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-   -   Go-Tech Engines Thread (https://www.rctech.net/forum/offroad-nitro-engine-forum/177028-go-tech-engines-thread.html)

magbarn 11-14-2007 11:24 AM


Originally Posted by Andrew_Carter (Post 3852847)
2 Gallons down the line and i need a new piston liner :rolleyes::weird:

RB coming my way!

Sorry to hear that about your GO engine. We're lucky to have Russ here in the US. I wouldn't be ready just to jump into RB either. My C6's rear main bearing went out at around 2 gallons also(and u thought only OS has bearing problems) Turns out Nova style motors with the big rear bearings like Plus21-5K/C6 etc... have been having a few issues. Of course, RB's reply was "Conrod & REAR bearings should be replaced after break-in" In other words "user error" on my $400 motor. :flaming: If I were still going with RB I would get their more reliable square stroke motors like the WS7III not their long stroke motors like the C6.

rabidsquirrel 11-14-2007 11:42 AM

If the expectation of the manufacturer is that you'll need need to replace major components of their product within 40 minutes of run-time, THEN BY GAWD INCLUDE THE REPLACEMENT PARTS WITH THE NEW PRODUCT!!! :flaming:

I do feel that this sort of expectation is highly unrealistic in regards to the average consumer...

;)

Rocket42 11-14-2007 05:47 PM

You would be amazed Rabid, Rody at RB reccomends changing the connecting rod every 1 1/4 gallons, at $50 a piece they are a little cheaper then the nova rossi's, But don't count out Go either We reccomend changing the connecting rod after break in or at 3-4 gallons. I also reccomend changing the wrist pin with the rod since its cheap.

G26r I think that the piston and sleeve should fit but i haven't tried it, I do know the sport engine case is not exactly the same, because I tried putting a 5port crank and rear cover on a 3port sport and the rear cover didn't fit.

Swede#1 11-14-2007 06:13 PM


Originally Posted by Rocket42 (Post 3865510)
Swede its hard to say what stock needle settings are on that carb because there was a revision to the LSN. Its best set the idle gap then put the engine on the box and lean the HSN so it clears out on top, and then back it off 1-2 hours. then set the LSN on the box and clear out the engine by revving it. then listen for the engine to come down to idle fairly quickly and cout to 6 and then grab full throttle. you should richen the LSN until it has a slight bog before clearing out after the 6 second count. You will know its rich because you should see some fuel being spit out of the exhaust. After you do that set your idle and you should be close when you get on the track.

So does the new GO engines come with a different carb ?

g26er 11-14-2007 06:24 PM

Thanks!!

Jason Halvorson 11-14-2007 07:37 PM


Originally Posted by salteen (Post 3865753)
Thank you. It makes the buggy wicked fast. It's been too wet to hit the track and I've only been able to drive it in my leaf infested back yard. It is going to be nasty on the track, no doubt in my mind. I'm heading out there today after work as long as the rain holds off. I'll be posting a report for sure! lol

as I'm still a newb more or less...that's the first I've heard of using o-rings. how do you position them in/on the filter's tube?

find a few orings about a mm smaller than the tube, roll the oring onto the tube past the spot where you have the zip tie and place the tube on the carb, then roll the oring back onto the same place you have the zit tie, this will make a nice air tight seal...do the same for the filter side...

Maximo 11-14-2007 08:14 PM

well for anyone interested.. I had my modified Go .25 dynoed by Adam at AB Mods...... the graph is overlayed onto a stock Ninja 28 graph .....

http://i107.photobucket.com/albums/m...nja28graph.jpg

salteen 11-15-2007 05:28 AM


Originally Posted by Jason Halvorson (Post 3867643)
find a few orings about a mm smaller than the tube, roll the oring onto the tube past the spot where you have the zip tie and place the tube on the carb, then roll the oring back onto the same place you have the zit tie, this will make a nice air tight seal...do the same for the filter side...

thanks, I'll have to do that. I was thinking more along the lines of the traditional way to use an o-ring...no wonder I was so lost lol.

magbarn 11-15-2007 01:36 PM


Originally Posted by Rocket42 (Post 3867244)
You would be amazed Rabid, Rody at RB reccomends changing the connecting rod every 1 1/4 gallons, at $50 a piece they are a little cheaper then the nova rossi's, But don't count out Go either We reccomend changing the connecting rod after break in or at 3-4 gallons. I also reccomend changing the wrist pin with the rod since its cheap.

Listen to Russ' advice on the conrod change. I lost a 5 port after conrod blew at around 5.5 gallons. It also didn't help that I broke in my first GO engine on the starter box without using a heatgun, therefore placing high stress on the conrod on the 1st gallon due to the crazy pinch. The good news is that I can do 2 conrod changes for about the price of one RB conrod.

Rocket42 11-15-2007 05:13 PM

Swede the new Go engines all feature that carb, but a few batches back the LSN was redesigned on that carb. so It would be hard for me to tell what LSN is in that carb because the carb body is the same. If you try setting the carb on the box I think you will find its not very difficult to get a tune on the engine which would be much closer then stock needle settings.

kenshinmd 11-15-2007 08:31 PM

venturi
 
has anyone used a go .28 engine? It comes with a stock 8mm venturi, is it ok to replace it with a smaller venturi, i've got some spares from my nova engine. tnx

Jason Halvorson 11-15-2007 08:51 PM


Originally Posted by kenshinmd (Post 3871646)
has anyone used a go .28 engine? It comes with a stock 8mm venturi, is it ok to replace it with a smaller venturi, i've got some spares from my nova engine. tnx

i run the .28 in my MBX5T, and so far im very happy with it...yes you may replase the 8mm venturi...i use a 7mm in mine from a nova, but i have the Go venturi kit on the way...the 7mm helped to tame the bottom end and did not hurt the top end any, it should also help with better fuel run times...

kenshinmd 11-15-2007 09:47 PM


Originally Posted by Jason Halvorson (Post 3871719)
i run the .28 in my MBX5T, and so far im very happy with it...yes you may replase the 8mm venturi...i use a 7mm in mine from a nova, but i have the Go venturi kit on the way...the 7mm helped to tame the bottom end and did not hurt the top end any, it should also help with better fuel run times...

tnx for the quick reply, another quick question is the 21-7 turbo easy to tune compared with the standard plug version?

Jason Halvorson 11-15-2007 09:57 PM


Originally Posted by kenshinmd (Post 3871912)
tnx for the quick reply, another quick question is the 21-7 turbo easy to tune compared with the standard plug version?

i have the 21-7 and i broke in the engine using the standard button, and after break in i put in the turbo button, and i guess as far as tuning i never noticed any difference when it comes to ease of tuning...however i did notice a increase in power all across the power band, but i havent had a full race tune on the 21-7 yet, ive only got 3/4 gallon on the engine...

satoch 11-15-2007 10:39 PM


Originally Posted by magbarn (Post 3870229)
Listen to Russ' advice on the conrod change. I lost a 5 port after conrod blew at around 5.5 gallons. It also didn't help that I broke in my first GO engine on the starter box without using a heatgun, therefore placing high stress on the conrod on the 1st gallon due to the crazy pinch. The good news is that I can do 2 conrod changes for about the price of one RB conrod.

What a coincidence. I had a used con rod let loose tonight at practice. In all fairness it had 5.5 gallons on it and I then used it to break in a new piston/sleeve. I knew I should've put the new one in but I went one tank too many. Oh well.

Good news is no damage to the newly broken in P/S, crank or case! :) No harm no foul IMO.


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