rags

NJ, over seas for a year and now in Maryland. We tried to hookup for a beer while he was in NJ but it never happened. I He's still checks in every now and then, most recently was 2 weeks ago.

Dave, Have you pulled the downpipe on the turbo? Pulling it and looking into the turbo with a flashlight is good insurance to prove the turbo isn't leaking oil on the exhaust side. I checked everything before looking at the turbo, going so far as changing valve guides before finding oil in the turbo. Expensive lesson learned. Joe

Thanks anyway but it doesn't matter. The 75-76 float is NLA.

Have you check the plugs for signs of coolant getting into the combustion chamber? Joe

I have a 75 tank in my 71 and the sending unit went south. I can't remember which sending unit I used when I changed the tank. Does anyone know which sending unit I should be ordering, the 71 or the 75? Thanks. Joe

Woohoo! After much trouble with sellers on the web who take payment but don't ship product, I finally received a new fuel pump in the mail yesterday. I just couldn't bring myself to spend $350 on another Aeromotive pump so I went with a Walbro. All I can say is I should have listened to all of you a long time ago. This pump just plain works! Without making any other changes except for the pump replacement the car is running 100% better. What I was attributing to a poor tune was not the tune at all but a bad pump. Embarrassed? To say the least! I spent all of 20 minutes last night fine tuning IOT and TOG setting and I'm amazed at the way the car responded. Now I can't wait to get back to the dyno! Joe

Does anyone know where the car ended up?

Looks good. What all needs to be finished? It looks like it's sitting on all 4's. Joe

What he ^ said

I don't have it in front of me but I do remember the JTR book showing the tach signal changing from an inductive source to the negative coil terminal. I thought it was done in 73 but I'm not 100% sure.Someone will have to chek the book for you. Joe

Well I took the car the 55 miles to Bob Ida's place to have it tuned. What an experience the drive down was. Rush hour traffic, bumper to bumper for almost 2 hours on a poorly tuned car is NO fun. And after $450 the car is still NOT tuned! But I did find out why I was having so much trouble tuning and it wasn't only because of the bad TPS. We did change the TPS and get the car strapped to the dyno only to see the car go full lean (>17-1?) by 4k at 10 lbs of boost! A look at the the data shows fuel pressure steadily dropped off. We initially thought it was a FPR issue because I'm using an Aeromotive A1000 pump with 3/8" feed line. Plenty big enough. After I got it home and spent some time on the phone with Aeromotive it was determined the pump wasn't putting out what it was supposed to be putting out. I opened the pump and found a broken o-ring between the pump and pump housing. Aeormotive wanted $210 to rebuild it so I ordered a new 225lph Walbro. I hope that one is big enough. So how did it do on my crappy tune before it got shut down? 210rwhp and 302rwtq. I actually think that's promissing considering there was no fuel, only 10 lbs of boost, and the run was stopped at 4K. What do you think guys? I should have done this 2 years ago! Joe

Dave, What throttle body spacer are you using that allows you to hook up the idle air controller? My cheap spacer doesn't have a provisions for one and neither does my throttle body. Joe

Well I just got home and had to check the "new" 240sx TPS. It has been confirmed it's screwed. I opened it up to see what's going on. It seems as soon as the 3 position portion of the TPS goes to WOT, the pigtail portion drops to 0 volts. The sweep before WOT seems to work correctly. I am just going to use the one with the dead spots to get the car down to Ida's. I told them the TPS is NG and we will change it with the same type proir to tuning. I really like how the 240sx TPS looks and will still look into changing it. Thanks for all the suggestions guys. I really appreciate it. Joe

Joel, When you used the Q TPS did you also have to use the pigtail connection? It looks like it from your pictures but I want to make sure. Joe Uh oh, now I see one that looks like your using the connector that is on the TPS itself.

Hi Joel, I actually have a backing plate from an old 280Z TPS bolted to the back of this TPS so I can use the slots on it for adjustment. Also, I might not have explained myself correctly. The original TPS did work correctly at one time. I just noticed the dead spots in it after I was having trouble tuning. I bought the 240sx TPS and have had nothing but trouble with it. That's the reason for ordering a new TPS from E-motive and sending the car to Ida's for the tuning. Pete, Yes, I have checked the polarity. I get an infinite reading at idle until 1/4 throttle between ground and tps signal connections, but I will check again tonight when I get home. Tim, That is how the original worked with the exception of a few places where it would drop down to 0. The new one is 0 volts for 1/4 of the rotation before going linear to 3.2v and then WOT back to 0v again. Joe

Thanks for the reply Tim. The throttle body is from (I think) a 240SX. I have 3 pins in each connector and I used an Ohm meter to determine which connector to use. Of course, the one I needed to use was not the same connector type as I was using on the original. The potentiometer was on the pigtail and the connector on the body of the TPS worked like an old 280Z TPS with 3 positions. This is the original. The voltage change is linear but still doesn't look right. At closed throttle I have no voltage so the software will always show the failed sensor low value, what ever I set it at. Also, it seems the TPS doesn't "turn on until about 1/4 throttle which is way past the adjustability of the TPS. Once it reaches the point of turning on the voltage change is linear up to 3.2 volts. My patients has worn thin and I've thrown in the towel. This Thursday the car goes to Bob Ida for a new TPS and a dyno tune. If I can afford to keep by broadband after that bill I'll let everyone know how I made out. Joe

Wow, didn't see that coming. I'm sure the next drivetrain combo will look just as impressive as the L6. If it all doesn't go as a package I'll throw some cash at the trans I/C setup and meth setup. You can never have too many spares. Let me know. Joe

Guy's, I've been having trouble tuning for a while now and yesterday I found my TPS wasn't working correctly with dead spots throughout the sweep. Well today I picked up a 240SX TPS (wrong one, 2 connectors) and after playing with it to figure out which connector was the pot connector, I get it hooked up again. Now my problem is WOT voltage which I think is way too low. I have 4.91 volts at the 5 volt pin but can only muster 2.3 volts at WOT. And yes I am making sure the TPS is turned al the way. Shouldn't I be seeing 4.91 volts? Is this TPS bad or am I missing something? As always, any help is greatly appreciated. Joe

I'd pull the fuel rail and make sure they are firing. Has the car ever run with the SR20? Welcome to the list! Joe

Were you able to fit a Taurus fan in front of an L6? I bought one and returned it because it wouldn't clear the water pump. Joe

A little off topic, but what TPS are you guy's using? Is the one from a 240sx a potentiometer type? Joe Found it guys. Thanks.

Is there anyone near Burlington that could pick this up for me? It would take a little while for me to drive down there. I sent the seller an email to see if he could hold it for me until I come down. We'll see. If anyone has been to the conventions in Syracuse, NH, or York, or Thousand Lakes Canada, yes, the boat trailer could be decomissioned! Joe

No comments? Come on Jon, BJ, Rick. What do you think? Joe

Alan (it is Alan isn't it?), Do you have a Nissan G nose on the car in your avatar? I'm curious as to how the fit is on the underside of the G nose. Does the lower panel reach/mounted to the bottom of the radiator support? Also, are the hood hinges outside or inside the vertical pieces and if they are outside, are the torsion bars for the hood support removed? This looks like there was a lot of research done for this piece that gets lost in the aftermarket G noses. Joe

You didn't say whether the car also gets hot while driving. If so, and this is a new problem I'd change the water temp sending unit. You could be chasing a problem that doesn't exist. Joe