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Old 10-11-2009, 07:51 AM   #31
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I know a buddy of mine had the same issue and he switched to a rb carb and his tunning issues went away. I don't know if an os carb will fit, but if so, i'm sure there are a few around the track from all the wore out v-spec's.

on a side note, i'm suprised to see that you have any smoke wile getting 17 minutes a tank....
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Old 10-11-2009, 08:19 AM   #32
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Put a throttle return rubberband on the carb..

Sounds as if the carb is staying open as the novarossi/rb style boots are very firm. Put the rubberband on it and your problem should be gone.
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Old 10-11-2009, 10:15 AM   #33
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Originally Posted by j_blaze14 View Post
i had that happen twice, you try to fatten the bottom but it goes from super lean to super fat for no reason. top is good but temps get high anyways. check the case where the mount screws go and see if there is "silver slime" around them. i cracked 2 cases on the left mounting wing.
its a brand new case it better not be cracked...

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Originally Posted by jrwoodchuck View Post
I know a buddy of mine had the same issue and he switched to a rb carb and his tunning issues went away. I don't know if an os carb will fit, but if so, i'm sure there are a few around the track from all the wore out v-spec's.

on a side note, i'm suprised to see that you have any smoke wile getting 17 minutes a tank....
wtf dose that mean? you dont know anything.... Doug just stay out of my d8 and grenade threads.... obviously your hear just to bash me... my grenade never made 17mins a tank 13 yes..

Quote:
Originally Posted by Black View Post
Put a throttle return rubberband on the carb..

Sounds as if the carb is staying open as the novarossi/rb style boots are very firm. Put the rubberband on it and your problem should be gone.
never run my car with out a rubberband around the carb.
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Old 10-11-2009, 11:23 PM   #34
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Getting 13min a tank with a gotech grenade?At a race pace?All i can say is wow!
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Old 10-12-2009, 10:54 AM   #35
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Getting 13min a tank with a gotech grenade?At a race pace?All i can say is wow!
run time is all relevant to wheel spin. and acutally the last track design we had was mostly flat so i could lean the motor out to get that extra min or two

realistically my motor makes around 8 to 9 mins temping at 220 230...
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Old 10-14-2009, 11:20 PM   #36
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Originally Posted by houston View Post
i will say the go carbs (unless fixed) leave a little room for improvement .

so hard to say as there are many variables but usually a tad lean on low if after full throttle applied and engine revs up a little then idles normal in less than 3-4 seconds . if the engine idles up and then has a nice blubbery sounding idle for more than 3-4 sec. then it is usually rich with too large of an idle gap . too lean lsn leaves engines with tingy sounding idle and usually minor lean bog when running unless overcompensated with richer than normal hsn . like i said , could be one of many things though . like said before , sticky carb or linkage .
Houston (or anyone else) ... I am having a similar problem with a motor, so hopefully you can advise:

After a 2-3 minute pre-heat warmup, engine idles great, rev the throttle and the motor returns to idle immediately. After 7 min. heat, same thing. Everything good. After 20 or 30 minute main, idle is going bing-ba-bing-bing (very high). Motor finishes the main anywhere from 230-260 (on different nights), but the idle at the end of the main is always bing-ba-bing-bing. Motor doesn't run on or lean bog during the main, in fact it runs great. But obviously something is out of tune. Any help is appreciated.
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