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Everything posted by BRAAP
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Most guys on here will tell you that they didn’t install a V-8 into their Z cars to get good mileage. Good fuel mileage is what their Nissan Sentra or TDI Jetta is for. If you are building the engine and still acquiring parts, plan for EFI and taller gearing as you already noted. Also, keep the induction, cam, and exhaust fairly mild. Not too mild or the v-8 conversion becomes a worthless exercise in spending lots of money and time. Now after you get the V-8 in the car, to improve its freeway mileage,. , Tune.. Tune... tune... Lots of tuning... higher tire pressures, narrower tires, lower ride height, close off the grill opening.
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Ok, Team Nissan started another thread, and in one of my replies in that thread, the concept of possibly actually doing this concept hit me. Even if it doesn’t produce big power, it “should” run good enough to be fun and have lots of WOW factor at the various Nissan shows and events. (Darn you Team Nissan! This totally goes against what I’ve always preached about always building as big as you can afford. This concept is starting to sound like a fun “do it only because you can” type project and it could end up being financially realistic, depending on how much machine work and parts research one is willing to do on their own of course.. ). First, the idea was a small displacement V-8. I thought why not use the SBC or SBF and just destroke the crap out of it. This would be a VERY over square set up, (I love OVER SQAURE engine designs, for less valve shrouding and because they are generally high winders.. ) Well I did some calculations and here is what I came up with.. If you could use the SBC or SBF block with the 4.030” bore, with the following custom stroke cranks; 2”-------stroke = 204 CID/ 3343 CC 1 3/4”---stroke = 179 CID/ 2933 CC 1 5/8”---stroke = 166 CID/ 2720 CC 1 1/2”---stoke = 153 CID/ 2507 CC 1 3/8”---stroke = 140 CID/ 2294 CC 1 1/4”---stroke = 128 CID/ 2098 CC Compression ratio with 4.030 bore, 2” stroke, true flat top pistons 58 CC head 7.2:1 64 CC head 6.7:1 Just for reference, same set up but with 1 1/4” stroke 58 CC head 4.9:1 64 CC head 4.6:1 1) A SBC block 4.030” bore, OE Vette 58 CC heads, or aftermarket heads, preferably AFR, use OE replacement over the counter common domed pistons for either the 302, 327 or 350, (differing pin heights to more closely match the rods you find), find a set of rods from another application that will work with either of the 3 different over the counter cheap domed pistons, then, with access to a lathe, you could machine your own billet single plane crank with a stroke around 2”, (adjust the actual stroke to put the pistons at zero Deck at TDC). You’ll have a “semi” budget high winding single plane V-8. 9-10K RPM should be doable even with cast pistons with a 2” stroke, add a cross ram ITB like pictures below. Lot so of wow factor with the hood up, and that cool high RPM single plane V-8 BRAAAAAAP with the hood down.. 2) Same scenario, but with flat top pistons for a boost-able 7.2:1 comp ratio, add either an Eaton M-112 super charger or a pair of hair dryers, 12-15 lbs of boost… 3) The lighter weight SBF 302 block, utilize the same game plans as described for the SBC, but has the potential for a bit of weight savings..
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Very cool nice ride.. So.. are you planning to fix that list of “don’t likes†be swapping a different body around the LS.. maybe an S-30 body for example?.. J/K Nice ride…
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The wire wheel and wire brush combo will do the trick, just lots of work getting around the details of the casting.
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I think it was that exact blown V-8 pictured above, (the one being ran), that was ran a miniature engine dyno built just for these engines, and it recorded something like 25 HP. That particular really didn’t run smooth, lots of misfires. Ron Tyler probably remembers better than I.
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Ooops. Sorry about that. Just got wrapped in the Miniature Internal Combustion Engine thing when I saw the video. Ok, back on topic, (Hoping the time spent calculating all this out helps make up for thread jacking.. ) Team Nissan, Is it the displacement that you after or the physical size of the engine due to being small displacement? What I’m getting at here is what if you could use the SBC or SBF block with the 4.030†bore, with the following custom stroke cranks? 2†stroke = 204 CID/ 3343 CC 1 ¾†stroked = 179 CID/ 2933 CC 1 5/8†stroke = 166 CID/ 2720 CC 1 ½†stoke = 153 CID/ 2507 CC 1 3/8†stroke = 140 CID/ 2294 CC 1 ¼†stroke = 128 CID/ 2098 CC Compression ratio with 4.030 bore, 2†stroke, true flat top pistons 58 CC head 7.2:1 64 CC head 6.7:1 Same but with 1 ¼ stroke 58 CC head 4.9:1 64 CC head 4.6:1 Now, being as the SBC 305 block can sometimes be had for free due to its not so popular following, it’s 3 ¾†bore with a .030†over bore, (3.780†bore) with those same strokes offers the following displacements, 2†stroke = 180 CID/ 2950 CC 1 ¾†stroke = 157 CID/ 2573 CC 1 5/8†stroke = 146 CID / 2393 CC 1 ½†stroke = 135 CID/ 2212 CC 1 3/8†stroke = 123 CID/ 2016 CC 1 ¼†stroke = 112 CID/ 1835 CC Compression ratio with 3.780 bore, 2†stroke, true flat top pistons 58 CC head = 6.5:1 64 CC head = 6:1 I dint; run the itty bitty 1 ¼†stroke comp ratio as I feel it would just be too low… hmmm// 70 PSI of boost… Hmm…. If it were me, I’d choose the larger bore for a few reasons. 1 being valve shrouding, the other is for a given displacement, it allows for more RPM for a given pistons speed. Sport bikes, F-1 etc are big on over square engine for that reason and others…
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Very nice. Clean, uncluttered, well executed power train conversion, 124 MPH trap = incredible street performance. A sports car that any discerning sports scar enthusiast could truly appreciate on many levels. Nice car.
