I hope I'm not late for work!
May 17, 2016 | 09:05 AM
#1501
Got the truck back together this weekend and put a couple hours worth of driving on it. This thing gets awful gas mileage 
I havent actually measured it (purposefully), but you can tell it drinks gas. Everything went fine after I fixed a leaking valve cover and got all the air out of the intercooler. I also swapped in a 160 degree tstat from a stock one I was using earlier. I was able to use the same belt with the spacer, just raised the moveable idler up some to make some slack.
The tune overall wanted about 5-10% more fuel everywhere especially part throttle, which I found interesting. The AC condensor also really impacts radiator performance, more than I expected actually. Never had a heat problem, but with it just sitting temps would climb to the 190 range with the fans on low, and drop to the 170s 180s when driving.
I also discovered the burst disk on one of my bottles was leaking so I lost most of a bottle of nitrous without ever using any. Fixed now but thats irritating. I got my blanket kit in also.
I all I have left is wiring stuff for the nitrous. I am going to put the intercooler pump on a switch so I can turn it off if I want to instead of it running whenever key is turned to run. I am going to add switches for the purge, heater blanket, and master arm. They will all fit on the left by the vent.
I also plan to finish the new coolant tank soon to get that out of the way to over by the big hole in the fender in the secondary battery tray.
Changing jets on the spacer plate is going to be a pain in the *** because its so hard to reach and theres a lot going on there. Not a huge deal, just wanted to complain about it.
I havent actually measured it (purposefully), but you can tell it drinks gas. Everything went fine after I fixed a leaking valve cover and got all the air out of the intercooler. I also swapped in a 160 degree tstat from a stock one I was using earlier. I was able to use the same belt with the spacer, just raised the moveable idler up some to make some slack.The tune overall wanted about 5-10% more fuel everywhere especially part throttle, which I found interesting. The AC condensor also really impacts radiator performance, more than I expected actually. Never had a heat problem, but with it just sitting temps would climb to the 190 range with the fans on low, and drop to the 170s 180s when driving.
I also discovered the burst disk on one of my bottles was leaking so I lost most of a bottle of nitrous without ever using any. Fixed now but thats irritating. I got my blanket kit in also.
I all I have left is wiring stuff for the nitrous. I am going to put the intercooler pump on a switch so I can turn it off if I want to instead of it running whenever key is turned to run. I am going to add switches for the purge, heater blanket, and master arm. They will all fit on the left by the vent.
I also plan to finish the new coolant tank soon to get that out of the way to over by the big hole in the fender in the secondary battery tray.
Changing jets on the spacer plate is going to be a pain in the *** because its so hard to reach and theres a lot going on there. Not a huge deal, just wanted to complain about it.
thats annoying!! it should have been brand new! sorry...
May 17, 2016 | 09:39 AM
#1502
Thread Starter
Joined: Jan 2006
Posts: 16,282
Likes: 438
From: Huntsville, AL
The burst disc looks brand new, but it doesnt look like there was any thread sealant on it. Not a huge deal, I will just do that when the bottle is empty next time.
I also want to permanently mount the heater pressure switch to the bottle on the pre-valve port along side the gauge. Reason being I dont want to have to open the valve before the bottle is where I want it. Also eliminates the possibility of having the heater on and forgetting to open the valve causing a disk blowout.
I also want to permanently mount the heater pressure switch to the bottle on the pre-valve port along side the gauge. Reason being I dont want to have to open the valve before the bottle is where I want it. Also eliminates the possibility of having the heater on and forgetting to open the valve causing a disk blowout.
May 18, 2016 | 09:06 PM
#1503
Thread Starter
Joined: Jan 2006
Posts: 16,282
Likes: 438
From: Huntsville, AL
So good news, with the spacer plate installed I lost about 1.5-2psi of boost. This means the intake is less restrictive and that 1/2" of space is really significant in terms of VE. Lower boost means lower IATs and less drive power required, so good news for blower guys!
May 19, 2016 | 08:12 AM
#1505
Thread Starter
Joined: Jan 2006
Posts: 16,282
Likes: 438
From: Huntsville, AL
I mean, feels about the same I guess haha.
Intake temp is actually lower, and I dont have the meth hooked up to the inlet anymore either. Roughly 10-15 degrees cooler with no meth.
Intake temp is actually lower, and I dont have the meth hooked up to the inlet anymore either. Roughly 10-15 degrees cooler with no meth.
May 19, 2016 | 08:47 AM
#1508
Wouldn't increased heat from an inefficient cooling system lead to more boost? On the flip side, hot weather would decrease boost.
Boost with a blower isnt a linear equation... but there is an element of pressure multiplication. Higher DA will result in lower boost every time.
Boost with a blower isnt a linear equation... but there is an element of pressure multiplication. Higher DA will result in lower boost every time.
May 19, 2016 | 10:35 AM
#1509
Thread Starter
Joined: Jan 2006
Posts: 16,282
Likes: 438
From: Huntsville, AL
So for my statement earlier about loosing 1.5-2psi, the ambient temps were nearly identical. Only differences being before I was spraying meth in the inlet, and now I do not have meth in the inlet and have the 1/2" spacer plate. The meth shouldnt affect boost an appreciable amount, but will help the temperature.
Doing some public school math, a 25F drop in temperature from 100F to 75F will decrease pressure about 4.5%. I saw a ~8% drop in pressure, so more than can be explained by just the temperature drop. This is of course considering a constant ambient pressure, which has a much greater affect on DA than temperature.
Doing some public school math, a 25F drop in temperature from 100F to 75F will decrease pressure about 4.5%. I saw a ~8% drop in pressure, so more than can be explained by just the temperature drop. This is of course considering a constant ambient pressure, which has a much greater affect on DA than temperature.