Interesting project, I never thought about the undertray's impact on overall airflow and influence on cooling. I have the Z-Speed which is similar to the Z1 design, my plastic tray met an untimely demise one night in section of poorly lit and unmarked road construction. Thankfully it did its job and its sacrifice saved all that lives above it. Im interested to see how you continue to improve upon this project, especially as it pertains to overall cooling and airflow.

 

This was my biggest misconception, I have built a few cars now and when I tell you I will push for an under tray on anything I own or work on I'm not kidding.

The interest came after checking out a 2019 GTR at my buddies lift, then the research took over.

Anyone that has gone that speed can tell you of how eerie seeing a hood flex can be, but why is this happening?

I had a mentality that focused more on temps by in city driving that i just couldnt possibly believe that enclosing the engine compartment would work but the reality is that you can enclose properly adding reliefs that help in all departments.

 

What I'll need now is peer review. I'll need to compare with other 7AT with shields and coolers to compare.
Yesterday 100 deg weather 1 of traffic the trans temp ended in 197degs.
Intake temps staying at 10 over ambient
Coolant at 100 over ambient

Possibly taking the car on a 3 hour ride so i'll find out what trans temps end up in.

 

I bought a brand new Maxima back in 2003, and at highway speeds the hood would flex. It was inconsistent, but super noticeable when it happened, and very unnerving. After researching the problem, turns out there was a really simple fix, a TSB from Nissan no less. Just add weatherstripping over the headlight lenses, between the headlights and the hood. The problem was immediately solved.

 

Most cars after that started incorporating a hood styled like the G. Separating the hood completely from meeting the headlights.

 

Here's the final result of the version 2 shield. It survived it's first Florida monsoon yesterday. Flex seal is some ****.
I believe even once I go to a metal shield it will still get coated with this stuff. Just like under liner but with a smooth glossy finish.

 

I'm so glad I found this thread 1 Year+ into the making. It's like finding an awesome show and not having to wait for new episodes- can just binge watch

 

Thank you for the kind words. Modifications have always been limited for me. Has to be a green light from a budget, justifiable, least amount of loss as possible points of view.
Always with comfort in mind,

Even with all of what I've done to it I now have to address some of the older suspension components and possibly brakes. Exhaust is something I would like to do at one point but finding the right test pipes that are affordable can be difficult and unjustifiable for me. I'm fine with the OE cats that are on their way out, just need to find the quietest pipes to finally ditch them.

 

Those will small children, what do you do for car seats? The sedan rear seat does suck for these. I ended up using a 2x4 on my youngest seat to level it since the seat has a weird angle that makes car seats sink towards the back

 

Having only dealt with the carrier and click-in base, I haven't had to deal with the sloping seats yet because the base for the carrier has an adjustment that allows a bumper to come out more/go in depending on the seat and a nice bubble level so you know where it needs to be for each vehicle.

 

That's a common problem with back-less booster seats. Go buy a full sized booster, which isn't a child seat per se, but it kind of looks like one. A child seat is meant for toddlers with a 5-point harness. A booster is more of a self-service thing that your preschooler can climb into themselves.

 

We had bought the multi transformer 1001th way adjustable car seats that for the most part have done the job. I know exactly what you're talking about.
My oldest will be getting one soon, my youngest will need a bit more time. This has been the smallest car I've tried to fit both my kids in.

 

I suspect every single parent sees the "can be used as a booster seat" claim and runs with it. I mean, we did, and it wasn't a problem for the cars we owned when our kids were little. But the G's rear seat backrest really slopes back, so I can easily see this being a problem with the G.

 

I scored some Q50 3.7 boxes. yesterday. One was missing the front cover so I couldnt pass up on $30. After initial fitment yesterday these will probably need a custom front half or adapt the factory front to the 3.8 in tubes I made. The idea is to build something like the galvanized drain I posted. Who knows. I've got a big wiring project I'll be starting soon so I doubt I'll be touching these any time soon.

Here's the proposed idea. This connected to the 3.8 in tube going to the front. This piece will of course be fitted and insulated.

Untouched Q50 box for comparison

Both boxes for comparison

The taper of the Q50 box

I'll probably build a box to adapt to the back part of the Q50 boxes

I'll probably build a box to adapt to the back part of the Q50 boxes

 

Or maybe something like this https://www.woodworkingshop.com/product/bh11118/