SFI 25.2 Mustang/LSx build "The Renegade"
03-16-2012, 09:50 PM
#4522
Running into some small issues. I've got 2 cylinders that are not firing, pulled the injectors and they are off to get checked/cleaned out tomorrow. Going to check the wiring harness this weekend to make sure the drivers are working right.
Fired the car up with the new tune and eventhough its only on 6 cylinders, it still idles well with 4.5:1 Air/Fuel. At 5:1 it will warm up to 155 degrees and not really go any hotter with 3/4 gallon of water total in the motor with no recirc. Its seems to build boost soo much easier, just foot braking it and still trying to get the A/F right it will go into 1-1.5# of boost at 2300rpms.
I tenatively put the car on the scales and I was surprised. I'll leave it at that. Hopefully
Fired the car up with the new tune and eventhough its only on 6 cylinders, it still idles well with 4.5:1 Air/Fuel. At 5:1 it will warm up to 155 degrees and not really go any hotter with 3/4 gallon of water total in the motor with no recirc. Its seems to build boost soo much easier, just foot braking it and still trying to get the A/F right it will go into 1-1.5# of boost at 2300rpms.
I tenatively put the car on the scales and I was surprised. I'll leave it at that. Hopefully
03-18-2012, 11:43 AM
#4523
Running into some small issues. I've got 2 cylinders that are not firing, pulled the injectors and they are off to get checked/cleaned out tomorrow. Going to check the wiring harness this weekend to make sure the drivers are working right.
Fired the car up with the new tune and eventhough its only on 6 cylinders, it still idles well with 4.5:1 Air/Fuel. At 5:1 it will warm up to 155 degrees and not really go any hotter with 3/4 gallon of water total in the motor with no recirc. Its seems to build boost soo much easier, just foot braking it and still trying to get the A/F right it will go into 1-1.5# of boost at 2300rpms.
I tenatively put the car on the scales and I was surprised. I'll leave it at that. Hopefully
Fired the car up with the new tune and eventhough its only on 6 cylinders, it still idles well with 4.5:1 Air/Fuel. At 5:1 it will warm up to 155 degrees and not really go any hotter with 3/4 gallon of water total in the motor with no recirc. Its seems to build boost soo much easier, just foot braking it and still trying to get the A/F right it will go into 1-1.5# of boost at 2300rpms.
I tenatively put the car on the scales and I was surprised. I'll leave it at that. Hopefully
I bet it does build boost a lot easier. I've always heard of people saying E85, and Methanol's added exhaust volume going out the exhaust port will aid in spool.
As far as the weight, hope you don't end up having to throw 100#'s on the nose so that it will hook!
03-19-2012, 05:01 PM
#4525
Hope to see you out soon. Should be interesting with all the changes.
__________________
95 Pontiac Formula- Stock engine with ATI Procharger, Moser 12 bolt w/4:30 gears, Rossler trans, Neil Chance 4000 stall, M/T ET streets, 10.914@ 121.90mph, 1.452 60ft. GMHTP November 2010 Feature Car. Check it out at:
https://www.motortrend.com/features/...ebird-formula/
http://www.youtube.com/watch?v=abZ1z...ature=youtu.be
95 Pontiac Formula- Stock engine with ATI Procharger, Moser 12 bolt w/4:30 gears, Rossler trans, Neil Chance 4000 stall, M/T ET streets, 10.914@ 121.90mph, 1.452 60ft. GMHTP November 2010 Feature Car. Check it out at:
https://www.motortrend.com/features/...ebird-formula/
http://www.youtube.com/watch?v=abZ1z...ature=youtu.be
03-19-2012, 11:24 PM
#4527
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03-22-2012, 07:03 PM
#4529
Yeah, I hurt the head gasket and a piston last year, had the fuel pump back out and it went lean. It hurt the passenger side head gasket and burned the very edge of one piston. I had the pistons checked and there was only one that was hurt. Waiting on a head gasket to put it back together.
I am very excited to see how it runs this year with almost 1# per HP.
I am very excited to see how it runs this year with almost 1# per HP.
03-23-2012, 09:57 PM
#4532
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Yeah, I hurt the head gasket and a piston last year, had the fuel pump back out and it went lean. It hurt the passenger side head gasket and burned the very edge of one piston. I had the pistons checked and there was only one that was hurt. Waiting on a head gasket to put it back together.
I am very excited to see how it runs this year with almost 1# per HP.
I am very excited to see how it runs this year with almost 1# per HP.
i see some 6's in your future if you do
03-25-2012, 02:29 AM
#4533
Yeah, I hurt the head gasket and a piston last year, had the fuel pump back out and it went lean. It hurt the passenger side head gasket and burned the very edge of one piston. I had the pistons checked and there was only one that was hurt. Waiting on a head gasket to put it back together.
I am very excited to see how it runs this year with almost 1# per HP.
