DIY Tank raisers

Has it affected the fuelling in any way?

I suppose bing a pointy the 'brain' self adjusts to compensate??

I haven't a clue, not even started the engine since I fitted them

Don't see the point myself. But I do like the price for such a modification.

[northwind]

Originally Posted by Blue_SV650S

Has it affected the fuelling in any way?

On the curvy it seems to, once you get rid of the other restrictions (ie tank foam, stock filter) but I wouldn't want to tell you how much.

[yorkie_chris]

We shall see, my bike may accidentally jump onto a dyno soon, so I'll let thee know a before and after.

[northwind]

Better be exactly 33bhp or you'll incur the WRATH OF SV650.ORG

I've never bothered to a/b it, it costs me £10 a run through youngs so I just fitted the parts, factory pro reckon it does good though. I do know that when I was running lean up top, removing the spacers seemed to take the worst of the 6000rpm hesitation away- though that could be placebo as much as anything else.

Originally Posted by yorkie_chris

We shall see, my bike may accidentally jump onto a dyno soon, so I'll let thee know a before and after.

Originally Posted by northwind

Better be exactly 33bhp or you'll incur the WRATH OF SV650.ORG

I've never bothered to a/b it, it costs me £10 a run through youngs so I just fitted the parts, factory pro reckon it does good though. I do know that when I was running lean up top, removing the spacers seemed to take the worst of the 6000rpm hesitation away- though that could be placebo as much as anything else.

Er ... I was mainly meaning 'on the move' ... unless you get forced air (not just cooling fan) on a dyno, how on earth are you going to know how it will run at speed? Opening up the tank gap will increase the forced? airflow into the airbox ... this will potentially mess with the fuelling ...

[northwind]

It's not going to be significantly forced, since it's behind the fairing, it just just opens up the air route slightly more than it is already. If it was having a forced air effect, the easiest exit for the air would be out the back of the tank rather than through the filter I reckon. I suspect that it's the extra clearance between tank and filter top that makes the difference, it's suprisingly tight in there. But, that's an educated guess, could very well be wrong.

[yorkie_chris]

Originally Posted by northwind

Better be exactly 33bhp or you'll incur the WRATH OF SV650.ORG

Getting the dyno printout to make sure of that

Wouldn't want to have anybody having to climb back on their soapboxes now would I

[yorkie_chris]

Originally Posted by northwind

I suspect that it's the extra clearance between tank and filter top that makes the difference, it's suprisingly tight in there. But, that's an educated guess, could very well be wrong.

Thats my guess too, we shall see.

Forced air could be a problem on mine, as its nekkid, but if it starts feeling lean at speed then thats where I'd start.

But air is a finicky thing, could even end up with extra turbulence under the tank at speed, which could increase restriction.
(see the earlier thread about forced air where I was jabbering on about how finicky airflow is)