The Australian 300zx Owners Association  

Go Back   The Australian 300zx Owners Association > General > Z Re-builds

Z Re-builds Rebuilding your ZX? Post about it here. This is for major rebuild threads only, minor mods and tech questions still go in Z Related Technical

Reply
 
Thread Tools Display Modes
Old 16-07-2016, 08:17 PM   #1421
ZedXTT
#TEAMROB
 
ZedXTT's Avatar
 
Join Date: May 2009
Location: New South Wales
Thanks: 2
Thanked 4 Times in 2 Posts
Quote:
Originally Posted by bRACKET View Post
I'm not your buddy, guy.

Looks great though, obviously.
Not your guy, friend.
__________________
Do it once, do it right
ZedXTT is offline   Reply With Quote
Old 17-07-2016, 04:02 PM   #1422
Pepper
1991 N/A Slicktop
 
Pepper's Avatar
 
Join Date: Jul 2010
Location: Queensland
Thanks: 14
Thanked 17 Times in 15 Posts
Quote:
Originally Posted by ZedXTT View Post
Not your guy, friend.
Not your friend, pal.
__________________

Simlenton,
That godess of yours, that silky midnight blue Z.
Its what I dream of.
Pepper is offline   Reply With Quote
Old 17-07-2016, 08:34 PM   #1423
Anti
14.7 x 14.7 = 44.1
 
Anti's Avatar
 
Join Date: Mar 2010
Location: New South Wales
Thanks: 400
Thanked 414 Times in 326 Posts
__________________

^^ build thread >> garage
Quote:
Originally Posted by Fists View Post
with Anti's build anything goes
Anti is offline   Reply With Quote
Old 02-12-2016, 07:28 PM   #1424
Anti
14.7 x 14.7 = 44.1
 
Anti's Avatar
 
Join Date: Mar 2010
Location: New South Wales
Thanks: 400
Thanked 414 Times in 326 Posts
^^ how timely...

My semester has ended and with it another two months or so of not being able to touch the car. I'm heavily into the next chassis mod but it's not complete just yet - been doing some super fun construction at home and working a lot too. In absence of a real update though I do have some parts that anded recently.

The first was a real steal of a radiator. With all the ****ery that I did to move the rad forward, a custom unit is required. After much research the closest off the shelf component was going to come out of a DC5. I was digging about for a decent one of those until a friend of mine told me about a Z32 race radiator that he was looking to offload. It's a custom made PWR twin pass exactly the width of the Z32 frame rails and only an inch shorter than what I was looking for.



Brought this over from Japan because it is such a good match for the factory gauges, don't know if I'm going to use it yet..



Next up is something significant with a funky story. A few weeks ago here in Sydney was World Time Attack Challenge, an annual race event with competitors shipping in cars from all over the world. Here're some happy snaps with some cool stuff I got up close and personal with:







That last one is Nigel Petrie of Engineered to Slide's S13. Very neat chatting to him and having him talk through some of his projects.

At WTAC Link engine management were holding a booth. A booth with free sun screen and water. A buddy of mine wandered over for the freebies, found out they were running a discount on RB/VG (very similar) plug in ECU's and the long and short of it a massive group buy resulted with something like eight dudes getting hooked up. God bless pale people.

I was initially planning to pick up a wire in ECU since I wanted to knock up my own engine harness, but honestly being such an old engine there wasn't too much more on offer there that I'd actually use. With a plug in I have the advantage of being able to run a stripped down OEM harness from the ECU to the bulk head plug then a custom loom from there. Redesigned where I need it and less work where I don't.





These things install into your OEM ECU housing which in my case was a VeilSide chipped unit because I'm cool like that. The only telltale afterwards is the MAP hose and tuning port sticking out the side.



Last up is something I have actually put a bit of work into and am keen to jump into further over the summer. I mentioned a while back I was converting to a single inlet plenum. This started with mounting up the lower intake plenum from a Nissan Cima, also VG30DE powered but with a factory single turbo configuration. The heads and both upper/lower plenums are different. I'm using Z32 heads (already well into that port project) and am grafting the Cima lower plenum to them because rather than cross flow, the Cima runners are vertical. This means in a centrally mounted manifold there is no harsh transition from trumpet to intake runner.

Fitting up the Cima lower plenum to the Z32 heads is a mixed bag. The bolts line up, but the ports are out of whack. Both motors initially have the same runner diameter, but as the Z32 runs 50cm long ports it transitions down in diameter at a more gradual rate; meaning the Cima runners are wider when lined up up against the Z32 heads.

How to fix this has been a drawn out process. My friends and I concluded with deciding to mill a Z32 lower plenum down to its flanges, cut down the Cima lower the same height and weld the two together. Once that's done I can get inside the flanges and smooth out the internal transition and fit the Cima lower plenum without having to modify my Z32 heads.



Here are the flanges of the Z32 lower plenum that my buddy milled for me. One of them snapped during the process, but they're going to get welded in place anyway so no harm done.



I'm currently trying to figure out the best way to get the Cima plenum machined down. Next up, top side I've gutted the crap out of an ugly Cima upper plenum to extract a base flange.



This created a lot of mess, lol. From here I'm going to 3D model the plenum and call on some hook ups from Uni to CFD test the design so I know it actually works. This shit's pretty much why I'm doing my degree so confirming that I'm not just funneling all the flow into the last two cylinders is important to me.

Here is the base flange sitting on the Cima runners:



A lot of junk to keep working on this summer. Keen to learn how to start modelling. I need a TIG welder.

-A
__________________

^^ build thread >> garage
Quote:
Originally Posted by Fists View Post
with Anti's build anything goes
Anti is offline   Reply With Quote
Old 03-12-2016, 07:13 AM   #1425
syntax_X
Zed Head
 
syntax_X's Avatar
 
Join Date: Nov 2011
Location: New South Wales
Thanks: 61
Thanked 29 Times in 25 Posts
You can change the liner in your mig, get a different bottle of gas and wire which will mig alloy just fine.

But it's more annoying than changing from a cutting disc to a flap wheel if you get me.
Cast alloy is a welders nightmare...
syntax_X is offline   Reply With Quote
Old 03-12-2016, 07:41 AM   #1426
SrAfciGeR
Member
 
Join Date: Jan 2015
Location: New South Wales
Thanks: 0
Thanked 21 Times in 21 Posts
3D modeling is easy just learn basics...
Everything else is depends on creativity and ways of how you think that you could crate desired shape from the block of material and parameters that you can work with. I'm sure that you will like it.

Would Nissan Cima rocket covers fit VG head's?
SrAfciGeR is offline   Reply With Quote
Reply

Lower Navigation
Go Back   The Australian 300zx Owners Association > General > Z Re-builds

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +10. The time now is 04:56 AM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.