How Good Is The Procharger Bypass?
How Good Is The Procharger Bypass? Im talking about the stock one here. My car is making about 12 psi at like 4500 rpm and then just sitting there... I have checked the blower for belt dust and there wasnt any to find. I have T Bolted everything and Double checked all my connections to my manifold. Im stumped, the only other two things I can think of is that its not getting enough air due to the crappy intake tubing they give you or the bypass is leaking.. I dont imagine it leaking about 5+ psi though. Im just wondering what you all think this could be..
TECH Regular
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What size pullies are you running? What kinda cubes, cam, heads intake etc are you running? Are you just moving so much air the procharger is out of breath? Or maybe needs to be geared up (bigger/smaller pullies)
I have a custom pulley for the blower 3.20" and a 7.65 crank pulley.. It over spins the blower at 6600 rpm... Its a D1SC on a 383 LT1 with trick flow cncd heads.. and a fairly large cam... im not worried about that.. it flat lines.. There is something wrong here
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The air filter and inlet elbow were not designed to max out a D1SC on you car. They were designed for the majority of applications with a P1SC. First I would clean or replace your air filter and check the results. You may also be able to substitute a larger filter for the one supplied with the kit.
I would say that its belt slip though if the output flat lines. There is minimal contact with a 3.20 pulley considering how hard you're trying to drive the blower.
I would say that its belt slip though if the output flat lines. There is minimal contact with a 3.20 pulley considering how hard you're trying to drive the blower.
CountryMuzicZ28 I too have a 3.2 custom Blower pulley (ASP made me one) and a 7.625 crank pulley. At 6600 you are over spinning the Blower, I plan to shiftmy car at 6200 and the blower rpm with that combo is 60571 out of the available 62000.
If you spin the motor to 6600 the blower is spinning to 64478 thats 2478 blower rpm PAST MAX impellar speed.
As effeceint as you motor Sounds you may be maxing out the D1SC at 12lbs I have seen about 3 LT1 style cars with setups like yours and mine max out around 12lbs. I have yet to get mine fully together but I recieved my SDCE setup the other day and I have been wrenching away on my VRE 383 shortblock with LE ported AFR heads.
If you spin the motor to 6600 the blower is spinning to 64478 thats 2478 blower rpm PAST MAX impellar speed.
As effeceint as you motor Sounds you may be maxing out the D1SC at 12lbs I have seen about 3 LT1 style cars with setups like yours and mine max out around 12lbs. I have yet to get mine fully together but I recieved my SDCE setup the other day and I have been wrenching away on my VRE 383 shortblock with LE ported AFR heads.
Its the pipe that goes through the front bumper that is leaking.. Thats the only hose I didnt T bolt. I put two clamps on it for now since the hydraulic place is sold out of 2.88" t bolts and I gained a pound or two.. Since I have an HKS SSQ along with my bypass I put some hose pliers around the hose before the bypass and I also gained about a lb or two. So that would put me in the ball park of about 15psi. Im going to figure out what to do with the bypass and then when the T bolts are in I guess thatll fix that. Ill keep you all updated.
Another concern though.. I was coming home from putting those clamps on and you all know how we have to "test" to see if it helped. So I put it in 3rd gear around 65 mph (3.73) and floored it and the car went sideways and it was a nice sharp hit from the gas pedal, no delay. Then I tried again since I couldnt watch the boost guage to well and it like bogged when I nailed it.. Then it picked up and took off.. what the hell was that??
Another concern though.. I was coming home from putting those clamps on and you all know how we have to "test" to see if it helped. So I put it in 3rd gear around 65 mph (3.73) and floored it and the car went sideways and it was a nice sharp hit from the gas pedal, no delay. Then I tried again since I couldnt watch the boost guage to well and it like bogged when I nailed it.. Then it picked up and took off.. what the hell was that??
Last edited by CountryMuzicZ28; Jun 13, 2006 at 07:39 PM.
