sv 650s mk1 quarter mile

whats the best quarter mile times people have had out of their mk1 sv650s

got
60ft ET 1.7928
330ft ET 4.7416
1/8 ET 7.3098
1/8 MPH 94.50
1000 ET 9.5871
1000 MPH 105.54
1/4 ET 11.5667
1/4 MPH 113.19

over the weekend at santapod
running on avgas/unleaded mix
145 main 17.5 pilot 1 3/4 air
race loom
dyna rpm limiter
auto shifter using limiter
retarder disengaged
15t on front 44t on rear

[yorkie_chris]

Why avgas? You upped compression?

The higher octane rating stops the fuel from prematuerly exploding and contains a trace of lead to protect the valve seats
Engine is standard compression. 12-1 or something can't quite remember.
Makes a huge difference in power both on dyno 69 with no end can on standard jets
And on the strip

[andrewsmith]

Originally Posted by madandy

The higher octane rating stops the fuel from prematuerly exploding and contains a trace of lead to protect the valve seats
Engine is standard compression. 12-1 or something can't quite remember.
Makes a huge difference in power both on dyno 69 with no end can on standard jets
And on the strip

69 brake on Avgas! The motor should be chucking a lot more power out on Avgas
That is a waste of cash TBH 95/ 97 would give you the same power.

[yorkie_chris]

Originally Posted by madandy

The higher octane rating stops the fuel from prematuerly exploding and contains a trace of lead to protect the valve seats
Engine is standard compression. 12-1 or something can't quite remember.
Makes a huge difference in power both on dyno 69 with no end can on standard jets
And on the strip

I'm not convinced, could you post the data from back to back runs?

Avgas is meant to burn in big air cooled lycomings and stuff which run at 3000rpm with twin plugs, rather slow burn. Unless you NEED to prevent preignition or detonation because you're running some stupid compression ratio or masses of boost there's no point in it. IMO.

Regarding preignition, standard pump fuel does not preignite in a stock engine, nor in mine with pipe, filter, hot cams etc.

[yorkie_chris]

Originally Posted by andrewsmith

The motor should be chucking a lot more power out on Avgas.

Explain why please.

[andrewsmith]

Originally Posted by yorkie_chris

Explain why please.

Its a higher ron rating to road fuel. But you've already corrected me in your response to madandy.

Yes i know avgas is formulated to be run at altitude