madkaw

Thanks for the help guys

If that line was gummy, I would bet that's your issue. This has been discussed here before so there might be some suggestions in the archives

Good point Charles . I have had those float bowl lines collapse on me. I've also seen the rubber lines back by the differential get hot enough to get gummy and collapse

A bad coil is a good example of failing under load. A restricted fuel line will also probably be fine in the driveway , but under load the fuel amount would be insufficient. My daughter's ZX turbo acted up mostly under load and would experience the symptoms you describe . I finally found an obstruction in the fuel sending unit that partially blocked flow. The tank was spotless, but something had lodged itself in the sending unit pipe and would close off fuel. I've also have seen a loose connection on a dizzy act this way.

I'm guessing that a 285 hp motor has a cam thar won't idle at 800rpm with carbs. Bet you will have to go with an idle above 1000 to get it to run right. It seems you are expecting street manners from a race engine. Specs on your cam?

Was the pressure checked when it was running bad?

Charles, found one for 80$-thanks again. I guess I didn't even realize this source was available, but now I know!

WOW- thanks Charles , that's awesome

81-84 2.4 maxima. Thanks Charles

Still in the market for this. Looks like another maxima popped up in Newark CA.

I just went thru a similiar situation, but different trans. It looks like the diff could be a 1/2" longer. For some reason 21.5" sticks in my head. It could also be a worn tailshaft bushing that is allowing the play. Or it's a combination of both.

It seems that the lash pad part of the rocker has more texture ( for lack of better words) then the cam side. Those lines you see can't hardly be felt or grabbed with a finger nail. I think a lot more cam failures are do to operator error than these rockers. Not properly setting them up or properly priming the engine before initial fire up. Throw in there the lack of zinc, proper adjustments, etc...

Just got my rockers back from Rocker Arms USA in CA. The guy I talked said they have been doing these for 30+ years, but just moved their business. I already have a set from Delta, but wanted to compare. Gary, I believe I have the name right, said the rockers wouldn't have a perfectly polished finished. He said the finish inperfections were to help retain oil. Take a look at the pics and judge for yourself.

I'd rather believe the carb maker myself. Plus too many variables - cam, etc...

Replace the coil for sure. Cheap and you get to cross it off the list. When coils act up its usually under loaded conditions.

He doesn't here as far as I know. He has a nice project to share

I guess you checked the sending unit to assure it was clear? As far as ignition, do you have a spare coil to try?

What jets were in the carbs when you got them?

Lot's of guys are looking for the bigger chokes it seems. I'm running the 32's that original came with the mikuni kit. So you don't speak the Mikuni language, just the Weber?- So what help do you need fo jetting? Sounds like you have the pilot jet pretty close and yes it covers a lot of the driving spectrum. I would go with the numbers you came up with. 145 main jet and 190 or 200 main air should be pretty close.

Whens the last time you checked the fuel tank? I mean- is it clean ?

Common metric thread size on the bolts holding in the unit. YES- wash that puppy down. I used foamed back headliner stuff from Joanne Fabrics and glued it down good. Lube up any hinge points. Vent tubes can probably be found cheap enough used to replace bad ones. I have a few extra. AC can be done afterwards

I had a Schneider cam/kit in my car and used zinc additive initially and arbitrary after that with whatever oil was on sale- mostly Castrol gtx. Despite the funky wear on my lash pads the cam lobes looked perfectly polished .

I wondered if it was just me.

They look pretty good. Pretty well centered . So you are worried about them not being perfectly identical in the center?

I need to give a shout out to a new Z friend of mine. You know there isn't a lot of us out there that are passionate about our cars -especially Z's. This past year I found out there was a guy with a 71 just on the other side of town and was doing a full resto. Ever since we have been sharing stories, work and a drink every once in a while. I have a lot to learn and Steve(great name too) has some stuff to share. We are both trying to get our cars done in time to go to Memphis while both of our wives laugh at our efforts:) Steve has the ultimate garage with a lift(I'll make good use of that) and a true passion(like let's start a z salvage yard) for the Z car. He really floored me when he gifted me with this dash from a parts car he recently purchased. His dash in his car is perfect( I mean perfect), and he said he wouldn't need it. He said he would work it off of me helping him out, which is a debt I would be happy to pay, but i'd be there anyway. Anyway, the pressure is on for both us. He's where I was in 2010 when i was getting ready for ZCon. I had an untested car, barely finished and driving many miles for a show. I just need to put an engine together-. Pic of the dash ready to go back in when Steve and i can tackle it.