hdorre Posted February 2, 2014 Report Share Posted February 2, 2014 I didn't read the thread, so sorry if these have been already mentioned. I just took a quick look at the thread title.. Did you check your BOV or BPV? Is your waste gate internal or external? Internal wastegates seem to be more prone (with us at least) to cause over boosting. I'm more familiar with turbos, so these may not apply to SC'd cars. On 5/8/2011 at 7:38 PM, Kranny said: On 5/8/2011 at 7:35 PM, 'Maxim' said: It hurts me inside when I read stuff like this and remember you're 15 LMFAO so true Mitsubishi 3000GT (Old Build) Headunit: Pioneer 80PRS Frontstage: (2) McLaren Audio MLT-2 Tweeters & (4) PRV Audio MR Series Neo 6.5" Mids Substage: 4 15" Hybrid Subs - Tantric Motors & Sundown Softies Amps: Banda 2.4D Amp (Tweets), American Bass VFL 350.4 (Mids), and (2) Ampere 3800s Electrical :Singer 260A Alt & JY Power Lithium 2005 Chevy Colorado Ext Cab Headunit: Pioneer 80PRS Frontstage: 4 PRV 700Ti Tweets & 6 10" Delta Mids on 3000wrms Substage: 6 Fi BTL 18s in a 4th Order Walkthrough on 3 Wolfram 4500s Electrical: Singer "390" and JY Power My Official Feedback Thread Link to comment Share on other sites More sharing options...
OrionStang Posted February 3, 2014 Author Report Share Posted February 3, 2014 The blow-off valve works different on a s/c engine than a turbo'd one. Really, the only thing that can cause overboost is a clog in the exhaust. Could be an exhaust valve stuck shut, but that would introduce other factors. SMD Super Seller My Feedback Thread Link to comment Share on other sites More sharing options...
bcpballer64 Posted February 3, 2014 Report Share Posted February 3, 2014 Dont know that it applies since the seafoam was introduced through the tank but if you suck seafoam though an intake vacuum line (to clear the carbon out of intake system) it will make your exhaust thick as fuck and you have to keep the idle up or it will die. Seafoam maybe making thicker exhaust? Or it bumped your octane up enough your timing got advanced enough to dumo unburmt fuel into your exhaust Idk im just spitballing "The strongest reason for people to retain the right to keep and bear arms is, as a last resort, to protect themselves against tyranny in government." -- (Thomas Jefferson) Link to comment Share on other sites More sharing options...
OrionStang Posted February 3, 2014 Author Report Share Posted February 3, 2014 Seafoam only went in the gas tank. It does not affect octane. However, I wonder if it broke down any gunk in my already broken head gaskets, causing a full-on leak. SMD Super Seller My Feedback Thread Link to comment Share on other sites More sharing options...
bcpballer64 Posted February 3, 2014 Report Share Posted February 3, 2014 Seafoam only went in the gas tank. It does not affect octane. However, I wonder if it broke down any gunk in my already broken head gaskets, causing a full-on leak. Seafoam doesnt increase octane? I thought it was considered an octane booster. And the head gasket might ne a good guess. "The strongest reason for people to retain the right to keep and bear arms is, as a last resort, to protect themselves against tyranny in government." -- (Thomas Jefferson) Link to comment Share on other sites More sharing options...
boom50cal Posted February 3, 2014 Report Share Posted February 3, 2014 The blow-off valve works different on a s/c engine than a turbo'd one. Really, the only thing that can cause overboost is a clog in the exhaust. Could be an exhaust valve stuck shut, but that would introduce other factors. Betting on that exhaust valve issue. Maybe not stuck but surely fucked up. On 1/4/2013 at 9:31 PM, HatersGonnaHate said: Wow. 184 posts and I think you're a fucking asshole. Link to comment Share on other sites More sharing options...
OrionStang Posted February 3, 2014 Author Report Share Posted February 3, 2014 It does not. Its a detergent, thats all. But if I had a small headgasket crack, that fixed itself through expansion and carbon in the gap, then the Seafoam could have theoretically broke down that carbon (or other shit), causing the head gasket to fail completely. SMD Super Seller My Feedback Thread Link to comment Share on other sites More sharing options...
Mtnbikecrazy55 Posted February 3, 2014 Report Share Posted February 3, 2014 Blinking CEL is a catastrophic missfire condition I hate long signatures.... ...what the fuck is wrong wiht you you fucking fuckity fuck fuck head... Mtnbikecrazy55 Feedback Link to comment Share on other sites More sharing options...
ParDeus Posted February 3, 2014 Report Share Posted February 3, 2014 You have a fucked exhaust valve, imo. Cats don't plug that quick. It takes a year of a 10:1 AFR to plug a modern cat, at least. I should ask, is this a screw, roots, or centrifugal? I've seen SeaFoam type shit ruin the teflons on a roots blower. Teflon breaks, into the cylinder, then the ex. valve catches it in the seat, and bends the stem/sticks the valve. Run a leakdown and compression check. I'm willing to bet this is something really bad, sorry. UNLESS... Maybe the seafoam ate an injector seal, plugged it partially, and detonated the shit out of a cylinder. Can you see duty cycle with your ecu? Check your valve springs. Link to comment Share on other sites More sharing options...
ParDeus Posted February 3, 2014 Report Share Posted February 3, 2014 Also, for this application an old school spark plug is best. My 4000hp Fuel Altered (Top Alcohol engine) used $1.27 Autolites or NGK TR's. If you look at any race car, they have old school plugs. I have tested every plug on Earth damn near, on the dyno, and a simple plug makes more power every time, especially on a blower motor. The rest is marketing. Also, I'd advise against fuel additives on a blower motor, there is ethanol in the fuel anyways. You can run 1oz of acetone per 10gal if you want, usually good for 3hp. Link to comment Share on other sites More sharing options...
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