Time to mount some engines on the Vipers! Pretty basic setup here. It appears that they did a good job lining up the cross hairs on the firewall with the new cowl, so that's a plus!!
Pretty straight forward:
- Put cowl bottom on plane, measure to firewall
- Measure your engine from back plate to prop hub
- Subtract the engine from the measurement off the plane
- Add your cowl spacing to that number, and voila......your engine spacer length!
On these I ended up using about 1-3/16". So what you will need is an SWB 1" engine standoff kit and it comes with 1/8 and 1/16" precision spacers to get you to 1 3/16!!
Make sure you use 3/4"-1" fender washers on the back side of the firewall. I used a tin-snips to clip off part of the upper ones to fit properly.
Install with Nylock nuts and test fit the cowl top and bottom to make sure you are happy.