expected more
04-18-2015, 01:38 PM
#21
Congrats on the numbers and it sounds about right. That turbo ran out of turbine wheel around 15psi, so 19psi wouldnt net much but more heat. On Nicks 5.3 76/67 setup, we made 667 at 15psi. We tried more boost, but didn't show gains. The same turbo on my 4.8 was over 3 to 1 exhaust back pressure to boost at 15psi, and that's less cubes so it would only be worse on the 5.3. Add in you dyno'ed unlocked, yeah your about dead on.
Again good job on the setup, if you want more power though, time to swap some parts out.
Again good job on the setup, if you want more power though, time to swap some parts out.
04-18-2015, 06:43 PM
#22
Formerly ScreamingL
Yea I said good ones are less than 10%. 8-10% is generally considered the max you want or what you can tolerate before the converter should be tuned up. But this brings me to my next point, what race teams shoot for and what works good enough for the typical DYI road warrior are different things. I have no doubt some boosted setups lock the converter, I just its a bad idea on a heavy truck in my opinion. That doesnt mean people dont do it.
04-19-2015, 01:11 AM
#24
Teching In
Thread Starter
Join Date: Feb 2015
Posts: 11
Likes: 0
Received 0 Likes
on
0 Posts
Thank you foose! I guess I shouldn't be complaining on what it made if you all think that's about right. Any recommendations from any one on my next step to get close to the 700 range from what my set up is now. Bigger turbo? Or should I be looking at a precision 76/75 like I was recommended from the shop?
04-19-2015, 11:49 AM
#25
That's a blower setup. For the 90% of turbo guys on here running KB racing or Trick kits, there will be a good amount of boost increase when it locks in 3rd due to load. For me with a JGS 60mm it about 5psi jump. A lot of guys don't want that and they also don't want to buy 1k+ boost controller to fit it when the turbo kit was only 3k.
04-19-2015, 11:53 AM
#26
Thank you foose! I guess I shouldn't be complaining on what it made if you all think that's about right. Any recommendations from any one on my next step to get close to the 700 range from what my set up is now. Bigger turbo? Or should I be looking at a precision 76/75 like I was recommended from the shop?
04-19-2015, 12:25 PM
#27
Formerly ScreamingL
That's a blower setup. For the 90% of turbo guys on here running KB racing or Trick kits, there will be a good amount of boost increase when it locks in 3rd due to load. For me with a JGS 60mm it about 5psi jump. A lot of guys don't want that and they also don't want to buy 1k+ boost controller to fit it when the turbo kit was only 3k.
I've built similar setups and boost stays steady with a good size gate placed at Turbo
Now if you have a converter that's isn't lock up you want to shoot for 3-6% slip otherwise you're wasting power Nd creating trans heat for no reason
And not all lightnings are blower, point was factory vehicles lock it...just cause a few think locking is bad doesn't mean it's something ppl shouldn't do
04-19-2015, 06:28 PM
#28
My setup gained 1 mph when locked and no ET. So for elapsed time, what matters for me, my truck doesn't get any help from being locked. So your opinion of "greatly" helping in my setup is wrong.
Goes back to testing out what works for you. Just because a George or Toms truck does one thing doesn't set the standard for your own.
Goes back to testing out what works for you. Just because a George or Toms truck does one thing doesn't set the standard for your own.
04-20-2015, 08:31 PM
#30
Thank you foose! I guess I shouldn't be complaining on what it made if you all think that's about right. Any recommendations from any one on my next step to get close to the 700 range from what my set up is now. Bigger turbo? Or should I be looking at a precision 76/75 like I was recommended from the shop?