The bhp question.

[Wycombe Dave]

Sorry if this has been covered before but im new and l was wondering what sort of bhp other sv650's are getting on the dyno???? mines a k6 and l had it set up at PDQ near Slough with a full Akrapovic exhaust, k&n and power commander! it was 75.1bhp

[Sideshow#36]

I had mine set up at PDQ too. Top Guys! I have a Full M4 Sysyem, K&N, PCIII USB and its kicking out 78.2bhp (dynojet) system. On a Dynopro mine reads at 71.4bhp which is .6 below minitwins limit!

[boo86]

Mine gets 71.6 bhp at the back wheel. Which is also very slightly below mini-twin limits ;) I'll paste the graph. Mine is a 2000 carb version. Running a de-snorkeld bmc with an unknown exhaust and home made end can. 144 dynojet jets. or 140 can't remember.

[boo86]

http://img204.imageshack.us/img204/1661/marksbikepowercurvejn1.png[/

[URL]http://img204.imageshack.us/img204/1661/marksbikepowercurvejn1.png (http://imageshack.us)

this is the graph, as you can see carbs suck, check out the hole at 8k. This is on a dynojet dyno so it's proberbly massivly over optomistic !! I reckon a real life 66 bhp.

[niccollotto]

i got 71.2 on steve jordans dyno, its a K6 with BMC, Micron can and Suzuki re-map, interestingly with the baffle out it only made 1 bhp more from midrange to max but was running a bit too lean, suspect i'd get a better output with a power commander but i didnt want the expense, most important thing here is that all dyno's read different, theres no calibration standard for them....

[boo86]

Ref: "most important thing here is that all dyno's read different"

Exactly. That's the thing. Dynojet's in particular are notoriously optomistic

[Dangerous Dave]

SV800S makes 109.6 bhp and 63ft/Ib

[northwind]

DD wins :)

Dynos are pretty useless for comparison- so much down to setup, condition, operator, machine type etc. TBH if you're going to even try and compare then everything but dynojet is meaningless, yes they're not very accurate but they're the yardstick. Oh, and NEVER EVER EVER quote crank bhp :D Other good ways to get optimistic dyno figures- run it on a dealership dyno rather than a racetrack or race builder dyno, they tend to want to flatter their customers. And also, run it on a dyno owned by someone you've just paid to give it more power ;)

Mine when last run made, annoyingly, 79 and a half bhp. It should top 80 now, maybe clear 81, the fuelling up top wasn't quite right but I've never run it since. That was a DJ machine so if I'd really wanted a sheet that said 80, we could probably have just run it a few more times :D It's standard from the cam buckets downwards, and 40000 miles old- just run in. If I ever get these Busa pistons in, do my wee bit of crap headwork and bump the compression it should be kicking on the door of 85, which is really as high as I want to go on a stock bottom end.

[fastdruid]

y2k ~28k, akrapovic downpipes, scorpion end can, unmodified suzuki air filter/box, no jetting changes, needles 'shimmed', tank foam removed and tank spacered up.

70.6bhp on a dynapro

http://www.fastdruid.co.uk/temp/thumbs/640x480DSC03108.JPG

There was no power difference in between it and a minitwin in the real world[1] anyway.

Druid

[1] Was funny, exited barn behind one and sat the entire length of the straight exactly the same distance behind it, zero difference.

[Alpinestarhero]

Anything upwards of 69 bhp is a good power output IMO

I wonder what mine is making?

Matt

[Grinch]

SV800S makes 109.6 bhp and 63ft/Ib


Ooooooooh... the power....

[Alpinestarhero]

Ooooooooh... the power....

i gotta admit, I wanna have a go on that 800

can i have a go mista?

[Dangerous Dave]

I wanna have a go on that 800

can i have a go mista?
As long as you can pay for any repairs....