Muncie Posted February 11, 2020 Author Share Posted February 11, 2020 16 hours ago, HighLUX said: https://www.trademe.co.nz/motors/motorbikes/parts-for-sale/performance/listing-2523460184.htm?rsqid=35d3a4a1921c477882969711be9eec04-002 Looks like it has everything on it to keep a speeduino or microsquirt happy and just run it post turbo into each bank to look extra badass Think i might just buy one of those anyway for a rainy day. 1 Quote Link to comment Share on other sites More sharing options...
SOHC Posted February 11, 2020 Share Posted February 11, 2020 Are you running oil through the turbo bearings? Quote Link to comment Share on other sites More sharing options...
Muncie Posted February 12, 2020 Author Share Posted February 12, 2020 4 hours ago, SOHC said: Are you running oil through the turbo bearings? Yeah mate these twins have full presurised oil systems both are fed under turbo not really visible to well.AN4 feed AN 6 Return, Return might be too small once turbo is spinning in anger time will tell no smoke or oil puddles yet. 2 Quote Link to comment Share on other sites More sharing options...
Muncie Posted February 16, 2020 Author Share Posted February 16, 2020 Better look at these oil lines. I sparked her up with some fuel line and hose tails on pressure side of turbo just to flush the core out, ive had this turbo for bloody ages! I just let the drain dribble on the garage floor to purge any shit out. Now ive got a choice to make both of which require a hole in block there is a perfect oil drain at front of engine but the turbo is now at the back for packaging reasons a line would be to long and flat to run all the way to it i think. This seems like the logical choice but is probably below the sump level will this give me any issues? 1 Quote Link to comment Share on other sites More sharing options...
Muncie Posted February 16, 2020 Author Share Posted February 16, 2020 The second option is running right across engine to other side but the path is pretty much flat..... 1 Quote Link to comment Share on other sites More sharing options...
Muncie Posted February 18, 2020 Author Share Posted February 18, 2020 A few people have asked how im going to fuel this..... An aircraft mechanic at work drew me up a sketch on a paper towel and i think its worth a nudge, essentially my fire extinguisher fuel tank is becoming a "rising rate fuel tank" ive got a -8 fitting on my compressor housing which will pressurize the tank and feed the fuel pump at boost pressure. The fuel pump will then add 1.5 -2psi to it keeping fuel from being blown back up the jet in the carb the float bowl will also need to be pressurized as well to make it work. Going to be Braided speedflow lines everywhere but im going for an Extreme! theme on this thing. I get the speed flow lines and fittings from the bin at work no good for the sky anymore but plenty of life in them for this kind of stuff. 5 Quote Link to comment Share on other sites More sharing options...
flyingbrick Posted February 18, 2020 Share Posted February 18, 2020 I feel really conflicted about how well pressurizing a diaphragm pump will work.. be interesting to see If the two pressures add up to equal what you need. Quote Link to comment Share on other sites More sharing options...
Muncie Posted February 18, 2020 Author Share Posted February 18, 2020 Will either work or it wont cost nothing to try it fortunately. This or i need a rather expensive pump to make it work or a mess of check valves and a big float chamber. Quote Link to comment Share on other sites More sharing options...
tortron Posted February 18, 2020 Share Posted February 18, 2020 Occasionally see used malpassi siding rate pressure regulators for carbs come up on TradeMe for not much. They are about 200ish to buy new. Maybe cheaper on ebay Quote Link to comment Share on other sites More sharing options...
cletus Posted February 18, 2020 Share Posted February 18, 2020 I remember reading something about back in the 70s when turbo kits were a new popular thing, adding boost pressure to a stock fuel pump on one side of the diaphragm to equalize pressure Have you considered a suck through setup instead Quote Link to comment Share on other sites More sharing options...
Muncie Posted February 19, 2020 Author Share Posted February 19, 2020 8 hours ago, cletus said: I remember reading something about back in the 70s when turbo kits were a new popular thing, adding boost pressure to a stock fuel pump on one side of the diaphragm to equalize pressure Have you considered a suck through setup instead mainly going blow through in case the turbo sucks i can just revert to naturally aspirated easily. Also dont want to have a hot pipe loaded with air and fuel just under my nads in case of a back fire. Quote Link to comment Share on other sites More sharing options...
Kimjon Posted February 27, 2020 Share Posted February 27, 2020 @Muncie have you seen this kids channel on YouTube. He makes cool stuff, especially given his age. Think your motor is the same or similar? Quote Link to comment Share on other sites More sharing options...
Muncie Posted February 27, 2020 Author Share Posted February 27, 2020 Thats a Chinese knock off of the gx630 i think heaps of go fast parts available out of states engine is a Predator 670. They stick them in bloody Harley's! Quote Link to comment Share on other sites More sharing options...
Muncie Posted February 29, 2020 Author Share Posted February 29, 2020 Spent about an hour on this this morning. Oil pressure feed, done. Oil drain decided need to borrow a 1/4 tap to finish. Started cold side pipe to carby and played with pressurized fuel tank fittings. 2 Quote Link to comment Share on other sites More sharing options...
Muncie Posted February 29, 2020 Author Share Posted February 29, 2020 Think this will end up just in front of right rear wheel. Theres a nice empty spot there that needs filling. 1 Quote Link to comment Share on other sites More sharing options...
Muncie Posted March 1, 2020 Author Share Posted March 1, 2020 Decided to throw away almost all of the frame around engine and remake it in box section instead. Its like the frame was built by a blind furniture maker on a Friday nothing's square the welds are shit but the suspension and brackets are excellent! So I'll rescue the brackets and suspension and start again. Its a very basic shape so will take bugger all to fabricate and be nice and sturdy, when this engines doing its thing in anger it'll have as much power as a small car so i better not risk it ripping in half. 5 Quote Link to comment Share on other sites More sharing options...
Muncie Posted March 25, 2020 Author Share Posted March 25, 2020 1 down 1 to go! flipped the hub so more offset and redrilled for go kart bolt pattern. Still looks pretty good if anything looks more mental than before. Will run some go kart wide rears eventually but will stick with quad rims till its been running a while. 3 Quote Link to comment Share on other sites More sharing options...
Muncie Posted March 25, 2020 Author Share Posted March 25, 2020 Bigs and littles. Looks a little extra stretched im experimenting with engine placement to get exhaust tucked in further. 3 Quote Link to comment Share on other sites More sharing options...
Muncie Posted March 25, 2020 Author Share Posted March 25, 2020 Lots of room around non moving parts now the original wheels had chewed massive chunks out of sidewall of tyres from rubbing on bolt heads etc. 3 Quote Link to comment Share on other sites More sharing options...
Kimjon Posted March 26, 2020 Share Posted March 26, 2020 Looks like a harley with that amount of offset. Quote Link to comment Share on other sites More sharing options...
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