zane9000

Thanks very much. Thats kind of what I thought, but I didn't want to go shoving grease where it didn't belong.

So last night my car's rear end clunk got tired of waiting for me to fix it. The inner left half shaft u-joint snapped. So I have my new u-joint here and it has a note saying to make sure it is fully greased. But I pull off the bearing caps and it looks like there is already grease in there. Do I add more? Also, there is a threaded hole in the side and along with the clips is what looks like a little valve. Do I need to do something other than just screw in the valve? What is this for? Do I fill it with extra grease first? Sorry if this has been answered before. I tried searching and couldn't find anything specific about greasing these things. Thanks!

Yeah, I was kind of confused about the purpose and hoped that you folks could shed some light on it. Guess it is just something that is supposed to look cool. I do wish I got to see it in person though.

My friend went to a local car show this week (Hot Rods at the Beach in Santa Cruz)and took a picture of this Z. I have never seen a hood like that, is it something custom or just obscure?

Oh cool. I didn't see it on my first pass through their site, but I found it now. Thanks!

Haha, right you are. Thats what happens when I am half asleep, I forget that L28s aren't the only motors in the world.

For an L28 head (E88)

http://alloutofwine.com/cgi/logview.pl So this is an online log viewer that I am in the process of writing. It is very, very basic at the moment, but I will be working on it whenever I get time. Right now you can only look at one variable plotted against time. Soon I would like to have maybe 4 lines on a plot that you can pan left and right on. After that I will work on getting .vex support so you can see what cells MegaSquirt is using at any given point (for now it just says the time and variable value for a point under the plot). After that I am hoping to have some auto VE correction when comparing to target AFRs. The way it works is you can select a file listed on the bottom left, or upload a new one to the public directory (soon each visitor will have their own directory based on IP or perhaps a username). When you know what file you want, hit "Load", select the variable you want to plot from the lower right box, choose colors if you want, and hit plot. I wrote the graphing library using HTML5/Canvas which means that this is for new browsers only (no IE at all). I am not sure how helpful this will be to anyone since there is plenty of log viewing software out there, but I thought I would share in case anyone can make use of it. Any suggestions would be very welcome. EDIT 2: -OK now you can plot up to 4 different variables on the same plot. EDIT 1: -I took out all of the color options to help remove some clutter. -Now you can look at many plots at the same time. Every time you select a plot variable and push the plot button a new graph will generate at the top of the screen, pushing the old one down. -Moving the mouse around on a graph will make the value of the closest point show up in the lower left hand box. You can also choose a MAP and RPM variable to be displayed. This way you can tell what you engine was doing at a particular point.

The biggest problem is that I have run out of time and money. It seems that megasquirt has done a really good job of making this system work well. Moving the injectors upstream would most definitely help, but that will need to wait. The car is very drivable in this configuration, and I need to focus my efforts on the head and exhaust system for now. I had thought of mounting the injectors on the runners, but because of the intake design and the cost of the injector holders I am using I decided against it. I think the TBI type configuration has potential to work very well once I get everything just right. The supercharger will be upstream of the injectors. I wanted to eliminate the possibility of fuel building up inside of it and having a very expensive explosion.

Just wanted to update this thread. I have done a lot of work tuning the car with the injectors in the pictured location. I have been able to stop the fuel puddling and been able to hit my target afr's under most conditions. The idle is still pretty rough, but it doesn't die and fuel doesn't puddle, so it seems to be in a good spot. I will probably leave the injectors in place for a while. I have bigger fish to fry right now and it runs fine.. well, fine enough. Also, as bjhines pointed out, the fuel distribution is not great. However, I wouldn't say it sucks balls either. Cyl 2 and 5 run the leanest, but as luck would have it, MSA put the O2 bung on cyl 2's runner. I will leave my wideband here as to ensure the leanest cyl has enough fuel under boost.

That is an interesting idea. The more I look at moving the injectors past the throttle plates, the more doubt I have. It looks the If I do that it will make the distribution even worse unless I add a spacer, which I don't really have room for. Before I put this together, I had done a bit of research and found people saying that 45 degree angle was good. That is the angle the injector holders had when I bought them, so I didn't really thing about it. I can definitely see how moving them upstream and angling them more will help atomization. Thanks for the suggestion.