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Originally Posted by Exotic Performance Plus
The combination of the large cam, 383 cubic inch, and the low 8.5/1 compression ratio may be too much for the D-1SC. I have seen it happen before. Bob
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Verdad Gallardo Ok well updating here.. I did a few tests.. At first I took the filter off but I didnt drive it, I figured I should take the entire thing off since the opening faces back instead of having something open facing forward. I hit 18 psi easy at 6K. So in turn **** THAT FILTER SNORKLE BS!!! car is a completely different animal. At first when I did it the car lost some power up top and the headers were glowing, I richened it up when I got home and HOLY ****. No detonation or anything though (PCM for less doesnt believe in timing LOL).. I think I screwed my tranny up a bit though. It rattles in 1st 2nd and 3rd but when I shift into 4th its quiet and normal.. And the shifter shakes in the first 3 gears.. Not a tranny mount, its more of a rattling and vibrating rather then the tranny jumping up and down. Not the clutch either since it doesnt happen in 4th.. Hmm. DUnno on this but out comes the tranny again! 
I just got my procharger kit, and i was wondering whats in the lil box. I pop it openand start laughing at the air filter. Is this a joke? I can now see why EPP was having the filter crush when they put a pipe in place of this crummy intake "hat".
I picked up a big K&N cone from a mustang procharger kit off a buddy that used to run a shop, its iterally 4 times as big. Is there no room for more filter or what? Not sure if the stang kit was a P1 or D1, but its HUGE in comparion to the joke in a box i got!
I picked up a big K&N cone from a mustang procharger kit off a buddy that used to run a shop, its iterally 4 times as big. Is there no room for more filter or what? Not sure if the stang kit was a P1 or D1, but its HUGE in comparion to the joke in a box i got!
Last edited by BIG BAD BLACKSS; Jun 18, 2006 at 07:30 PM.
I can now see why EPP was hasing the filter crush when they put a pipe in place of this crummy intake "hat".
Dunno if he has anything he can send out, but you have to loose your a/c condensor to move the raiator forward to use that setup if i remember correctly. Id really hate to loose my a/c so i dunno what im gonna do yet.
I am trying to figure out what kind of intake to hook up to this thing now.. I think the inlet is like 3.75 inches, So im going to see if I can get a 90degree bend and put all solid hosing to maybe like the front bumper or something where it wont get wet. I dunno.. I havent really looked at it since the tranny got messed up, just kinda disgusted... owell.. But yea definatly something to try is taking that POS thing they call an intake, off.. Just dont like drive alot with no filter.. I cant imagine that being good, lol.. Someone else try this please though so I can know its definatly their intake and not my particular setup.. ty
Nick
Nick
I can tell you what I wound up doing. I bought a 4 inch to 3 1/2 inch 90 degree silicone elbow on ebay and bought from Summit a 3 1/2 180 degree u-bend and ran a 9 inch cylinder filter on the end of the u-bend. We'll see how well it worked out this week when I go back to the dyno
Wicked did you retain the A/C system, or did you have to ditch it?
has anyone tried a Y setup like the split for the twin intercoolers, but on the intake, and run 2 small air filters? Is there room for that? Unfortunatly i havnt installed my kit and probably wont for a couple months, so im not sure what it looks like down there yet.
has anyone tried a Y setup like the split for the twin intercoolers, but on the intake, and run 2 small air filters? Is there room for that? Unfortunatly i havnt installed my kit and probably wont for a couple months, so im not sure what it looks like down there yet.
Originally Posted by wicked_95z
I can tell you what I wound up doing. I bought a 4 inch to 3 1/2 inch 90 degree silicone elbow on ebay and bought from Summit a 3 1/2 180 degree u-bend and ran a 9 inch cylinder filter on the end of the u-bend. We'll see how well it worked out this week when I go back to the dyno
BlackSS- no all the a/c stuff is gone to include the ducting in the dash
Country- I have had my silicone 90 on there for about 2 months now and it doesnt show any signs of melting. Just FYI. I also thought about the y for the blower inlet just never went through with it.
Country- I have had my silicone 90 on there for about 2 months now and it doesnt show any signs of melting. Just FYI. I also thought about the y for the blower inlet just never went through with it.