22LikesHoustons Engine Service H.E.S.
10 min pits with ease 
always
05-09-2012 | 08:32 PM
#6618
Monty- while I was resetting the air gap I decided to go ahead and reset the needles to the factory settings as well. What I found when doing that was that I was over a quarter turn richer on the HSN and a 1/8 turn richer on the LSN than what the factory spec's are, does that sound right?
Keep in mind that the engine ran well, minus the ghost flame-outs that prodded me to find that crack in the tank. I replaced that and re-tuned for my last qualifier and the main in which I had no more issues. A temp check at the end of the last qualifier showed a temp in the mid 240's, but since the nova still is pretty tight that didn't seem out of place. But now that I see where my needles were, I'm a little concerned as I thought the factory spec's were almost always on the rich side?
Keep in mind that the engine ran well, minus the ghost flame-outs that prodded me to find that crack in the tank. I replaced that and re-tuned for my last qualifier and the main in which I had no more issues. A temp check at the end of the last qualifier showed a temp in the mid 240's, but since the nova still is pretty tight that didn't seem out of place. But now that I see where my needles were, I'm a little concerned as I thought the factory spec's were almost always on the rich side?
no answer
05-09-2012 | 08:43 PM
#6620
best thing to do on nova is warm it up , clear it out a few times , listen to the idle , if it revs high then comes down without being "tingy" its still rich (richen hsn before doing this) , lean lsn until comes down and stays consistent , then adjust idle gap until you get the desired idle , it usually ends up very close to .6mm but there are alot of determining factors
05-10-2012 | 12:47 PM
#6624
best thing to do on nova is warm it up , clear it out a few times , listen to the idle , if it revs high then comes down without being "tingy" its still rich (richen hsn before doing this) , lean lsn until comes down and stays consistent , then adjust idle gap until you get the desired idle , it usually ends up very close to .6mm but there are alot of determining factors
when tuning my LSN, the idle would raise or fall almost instantly with the LSN.
05-14-2012 | 10:04 AM
#6626
Tech Master
iTrader: (18)
Joined: Apr 2006
Posts: 1,116
I think I must have the wrong number for you Monty, every time I tried to call I got a "your call cannot be completed as dialed" message.
Anyway, I had a friend do some tuning on my motor this past weekend and he ended up back where I was on the needles, so I'm guessing that's just where this motor wants to be for my elevation and climate. Roughly 5 1/4 out on the LSN and almost about 3 3/4 out on the HSN. Air gap is probably down to .4 I would guess, as I started at .6, but ended up closing it up quite a little bit.
This friend is telling me I need to run a P3 in the Nova as it will be more consistent than the Nova #6 longbody in it currently, but he also doesn't agree with me that by changing to the OS plug I will reshape the button and not be able to use the nova plugs again without changing out the button. He swears he changes back and forth in his own Nova's. Am I incorrect on this?
Anyway, I had a friend do some tuning on my motor this past weekend and he ended up back where I was on the needles, so I'm guessing that's just where this motor wants to be for my elevation and climate. Roughly 5 1/4 out on the LSN and almost about 3 3/4 out on the HSN. Air gap is probably down to .4 I would guess, as I started at .6, but ended up closing it up quite a little bit.
This friend is telling me I need to run a P3 in the Nova as it will be more consistent than the Nova #6 longbody in it currently, but he also doesn't agree with me that by changing to the OS plug I will reshape the button and not be able to use the nova plugs again without changing out the button. He swears he changes back and forth in his own Nova's. Am I incorrect on this?
05-14-2012 | 11:06 AM
#6627
I think I must have the wrong number for you Monty, every time I tried to call I got a "your call cannot be completed as dialed" message.
Anyway, I had a friend do some tuning on my motor this past weekend and he ended up back where I was on the needles, so I'm guessing that's just where this motor wants to be for my elevation and climate. Roughly 5 1/4 out on the LSN and almost about 3 3/4 out on the HSN. Air gap is probably down to .4 I would guess, as I started at .6, but ended up closing it up quite a little bit.
This friend is telling me I need to run a P3 in the Nova as it will be more consistent than the Nova #6 longbody in it currently, but he also doesn't agree with me that by changing to the OS plug I will reshape the button and not be able to use the nova plugs again without changing out the button. He swears he changes back and forth in his own Nova's. Am I incorrect on this?
Anyway, I had a friend do some tuning on my motor this past weekend and he ended up back where I was on the needles, so I'm guessing that's just where this motor wants to be for my elevation and climate. Roughly 5 1/4 out on the LSN and almost about 3 3/4 out on the HSN. Air gap is probably down to .4 I would guess, as I started at .6, but ended up closing it up quite a little bit.
This friend is telling me I need to run a P3 in the Nova as it will be more consistent than the Nova #6 longbody in it currently, but he also doesn't agree with me that by changing to the OS plug I will reshape the button and not be able to use the nova plugs again without changing out the button. He swears he changes back and forth in his own Nova's. Am I incorrect on this?
Personally I've never had any luck with using O.S. plugs with Novarossi engines.
Ive had better luck and more of a consistant tune running
Werks #5 and #6 plugs and O'Donnell 77T, 87T, and 97T plugs
05-14-2012 | 01:57 PM
#6629
Tech Regular
iTrader: (12)
Joined: Apr 2009
Posts: 424
From: Phoenix
best thing to do on nova is warm it up , clear it out a few times , listen to the idle , if it revs high then comes down without being "tingy" its still rich (richen hsn before doing this) , lean lsn until comes down and stays consistent , then adjust idle gap until you get the desired idle , it usually ends up very close to .6mm but there are alot of determining factors
Thanks
1airborne
05-14-2012 | 03:09 PM
#6630
where the ( of the slide barrel and the ) of the carb body meet to leave a gap
==()==
distance in there should be around .6mm