Diseazd

Don't be fooled .........measure the fingers where the throw out bearing contacts, not the housing. The fingers on the clutch on the right come out. Measure each fingers to the floor, not the housing. It's a PITA to pull it again so measure twice and cut once. I just installed an Exedy 240Z clutch this weekend.....I used the collar on the left. Works like a dream!

The F54 block with P79 flat top pistons and .080 shaved head would give you approximately 10 to 1 compression ratio. The pistons will clear the head. What cam do you plan to run? I run stage III Isky cams in all 3 of my L28's with the above mentioned combinations. You will enjoy that combo if you decide to go that route.......it's a great engine combo.

Spitz.....That's original......this car only had 36,000 original miles.

Installed the engine, installed and bled the new brake and clutch master cylinders. She should be ready to fire up Saturday morning!

......and by the way.....while the flywheel is off, it's an easy task to replace the rear seal (if it shows any sign of age).

IMO ......Always replace the clutch and pressure plate and throw out bearing. Resurface the flywheel as well. It's a PIA to remove the tranny.......while it's out, do it right!

First of all, there is no 240Z or 280Z tranny.......they are all exactly the same dimensions. Think 240Z or 280Z clutch and collar. Like Carl said.....to confirm what you had, put the old and new clutch face down on the floor. Stick a ruler down the center of the clutch......measure the distance from the floor to where the throw out bearing contacts the clutch fingers. The old greasy clutch fingers should be closer to the floor (less distance) than the new Exedy clutch. That's why you used the tall (greasy) collar, because you had a 280Z clutch, but now you have a 240Z clutch and need the shorter collar.

Eiji @ Datsun Spirit got me some of those screws. Give him a call.

Koalia.....The sleeve on the left (in your first post) is a 240Z collar. If you have a new Excedy 240Z clutch and pressue plate, you would use the collar on the left. The throw out bearings are the same for either 240Z or 280Z.

Yes, a 280Z or ZX will work.Just buy an old stock flywheel and have it resurfaced for $10.00.

The console is restored, new boot for the manual stick and tranny installed. Engine goes in next weekend.

True Carl, but if you buy an 240Z Exedy clutch and pressure plate from MSA and use the 240Z collar, slave cylinder and arm, it'll work perfectly. I know because it's in all 5 of my Z cars....... absolutely no problems.....and will work with a highly modified L28 with no problems.

mn91.......Not sure, but my guess is that one tooth is disaster for an L series engine (valve to piston contact). You probably need to pull the head again, get the head repaired (new valves), then when you put her back together, pull the front cover and align the marks so the cam is timed correctly to the pistons before you put her back together. I don't believe you will need new pistons with a one tooth miss. IMO :pirate:

240Z clutch and pressure plate needs a 240Z collar. 280Z clutch and pressure plate needs a 280Z collar. 5 speed and 4 speed tranny's are the exact same dimensions.....it ain't the tranny you have to match, it's the clutch, pressure plate and collar that makes it work. It's that simple! Throw out bearings are the same for each.

I think OZ is "Dead On"! The timing mark is too far to the right of the notch, therefore the cam is one tooth too advanced. Your distributor seems to be OK though, because you set it at 11:25 with the piston at TDC compression stroke that should be correct. That's why they put timing marks on timing chains.....to get things lined up correctly. You always want to rotate your engine 360 degrees to make sure there is no valve to piston interference in case of missing a tooth before firing up a new engine.. IMO

Call Mike at Banzai Motorworks.......he's got the bumper bushings, not sure about the seat belt bolt covers.

Only if that loud clanking noise is your valves contacting the top of your pistons! :classic:

You said you were on TDC.....Are you sure it was TDC compression stroke (both lobes on #1 up and the the notch on the cam sprocket aligned with the mark on the cam timing plate and rotor pointing to number 1 on distributor)?

Does the engine fire at all, even if just a backfire?

Ditto to you George.....and to you too Frank!

.......rear gas tank and suspension installed.

The orange Z just picked up a clutch pedal........goodbye auto tranny! The clutch master cylinder is a welcome addition. Installing pedals and clevis pins was the hardest part of this resto......so glad that's behind me.

I just traded Eiji an N47 for a P79.......he may or may not have it committed.

Rich....The way I see it is you came in 2nd and Dan finished "next to last"! :bulb: Congrats to you on your trophy.

Sold in 6 hours....full price!