Safe RPM

[Socalman]

My confusion is I didn’t have to really force anything in, meaning I didn’t have to force anything in. If the trans was to be sitting level and not to the right, I would have to probably force it to be level?? If that makes sense? The engine looks level, but it would somehow need to be rotated left for everything else to be lined up on the rear end of the trans. Aside from my OCD with the shifter, everything seems to work and shift properly. 

[]2eDeYe]

The bottom of the oil pan should be level across right to left and a 5ish degree tilt running front to back.

 

My mounts use 4 holes on the block. It drops under the oil filter. 

[Socalman]

25 minutes ago, ]2eDeYe said:

The bottom of the oil pan should be level across right to left and a 5ish degree tilt running front to back.

 

My mounts use 4 holes on the block. It drops under the oil filter. 

Wait, you make mounts for the Z24? I thought you said you didn’t? That’s why I only bought the trans mount…

[]2eDeYe]

Oh I did not realize it was a Z block.

I wonder how close it is to the KA

[Stoffregen Motorsports]

7 minutes ago, ]2eDeYe said:

Oh I did not realize it was a Z block.

I wonder how close it is to the KA

I don't believe they are close at all.

[datzenmike]

3 hours ago, Socalman said:

It’s pretty tight in there but I’ll add some pictures of it before I cleaned it up….

 

 

This is a pre 1980 71B 71B and only used on z, zx, 810 and 620 L series engines. The front case is from a Z series engine so that is correct for a KA as far as engine orientation or rotation.

[Socalman]

 

37 minutes ago, datzenmike said:

 

 

This is a pre 1980 71B 71B and only used on z, zx, 810 and 620 L series engines. The front case is from a Z series engine so that is correct for a KA as far as engine orientation or rotation.

So it’s in there the way it should be? Just a little odd in a 521?

[datzenmike]

Well it assumes the 510 engine brackets will work on a 521. Maybe the rubber isolator is thicker on the left side. No it does not look right.

[datzenmike]

OK 521 and 510 engine brackets are the same.

 

The 521 rubber isolators are the same part for both sides but the 510 uses a right and left and neither are the same part number as the 521.

 

Which rubbers are you using?

 

If the 510 rubbers are thin on one side and thicker on the other then using 521 rubbers is going to rotate the engine slightly for sure.

 

Get the KA engine brackets that ]2eDeYe makes and compare them.

[Socalman]

4 hours ago, datzenmike said:

OK 521 and 510 engine brackets are the same.

 

The 521 rubber isolators are the same part for both sides but the 510 uses a right and left and neither are the same part number as the 521.

 

Which rubbers are you using?

 

If the 510 rubbers are thin on one side and thicker on the other then using 521 rubbers is going to rotate the engine slightly for sure.

 

Get the KA engine brackets that ]2eDeYe makes and compare them.

I’ll try the 521 rubbers, I am using the ones I got with the engine which I assume were the 510s but they were identical left and right. Will the KA brackets work for the Z24?

[datzenmike]

No. I think 510 rubbers, might, I say might.... change the angle.

[]2eDeYe]

I am going to say those fabbed engine mounts are whack. 

In this picture you can see the engine is at an angle compared to the square engine bay. 
This is before the trans mount is even installed.




Just for more info. The 521 engine mounts are 1-5/8" ish tall and the 620 are 2" tall. 
I believe the 510 are the same height as the 521 mounts but not as beefy. 

[Socalman]

1 hour ago, ]2eDeYe said:

I am going to say those fabbed engine mounts are whack. 

In this picture you can see the engine is at an angle compared to the square engine bay. 
This is before the trans mount is even installed.




Just for more info. The 521 engine mounts are 1-5/8" ish tall and the 620 are 2" tall. 
I believe the 510 are the same height as the 521 mounts but not as beefy. 

I think that’s probably it at this point. But I’ll fiddle with the mounts for a bit later today. Probably just live with it until someone makes better mounts for sale. 🤷‍♂️

[Stoffregen Motorsports]

Not to add to the confusion, but I always thought the 521 mounts were taller, and they didn't have that safety lip.

[Stoffregen Motorsports]

https://www.new-datsun-parts.com/Datsun-Pickup-Parts-For-Sale.html?unique=17126037301998856

 

[Stoffregen Motorsports]

https://www.ebay.com/itm/176158129060

 

[]2eDeYe]

I think they are the same height.
I know Icehouse uses 620 mounts in the 510 to get a little lift over the stockers when swapping in a KA. 

[Socalman]

So I had one of each in, what I assume are 510 and a 521 or at least what I previously had as a 521. I tried both 510s and pan hit crossmember. So I tried both 521 but I couldn’t get one side to from enough to get holes lined up… I had to take some material off the left side mount bracket to get clearance as well as flip the mount. Looks and clears way better but now transmission tail doesn’t line up with mount. Just one hole

Edited July 5 by Socalman

[datzenmike]

5 hours ago, ]2eDeYe said:

I am going to say those fabbed engine mounts are whack. 

In this picture you can see the engine is at an angle compared to the square engine bay. 
This is before the trans mount is even installed.




Just for more info. The 521 engine mounts are 1-5/8" ish tall and the 620 are 2" tall. 
I believe the 510 are the same height as the 521 mounts but not as beefy. 

 

L series engine tilt is 12⁰ to the right side.

 

Z and KA are tilted about 8⁰ to the left of vertical.

[Socalman]

Took off material here..

[Socalman]

How it sits now….

[Socalman]

Shifter is centered now…

[Socalman]

Appears to me, tilt is not the issue. It’s centerline. Am going to say because of engine brackets…but I am no expert on this…

[Socalman]

I don’t know what these measurements are supposed to be but it’s definitely not centered between frame rails….1.5” difference