Originally Posted by ralphierace13 (Post 14976674)

YES! Here the engines are tech inspected. Especially in 1/10 IC .12 engines... Also in 1/8 GT the engines are randomly inspected to ensure 5 ports and 7mm restrictors. By the way in Novarossi engines even if you remove the restrictor completely the smallest section of carb throat is 9mm anyway... So even if you drilled out a restrictor to 9.5mm you are still only at 9mm because the carb throat is 9mm.

Originally Posted by dan_vector (Post 14976678)

Over here they never check, and yes the bottom is still 9.0 but it becomes a ram air situation I mean using no restrictor is even better don't matter its 9.0 still creates more volume and forces it in!!!

Originally Posted by ralphierace13 (Post 14976685)

Can't imagine it makes any difference whatsoever. That said I hope none of your technical inspectors are reading this forum LOL. :lol:

Originally Posted by dan_vector (Post 14976708)

We don't have any inspectors thats what I'm saying, u should try the stack card insert its legal and its insane causes a vortex I love it. It's funny does anyone realize all these mods they do to there engines but if u only take in the same amount of air and fuel then its pointless, I also open the nipples on the tank and carbon do not worry about run time the top guys here run flat out and we are so much faster we make a pit stop..

Originally Posted by ralphierace13 (Post 14976729)

whats a stack card insert ? never heared of this

Originally Posted by dan_vector (Post 14976662)

You shouldnt have an issue making 5 minutes with a novarossi engine. The 2660 pipe is very efficient and actually many use the pipe on OS engines to make time. We need to look elsewhere to get time....

Firstly how short of fuel time are you? Is your tank full size (many are undersize out of the kit - Serpent is a particular tank thats about 5cc too small out the box). Clutch setup properly - not slipping? Is the engine lean enough - if the engine has just come off break-in then the engine will get better as it fully breaks in and you can go leaner.

Honestly you should make 5 minutes easy on that pipe and engine. I can get around 5:30 from most Novarossi .12 engines on the 2660 pipe with both the 5 ring and 6 ring manifolds.

Originally Posted by mick8488 (Post 14977232)

Thanks, Dan. Yep solved today. Engine still needed a bit more running in, now making 5:20/30 no worries.

Originally Posted by rick oxley (Post 14976914)

Carb insert velocity stack carb insert it sticks out the carb about an inch and causes a vortex

Originally Posted by ralphierace13 (Post 14976963)

Carb insert velocity stack carb insert it sticks out the carb about an inch and causes a vortex

Originally Posted by BigC2007 (Post 14984924)

Hey Guys where do you guys buy your .21 engine tools from ? Like clutch and flywheel tools and pinion gear remover ?

Thanks

Originally Posted by dan_vector (Post 14984937)

Most car manufacturers have their own tools for this. I use Serpent in this case. Arrowmax and Hudy also have clutch flywheel and bell gear tools also.