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620 Posts
Who here has done some of these mods? The search feature here sucks (I can say that since I wrote that pathetic piece of crap) so I didn't find anything on the topic. I promise to work on the search feature VERY soon!!!
Since my Grizz burns a lot of oil (roughly a quart every 15 hours), I'm giving serious thought to, at the very least, new rings. But I figure while it's apart, I might as well do a 686, and a cam. Then of course I might as well send the head off to Craycraft for some porting too. So one thing leads to another.
While I'd look forward to the power, I'm wondering what it'll do to the fuel economy. I don't wanna lose much, but some more low-end torque would be nice. The Grizz feels very undergeared in low range (meaning it needs more low range), at least compared to my SP800, so the extra torque would be really nice.
It's always done pretty good on gas. I'd say overall average is 15 mpg, with upper-teens fairly likely if there isn't too much slow-going low-range stuff... and even more than that if it's largely fire roads.
Cams... I see that both Hotcams and Webcams makes one for this. The specs show duration to be very similar between the two. The Hotcams cam appears to be the more radical of the two, with a bit more lift. I'm not really sure which way to go here.
It'll be neat to see if this thing ends up with more power than my SP800.
Any input is appreciated!
Rob
Since my Grizz burns a lot of oil (roughly a quart every 15 hours), I'm giving serious thought to, at the very least, new rings. But I figure while it's apart, I might as well do a 686, and a cam. Then of course I might as well send the head off to Craycraft for some porting too. So one thing leads to another.
While I'd look forward to the power, I'm wondering what it'll do to the fuel economy. I don't wanna lose much, but some more low-end torque would be nice. The Grizz feels very undergeared in low range (meaning it needs more low range), at least compared to my SP800, so the extra torque would be really nice.
It's always done pretty good on gas. I'd say overall average is 15 mpg, with upper-teens fairly likely if there isn't too much slow-going low-range stuff... and even more than that if it's largely fire roads.
Cams... I see that both Hotcams and Webcams makes one for this. The specs show duration to be very similar between the two. The Hotcams cam appears to be the more radical of the two, with a bit more lift. I'm not really sure which way to go here.
It'll be neat to see if this thing ends up with more power than my SP800.
Any input is appreciated!
Rob