Go-Tech Engines Thread
#4580
Hope someone can point me in the right direction or help me out. I have a go .21 5p turbo and am not sure if the LSN is long or short version. It looks long to me, but I haven't seen the 2 side by side to know for sure. I've tried searching for pics or links to pics but haven't found any yet. Can someone help me with this? Thank you.
#4581
Tech Apprentice
Joined: May 2005
Posts: 62
#4583
Hope someone can point me in the right direction or help me out. I have a go .21 5p turbo and am not sure if the LSN is long or short version. It looks long to me, but I haven't seen the 2 side by side to know for sure. I've tried searching for pics or links to pics but haven't found any yet. Can someone help me with this? Thank you.
Rex
#4584
Tech Apprentice
iTrader: (1)
Joined: Jun 2008
Posts: 93
From: Australia
This was posted a while back.
Well I ordered the older needle that supposed to take care of the lsn problems..but now I can't tell if the tear in my carb boot had alot to do with it. The car sounded like it had a air leak. I took a pic of the long needle that came with my 08' 3 port race next to the old shorter blunt needle that I'm going to try. What a difference.


#4586
Out of interest I tried this same needle in my modified 5 Port, but it does not run as good. Has a little hesitation in the rev range just as the needle comes out of the spray bar that can't be tuned out. I am assuming the engine was modded around the long taper of the newer LSN needle and the sudden removal of the shorter needle from the spray bar makes it run a tad rich for an instant. Any thoughts on this. It's not a problem because I use the original long LSN in this motor and it kicks arse, but was just interested to hear your thoughts.
#4587
Yeah 1.42" sorry! If you change the needle to the shorter lsn the bottom should be close as long as your the same turns in. But you will be richer with the hsn because more fuel can come out of the spraybar. I don't think a motor can be modified to the carb.
Rex
Rex
#4588
Cheers Rex, probably just my inexperiance at fine tuning
I guess the modded motor needs just a little more finesse in that area. Like I mentioned, the short needle in my stock 7 Port is wicked. The motor has never run better
I guess the modded motor needs just a little more finesse in that area. Like I mentioned, the short needle in my stock 7 Port is wicked. The motor has never run better



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