Diseazd

Thanks I'll check the PCV, but it seems to be coming from the top and front.

Thanks Casey, but I disconnected the fan belt and still had the noise......that eliminates the fan. I'm going to check the cam sprocket bolt to make sure if it didn't bottom out before locking in the fuel pump eccentric cam......just thought about that as a possibility. Something is making the noise and that's a potential noise source. I'll let you know if that's it. Guy

I had already checked that......the thermostat bolt was not the problem. I pulled the front cover and put in another new tensioner and readjusted the chain......not the problem. It's the damnest thing I've ever dealt with ........the noise comes on at 1400 rpm and disappears at 3,000 rpm. There was no sign of wear or stress anywhere. The cam and rockers are perfect. The only other rotating items I haven't eliminated is the cam and the distributor drive shaft. Ron Isky said he had never heard of a harmonic problem with the L-series stage III cams. The engine runs perfect......I'm baffled!!! Guy

That's what I needed to know.......Thanks Guy

Anyone know offhand what ratio was in the R200 diff in the 83 280ZX non turbo?

BLAKT OUT......I think you made a great decision....can't wait to hear the results. Also, I like your idea of building the original engine and having it on an engine stand ready to bring it back to original. I did the same thing.....3 times. Your project is a joy to watch.....best of luck with the final product! Guy

:finger::bunny:I think this could be added to HLS30's list of "What is rude?", but it is pretty damned funny!

Where does the hoes go? To the "hoes house"!

SKYBLUE.......Yes the lime Z has G/C coilovers. Guy

ROFLThe $5.00 is so I don't get mugged carrying $180.00 into a 711 to buy a money order!

Dave....I'll take 3 more....I'm sending a check, so if I add $5.00 to my order would that be 3x$60.00=$180.00 plus $5.00=$185.00? Thanks Guy

Very reasonable.

I agree ......when it's clean, it's beautiful.

Here's an old picture of my first Z. I'd never paint another one black! Black shows imperfections and is hard to keep clean.

Dave.....The mounts look outstanding. Everything you do is to perfection! Thanks Guy

Here's the new addition to my 2nd garage.....the one that Jeff was kind enough to part with.

I'll take 3......Guy

Take it off.....It'll give you more H.P. just by dumping the drag created by the smog pump. Also it allows you to put 17 degrees of advance! It's a cleaner look.....Get rid of the extras on the balance tube....Bruce at Z Therapy will take care of that! All IMO.

I traded mine for a can of fishing worms!

You're absolutely right....I'll put that on my list of possibilties.

Nigel....I asked Z Doc about possible low oil to tensioner. He said no since the chain is oiled by the pinhole in the tensioner that sprays the chain. He said if there was no pressure, the chain wouldn't get oil and the guides and chain would self destruct. He also said and I quote "no oil in the tensioner would result in loud knocking of the tensioner foot like on an old tired Z engine when bumping the starter to set the valves_____knock knock."

Mark.....Remove the smog pump.....plug inlet to air cleaner where smog hose was attached...remove air injection tubes from exhaust manifold.....plug holes. then get Z Therapy to build your balance tube free of garbage and reset timing to 17 degrees BTDC. Guy

Nigel....I am leaning toward chain noise, but have you ever in your life heard of low feed to the chain tensioner? And regarding adjustment of chain guides.......what would cause noise on the slack side. There are basically two adjustment holes, and with a new chain etc. I have always opted for the right hand (bottom hole) adjustment. The chain is tight as can be. Also when I disassembled it, there was no signs of wear on the guides or tensioner boot. Guy

Chris.......I'll get Brandon to do a video this weekend. Andy....none of the above....nothing rubbing and I've run it on the bowls w/o a fuel pump.

It's a brand new Nissan tensioner......and I've completely removed the fuel pump...taped up the hole and ran it off of the bowls. The noise was still there!