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Not production by the definition of the original post, but the same as the last post. Ron Tyler and myself would attend the Pacific Rim International Modeling Exposition every year back when it was held in Eugene. Quite a few of those miniature V-8's, all being scratch built. Many guys casting their own parts, pistons, blocks etc. There were scale air cooled VW, Harley V-twin, Merlin V-12, several radials, etc. All of which ran. Even a home built Turbine. Here are a few examples. Pretty much all of the water cooled variants utilize automotive heater cores for the radiators. Note the Nickel on the pan rail of the 4 bolt SBC. These are the actual molds for the engine above...
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Uh.. I can name at least one attribute the L-28 has over ALL 4 cylinders that don’t spin over 10,000 RPM, (not really a good excuse to keep the 6 for your application. The question was raised and I was able to muster but only one answer..), and that one attribute the L-6 has over the 4 cylinder is the exhaust note. With the right mufflers, (glass packs sound wonderful, no matter how wrong they are), the 6 cylinder has an exhaust note that is oh so sweet. Refined, smooth, with a hint of aggression. 4 cylinders spinning above 10,000 RPM sound oh so sweet as well, but typical street 4's up to 7k, the exhaust note really doesn’t stir the soul as much. BRAAAP…BRAAAAAAAAAAAP…..BRAAAAAAAAaaaaaa……….
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Ah, so you find favor in that uh.. converion.. Touche..
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All pictures taken with Nikon D-70s Columbia River gorge. Bucker Jungmeister Rainbow taken from the front yard, crossing the air strip… Middle daughter Fuzzy, on a bike ride Silver Falls state park... On short final, Runway 7, TTD, Troutdale Oregon, Columbia river gorge entrance/exit in the background Grumman Goose.
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3800lbs? WOW! I thought my '93 N/A car was heavy, less than 1/8th tank, me and my 100 lb daughter, 3600 lbs even on the scales. Do I enderstand correctly that you are running an RB engie in your Z-32?
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I’d start with replacing the fuel filter. Sounds like it is starving of fuel, hence no smoke.
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I finally opened this thread, first one I open is Larry’s Abba, Take chance on me. Brought back lots of memories, Loved that song when it came out, might even still have the LP… Any how, watching that, I was laughing hysterically... Here are a few, (I hope these haven’t been posted before) Boston, More than a feeling.. http://www.youtube.com/watch?v=sHV3DSua3DU Steve Miller Band… http://www.youtube.com/watch?v=1RTUkVRoC4U&mode=related&search=
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Can you tell if this is a turbo 300ZX by this picture?
BRAAP replied to 280zwitha383's topic in Non Tech Board
Yeup. It's N/A, not not a TT. -
I recently got our race car up and running on EFI and promptly parted it out. The car wasn’t filling the role all that money was going towards. In regards to that 240-SX V8 conversion , I was being sarcastic about the owners claims that the car is a do anything car, Road race, autocross, drag, drift, street car, etc. yet instead of keeping it and experiencing all of those do everything attributes, i.e being a super car, why would he want to sell it? I get the impression you may have taken my ENTIRE post wrong. ALL of my comments were 100% in regards to that car and the choices made during its build and the claims of what is and the parts that don’t fit those claims. None of it was aimed at you in any way shape or form. Your, "Is it a hybridz crime" comment came across as aggressive. So you are clear on this, it is NOT a Hybridz crime to post such finds as you posted. My intentions with the question concerning your affiliation with that car was, if that car belongs to a friend of yours and you were just getting it more attention to help him sell it, I was going to keep my comments tame and friendly so as not to upset you and not deter possible buyers with my comments. Please, do keep posting such finds, just don’t take it personal if someone sees a particular project as humorous instead of informational.
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Just built it and now selling? Hmm…. .. But Dude.. that is a SUPER CAR! No really, It says it can do Autocross, Drag, Road race, Drift!!! OMG… It didn’t take long to write a whole list WHY nots for dat dar ride. Sparky, just curious, are you at all affiliated with that?
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Stirs many emotions.. COOL….
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Happy B-day to Mike Kelly and Mike Kz
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OTM vs. Veritech-Z: Loudmouth_Z vs. Camo Zzzap
BRAAP replied to OlderThanMe's topic in Non Tech Board
V/Z crossram ITB stalker... -
V/Z crossram ITB stalker...
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V/Z Crossram ITB stalker...
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What are talking about, I don’t get it.. V/Z crossram ITB stalker
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OTM vs. Veritech-Z: Loudmouth_Z vs. Camo Zzzap
BRAAP replied to OlderThanMe's topic in Non Tech Board
You guys haven’t seen any of Ron’s personal cars have you… (his E-30 M-3 doesn’t count).