FRS 4.8 LS swap

[kurty85]

Originally Posted by Ashikabi

That's not bad... That's what an IS300 diff costs and this has better gearing

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Absolutely. I bought an 8.8 thunderbird diff from ebay and was planning on doing that first but none of the vendors would sell me a rear cover that would fit the FRS subframe. They said not enough of the kits sell so they are matched. Instead I did this. The price breakdown is this:
TV6-358-29-NG Toyota 8", 3.58, 29 Spline, Nitro Ring & Pinion $294.95
YOKTOYFITKIT-29 Toyota, 29 Spline Fit Kit (Includes: Pinion Flange, Pinion Seal, Pinion Nut) $83.48
MKTLC100-IFS Toyota 8" Reverse IFS Nitro Master Install Kit, 100 Series $311.45
SKCSTV6 Toyota 8" V6 & FJ80, Nitro Solid Spacer $37.84
NPLUBE-3 80W-140 Nitro Para-Synthetic Plus Gear Oil, GL5 (3 Quarts) $59.50
Total: 787.22
CHESAPEAKE CITY shipping: $47.23
Grand Total: $834.45

You do have to have a few tools but nothing too bad: 12 ton press from harbor freight (170), punches, impact, deadblow hammer, bearing separator, dial indicator, etc

[Ashikabi]

Originally Posted by kurty85

Absolutely. I bought an 8.8 thunderbird diff from ebay and was planning on doing that first but none of the vendors would sell me a rear cover that would fit the FRS subframe. They said not enough of the kits sell so they are matched. Instead I did this. The price breakdown is this:
TV6-358-29-NGToyota 8", 3.58, 29 Spline, Nitro Ring & Pinion $294.95
YOKTOYFITKIT-29Toyota, 29 Spline Fit Kit (Includes: Pinion Flange, Pinion Seal, Pinion Nut) $83.48
MKTLC100-IFSToyota 8" Reverse IFS Nitro Master Install Kit, 100 Series $311.45
SKCSTV6Toyota 8" V6 & FJ80, Nitro Solid Spacer $37.84
NPLUBE-380W-140 Nitro Para-Synthetic Plus Gear Oil, GL5 (3 Quarts) $59.50
Total: 787.22
CHESAPEAKE CITY shipping:$47.23
Grand Total:$834.45

You do have to have a few tools but nothing too bad: 12 ton press from harbor freight (170), punches, impact, deadblow hammer, bearing separator, dial indicator, etc

Not enough of the 8.8 kits sell? That's kind of a relief cuz I was designing a kit at one point to swap a Camaro diff into this chassis and abandoned it. Glad I didn't put any more time or money into it

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[kurty85]

Originally Posted by Ashikabi

Not enough of the 8.8 kits sell? That's kind of a relief cuz I was designing a kit at one point to swap a Camaro diff into this chassis and abandoned it. Glad I didn't put any more time or money into it

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It is definitely due to the cost. The full blown kit costs 3995 without a diff. The diff is another 1895. The Grannas kit is 3185 plus 2000 for the diff. I would never buy those. I just wanted the mounts to make things easier. Maybe I will do a Rob Dahm and steal their cad designs like he did with the Hoonicorn lol.

[Ashikabi]

Originally Posted by kurty85

It is definitely due to the cost. The full blown kit costs 3995 without a diff. The diff is another 1895. The Grannas kit is 3185 plus 2000 for the diff. I would never buy those. I just wanted the mounts to make things easier. Maybe I will do a Rob Dahm and steal their cad designs like he did with the Hoonicorn lol.

That's what attracted me was the cost ratio. The front mount is relatively easy to design. The rear cover is kind of a bitch though. Ive got a better idea what's involved now so I could do it better/faster than last time. What would you consider an acceptable price?

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[kurty85]

Originally Posted by Ashikabi

That's what attracted me was the cost ratio. The front mount is relatively easy to design. The rear cover is kind of a bitch though. Ive got a better idea what's involved now so I could do it better/faster than last time. What would you consider an acceptable price?

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I would think 150 for the front mount with bushings and the rear cover 350-500 with bushings. There are 8.8 covers for days between these amounts. Maybe I am low but a little more wouldnt be so bad.

[Ashikabi]

Originally Posted by kurty85

I would think 150 for the front mount with bushings and the rear cover 350-500 with bushings. There are 8.8 covers for days between these amounts. Maybe I am low but a little more wouldnt be so bad.

I'd be hard pressed to make them at that price in low volume. For"standard" applications where trick flow is making 100 at a time, that's when you get a cover for 350$. This is rough guessing of course drive I haven't quoted out the part. But just with my knowledge of what the Camaro cover looked like pretty confident the 2 mounts could be sold with reasonable profit for under a grand though. If anyone wants to be a guinea pig for me I'll be happy to work with you too develop something.

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[kurty85]

Got the front diff mounts removed today in prep for powdercoating. The diff housing is stripped. What a pita to remove even with a torch. Using Whiteline KDT923's for the front and KDT924's for the rear mount. Going to use KDT922 bushing lockers for the subframe for stiffening. Don't want completely solid mounts. Think this will be a good mix of NVH and less slop. All poly mounts. Also got the new pinion and solid crush spacer.

[kurty85]

Got the diff powder coated satin black and the rear cover. Need to assemble now!

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[kurty85]

Started on upgrading the fuel cell to handle 3-4 pumps. I cut off the top of the aeromotive cell, made a 6x10 top hat and a center surge area and bought 3 DW400 pumps to install. Using a radium 3 into 1 distribution block to a bulkhead fitting then out to supply. 1 relay for each pump and the 2nd and 3rd pump will turn on at 4psi and whatever psi above that (probably 14psi) with a hobbs switch. With 3 DW400 pumps I should be able to have any amount of fuel I need. Going to pressurize the cell and check for any leaks then start closing it up. Mounting it in the new rear floor I put in. Riveted all around every 1 inch and sealed top and bottom.

[kurty85]

Got the pumps installed on the hanger and wiring done. Just need grounds now and tank reinstalled. 3 DW400 pumps with 3 30A relays. I can upgrade the output size if needed by switching to a 10an union, 10an bulkhead fitting, and 10an fitting on the radium block.

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[jeepmor]

This is how you end up with a machine shop in your garage. Oh yeah.

[kurty85]

Got the tank finished and reinstalled. Pressure tested the tank and it holds pressure with no issues. I wired two hobbs switches in to turn on at 4psi for the second pump and hopefully 12psi-15psi for the third pump. I want to run E85 and see where I am at after tuning then bump lines up to 10an if needed.

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