So about 6 months ago I bought an '87 650sx and the seller recommended this forum if I had any questions. i'm not completly clueless with Jet skis (been riding sit downs for a while), but I just cant seem to figure out this exhaust.
To start, the ski is extremly loud and this wouldn't bother me except I go out on the water early and my neighbors would complain.
The seller told me that the ski had a Factory pipe, but I pulled it out and it seems to look just like the stock pipe, (correct me if im wrong).
Now I was thinking the loud sound could be due to a gutted out waterbox. the seller had no mention of a aftermarket box but this does not look like the one in the manual, it look more like the west coast though there are no WC markings/label. I also saw that there is a bolt in the side, what is its purpose?
I found that there are 3 water inputs into the exhaust pipe and one has been welded shut. could the sound be due to it running dryer? I could definitly drill it out if neccesary.
I just really need to get this ski quiet before the summer comes, any help is appreciated!
And if this even matters, my mods are:
skat trak prop
mikuni carb
west coast head
ocean pro ride plate
west coat intake grate
west coast intake manifold
k and n air filter
To start, the ski is extremly loud and this wouldn't bother me except I go out on the water early and my neighbors would complain.
The seller told me that the ski had a Factory pipe, but I pulled it out and it seems to look just like the stock pipe, (correct me if im wrong).
Now I was thinking the loud sound could be due to a gutted out waterbox. the seller had no mention of a aftermarket box but this does not look like the one in the manual, it look more like the west coast though there are no WC markings/label. I also saw that there is a bolt in the side, what is its purpose?
I found that there are 3 water inputs into the exhaust pipe and one has been welded shut. could the sound be due to it running dryer? I could definitly drill it out if neccesary.
I just really need to get this ski quiet before the summer comes, any help is appreciated!
And if this even matters, my mods are:
skat trak prop
mikuni carb
west coast head
ocean pro ride plate
west coat intake grate
west coast intake manifold
k and n air filter