I am very excited to see how it runs this year with almost 1# per HP.
In looking at those rules for MIR ODR it seems that they are more wide open than duck's rules and some other ODR classes I have seen. It seems some ODR classes nowadays are scared of the twin 91mm turbo's especially the 94's.
I also find it funny that they restrict you fi guys to a 2 speed and nitrous to a 2 or 3 speed auto.
03-25-2012, 11:10 AM
#4534
3000#'s at MIR.....I'd say that's enough hp to get the job done
In looking at those rules for MIR ODR it seems that they are more wide open than duck's rules and some other ODR classes I have seen. It seems some ODR classes nowadays are scared of the twin 91mm turbo's especially the 94's.
I also find it funny that they restrict you fi guys to a 2 speed and nitrous to a 2 or 3 speed auto.
In looking at those rules for MIR ODR it seems that they are more wide open than duck's rules and some other ODR classes I have seen. It seems some ODR classes nowadays are scared of the twin 91mm turbo's especially the 94's.
I also find it funny that they restrict you fi guys to a 2 speed and nitrous to a 2 or 3 speed auto.
03-25-2012, 11:19 AM
#4535
So I took the vacuum pump and tank off in favor of a larger puke tank and lines. I picked up some raw material to make some 1.25" burn down tubes from Cebe out in California. Going to run 1.25" tubing from each valve cover to a 1.2 gallon tank. With the amount of fuel you run on a methanol combination, the vacuum pump just wouldn't work.
I spent most part of the morning working on 2 new tanks. I fab'd a 1.2 gallon puke tank with dual 1.25" inlets and dual 1.25" filters. Its got a 1/4" NPT fitting on the bottom for a petcock and a -10 fitting to vent my turbo drain tank. I ordered some 1.25" hose from Mcmaster and using some T bolts to connect.
Made a new turbo drain tank, out of some 4" round tubing, 7" long. Instead of a 12 off the turbo, I am using 1.25" aluminum tubing to the catch tank and the catch tank is scavenged by the dry sump with a check valve inline and a turbowerx exa pump. That was the last combination I tried last year that fixed the low mounted turbo oiling problem. I'll take some pics of the tanks shortly.
I spent most part of the morning working on 2 new tanks. I fab'd a 1.2 gallon puke tank with dual 1.25" inlets and dual 1.25" filters. Its got a 1/4" NPT fitting on the bottom for a petcock and a -10 fitting to vent my turbo drain tank. I ordered some 1.25" hose from Mcmaster and using some T bolts to connect.
Made a new turbo drain tank, out of some 4" round tubing, 7" long. Instead of a 12 off the turbo, I am using 1.25" aluminum tubing to the catch tank and the catch tank is scavenged by the dry sump with a check valve inline and a turbowerx exa pump. That was the last combination I tried last year that fixed the low mounted turbo oiling problem. I'll take some pics of the tanks shortly.
03-25-2012, 01:08 PM
#4537
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Love this thread and all the fab work youve done but i have a stupid question what are burn down tubes and what are they for? Are they just for alky cars? Good luck with that monster and keep up the good work
03-25-2012, 01:24 PM
#4538
Burn down tubes are usually found on alcohol/nitro combinations. They vent the crankcase to a tank that can contain the engine oil/fuel in the case of a blown motor/pressurized crankcase. Basically its 2 x 1.25" crank case vent tubes to a tank that can hold the junk that comes out.
03-25-2012, 07:01 PM
#4539
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very interesting,
My turn for a stupid question on the same topic.
You said- "With the amount of fuel you run on a methanol combination, the vacuum pump just wouldn't work'
Since i dont know my *** from a hole in the ground when it comes to this,
Why and what does the amount of fuel you run effect the blow by?
My turn for a stupid question on the same topic.
You said- "With the amount of fuel you run on a methanol combination, the vacuum pump just wouldn't work'
Since i dont know my *** from a hole in the ground when it comes to this,
Why and what does the amount of fuel you run effect the blow by?
03-25-2012, 07:06 PM
#4540
very interesting,
My turn for a stupid question on the same topic.
You said- "With the amount of fuel you run on a methanol combination, the vacuum pump just wouldn't work'
Since i dont know my *** from a hole in the ground when it comes to this,
Why and what does the amount of fuel you run effect the blow by?
My turn for a stupid question on the same topic.
You said- "With the amount of fuel you run on a methanol combination, the vacuum pump just wouldn't work'
Since i dont know my *** from a hole in the ground when it comes to this,
Why and what does the amount of fuel you run effect the blow by?
With that being said, the amount of fuel a methanol motor injests, some will pass through the rings and get into the oil, thats why most guys say you need to change the oil every race day or burn the methanol out. The methanol does increase blow by and crankcase pressure. I have not seen a turbo/supercharged methanol combo run a vacuum pump in drag racing.