BlackSpyderVR4
02-21-2015, 01:01 PM
Ok, So my car is only pulling 10 VAC at Idle (see video). It will stumble on and off when cold.
1) I did Pressure test and unless my vacuum leak is so big I can't hear are feel air coming out of it then Im almost positive I have 0 leaks. I sprayed and brushed water/soap on all connections and as much as I could on the plenum connections and I have 2 very very small leaks at 21PSI (One bubble will form every 2-3 seconds are so), I do not think that is causing the vac problem and another on the BOV connection about the same size at 21PSI. Im going to run the engine and just start spraying carb cleaner everywhere and see if I can find the leak.
2) So then I thought maybe I screwed up the engine build and my rings aren't sealing. So I ran car up, got everything nice and hot and did compression test. Results #1 151, #2 149, #3 155 and I still haven't broken in Engine, Didn't even bother checking the rear bank. I'm almost positive I didn't install the CAMS backwards because I don't think I would have those compression numbers if I did right….?
3) I'm going to go to auto zone and pick up a really cheap vacuum gauge here in a second and rule out the vac Gauge but I don't think thats the problem.
4) Adj cam gears (Stock Cams): I installed the 3SX (New Ones) that are suppose to be zeroed out perfectly. I degreed the engine and I believe I did it right. I got everything zeroed out and then did the +1, -3 like everyone recommends. Could this cause the bad Vacuum if I messed this up. From my readings Vacuum is caused by the Intake stroke so maybe the intake valves are exhaust valves are not opening/closing properly.
So, I'm out of ideas. Any help troubleshooting will be greatly appreciated. Here are two videos and build list below.
Disregard the Wideband. I have no down pipe installed and its just dangling by driveshaft.
https://www.youtube.com/watch?v=xXcxadyska8
http://youtu.be/UZbwVjhQhKc
Build List (Currently i still have Evo Maf installed)
DR STG 3 Heads, DR650s, Ninja Performance Rods, Wiseco Pistons/H-13 .200" Wirelock Pins, 3SX DP/Testpipe, Tanabe Catback, Greddy RS BOV, Oohnoo dual core FMIC, 15psi Kinugawa Wastegates, 3SX ADJ CAMS, Turbosmart MBC, Chrome ECU, 3.75" GM MAF/Translator, 1,000CC INJ, FueLab AFPR, 3SX fuel hat with hotwired Walbro 400 E85, Mishimoto Radiator, Solid Motor Mounts, Spec Stage 4+, Braced TC, Bellhousing Brace.
As Always thanks again!
Mike
1) I did Pressure test and unless my vacuum leak is so big I can't hear are feel air coming out of it then Im almost positive I have 0 leaks. I sprayed and brushed water/soap on all connections and as much as I could on the plenum connections and I have 2 very very small leaks at 21PSI (One bubble will form every 2-3 seconds are so), I do not think that is causing the vac problem and another on the BOV connection about the same size at 21PSI. Im going to run the engine and just start spraying carb cleaner everywhere and see if I can find the leak.
2) So then I thought maybe I screwed up the engine build and my rings aren't sealing. So I ran car up, got everything nice and hot and did compression test. Results #1 151, #2 149, #3 155 and I still haven't broken in Engine, Didn't even bother checking the rear bank. I'm almost positive I didn't install the CAMS backwards because I don't think I would have those compression numbers if I did right….?
3) I'm going to go to auto zone and pick up a really cheap vacuum gauge here in a second and rule out the vac Gauge but I don't think thats the problem.
4) Adj cam gears (Stock Cams): I installed the 3SX (New Ones) that are suppose to be zeroed out perfectly. I degreed the engine and I believe I did it right. I got everything zeroed out and then did the +1, -3 like everyone recommends. Could this cause the bad Vacuum if I messed this up. From my readings Vacuum is caused by the Intake stroke so maybe the intake valves are exhaust valves are not opening/closing properly.
So, I'm out of ideas. Any help troubleshooting will be greatly appreciated. Here are two videos and build list below.
Disregard the Wideband. I have no down pipe installed and its just dangling by driveshaft.
https://www.youtube.com/watch?v=xXcxadyska8
http://youtu.be/UZbwVjhQhKc
Build List (Currently i still have Evo Maf installed)
DR STG 3 Heads, DR650s, Ninja Performance Rods, Wiseco Pistons/H-13 .200" Wirelock Pins, 3SX DP/Testpipe, Tanabe Catback, Greddy RS BOV, Oohnoo dual core FMIC, 15psi Kinugawa Wastegates, 3SX ADJ CAMS, Turbosmart MBC, Chrome ECU, 3.75" GM MAF/Translator, 1,000CC INJ, FueLab AFPR, 3SX fuel hat with hotwired Walbro 400 E85, Mishimoto Radiator, Solid Motor Mounts, Spec Stage 4+, Braced TC, Bellhousing Brace.
As Always thanks again!
Mike