I know, Ill just add a Vortex Valve http://www.vortexvalve.com/catalog/all.shtml . That will help, right? Hahaha

I know, Ill just add a Vortex Valve http://www.vortexvalve.com/catalog/all.shtml . That will help, right? Hahaha

Well I have put about 250 miles on this system and it is far from undrivable. It runs rich, but I can see that each time I drive it, it is a bit better, so I guess autotune is doing its job. The #1 issue I am having with this now is that at idle with the throttle plate closed the fuel is sprayed right onto the plate, condenses, and pools. This makes my idle ridiculously rich and I have not been able to adjust the VE table to fix it. I can still drive it, but I will definitely be relocating the injectors when time/money permits.

Well I have put about 250 miles on this system and it is far from undrivable. It runs rich, but I can see that each time I drive it, it is a bit better, so I guess autotune is doing its job. The #1 issue I am having with this now is that at idle with the throttle plate closed the fuel is sprayed right onto the plate, condenses, and pools. This makes my idle ridiculously rich and I have not been able to adjust the VE table to fix it. I can still drive it, but I will definitely be relocating the injectors when time/money permits.

yep, I realized that after it was all said and done. The initial logic was to put them where the carbs were jetting fuel, but I now understand why this is a bad idea. I will be relocating them past the plates in the near future.... thanks for the tip though. You confirmed what I was thinking.

Alright, here is a picture of what I have done. I want to get the two throttle bodies connected to the supercharger in the bottom left of the picture. Well that is too bad about how the E88 flows. I am hoping once I start running boost that wont be quite as big of an issue, but still... My headers have an O2 bung as well as a smog port. The smog port is plugged and the wideband is installed in the O2 bung. You can see its location in the picture. I was thinking about relocating it to the collector which is just under the firewall.

I know this is an older post, but I thought I would throw in my 2 cents. I have a V3 board and am controlling an electric fan via the FIdle port. It switches a relay without any problems. Also, I am not sure when this happened, but with the firmware updates within the last year or so pin 19 (I think) is now a dedicated sensor ground to help control noise.

Couple of thoughts... Same RPM but low and high kPa will be looking at different cells on your VE table, so it could be lean, or rich for that matter. Do you have a wideband to check this? Also, what is the advance in this area? Did you check with a timing light to make sure that the advance MS thinks it is putting out is correct? Finally, are your acceleration enrichments turned on? If they are, when you step on the gas it will make the mixture more rich than if you just cruising at 3k RPM. Good Luck!

First I want to thank everyone on here. I haven't really posted too much to this forum for a long time, but I would never be where I am today without help I have gotten over the years and the collected knowledge stored here. Anyway, I finally got my car up and running. I just drove it about 30 miles through the mountains to my house. It wasn't great, but it was way better than I thought it would be. I have a very unique set up so I will be posting pictures and asking for lots of advice in the near future. For now I'll give a quick rundown of what I have. I am running an E88 manifold connected to a set of carbs to act as throttle bodies. The carbs are gutted and have a pipe running though them. On top of each pipe I attached injector holders with 1200cc RC Engineering injectors (1200cc at 55psi but I'm running 40 psi which makes them flow 1090cc). These pipes will eventually be plumbed to a Albrex centrifugal supercharger once I am comfortable with an NA tune. At the moment I have a stock 280zx turbo motor, but I will be swapping the head with a ported E88 head that has a large cam installed. I am also running MSA coated headers. The question I have now is about the headers. The O2 sensor is not on the collector, but on one of the runners. Would it be a good idea to have the current O2 sensor hole filled in and a new bung installed down on the collector so I can get my wideband reading for the whole engine, or is just one cylinder better? Thanks again everyone!

Don't tell MS that you have a 280cc engine... It just wont run right... That is all.

In case anyone was curious what I was working on, here is a picture. It is my first prototype of what I will call (for lack of a better term) an electric carb. http://i223.photobucket.com/albums/dd273/zane9000/CIMG0104.jpg

Thanks for all the great info guys. I did everything without oil and with a small bit on a drill. I guess everything was wrong, but I will know for next time!

I know the title of this thread was misleading, to be correct, I bored out the opening of a carb, not an intake manifold. I realized my mistake earlier, I just assumed it didn't make any difference.