14LikesThe Nitroshop
11-23-2015, 03:15 AM
#49
Tech Adept
Yeah Neal I have one stock and two of your modified .25 Legend and the difference on the track is huge, I feel they have a little bit more low end but the top end is ridiculous compared with stock, its like they rev higher with more power on mid-top . If possible I would like to see a dyno of you Legend .25 and other engines too.
Last edited by danyvw; 11-23-2015 at 03:49 AM.
11-23-2015, 05:14 AM
#50
Tech Regular
Hey Neal what your nov 28-7 bump looks like on your dyno??
11-23-2015, 05:14 AM
#51
Tech Regular
Stock and mod
11-23-2015, 06:06 AM
#52
Yeah Neal I have one stock and two of your modified .25 Legend and the difference on the track is huge, I feel they have a little bit more low end but the top end is ridiculous compared with stock, its like they rev higher with more power on mid-top . If possible I would like to see a dyno of you Legend .25 and other engines too.
11-23-2015, 06:22 AM
#53
Tech Adept
Awesome to hear ! I have had awesome results with my modified Legend 25's....SO going forward you would be able to reduce your head shimming by 0.1 mm , Likely even by as much as 0.2 mm... As that engine wears in and relaxes some it will want to have the head clearance reduced.. The results will be more power, especially low end power, cooler running temps and a stronger idle. Just make sure to run a medium plug and not run too lean and the higher compression setting will be well worth it...I tend to leave my modified engines quite conservative in terms of head clearance and compression for safety reasons when they are new but once they have fully broken in they actually will run better with the compression raised some.....Every engine is different but I have found my modifieds can really come to life just by running a little tighter squish.....
11-23-2015, 07:06 PM
#55
Sorry Buddy but I don't have a good sample of a 28-7... I only tested one right when I rebuilt the dyno and I wasn't happy with the procedure... Since then I have made several changes and perfected my testing procedures... SO Basically I will need to retest a 28-7 sometime in the near future....
11-23-2015, 07:41 PM
#56
Awesome to hear ! I have had awesome results with my modified Legend 25's....SO going forward you would be able to reduce your head shimming by 0.1 mm , Likely even by as much as 0.2 mm... As that engine wears in and relaxes some it will want to have the head clearance reduced.. The results will be more power, especially low end power, cooler running temps and a stronger idle. Just make sure to run a medium plug and not run too lean and the higher compression setting will be well worth it...I tend to leave my modified engines quite conservative in terms of head clearance and compression for safety reasons when they are new but once they have fully broken in they actually will run better with the compression raised some.....Every engine is different but I have found my modifieds can really come to life just by running a little tighter squish.....
11-23-2015, 08:58 PM
#57
Just start with a 0.1 mm reduction and then monitor the glowplug coil.... What you want to look out for is any distortion of the the coil shape...Usually you can run the heads pretty tight if you make sure not to over lean the needles.. The engines will run cooler and make more power but they are much less forgiving if the tune does go lean..This is why its important to watch the glowplug coil as its your canary in the mine...If that coil starts to show distortion its time to fatten the needles, get a cooler plug or add the shim back.... Usually when it comes to shims it can pay off to do some careful testing , the engine will tell you where its happy just by how it performs....When you hit the sweet spot the engines can really come to life.
11-24-2015, 02:38 AM
#58
Tech Adept
When you see those dynos you underestand why when you run a TNS engine you have a great smile on your face all the time. That modded Elite5 is able to produce 45% more power than a stock and way more power than a stock Mito7. Thats the reason you can fly all the triplets w/o hesitation and in the straight everybody is following you and at the end everybody is asking: What the heck do you have inside of that engine? The answer is simple: a TNS.
11-24-2015, 05:19 PM
#59
When you see those dynos you underestand why when you run a TNS engine you have a great smile on your face all the time. That modded Elite5 is able to produce 45% more power than a stock and way more power than a stock Mito7. Thats the reason you can fly all the triplets w/o hesitation and in the straight everybody is following you and at the end everybody is asking: What the heck do you have inside of that engine? The answer is simple: a TNS.
