HB D8 + GX7R and Novarossi 9901, very nice combo :

+ YouTube Video

Track was very very dusty and grip was very low but practice time its practice time :)

cya !

Will see if I can track some video footage down over the next week.

motomatt check your pm's

I'd love to have a go on that track, I love it, good mix of obstacles :nod:

That last lap was a 42 flat, well done !

Pg; 783
11738-11744
Pg;809
12124

Yes any vids from the NZ nats Grizz would be sweet.

a gx7r is good at fuel consumption ? it is a 10min engine?

I don't have a GX 7 but a gen 5 7 port, I have got 11min in buggy some days and not on others, the grip levels play a big part in how much fuel you use from day to day as well as other factors.
But it is possible.

Hey guys I'm having a half tank lean issue. I did richen the HSN and it isn't helping. I did add a fuel filter a couple of weeks ago. Do you think that could be causing the issue. Also I did try antoher tank and still the same thing.

welcome to my nightmare!!! been having that problem since i got the motor, have tried everyhing, replaced all lines, gas tank, sealed everything, tuned to specs and instructions, changed pipe, plug, carb, still getting it also, good luck! and also a fuel filter usally makes things worse, take it off and throw it in the garbage!

Yeah I'm going to run it without the filter and see what happens.

it wont change the half tank lean issue, what engine you have......wait, let me guess, is it the gen 5.5?

Hi,

I wonder if it is possible to rebiuld a R.21 5PT (silver head) engine with a piston and cylinder of the new GX-5R or GX-7R.

Thanks in advance !

yep!!!

With the really low temps lately you need to be running it alot richer on the hsn and even more lean on the bottom end. The last time i ran my engine it was 75 degrees and 2 nights ago it was 60 and i had to turn out the hsn about 1/4 turn and the lsn in about 2-3 hours to get it back into tune from where it was about a week ago. Last week it was running about 270 consistantly and this week it was up over 300 until i retuned it. Just wanted to let you know you might be chasing the weather and a tune at the same time. This time of year the temps fluctuate on a daily basis and it does complicate things alittle if you aren't 100% on tuning your engine.

try tuning the motor when it is at its hottest point(after about 2 full tanks) cause the chassis starts holding heat and makes the motor run hotter than you think!...what temps are you getting?...cause it may be getting a tad too hot!...try richening the bottom a couple hours and see if that works!...the LSN is NOT as touchy as the HSN!...so you can be 2-3 hours maybe 4 hours lean and not know it:nod:;) oh and try without the FUEL filter to see if that helps but the Fuel filter is not ALWAYS bad it just has to be AIRTIGHT!