1969 Patrol, Take 2: Action!

Builds, refurbishments, restorations, upgrades

Postby yitzac1990 » Wed Aug 14, 2019 8:28 am

ive also started on designing my front caliper brackets!

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World's only Chevy LS powered G60 Patrol

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Postby yitzac1990 » Thu Aug 15, 2019 7:50 am

The other side of the front axle is done! The rear should be way easier, but its vacation time now for a week

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Postby Esteban » Thu Aug 15, 2019 8:01 am

Great progress!

Any special reason why you added the extra leaf in the spring? I like the fact of the curved geometry with less friction contact to the rest. Will be very interesting to see how it perform.

Weight wise, how is the Chevy/tranny power train comparing with the P engine one?
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Postby mdawg4x4 » Thu Aug 15, 2019 11:53 am

yitzac1990 wrote:The other side of the front axle is done! The rear should be way easier, but its vacation time now for a week

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Spring over conversion? Any concern for drive line vibrations to to drive shaft angles?
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Postby yitzac1990 » Fri Aug 16, 2019 6:19 am

Esteban wrote:Great progress!

Any special reason why you added the extra leaf in the spring? I like the fact of the curved geometry with less friction contact to the rest. Will be very interesting to see how it perform.

Weight wise, how is the Chevy/tranny power train comparing with the P engine one?


That extra spring was already on the patrol when I got it. I'm guessing the spring pack was sagging a bit so previous owner added a helper? And I have wondered about the weight question...honestly I think the v8 weighs less or the same as the P engine.
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Postby yitzac1990 » Fri Aug 16, 2019 6:22 am

mdawg4x4 wrote:Spring over conversion? Any concern for drive line vibrations to to drive shaft angles?


I'm basically just gonna send it and see what happens lol. I had a Suzuki samurai with a spoa swap and unbalanced and crooked driveshafts (previous owner) and it definitely shook a lot, but it was just a toy, like the patrol will be. Once I get everything together and on the ground I will check angles and all that, and add shims if needed.
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Postby mdawg4x4 » Fri Aug 16, 2019 12:02 pm

yitzac1990 wrote:
mdawg4x4 wrote:Spring over conversion? Any concern for drive line vibrations to to drive shaft angles?


I'm basically just gonna send it and see what happens lol. I had a Suzuki samurai with a spoa swap and unbalanced and crooked driveshafts (previous owner) and it definitely shook a lot, but it was just a toy, like the patrol will be. Once I get everything together and on the ground I will check angles and all that, and add shims if needed.


And it's not like you are going to be doing 75 down the interstate every day.
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Postby yitzac1990 » Fri Aug 23, 2019 7:09 am

back from vacation, and back to work. I took some measurements of the front spindle, hub, and caliper to create a 3d model to help with bracket creation:

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I also put the front axle back on the patrol last night! big difference Id say!

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Postby moore_rb » Fri Aug 23, 2019 9:59 am

yitzac1990 wrote:honestly I think the v8 weighs less or the same as the P engine.


The P engine (and the chevy I6) actually weigh about 50% more than a SBC with iron heads.

Nissan 6: 640 pounds (Chevy inline 6 is just a few pounds lighter- about 630)
Iron head Chevy small block: 430
aluminum head Chevy: 400

regarding the springs- the perfect neutral stance for a SOA conversion is for the springs to be horizontal (zero arch) on flat ground, and for the spring rate to allow equal amounts of compression and droop travel. Any positive arch on the front springs at final ride height increases droop travel, and decreases compression travel, which results in increased likelihood of bump steer.

and this geometry should really be set with your final powertrain choice all mocked up in the vehicle
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L-R:
White 65 Hardtop L60-3-00617 (undergoing restoration)
Red 65 hardtop 4L60-002565 (scrapped for parts)
66 Hardtop "El-Bondo Patrol", L60-00511 (Restored, then sold June2020)
Blue 67 Hardtop (sold March1997)
Green 62 Softtop L60-2-00504 (undergoing restoration)
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Postby yitzac1990 » Fri Aug 23, 2019 1:16 pm

moore_rb wrote:and this geometry should really be set with your final powertrain choice all mocked up in the vehicle


yes sir, the whole drivetrain (engine, trans, TC) is in and set already.
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