Duffy's 1/71 Series 1 240z build

[zztom]

Did you need to lift engine to install pan  ?

[duffymahoney]

3 hours ago, zztom said:

Did you need to lift engine to install pan  ?

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

[madkaw]

15 hours ago, zztom said:

Did you need to lift engine to install pan  ?

There is room but the crankshaft has to be in a certain position so no crank throws are sticking down around the rack and pinion area. 

[duffymahoney]

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. 

[duffymahoney]

More porting updates. 
 

now time to pick valves 

[grannyknot]

6 hours ago, duffymahoney said:

More porting updates.

How do you keep from grinding out the valve seats and guides or does it not matter because they will be replaced anyway?

[duffymahoney]

3 hours ago, grannyknot said:

How do you keep from grinding out the valve seats and guides or does it not matter because they will be replaced anyway?

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

[grannyknot]

Looking at it again I can see he has already removed the valve guides so he can get tight in around the guide hole, smart.

[madkaw]

3 hours ago, grannyknot said:

Looking at it again I can see he has already removed the valve guides so he can get tight in around the guide hole, smart.

I was too cheap since my guides were good.  I imagine he waits to do the valve job after wards . He can get nice and tight on those seats and if the grinder skips or gets scratched the valve cutters will clean it up. I would also think he put the larger seats in and is blending before doing final valve job. 

[duffymahoney]

So neat looking 

[duffymahoney]

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.  

[duffymahoney]

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.