aussies1129

iTrader: (74)

anyone tried a nov 21-4 buggy engine with a jp4 pipe?whats it like for power, fuel runtime??
cheers

Chris-s

Good power, only loses a couple of meters on the pit straight. Smooth power delivery. With a 6.5mm venturi I've done 8.5mins

8&stuff

iTrader: (55)

just curious what your temps were like w/full&almost empty tank with +4-jp4?

Chris-s

I run around 220-240F.

I try to make sure the engine is up to temp before it goes out on track.

pickle311

iTrader: (31)

Seriously? That thing must ba a gas hog to only get 8.5 minutes with a 6.5mm insert. I was considering buying a +4 but that scares me

8&stuff

iTrader: (55)

i noticed and thought the same thing. better matched pipe will surely push 10min

Chris-s

I swear the topic said 21-5 this morning !

A few people I race with use the 21-4 and can get 10mins, some can't get it consistently (you really need to be 10.30 or more to be safe) so have gone with the OS