Datsun 280Z - 3.1L Stroker - First drive with new jets

Well, this is the first drive with the new jets in. The progression circuit was causing trouble before. My idle jets were too small causing the progression circuit to lean out. Remember: Just because it's CALLED an idle jet doesn't mean it only controls idle. The other thing is that the idle mixture screws don't affect the progression circuit, so if your idle jets are too small, there is no getting around buying new ones.

Now it runs rich, though from here I have a ballpark to start tuning. It's presently got 135 mains, 185 air correction, 60F9 idle jets.

Category:

Autos & Vehicles

Tags:

• Datsun
• 280Z
• 240Z
• stroker
• 3.1L
• L31
• L28

[takulovesanime]

Looks like me driving around my Z with rusty fenders crappy wipers and a nice running engine. hit a bump a little fast and hood popped up and couldnt see anything once.

[bajcsi]

Well, at this point I've got flat black where there used to be sheet metal. Once I get everything mechanical fully sorted out, then I will get it painted for real.

[gav240z]

How did you remove the clunk in it? They all do that.

[bajcsi]

Well, first off everything is new or rebuilt except the driveshaft u-joints and the LSD itself. The actual clunk in question was related to the 4 bolts on the differential support at the rear of the diff. They were torqued, but not quite enough. The locking washers were compressed, but they still allowed a slight play.

Regardless, it makes no noise when I drive at this point though I haven't approached WOT yet.

[Emeianoite]

LOL!!!! "Do the brakes work?? ehhh good enough" 

[furious530]

how did u install the afr guage???? cuz my o2 is a 1 wire and all the afr guages are 3 wire....

[TheHondamonkey]

Now this is an engine note you dont even need a stereo in this car it sounds so damn good by it self.

[mattbibbey]

This is a good ride along video! Not all those crap ones where you can't hear the engine!

[k9forkids]

Man, this stroker motor needs a cam

[l28t260z]

sounds really nice... i was goin to go triple till i fell n love wit da turbo...

[gav240z]

Thanks buddy, I'll keep it in mind when I tear my rear end down. They all seem to have some form of clunk but its probably 30 years of neglect :).