olie05

In my opinion, S30.world provided enough information on their website and in their videos to get me off the sidelines and ask them directly for more information. This is not a crowdsourced community project. The reality is that there is engineering time invested into the design and manufacturing of the kit parts and the people behind it can decide how much of their IP to share publicly. If you can only work with information from their site for your planning and can't message them directly for some reason, then you can do like I was originally going to do and plan the conversion yourself from start to finish. (Believe it or not, the S15 transmission onto L-Series conversion has been documented online well before Escort or S30.world kits became available) Another note: the amount of information that s30.world has provided in their videos and on their website more than makes up for any information they are choosing to keep private while they continue the development of their transmission conversion kit.

@Zed Head I have a lot of emails back and forth with S30.world on this topic. Basically I bought the RRS50 transmission back in June 2025 and was planning on converting it myself for use with the L-series engine. When S30.world came out with their kit I asked about getting just the bellhousing, which they were able to accommodate. Like Alan said, I recommend asking S30.world directly for further information. They were very helpful and even sent over the installation documentation. From what I see in the documentation, the mounting is via a cantilevered bolt behind the stock transmission mount ears (later style mount), and where the old mount goes on the chassis side you place some provided spacers. They also offer an optional CNC mount that is offset to fit the location of the transmission mount on the transmission side. The flywheel, clutch assembly, throw-out bearing, fork, and pivot seem like they come from the L-series, but require some measuring and fitting to make sure there are no parts interfering. This may be specific to my case where I am fitting the bellhousing to the transmission myself. If you purchase the complete kit this may be done for you, again, worth reaching out to iron out those details with S30.world. There is also some mention about prop shaft compatibility in the document, I'm sure S30.world can advise on the correct prop-shaft configuration for your specific application. As a side-note I did reach out to Escort when I first purchased the transmission but they would not sell me just the bellhousing. Good luck!

Can you post up the patent numbers for what you found? I'd like to see the ones for the side vents and rocker arms.

A few years ago I came across the s30 design patents through a very rigorous (and crude) search through old nissan patents filed with the US. I remember saving the image on my old hard drive of a simple white and black "line art" Z. That hard drive is long gone, and I want to have those images again. I tried searching through google patents and the closest thing I came across was this patent for a hood that looks like it might fit a Z: Hood Patent Does anyone know the patent number for the s30 design patent by nissan?

Yeah I was expecting to see an hks surge tank and two turbos when he popped the hood.

thanks for sharing those pics! Its rare that we can track the progress of a car over that many years. I wish someone had pictures of my car from the 80's.

Absolutely amazing. I am very curious to hear the history of this vehicle. I just had to make the treck over from hybridz to see your new arrival. "...It is not a priority at the moment as my 'new' car has just arrived from Japan." I pay too much attention to the details. Keep the pictures comming!

:eek: get a 5-speed! . cruising at 80mph with a 3.54 diff and 81 5-speed I'm at just under 3000rpm. Avg. MPG on a LONG road trip: close to 28mpg.

I was in the same boat until I fixed my exhaust fumes as well. I could only stand to drive my car for short (<30min) drives. now that i fixed them i can stand to go on 16hr drives ... see above.

Looks like somone glued on a "datsun" logo over the nissan part of nissan ohc.

any updates Alan? I'd love to hear what you wrote in your notes.

heres a visual: Maybe later i'll take a pic of the one I made for reference. Edit: I added the picture of mine. I notice mine is alot shorter than most people's... I actually had no problem with mine, or getting it out of the chain when I was done.

I actually want both, but if i had to choose it would definitely be "to be fast" No point in modifying something on the engine for LESS performance! after looking at the stahl headers, I think that might be the route to go, although I might just have to make a set of "spaghetti" headers, and test the difference in power on a dyno. edit: sorry Alan, I was hoping you would chime in on this thread, but i should have asked you first. can you please provide your info on the picture you took? thanks, Oliver

Thanks for replying, Ron carter. My main question is how much of an increase in performance is this header design over the standard header design? For comparison reasons, i'd say compared to an equal length header that immediately goes straight down after the ports instead of curving out? These few pictures are the only ones i've seen with these types of headers, and I'd like to know if you can liken the performance gains to that of a "long tube" style header. If you look at the original post i made when I started this thread, I specified that the header i was looking at was a "custom one" I did not say i was on any kind of budget for this header when I do get around to building my next zcar, and I didn't say that I was going to source "a regular exhaust shop" to fab the header up for me. but thanks for the observations.

found this header pic. http://www.classiczcars.com/photopost/showphoto.php?photo=11138&cat=500&ppuser=932 i'm still very impressed by these style headers. I need more info!!!!