Novarossi Factory Head Bolt Torque Settings

[RonShaw]

Boaters,

I had a good customer, Gene Duncan, reach out to me requesting the factory head torque settings for the Novarossi engine line. I just received them this morning and thought I would share them with everyone. Thanks.

21 Sport Engines- 2,4 nm

21 KEEP Engines- 2,4 nm

46 Engines- 2,2 nm

67 Engines- 2,2 nm

91 Engines- 2,2 nm

 

[mr_fons]

what does that convert to inch pound or foot pounds?

 

[Mike Hughes]

most torch wrenches have the metric setting on them as well as standard.

Here is conversion chart.

https://www.google.com/search?q=metric+conversion+foot+pounds+to+newton+meters&oq=foot+pounds+to+metric+&aqs=chrome.1.69i57j0l3.20461j1j7&sourceid=chrome&ie=UTF-8

 

[mr_fons]

Thanks Mike, I'll need to check that out.

 

[John Beardslee]

Marty and I use 10-12 in/lb on all head bolts from 21 to 91 engines. And 36 in/lbs on the glow plug but I double click it to get a little more, my torque driver tops out at 36 and Id like to try 38-40. I havent had a plug come loose since working up these torque numbers

Thanks John

 

[Hydro Junkie]

I just did some playing around and came up with the following:

<.21=2.4 Nm=1.77 ft/lb=21.24 in/lb

>.21=2.2 Nm=1.62 ft/lb=19.44 in/lb

The newton meter numbers are from above, the ft/lb numbers are from https://www.metric-conversions.org/energy-and-power/newton-meters-to-foot-pounds.htmand the in/lb numbers are ft/lb multiplied by 12

With all that said, If you have numbers that work for you, go for it

 

[RonShaw]

This will help you find the converter!!! Thanks.

 

[mr_fons]

Recommended Maximum Torque (steel screws into aluminum)

Screw Size/ Torque/ Socket Size

2.0 mm/ 5-7 in-lb/ 1.5 mm

2-56/ 6-8 in-lb/ 5/64"

2.5 mm/ 8-10 in-lb/ 2.0 mm

4-40/ 12-14 in-lb/ 3/32"

3.0 mm/ 13-15 in-lb/ 2.5 mm

5-40/ 14-16 in-lb/ 3/32"

6-32/ 17-21 in-lb/ 7/64"

4.0 mm/ 20-24 in-lb/ 3.0 mm

8-32/ 22-26 in-lb/ 9/64"