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does anyone boost the SOHC b6?

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    does anyone boost the SOHC b6?

    just wondering. and if so was it worth it?


    '88 323 sedan, K-swapped..

    '03.5 Mazdaspeed Protege - miss it so much..

    '01 Dodge Ram 3500 Cummins - 323 hauler

    #2
    Yeah there is a guy around here that had one. Search it up. I say Shave the head so your compression ratio raises and run ITBs since you have space for long runners for more torque.

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      #3
      ok. and ITB's would murder my bank account. lol


      my single cam runs really strong and i think it could handle a slight boost setup.


      '88 323 sedan, K-swapped..

      '03.5 Mazdaspeed Protege - miss it so much..

      '01 Dodge Ram 3500 Cummins - 323 hauler

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        #4
        Turbo is more expensive

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          #5
          but ITB's still arnt turbo
          "See that car, in the 80's that car was deadly." Random man to his son while passing the GTX in a parking lot

          Originally posted by neuspeedescort
          the proper spelling would be "Launchabilitiness" i do believe.
          -88' Mazda 323 GTX, 1.8t, Modified Magazine May 2012
          -88' Mazda 323 GTX, caged and ready for dirt
          -93' Mazda Miata, half caged
          -09' Mercedes C63 AMG
          -87' Toyota Land Cruiser, 33's with slight lift, safari style!

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            #6
            Originally posted by trailrider098 View Post
            but ITB's still arnt turbo
            QFT.

            Theres no better boost for an underpowered motor then a turbo.
            Mazda
            1988 Black 323 GT
            DOHC 16 VALVE TURBO

            2013 Velocity Red Mica Mazdaspeed3

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              #7
              This is my b6 turbo setup, in my 97 Ford Aspire. I know, I know the cone is under the hood, but there's a story to that. This is my "winter" set-up, another words, I've got all the cold air I need for the iceracing season this car is primarly setup for. I've also got a "Coolingmist vari-cool II" water/methanol injector on this too. Here's the link to that post:


              But check out these pics: Click on them to make larger

              What you're seeing is a hand made stainless manifold and downpipe. I made the tubes and had the flanges waterjet cut using the gaskets as templates. The "teardrops" are now round.
              The cutting job was a favor payback, as was the welding. The turbo I decided on using is a KKK K03, It's what you'd find on an Audi or VW 1.8 liter 20 valve eng. The Audi guys complain they run out of top end with these, so I figured it should run my sohc b6 just fine. The upgrade the audi guys go to from this is whats called the kkk k04. It's got a slightly larger output, but bolts right into the k03 spot. For the K03's, they're all over eBay for cheap either as used from Audi guys doing upgrades, or new Chinese or Japanese knock-offs. The oil supply line is run from a simple tee at the pressure sender, and I put a .030 restrictor in it at the turbo, but later got panicky and changed it to a .060. I ran the one water line from where that little 1/4" pipe was sticking out out the head. It just pulls out and I "tapped" in a 1/8" npt by 5/16" hose barb in its place, very easy! The other line comes off the little 1/4" tube on that rusty steel water pipe, I just cut the bead off the end of it and placed a compression fitting with another 5/16" barb on it.

              That "junk" oxygen sensor pointing at the radiator fan is just a temporary plug, the real bung plug fell out during a test drive, because some idiot thought just anti-seize paste alone would keep it in, who knew you'd have to actually use a wrench.
              That by the way is a spare bung hole, for accomodating a "Festy" configuration, the real oxy sensor in underneath and points towards the passenger side. The "air in" tube for the pcv system is not blowing any oil out at all! If you look close, you can see I've used this thing call a "Krankvent" between the pcv valve and the intake manifold. Think of it as a kind of pcv valve on steroids that will hold back about 75psi.
              You can see that Forge bypass valve which is constantly recirculating air back to in-front of the turbo as long as the vacuum is present. This really keeps things spooled up nicely, and so I've got boost at 2,500 rpms in second gear. Pretty good considering that this is not a ballbearing turbo!
              I'm running 6 to 7 pounds of boost with this setup with the meth injector on it now, I'm going to push that up to 8 pounds. From what I've read in Corky Bell's book "Maximum Boost" and what I've gleaned from the Ray Hall turbocharging site, I've got a formula that says a 6.8% hp gain per pound of boost. So by my calculations, with a roughly 82 hp starting point, I'm thinking I've gained an additional 33 to 39 hp at 7 pounds of boost.

              This last pic is from underneath, you can see both waterlines, the real oxysensor, and the oil drain back to the pan.

              This was by no means easy or cheap to do. My goal was to get the hp out of my exsisting clean b6 that I already had to work with, and learn the art/science of turbocharging. You gotta want it!

