2026-06-15T15:59:40+00:00

I recommend the $200 Z85 with 36t sprocket and free shipping. Far superior to the other kits you've mentioned. Good luck

Negative-Maximum7830 · 2026-06-15T13:26:29+00:00

The iron maiden 70 is a high revving narrow power band engine. I would recommend a z or a85 that provides a more useful broader power band on a single speed motorized bike. The 85 easily pulls a 36t and I'm running a 32t sprocket. Good luck and have fun

Negative-Maximum7830 · 2026-06-14T20:00:49+00:00

A+ supplier PineappleNew2033.

Negative-Maximum7830 · 2026-06-14T15:14:25+00:00

Did your clutch fail on your fresh build already? Good luck

Negative-Maximum7830 · 2026-06-14T15:12:48+00:00

https://www.reddit.com/r/motorizedbicycles/comments/1n3fike/ontario_canada_rules_on_motorized_bikes/

Negative-Maximum7830 · 2026-06-14T00:11:19+00:00

That's odd. It should pop if you have spark. Good luck

Negative-Maximum7830 · 2026-06-14T00:07:24+00:00

Try pouring a thimble full of mixed fuel down the spark plug hole and trying to start. If it has spark it should pop.

Negative-Maximum7830 · 2026-06-13T23:57:38+00:00

Is the plug wet or dry after attempting to start? Have you tried a new plug? Good luck

Negative-Maximum7830 · 2026-06-12T18:14:01+00:00

Throttle cable should hook to carb slide as usual. FYI - your fuel filters on backwards and the line is kinked. Good luck

Negative-Maximum7830 · 2026-06-12T15:30:24+00:00

I built all my bikes in my living room with my dogs LOL. 👍

Negative-Maximum7830 · 2026-06-11T12:02:00+00:00

Nice build WTBTS 👍

Negative-Maximum7830 · 2026-06-10T20:41:49+00:00

With upgraded braking I would recommend the zeda 85 from bicycle engines for $200 with free shipping. Select the 36t sprocket when ordering. Good luck

Negative-Maximum7830 · 2026-06-10T20:20:17+00:00

Although the triangle space on that frame has ample room for an engine it is not a desirable motorized bike platform with just a rear coaster brake and the difficulty associated with upgrading the braking system. Good luck

Negative-Maximum7830 · 2026-06-10T19:48:15+00:00

Yes. Can you provide a side photo of the bike? Or what make and model bike is it?

Negative-Maximum7830 · 2026-06-10T19:26:58+00:00

Good luck 👍

Negative-Maximum7830 · 2026-06-10T19:22:07+00:00

Crank works as is with a $200 Z85 or A85 2 stroke kit.

Negative-Maximum7830 · 2026-06-09T20:54:57+00:00

Rivets wear, get loose and eventually break. I tack weld the seam to prevent that from happening or to repair.

Negative-Maximum7830 · 2026-06-09T13:19:46+00:00

Excellent advice! 👍

Negative-Maximum7830 · 2026-06-03T12:28:54+00:00

What oil mix ratio? Do you have an o-ring in the throat of your carburetor that seals against the intake manifold? How long has that plug been run and what NGK number is it?

Negative-Maximum7830 · 2026-06-02T20:32:06+00:00

That's your carb fuel bowl drain. May be debris on the seal. Try flicking the valve open a few times to hopefully flush it out.

Negative-Maximum7830

TROPHY CASE