06-05-2009, 08:11 AM #1
Riva rear air. Screen vs no screen.
I have heard alot about how restricive the red RIVA screen is.
I did a back to back last night with a hot motor and found that there was 20 rpm difference. This was done by placing the filter on with bolts and no nuts
on the bottom so I could remove faster. Last weekend I saw 40 rpms more with out the filter but had to stop and remove the nuts which took about 10 mins.
I also marked the distance to see if it got there any quicker. It was the same
and the 20 rpms came at the very last second.
For 20 rpms I just can not see exposing my motor to the stuff that sits on top of the screen.
06-05-2009, 09:22 AM #2
Did you cut holes in your grab handle? I didn't notice last weekend out. I think where we ride you need something for sure to protect the SCer and engine.
06-05-2009, 09:29 AM #3
06-05-2009, 09:38 AM #4
I have just left it alll as is. The gap aroound the seat is more than sufficient for air to get to the intake, and probably loose quite a lot of the water en-route.
Now I tried mine in heavy surf a month or so ago, it had signs of salt water on the top.
The thing with this filter is it breaks any water hitting it into fine droplets, which the SC seems to be able to handle, however if it had water sat on top, I have left a sufficient gap around the intake trumpet for air to be also dragged in from inside the engine, not too big, but enough to get air in there.. plus it helps ventilate the engine bay.
Another mod I did was to strategically place holes at the bottom of the trumpet, so any moisture would drain through them and drip out the bottom when the SC is not processing any air as such.
Seems ok, no problems encountered up to press,
06-05-2009, 04:37 PM #5
- Join Date
- Jul 2006
I swapped out the Red stuff for normal porch screen.. it prevents anything from going into the SC and has zero restriction, works great.
06-05-2009, 07:29 PM #6
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