Originally Posted by
Gizmatron
With 3 liters through the MG66 I started to lean it a little this morning at the track..have been getting 9m30 runtimes with a 7mm insert and very rich mix..leaned the hsn in a 1/4 turn and it started to really scream..another 1/4 turn in and it went mad...runtimes jumped to a steady 11m45-11m50..top end is totally insane..I am going to try the 6.5 insert..can anyone confirm that GO are supplying a 6mm insert with the GX series??? I got 6.5 as the smallest in the MG's box..If not I'll be hunting a 6mm down online..
This is the maddest thing I have ever driven..It screams like a banshee after just 3 liters..pinch feels little reduced from brand new..I think the fact GO relaxed the initial pinch on their motors is a fabulous idea..easier on the starter box and less stress on internals period!
Oh how will I wait 2 gallons for the ceramics etc..more to the point how will I keep it on the ground!
I made the suggestion to go down to 5 , 5.5 and 6 mm venturis about 6 months ago .. I think Simon Yii is designing a new set for the GX range which will be awesome ! ive seen some of his designs so far and they look goood ! Nothing released yet as far as i know .
With the MG66 we will be releasing our own set of venturis for the engine , we have designed a set of 6 for the MG66 . Normally reducing the carb throat gets more thank time but we have peopel getting 11 mins with 8 mm out of the box so i think 6.5 is small enough for this engine.