duffymahoney

Here is my flow testing data Datsun Flow Testing Data.xlsx Duffys E31 Flow Testing 63" Static 15" Static 63 Degree Shop 45 Intake Valves 36.5Exhaust Valves DSI Big Valves LIFT Manometer CFM LIFT Manometer CFM Porting By Andrew Kazanis of Mad Greek 0.05 50 35 0.05 14 35 Date: 2/22/2020 0.1 45.25 60 0.1 13 55 0.15 41.75 90 0.15 12.1 80 0.2 36.5 125 0.2 11.5 95 0.25 33 140 0.25 11 115 0.3 31 160 0.3 10.7 125 0.35 27 190 0.35 10.5 130 0.4 23 220 0.4 10.3 135 0.45 21.5 235 0.45 10.1 145 0.5 21 235 0.5 10.1 145 0.55 21.2 230 0.55 10.1 145 0.6 27 190 0.6 10 150

So smooth

Data is back! She flows pretty darn well.

Datsun Spirit valves are in my E31! Next is flow testing. Thanks for all the help Andrew Kazanis Details: New guides, bronze guide liners, reamed to size, seats cut, three broken studs removed.

My oer/ SK intake plan is going to be perfect. Basically I’m looking for a clean way to do iac and pcv. I will have a plate machined to cap this faux balance bar. Then tap each runner for 1/4 or 3/8. I love the oer/ Sk linkage. The IAC and PCV will be done on the bottom out of sight. This is what the Sk/ oer intake look like under that cap. Casting is a little rough for my personal tastes. I will use a Bosch 0280140551 IAC.

Leon Chisler's vintage OSGiken head. Straight L series engine porn. What he is doing to it. CP pistons, 90mm stroke en36 crank 89 bore billet chromoly caps crank girdle plate 3400 liter

So cool.

Real results would be dyno time and lots of headers. But I doubt that would ever happen. So many variables, I think it would be impossible to really test. cams, port work, compression, engine size, exhaust size, carb size, efi or not etc......

I don't know if it's a greddy shape. I would say it's not equal length. It is ceramic coated though.

The new fujitsubo header would be my easiest route, but the true equal length sure looks cool. Which is my goal. There is zero wrong with my current header. I contacted star road and spirit garage. Asked both about bolting up to the newer style fujitsubo exhaust.

Lol, 1.5 model? Between 2. New style exhaust, either adapted older header to the newer style exhaust or a test header? Who knows. It isn't the old style exhaust for sure. Fujitsubo did say that the old style header won't bolt onto new style exhaust as well. I guess the flange is in a different spot.

I have my next header narrowed down to a Star Road or a Spirit Garage. I want bigger and equal length. I currently have a new style fujitsubo.

I am running full sequential. Hoke crank trigger and jeep cas with a haltech elite 750 ecu

I used RB coils. lots of guys have used LS or ford coils. RB is a stronger coil then the LS unless you buy the AEM version

So neat looking

I have no clue, I am not doing the work. I believe he leaves the seats in, then replaces at the end.

More porting updates. now time to pick valves

My engine builder/ fellow Z nerd has started porting my Prestine e31. That I also vapor blasted. This will be my head for my stroker build.

No I didn’t. I have new motor mounts. Maybe that helped? It was tricky. But slid on.

Powder coated pan is in. Wow what a pain to do on my back under the car. I need a lift! I did just past snug 3x around with a 1/4 ratchet. Hopefully she doesn’t leak.

You can pull the pan without pulling the motor.

Pull the pan off, I didn't do that right away. Mine sat from the late 70s till 2 years ago (39 ish years). I pulled the pan last week, and it had crazy sludge in the bottom. So I have been driving around with nasty sludge.

Those tools like very neat! Someday I might paint this car, but I would rather not. Thank you for the compliment. It's been a fun project. I really like working on the Z.

Now that is neat! I found out about TFC when I got a set of ztheraphy carbs. I was impressed by the zinc. So I emailed them and asked who the shop was. They are usually pretty fast as well. Most zinc shops are slow and smaller batches aren’t important.

I think I have used 4 shops over the years. Most are the same. I currently loving TFC in Oregon. Prep is key.