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Not really. I wasn't expecting it to hit 200* charge temps either. (thats with the water/meth going)
I haven't been able to look at plugs much so I'm keeping it conservative until I can. It's pulling 7* out of it at 200*. Which I'm sure is way too much. The IAT is buried in the manifold quite a bit so it might not be saturating the sensor with water/meth. Or it may be pretty much flashed to a gas by the time it hits the intake.
I suppose it might just be getting hot around 5800 so it feels like power is falling back a ton as it pulls a ton of timing.
But it felt similar at 165* and 4lbs of boost. (no water/meth) I’ll drop the boost back down to 4lbs and keep the water meth on and try 19* or so. Need to work on getting cooler air to the turbos too.
Might be worth the time and aggravation to pull a pair of valve springs and check them yourself. At least you'd eliminate one thing from the list and confirm pressure at your lift. Not many things cause a wall at 6000 rpm with no symptoms. Car looks good though!
Picked up some Hawk HP plus pads and found out I have 4cyl brakes installed so I can't use them. If anyone needs some new hawk pads cheap let me know.
Bought an open box $60 set of EBC Yellow stuff pads to hold me over till a brake swap. Figure when I upgrade brakes I'll go big so no reason to swap over the 5.0 brakes until I do.
Installed some $106 ebay coil covers. Had to cut the driver side a ton to fit around the alternator mounting and aft breather area. But I think it turned out nice.
Picked up some $1.25 sheets of ABS molding plastic on Ebay. Used it to make some covers to put around the air filters so I wasn't pulling in so much hot air from the engine bay. This stuff is great to work with. Little heat and it will bend or mold to an area super easy. Hoping it's not too hot under the hood for it, but we'll see.
Here are all the big holes.
Passenger side
Last edited by Forcefed86; 06-19-2020 at 09:02 AM.
Got to play with the meth injection DC VS pressure a bit. Should help with the DC VS boost guessing. Also upped the 2 nozzle sizes from 7gph to 12gph.
Needle jumps quite a bit so these are just rough estimates. Used this formla to come up with the flows at differnet pressures. Nozzles are rated at 100psi.
1. Divide new pressure by 100 psi (standard nozzle pressure)
2. Obtain square root with calculator
3. Multiply result by nozzle size at 100 psi
Excellent information! Thanks for posting. The only D.C. Testing I did was visual over a bucket, but I had wanted to do it versus pressure as you to get an idea of how "linear" it was.
Have you tried anything else to get the car to stop laying over up top?
Nope been too hot here lately (over 100*) so I haven't been driving it any. Plan to drop it back down to 4lbs and not pulling any timing based on IAT's. Maybe that's the issue.
Got to play with the meth injection DC VS pressure a bit. Should help with the DC VS boost guessing. Also upped the 2 nozzle sizes from 7gph to 12gph.
Needle jumps quite a bit so these are just rough estimates. Used this formla to come up with the flows at differnet pressures. Nozzles are rated at 100psi.
2 12gph nozzles on a "Y". Flow wasn't measured though. I just wanted the pressure readings. Flow is is calculated based on the nozzles rating at 100 psi.
2 12gph nozzles on a "Y". Flow wasn't measured though. I just wanted the pressure readings. Flow is is calculated based on the nozzles rating at 100 psi.
Curious how much pressure increases with nozzles restricting flow at same DC? Also be interesting to note if measured flow equals calculated flow.
Wish I could have gotten a little more detailed info too, but my tinker time is limited lately. I had both my 12gph nozzles installed, but the pressure will differ quite a bit depending on nozzle size. These DC VS pressure readings will be specific to my setup.
Semi-relative info for others though. The pump doesn’t seem to do anything below 17% DC. You can hear it run but that’s about it. (think it was fighting my check valve) You can see the flow certainly isn’t linear though. Pressure/flow will also be higher with the engine running and more voltage.
Would be nicer to have the 300psi pumps for the added range. My current 24 gph worth of nozzles should flow around 41 gph @ 300psi.
Realistically I probably don’t need more than 10-12gph at my current 10lb boost level. Nice to know I can drop it back to around those levels if I need to though
Jugs just to reclaim my fluid. I was only looking at pressure VS DC. I calculated the “flow” based on the nozzles size VS pressure.
Using washer fluid at the moment. Plan to go to 50/50 soon. I don’t want to mess with the o-ring push-lock fittings swelling and leaking or I’d run 100% meth.
Wish I could have gotten a little more detailed info too, but my tinker time is limited lately. I had both my 12gph nozzles installed, but the pressure will differ quite a bit depending on nozzle size. These DC VS pressure readings will be specific to my setup.
Semi-relative info for others though. The pump doesn’t seem to do anything below 17% DC. You can hear it run but that’s about it. (think it was fighting my check valve) You can see the flow certainly isn’t linear though. Pressure/flow will also be higher with the engine running and more voltage.
Would be nicer to have the 300psi pumps for the added range. My current 24 gph worth of nozzles should flow around 41 gph @ 300psi.
Realistically I probably don’t need more than 10-12gph at my current 10lb boost level. Nice to know I can drop it back to around those levels if I need to though
Thanks 86. I'd expect pressure to be significantly increased at same DC with nozzles installed. Maybe a few data points to get a relative idea and interpolate the remaining. It seems this data would give you a true indication of how much flow with 2 12 nozzles at x DC.
Made it to the track again as well, but couldn’t leave on any real boost. 3 1.8x 60’s Trapped 130 ran 11.1x at 10lbs. Creeps to 11-12 by 6300. Doesn’t rev much over 6300. Just hangs right around there. Still not sure if this is a gear/converter issue or something else. Still won’t rev past 6300ish in 1st. So I have a hard time believing it’s the converter/gear.
Anyway goal was to run 11.49 and keep it a quick street car.
I've been tempted to build something similar with a cheap forged 5.3 and single turbo and 6 speed for a fun/cheap street car and 1/2 mile event setup.
That 6k rpm wall is so weird though.....Maybe try pulling the intake filters off entirely? I don't recall your intercooler setup but almost sounds like a weird intake or clogged intercooler issue or something.
07-13-2017, 03:27 PM