              __________________
              Last edited by iceracerdude; 06-26-2009, 06:01 PM.

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                #8
                i also boosted a b6 sohc in my 88 323 about a year and 1/2 ago, i had a bad boost spike (15-18psi)and just said screw it and keep giving it and blew the ringlands on a piston. i didn't care at that point, cause i was getting ready to do a bp swap and boosting it also. before the bad boost spike it ran great.
                go to 323preformance.com and search for rab thats my name over there, and there should be some good info about my set-up.
                also i have those same rims on my 323. what your susp. set-up?
                Last edited by ryan1; 06-27-2009, 12:29 AM.
                5 boosted bp cars,why...

                Comment


                  #9
                  Hey iceracrdude how many miles did the engine have on it before you boosted and did you do a port and polish before hand? Did you have to do anything with the ecu like re flash it or get a chip?

                  Comment


                    #10
                    WHY O WHY would you do that yea its different but when theres better and cheaper choices out there. just get a mx3 1.6 dohc or a miata 1.6 motor and boost that. or even better a bp and boost that
                    like lil wayne says: i wish i can **** every girl in the world.

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                      #11
                      IMHO is it even worth it

                      you said it puts out like 82 stock and you gained at the most 40 thats only like 120 HP and is that even at the wheels?
                      1996 V6 Escort

                      1993 escort wagon DE/ZE hyrbid, ported heads, 5 lbs

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                        #12
                        Originally posted by Threetwenty3 View Post
                        Hey iceracrdude how many miles did the engine have on it before you boosted and did you do a port and polish before hand? Did you have to do anything with the ecu like re flash it or get a chip?
                        I was told there was about 39,000 miles on the engine when I got it? It was imaculate under the valve cover! No port and polish, remember, I can force as much into it as it can stand, with 2" all the way to the back. I'm running a stock Aspire ecu which makes it run rich, with a flyin miata voltage clamp on the oxy sensor for tip in. Stock fuel pump to!

                        IMHO is it even worth it
                        you said it puts out like 82 stock and you gained at the most 40 thats only like 120 HP and is that even at the wheels?
                        Yeah, for what I'm using it for. This has been an evolution of sorts. I started by Iceracing a festiva, then upgraded that 1.3 (62hp lol)to this 1.6. Went throught the trans added a lsd and some cryo treatment. Then I changed to an Aspire and moved the 1.6 and trans into that, then turbocharged it later. The Idea then, was to beat my competitors with their 125hp x 130torque neons.
                        I now beat neons, focus's, bonnevilles, 626's, geo's, gran prix's, nissans, acura's, honda's, etc.
                        I took 2nd place over like 17 other guy's/cars last season.
                        Cause I'm still light, I can still make the turns and hand out spankings on the straights.


                        WHY O WHY would you do that yea its different but when theres better and cheaper choices out there. just get a mx3 1.6 dohc or a miata 1.6 motor and boost that. or even better a bp and boost that
                        Your right, I just happen to start with a simple very clean 1.6 sohc upgrade for the festy, and built on that. Oh yeah, If I had it to do over... The other thing is also, I knew this would be semi-exotic, pretty rare to do and all, and I knew I'll be able to sell this setup all day long, when I'm on to the next project.
                        I've got people waiting in line to buy this, so It's not like it's been a total waste.
                        I'm looking for a 90 something 323 at the moment to do the engine upgrades you've described. The Aspire is in storage till next winter, and I'm driving a 89 323 right now as my grocery gitter, and I've got a buyer bugging me for it.
                        ,
                        Last edited by iceracerdude; 07-01-2009, 06:47 PM.

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                          #13
                          Originally posted by oldschoolricer View Post
                          WHY O WHY would you do that yea its different but when theres better and cheaper choices out there. just get a mx3 1.6 dohc or a miata 1.6 motor and boost that. or even better a bp and boost that
                          the motor swap stuff for bf's is not document to well, unless its a b6t swap, i boosted the b6 sohc just to be diffrent and see what it could take and the b6did take 7-8 psi from a .42/.48 t3 on stock injectors and a 12 to1 fmu just fine, afrs were good all the way to redline.
                          5 boosted bp cars,why...

                          Comment


                            #14
                            Originally posted by ryan1 View Post
                            the b6did take 7-8 psi from a .42/.48 t3 on stock injectors and a 12 to1 fmu just fine, afrs were good all the way to redline.
                            Yeah I start spraying water/meth in at 4 psi. Thought I'd want it to stay cool in the summer, but now I'm just running the 323 and keeping the Aspire for the winter racing. The meth definitely adds some more bonus hp on the top.

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                              #15
                              mmm different.. y not just bolt on a twin cam head $100 and turbo that... that manifold wouldnt flow at all. wheres ur cooler at ? time to invest.

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