RG150 won't make power at high revs

**Jase W** · 3rd May 2009, 17:05

Hello,
I have been furiously prepping my RG150 for the VMCC series, and thought I had it all sorted. At a trackday a couple of weeks ago it was not revving much past 10k and wasnt making any power, I quick check discovered the powervalves werent opening. A bit of creative cable adjustment forced them permanently open, which then made the bike run sweet as in the powerband.

This weekend I took the powervalves out (the actuator was faulty and I had no worries riding without them), and after just taking it for a ride today it is now once again not making any power in the powerband!!

I know I am not the only one running without powervalves, so can anyone tell me if there is something I need to do? I have just removed all of the gear, nothing else (I was told this would be sweet as).

So far I have also checked the plug & airfilter. Both are fine.

When the fuel is left on, I have noticed some leaking from the carb overflow hose, however I figured this was not a major (as it drains to a bottle and doesnt happen while running as far as I can tell) and could be fixed at a later date. Could this be related?

Any help would be pretty hugely appreciated - I only have 2 weeks to get it sorted!!

**quallman1234** · 3rd May 2009, 18:00

Hey mate,

It's kyle, the guy who gave you a hand at the cdmtc track day.

I believe you need powervalve blanks (just something what goes into the slot as the same shape as the powervalve when fully open).
if you want to take them out.
As there is now a big empty space. What is a big thing for a 2 stroker.
I don't think i have a spare actuator.
But you could try pete. The best thing too do is put them in properly.

I might be wrong, your best bet is too give pete jones a ring.

How high is it revving now?

**Racey Rider** · 3rd May 2009, 19:22

So is removing the power valves a legal modification in Vic club streetstocks is it?

**Jase W** · 3rd May 2009, 19:41

Ahh I had a feeling that might be the case. Cheers for the help.

racey: I dont see why it wouldnt be as it doesnt increase power, its just one less thing to worry about breaking.

**ajturbo** · 3rd May 2009, 19:47

Originally Posted by Racey Rider

So is removing the power valves a legal modification in Vic club streetstocks is it?

no it is NOT legal to do this....

but as kyle said.. it probably will not run very well...

**ajturbo** · 3rd May 2009, 19:50

Originally Posted by Jase W

Ahh I had a feeling that might be the case. Cheers for the help.

racey: I dont see why it wouldnt be as it doesnt increase power, its just one less thing to worry about breaking.

you should read the rules on the VIC Club's web site...

Street STOCK class...

STOCK meaning... STOCK!!!!

**Jase W** · 3rd May 2009, 20:02

I'm not modifying it, just removing stuff. Bottom line, I'm not making any more power and i'm making it a little more challenging to ride. I may even learn much better riding habits this way rather than relying on the powervalves to save me if I mess up and end up out of the powerband. Looks like they'll be going back in though - I'll just adjust the cables so they are constantly open, that way there will be no protests about its legality.

**ajturbo** · 3rd May 2009, 20:39

Originally Posted by Jase W

I'm not modifying it, just removing stuff. Bottom line, I'm not making any more power and i'm making it a little more challenging to ride. I may even learn much better riding habits this way rather than relying on the powervalves to save me if I mess up and end up out of the powerband. Looks like they'll be going back in though - I'll just adjust the cables so they are constantly open, that way there will be no protests about its legality.

good boy... lol

**quallman1234** · 3rd May 2009, 23:24

No it is not an illegal mod.
In fact it is making the bike worse to ride. (Assuming you put blanks in).
Because you loose all your bottom end.
Its basically like locking the power valves open. (Assuming you put blanks in).
It won't run very well at all without blanks. As there is essentially a new hole in the barrel.

Like you say, put em back in. tbh that bike had some perk too it the whole 50m i rode it for =).
And there was less of a risk in them falling down the barrel.

I'll have another search for my spare actuator.

**quallman1234** · 3rd May 2009, 23:36

Originally Posted by ajturbo

you should read the rules on the VIC Club's web site...

Street STOCK class...

STOCK meaning... STOCK!!!!

AJ its not unusual for people to put "blanks" in the RG150's.

You should know this matey.

AJ, i will be bringing a spare RG150 for the first couple rounds. Will remind you when we get there.

**Jase W** · 4th May 2009, 06:14

Yeah it ran sweet as with cables adjusted, I just didn't consider that the powervalves still needed to be there even if not in use!

**ajturbo** · 4th May 2009, 06:22

Originally Posted by quallman1234

AJ its not unusual for people to put "blanks" in the RG150's.

You should know this matey.

AJ, i will be bringing a spare RG150 for the first couple rounds. Will remind you when we get there.

i meant taking them OUT...

**Str8 Jacket** · 4th May 2009, 07:24

Originally Posted by quallman1234

AJ, i will be bringing a spare RG150 for the first couple rounds. Will remind you when we get there.

Thanks dude!

**quallman1234** · 4th May 2009, 12:19

Originally Posted by Str8 Jacket

Thanks dude!

No worries, just in case someone's go's bang.

Crap tyres but we can just swap rims. Hopefully it won't be needed. My bro's bikes coming up so i might as well bring a spare forever one. Its in decent condition now after its cliff exclursion.

Okay AJ =).

**ajturbo** · 5th May 2009, 18:45

Originally Posted by quallman1234

No worries, just in case someone's go's bang.

Crap tyres but we can just swap rims. Hopefully it won't be needed. My bro's bikes coming up so i might as well bring a spare forever one. Its in decent condition now after its cliff exclursion.

Okay AJ =).

i have a set of TT900's in the shed......