Can a 240 or 280Z front timing cover work on a 74 260Z?

Yes.....

Look carefully at the water pump cavity on the one your swapping in. Make sure there is no sign of wear, scraping damage or a rough pitted surface on the turbine water flow surfaces. Pump efficiency is determined by fit and close clearances in this area. Examine it closely.

I and others have chased cooling problems that were finally resolved by replacing the front cover. Not the first place people check, its even hard to see when you the pump off. Search here and hybridz for "cavitation" to learn more.

Edited May 31, 201213 yr by zKars

How about a 510 or 210 front cover or better yet anyone have a cover top sell I have JB welded this one and have my doubts?

510 good, 210 not the same.

where i'm at there is no chance of finding a cover and e bay also drew a blank

zcarsource in Phoenix is pretty close. They are a sponser here (banner at the top will flip to them every few refreshes).

zspecialties.com in Washington state.

The member BURLEIGH here has lots of parts for sale. Send him a PM.

There are a couple of members here from Vegas. Do a bit of searching

Put an WTB ad in the classifieds

Worst comes to worse if yours is just cracked get it welded.

Worst comes to worse comes to worse I can send you one or send me yours I'll fix it, even if a corner is broken out of it.

Edited June 1, 201213 yr by zKars

I believe there are two Z clubs in the phoenix area. Try asking on those forums. One is desertZassociation.com. I can't remember the other one.

lower right lip broke off and so did lower lip on distributer flange. I used a flat washer and rubber o ring andit worked and the other is JB welded it broke off cleanly. i was having issues with the distributor not staying in the drive slots. Today I will see how well the JB did and file off the excess. I will make a gasket with thicker paper and snug down the distributor after I reposition the oil pump because the rotor is pointing past #1 s I cannot get enough total advance. I still need the cover

I have some front covers. I might be able to ship one out tomorrow. Send me an email if you're interested. I'm not sure what they're worth but I'll be fair.

Chuck

cbuczesk@comcast.net