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About MantisX620

  • Rank
    Senior Member
  • Birthday 12/19/1982

Profile Information

  • Gender
  • Location
    North Carolina
  • Cars
    1977 Six Twenty Turbo, 93 Integra Turbo
  • Interests
    Datsuns and Hondas

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  1. MantisX620

    Blow through turbo stuff. R1 carbs

    Time Left: 3 days and 21 hours

    • FOR SALE
    • USED

    Hi all, I have my stuff leftover from my blow through R1 setup that im looking to unload since I upgraded to fuel injection. All items are used but in good condition. I already sold the LD20T manifold. I can ship in USA only via USPS. I can ship out as soon as paypal hits! Thanks. Boggs Brothers Manifold for Yamaha R1 Carburetors. It has been modified by adding 3 vacuum ports to 3 runners. I did this to get a vacuum signal for things. Fits L series SOLD!!! Aeromotive Fuel Pressure regulator. Has a boost sense so it increased fuel pressure 1:1 with turbo. $70 shipped R1 Carbs from a 2001 Yamaha. Can also include a set of jets I purchased for blowthrough. Will also come with stock jets. SOLD!!! Turbo R1 Intake box made by me. I pressure tested it to 30lbs with no leaks. Made to fit R1 carbs for blowthrough. 30 shipped. Thanks MantisX


  2. MantisX620

    Heres my 77 620 longbed

    Thanks. I used redeyes mounts. It's a tight fit, but they put the engine pretty much where it needs to be. It's a tedious swap, but in my opinion, not overly difficult. If I can do it, anyone can! MantisX
  3. MantisX620

    Heres my 77 620 longbed

    So the unpredictable nature of a blowthrough carb setup was very fun. But I wanted a little more stability in my mini truckin life. I went ahead and put a SR20det in. Its dead reliable and it starting on the first try is the highlight for me lol. With that said, im pretty sure the turbo carb setup I cobbled together was faster haha. Im already dreaming of ways to get more out of this thing. https://i.imgur.com/pXoNz6k.mp4
  4. MantisX620

    Important Information About Tapered Inserts

    Got an old school machinist to help me out. 11/16" exactly! Now to move on to other parts of the project finally!
  5. MantisX620

    Important Information About Tapered Inserts

    Well the guy that made the samurai swords on the side must've forged my steering arms because I cant drill them and one machine shop has said they cant do it. Im taking them to another machine shop but I had no idea that this would be the hardest thing about this swap! I even got a cobalt drill bit and it did better but ultimately gave out!
  6. MantisX620

    Important Information About Tapered Inserts

    Well you sir are a trooper. I couldn’t get my bits to cut it. I even tried slowly increasing bit sizes. So I took the arms off the truck and to a drill press. Same result. So I’ll be taking the arms to a machine shop to do it. What kind of drill bit did you use? MantisX
  7. MantisX620

    Important Information About Tapered Inserts

    Did you remove your arms and drill press them or did do them with a hand held drill? Thanks MantisX
  8. MantisX620

    620 SR20 Motor Mounts

    The passenger side mount gave me the most grief lining up. So I removed the driver side rubber mount to get better position on the passenger side. Once I got the passenger mount to fall in, I lifted the engine just enough to get the driver side rubber bolted up and sat it down. I havent gotten around to putting the trans on yet as im waiting for a clutch. I may end up having to drop the engine to get the trans on, but my eyeball measurement says the trans should go on without having to move the engine. MantisX
  9. MantisX620

    620 SR20 Motor Mounts

    Here are some pictures so that others can see how these mounts place the SR20det. Im very happy with the fitment. I had a mini stroke getting it in there but I have that issue with every engine I put in/take out. Also, visual proof that the aluminum engine is alot lighter. Ill need to lower the front end again lol. The only clearance issues ive run into so far is the wastegate and the alternator. A slight shift in the wastegate mount should clear it easy. I am going to try a few things to try to get the stock alt to work, but if not I will go the Justy route. Thanks Redeye for a great product! MantisX
  10. MantisX620

    How to wire a KA, CA, SR, and VG into anything

    Thanks Hainz. Sorry, I meant the lone black ground wire thats above the starter solenoid wire in the diagram. Is this meaning ground in general, or is there a specific ground wire out of the harness that I need to ground? Thanks MantisX
  11. MantisX620

    How to wire a KA, CA, SR, and VG into anything

    Ok, Ive located all of the wires in the diagram except ground. Am I looking for a black wire coming directly off of the ECU connector, or is it a black wire in the same set as the other 8 wires? Thanks MantisX
  12. MantisX620

    How to wire a KA, CA, SR, and VG into anything

    I think I figured it out? If 86 is power for the relay coil and 85 is ground for the coil, then there cant be a hot connection straight through them.
  13. MantisX620

    How to wire a KA, CA, SR, and VG into anything

    I have the same question here. Is the solid line through relay 3 a mistake? Thanks MantisX
  14. MantisX620

    SR20DET for 620 vs 510

    With a T25 turbo, lightly grazing the gas pedal should build 45psi in 1st gear. I feel your pain Jalj47, I gave up on finding a KA where I live as well. SR20 it is! MantisX
  15. MantisX620

    R1 Carbs (lots of pics)

    I see what you guys mean. But, should'nt the carbs only go lean if im decelerating in gear? In my example above, I was decelerating out of gear which means the engine should idle as it would if im sitting still right? MantisX

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