I totally agree. Once Go Tech works out the carb issues, then you can definately compare this engine to the high dollar mills.

Now you guys are making me nervous. My 3 port race should be here Wed.

Dasupacat1, I sent you a PM.

Ok so yes historically Go Techs have had some issues with the carbs. In fact, Brian said that my 3 port R that he is working on had some issues. While it is mildly frustrating, I will say that I recognize the bigger picture, ie that this company is attempting to do all they can to produce highly competitive engines at a price waaaaaaaaaaay below their Italian counterparts. The person that is dominating the club that I run at (and I mean dominating) is running a 7 port in his truggy and is killing all the other extremely experienced and talented drivers. It is obviously not all the engine, but shows these are capable mills. Considering the price of these engines... this fact alone is amazing. If people cannot handle occasional potential issues associated with the growing pains of getting a low cost product like this to market, then pony up and thrown down $400-$500 for a tried and true engine. Personally, I applaud Go Tech for trying to break the age old (I raced electric 15yrs ago and same phenomenon) R/C myth that more expensive = better and am willing to support them while they do. Another thing is that, although there have been issues, I hope you all recognize how quickly they have jumped on this problem and have been working to resolve it. This company cares about racers and reacts to our demands/needs rather than simply forcing a canned product down our throats.

Lastly, I have been working with Go Tech's US distributor recently on account of some personal stupidity on my part with my .25 port. I have NEVER experienced customer service like I have from Dana and the whole Race Factor crew. I would buy and recommend Go Tech products for that reason alone. Hope this rant helps those currently contemplating running Go Techs .

I had issues with my carb this weekend as well, put an OS carb on and problems gone... too bad I can't keep it

The lean bog issues on the Go's are caused by the low speed needle being to long. (v-specs run a long low speed needle) You don't need to change the whole carb, just put a nova/ rb low speed needle in or get a new one when Racefactor gets them in. I shortened one today and need to try it out.

Rex

Thats weird ... We have had zero probs with the carbs ... the new GEN 5 engines are going great . I have run in about 6 engines this week so far and ive been getting temps of about 150 to 170 deg c on the first litre on grass.. thats a little hot but the temps settle once the engine is at about the 3 litre mark.. You need to keep in mind until the engine is broken in properly you will have to tune differently to how you are used to tuning once the engine is run in... Please realise that you will not get normal operation on any engine no matter what brand till you are run in ..



What sort of problems are you guys encountering ? Are you sagging for power at half tank ? is idle erratic ? please give me more info on PM thanks

MM

in my case, on my 7 port, i can get steady temps around 240-270 but the bottom end does have a bit of a bog to it, plenty of smoke, running a p3. Engine has 2 gallons on it. It may be the lsn is to long.

I also have a 3 port r that seemed to have a similar issue but it only has 3/4 a gallon on it.

also what nova or rb lsn are you replacing them with, i mean from which engine?

Guys, I'm running a '08 PTM 3R and honestly haven't had any problems with my carb. I'm right at the 3 gallon mark and she is a screamer. I raced in Florence,Al yesterday at a track I had never been to before....9 people came to me and applauded how my engine ran. I believe the needle problem gives these engines very unique tuning characteristics that generally confuse most people. I have read countless posts and had countless conversations with people about these engines.....I listen to what everyone says....even if it sounds stupid( like sometimes you can lean the LSN and the temp will drop). I have learned alot from Brian Carey at Pro Twister Mods in the short time that I've known him about these engines....I probably would have killed my first Go if it weren't for him.

Hey Mark - It must be our fresh down-under air We have heaps of Go's running here and I haven't heard of any problems. Most of us are running the model before the new Gen 5, but these still have the longer LSN fitted and are running great. 3's, 5's and 7's all going hard out.
Seen a few motors running your new oil recently in some tests using some local Go-Tech's and one VSpec engine - the boys seemed mighty impressed

I second that...brain is awsome...he knows hes stuff..for sure.
I also have a 08 3r not the modd'd one...have zero tunning problems..
My truggy runs better than when i had a jammin .21 jpx...
hands down...

My engine has about a gallon on it now. I have never had this problem with any other engine. It was impossible to tune as it would run fine for a few min then the lean bog would happen. If I had a different LSN I would have changed it but I didnt all I had access to was an OS carb which solved my tuning problems.

I was not the only one who had this problem this weekend. There were 2 other 3 port R's that had the same issue. I am getting a new LSN this week and will try the GO carb again.

Ok i have to say that i had the same issue until this last weekend of racing. my brother and i both have the go tech 3 port sport motors and had lean bogging issues after a half of a tank. it was frustrating i changed to an os carb and my brother kept the origanal carb on his after trying to tune the motors a local guy we raced with who has the same 3 port sport motor showed us that once you set the low end to a 3 to 6 second pinch test all you have to do from there is tune the hsn. I have to say once we both did this we had all the power we needed and the low end bog was gone and kept a consistent tune throughout the entire race from then on. so from my experience set the low end and then tune with the hsn.

worked for me and my bro hope this helps any one else having the issue as well

hey D

there are a couple of ways to tell a gen 5 engine

#1. the carb has a black body

#2. the crankcases are black 3,5&7 port with R21 and the new go logo on the sides instead of B21 and the word Go

#3. the cooling heads are now ingraved with the new logo and the type of engine. IE 5PT for the 5 port

#4. all the gen5 engines are turbo

#5. the gen 5 engines currently come with the long LSN but I beleive that future shipments to the states will have the short LSN if you look back a couple of pages I think it was Brian from PTM that posted it.

Hope this helps
Adrian

well grizz so far the only engine weve had issues with are the 3port R's but with a couple of pipe changes and a tuning rethink we seem to have that sorted I'm also going to give the short LSN a try in the 3R this sunday to see if it makes any difference.

And as for Fuel mixed with MM oil all i can say is holy crap it changes the performance alot!!!

more consistant idle, runs cooler, spools up faster and the run time increased aswell

Adrian