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About Jeff9727

  • Rank
    Moving Up
  • Birthday 12/11/1984

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  • Gender
  • Location
    Sulphur, LA
  • Interests
    Drawing, 3D CAD Design, Laser Scanning, House plans, SCCA racing (I want to do this eventually...wife worried...I have 4 kids), car shows, legos with kids, home improvement

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  1. Jeff9727

    1975 280Z RB25DET-S2 Project Car

    Honestly, I've cooled my head. Found someone who I can throw money at to finish her up.
  2. Hey to all, I am testing the waters to see what my project's worth as is. I do not have the time to complete this project on my own. I'm willing to throw money at it to finish, but don't know where to take it. I live in Southwest Louisiana in case you're wondering. Refreshed engine - New gaskets, ARP bolts, OEM head gasket Sanded, primed, and bedlined engine bay and cleared with metal flake Borg-Warner 7670D Twin Scroll 1.05A/R About the car: Bought the car in New Mexico. Surface rust beneath the fenders but can be sanded out. No rust on floor boards up front. Surface rust near the back of the seat mounts but nothing serious. I the frame rails need to be repaired as there is rust damage there. No rust around drip rails, or in spare boot. No rust on or around hatch. Illumina adjustable springs and eibach springs bought for front and back. Only back has been installed, along with poly bushings. Carbon Fiber rear spolier and front splitter 5-speed manual that came with the engine Bought but not installed: New weather strip kit for whole car Eibach lowering springs (front) and tokico illumina adjustable (front) Poly bushings for front suspension I have a spare R-200 that comes along with it, but it's not worth much as I thought it was an LSD, which it isn't.
  3. Would you ever consider selling your rocker arm suspension design as a blueprint for me to fabricate for my car?



  4. Jeff9727

    70-78 Z Car Shell Wanted

    Looking for a shell. Only real requirement would be light to no rust. Planning to come back with a tubular frame, so the exterior is important. Preferably no rust on drip rails or rear hatch area. No rear hatch needed. Doors would be nice to have but not necessary. Like I said, looking for something to build a frame in. Preferably less than $1000. Preferably within 12 hours of Louisiana. Would consider arranging freight if shell is cheap enough. Thanks! Jeff
  5. Jeff9727

    Solid 260z rolling shell, perfect v8 car

    Still for sale?
  6. FYI, I did a test fit because I was worried about the steering column. As it turns out, I'm clearing it just fine but I'm getting close to the engine mounts (Whitehead performance). I had a small set back (unexpected expenses) and will not be able to have these fabricated for another month. But I will keep everyone posted as progress is made. Jeff
  7. However, I do like the slip joints
  8. I could understand using these in certain situations where the material isn't rated for such high temperature intermittent duty cycles (cast high carbon steels). Is the purpose to reduce fatigue on the welds due to thermal growth? If so, I lean towards the bellows being on the down pipe, some flex piece on the turbo air outlet flange, and reducing vibration on the engine itself through dampening. Thoughts?
  9. Would you please give me a link to a typical arrangement?
  10. Yeah, I will have to see how the shaft comes into play. I really hope I'm onto something here! Anyway, here's some progress. Still have parts coming in. I went ahead and decided on a different flange (pictured separately) so the transition to pipe will be smooth. Plus, it's only $65.
  11. Couldn't resist. Here's the waste gate concept. True twin scroll, 1 waste gate. I'm posting these pics to see if there would be any interest for the actual parts involved in making the waste gate connection. Testing the waters. Also, what do you guys think of the concept? Thanks for your input so far and it's been a fun ride!
  12. Thanks for the comment! To all, I have revised the design...again. But, I've ordered the parts and I've committed to the design. Attached is a picture of the final revision. You will notice that I have left the waste gate connections off. That my friends, is proprietary. Just know that it will be a true twin scroll design and I definitely will be posting a picture of the wastegate kit I intend to manufacture for selling purposes. The design has again been through a flow check only to make sure the short radius ells do not cause excessive back pressure. They don't. I don't have a stress model yet, but my mechanical engineer says that I should not gusset anything because I could possibly crack welds. He will perform a thermal growth analysis when he has time. Also different from the attached plan, I went with a different and more simple style of collector. I am using a 3" weld cap with a flat plate welded to it. Hard to explain but there is one little detail showing it on the plan. If you plan on fabricating this, please note that the final height of the turbo flange can change. I will probably leave this piece for last and do a "field cut". What are your thoughts? Pics to come. It might be another couple of weeks before my next post, BUT WE HAVE PROGRESS!
  13. So...I got this quote today...LOL! And that's the minimum length of pipe I can purchase with them.
  14. A little progress report: I took @HuD 91gt's advice and centered up the manifold. All pipe lengths are equal as of now. The connection for the wastegates are 45 degree branches off the collecter with 90D ells welded to those. I will be 3D scanning the borg warner tonight so I can create an autocad model of it. If anyone wants a Borg-Warner EFR 7670D autocad model, message me. I am interested in a specific manifold design done by CRG Turbo Manifolds out of Australia. Here's a link and let me know what y'all think:
  15. Awesome vid @seattlejester ! Inspired me to do this. See images. So far...: 1: 19.75" 2: 19.75" 3: 19.375" 4: 21.75" 5: 21.625" 6: 21.5" I will probably need to repipe all of it and especially runner 2 as this thing will put the turbo itself up wayyy to high. Will hit it again monday. I will have the engine in hopefully tomorrow and check clearances. I will also do a symmetric design including "prioritizing the wastegate" to show @HuD 91gt