I have a restrictor set for sale if anyone wants it. I just never use it.

I finally figured out my tuning issue. Two practices ago I had the hardest time getting a tune that would "stick". Would work great for a few laps then start to lean bog. Mess around with the needles, then it would get worse. It was fairly dark out so I didn't even notice all of the fuel all over the inside of the buggy. I got home and took the carb off and inspected the boot for cracks. I suspected that was the issue since I had just recently taken it apart and cleaned it prior to that run. Fast forward 2 weeks later at the next practice when I noticed excessive amounts of fuel spilling out from under the cooling head. I went to tighten all of the screws down when I realized one was missing. What I believe was happening was that the other 3 screws were strong enough to hold the head down until the temps or revs got high. At that point I started having the lean bog since so much of the fuel was escaping.

I ordered two sets of bolts from Rex and got to run today for the first time in several weeks. The engine tuned exactly as the long needle should, and I had no bogging or temp issues. In fact, I had several people comment how quickly the engine snapped back to idle after WOT. To top it all off, I noticed a significant decrease in temps between tanks today (206 --> 180 even including a 1 hour lean), so I should be able to start race tuning next time out.

Thanks Giz:nod:

I have new std. o-rings for the high and lsn.

Rex

If you change to a smaller restrictor you will need to lean out a bit. You didn't state what motor your running but most all Go motors will get better mileage and more power over 250 deg. The low speed needle has alot to do with runtime.

Rex

Hey guys it`s been a looooooooooong time since I`ve posted in this thread ..I use to run a standard plug go 5 port....Probably a gen 1..I know now that there they are several gens past that..I have heard of this long needle short needle discussions..Anyways I am in the market for another engine...I would like the 3 port or 5 port turbo plug but I want it with the short lsn..WHo can point me in the right direction on where I can get one and what pipe is the best pipe..I know I can order from amain or carolinasrc but I don`t know what version I am getting when I order there..Like I said I`m in the market and looking

Thanks Mike

A Gen 1, whoa that was a long time ago. We are up to Gen 5.5 now, with a Gen 6 to be released sometime this year I believe.
If you get the latest 5.5 motor it has a slightly shorter LSN than the previous models. The short needle works well. If you want to just get a long needle (1.6") and trim it down to 1.42" and round off the end. I am running these in both my motors and can get up to 12 min run times without being seriously leaned out.
Check out Massive Mods web site in Australia. With the exchange rate you are getting a very good price at the moment, and Mark will have an engine to you in no time.

Like 22Racer said, lean it just a bit for the smaller restrictor (less air flow requires less fuel). You may want to look at reducing the head shimming slightly too. Don't know what motor or nitro % you are running, but if your running 25 % or lower, dropping the head clearance by say .2 mm and then going to a slightly cooler plug will get you a bit more run time too.

Thanks Rex,how much?
Do you have a web site?

You can just Pm me or e-mail me at [email protected], sorry I've been slow at getting a website.
$2.00 each for the or-0023 o-rings, I only have 2 left.

Rex

eb mod go engine
 

i have an eb mod go engine with the full mod;broke in by ed and dynoed and tuned by him..
its perfect! ran it for 3 heats and decided to go brushless. just dont have the time for nitro. it idled like a car engine;too much power for my truggy. nice engine.

gonna sell all my nitro stuff in the for sale forum this week.

A little more info would help on the motor choice, car/truggy, driver ability, track and track surface etc.

I recommend the 3 port race for the beginner to intermediate racers, it is just very smooth but still fast enough to win at the expert/pro level.

Most advanced racers want a little more bottom end than the 3 port has, at least around here. I think the best buggy motor is a retimed 5 port. I charge $15.00 to retime a motor, it makes the 5 port smoother on the bottom and gives it more top end. Fuel mileage seems to have improved also. Best thing is it can be put back to stock easily if you need more bottom end.

Rex

Will this carb work on my GO 3 Sport.
Will help by any many means if it fits.Just wondering.
Thanks
http://www.massivemods.com.au/produc...roducts_id=107

Your giving that up for a tin can with wires that has no sound :confused:
Time constraints or not, thats sad bro :( I'm sure someone will snap it up.

how much?