Just transfer all shims , there should be three , two aluminun and 1 coppee

+15
Ran my Plus4 Team tonight with 5,5 mm venturi (ran just perfect of course :-)). When the ambient temperature dropped the engine started to scream on the straight and have a little lean idle. I turned the HSN approximate 1/726 turn out and both top and bottom were dialed once again. This was in 10º Celsius... It will be interresting to see the sensitivity of the needles in summer time...

you'll notice with the 5.5mm venturi that your tuning window will be a lot narrower overall

I've used 6 mm venturi the past 1½ year and really likes the instant reaction from the engine. No gray zone where the engine runs ok. Now its perfect, too lean or too rich .

The 5,5 mm venturi really tamed the engine. There is not a big bottom power increase but still an ok top. I thought the small venturi would give the same bottom increase like a bottom end pipe and/or long manifold does but its not even close. To gain more runtime with the small venturi I must be carefull not to be too hard on the throttle now the engine hasn't the same amount of power as it has with e.g. 7 mm venturi. I can really understand why Neal writes that the correct venturi often makes better runtimes because a specific engine will have maximum overall power with e.g 7,5 mm venturi. Then you can use ½ throttle instead of 3/4 or full throttle to get from point A to B in the same time.

Hello All,

Im getting this engine 4BTTS pre run.
Do i need to run fat for couple tanks or this is race tune ready?

Thanks

Just need to drive around several tanks. It will go rich suddenly and that's when it is fully ready. It will be reliable and steady after that point.

Has anyone tried the optional carb? (#24065)

whats the deal with that carb/ and does it come standard on any of the newer engines?

Soooo close to hitting that order button... cant wait for my clocked p5

At this point no

It is available buttttt price is wellllll a bit much for a carb

Novarossi has always been at the head of the game in the carb world

is it really that much better

I just purchased me a P5 from Monty. I better get a HES sticker I can't wait to try out this mill.

dont forget a houston avatar to go with it

is it available? and does it work with modded engines? and whats the cost? 100 or so?

lol good one. I will think about it...