Hey guys, I got a WS7II and run a 2045 pipe and 198 header on it and love the combo, going to get Houston Engine Services to build me a Novarossi 21-5K and he suggest a Ofna 063 pipe, my question to you is how does a 2045 compare to a 063? I thought the 2045 was the best pipe for a 5-7 port RB engine, and RB's are made by Novarossi, so would my 2045 not be a great pipe for the 21-5K ?

thanks guys

engine seems to run good, sounds healthy.

btw raytek gun is 1 degree off from the exergen. or is it the other way around?

I use to use the laser raytek and with the raytek it varied from 25+. I think it reads lower than the exergen.

Ran the B9 today... WOW 2 1st places and 1 3rd. Broke shock eyelet, in the last 2 mins of the race.

This beast was lapping everyone, I am extremely pleased so far.

One quick question tho, after running for about 10 minutes, I would go in for a refuel and the engine would splutter and die, I know this is my bottom end needs to be tuned, do I richen or lean?

Thanks

I ran my new B9 yesterday also, what a Hoss!! The power curve comes on smooth, not light switchy, but pure brute power.

Took 1st, 2nd, 1st in the heats, broken a clutch bell in the mains. Love this mill.

yeah yeah the AMBUSH CREW is finally glad your not a grouchy mOfO anyMo

Does anyone have any info the Rally 9 engine?
I am considering this one for my buggy.

Oh well...was gonna get two Nova engines but the guy backed out of the sale.

Went ahead and got the Rally 9 for my D8T and Killer 9 for the D8.
Fingers crossed....hopefully these two engines do good for me.

You won't be, I have used RB engines for 8 years, still using my WS7 thats 6 years old with original piston and sleeve, changed out the bearing and conrod, about 8 gallons of fuel thru it, it pulls away from my sons C6BBT thats modded. just take care of it, make sure you keep the air filter tight, so it does'nt suck any dirt .

Here they are!!! I like them both, only wished the Rally 9 had the idle set screw on top...but its no biggie.

RB Concepts Rally 9




RB Concepts Killer 9

Looks good...

Did you figure out why the Rally 9 is cheaper than the Hobby 9? Only thing that I see if that the Rally 9 doesn't have the L2G head.

dont know why its cheaper but its a different engine for sure
bore and stroke are different as well as the Rally 9 being a
turbo plug engine

Well break them in and lets go to Indy soon.

Neat... Break them both in and let us know which you like better.

I am trying to round up some racers to go to Granbury this weekend.
They have just enlarged their track in it looks pretty fun.
I dont think it will happen but I am still trying hehehe.


Will do...they both will have a nice home but as long as they both run good I will be happy!!!