gundee

A few others from above grid line up.

Qualifying grid from Friday. A couple Zs out from California. Long haul.

Mine is wired the way Mike describes it. That way I can prime the Mikuni's before starting engine. I picked up an inertia cut out switch that I have to install yet.

No I have it correct. The flat end is shown where the overrider goes. My original was longer. Nissans vendor screwed up I think. Poor quality control.

I am attempting to put new bumper rubber strips on my 72Z. As you can see the replacements are shorter. I bought another set and got the same thing. P/N 62690-E4100. Anyone else ever run into this?

Now that I have the float system corrected it is really responsive to the throttle now. Best its been. Now I am looking for my 36mm chokes to try out. Its only been about 25 years since I removed them for the 34mm.

Got the correct Mikuni float needle valves. They are installed and measurement set. What was in mine were the old Grose Jets for those who remember those. Turns out they were set for too high fuel level in bowls. And I also found out they are prone to leaking. On Wednesday I am hoping to run it again. Should be much better. And here I thought It was running pretty good. Did you know there are 5 different models of Mikuni side draft carbs? Wolfcreek shows all 5 on their website so you can ID yours.

Phil Hollenbeck. Thompson Speedway Motorsports Park.

Is this supplier any help? https://www.pegasusautoracing.com/productselection.asp?Product=3253

They should look like this at full droop.

The package does have 'ATS' marked on it so may well be Atsugi make. And they also have that white paint mark on them. Thanks!

Former BRE Team member and one of the founders of Eletramotive with Don Devendorf. https://www.racer.com/imsa/item/142023-john-knepp-1942-2017

Same with mine, but the other side is a 's' instead of the 'x' on yours. I got these in packages shown from another person. It does have the factory P/N on them but some of these aftermarket suppliers sometimes like to mark the Nissan number on their package. Don't know if the (ATS) means anything on the package. I may keep them for awhile yet in case I set up another cam in the future.

Are these OEM or aftermarket rockers from the markings?

WOW. Beautiful. I thought that was Ron Carters former 240Z. Who did that motor? Sounds fantastic.

Working on fitting my sliders to this seat I picked up off Craigslist. I would like to try this out as my drivers seat.

Sounds like it could be linkage slipped. Did you have someone push pedal to floor while you lift carb piston and see if the butterflys are fully open?

I know I was weak and sold my now rare NOS still in the box 5speed knob 6-8 years ago for $65.

They are out of western Massachusetts.

boldi as a FYI your engine builder passed away last December I found out. He was 64 and had some health issues I guess. He never owned a computer until the day he died. To pick his brain you had to call him. Very old school.

I run the 44PHH size and long story short, I need 3 float needle and seats. In the Mikuni catalog I noticed that they come in several different sizes. Do any of you know what size you run or the size they came with new?

I would say that is Sam Posey in the center. He is now suffering from advanced Parkinsons. I saw him several years ago and it was very noticeable.

I never knew you were supposed to do that first. (Activate) I just put them in straight out of the box. Maybe that is why I don't like them with my new springs.

That is really good to hear. Confirms my experience as I stated above. In my case I am not running as much compression or as big a cam as you are. If I could I would even try 32 chokes on mine, but 34mm is the smallest size that will go into my set up. When I did buy my Mikuni set up, the chokes were stamped 34. However the guy I got them from said they were actually bored out to 36mm. If he had not told me that I would have never known and thought I had 34mm chokes installed. I never ever would have got that thing to run right. Goes to show you can never assume anything.

Just a a note on my experience. When I purchased my Mikuni's it had 36mm chokes. It was just not driveable on the street. Like you I tried everything. Then I went to 34mm chokes and it was like night and day. All problems gone. It was only then I could start the fine tuning. If you had a track car running WOT 90% of the time you would be OK as you have it.