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Consummate Learner
IRS Diff offset?
I've got a Gen1.5 chassis with the 2015 IRS. Does anyone else see the potential issue here?
DS-C-02.jpg DS-C-01.jpg
I don't have a driveshaft yet, and my trans is in pieces on the workbench right now, but this looks like a problem to me. Is the pinion supposed to be this far offset to the passenger side? It almost looks to me like there's going to be interference between the driveshaft and the "driveshaft loops" on the chassis.
-- Mike -- TxMike64 -- @TxMGarage
Gen1.5 Hot Rod '33 #1094 (Stage 1) - 302/AOD '15 IRS - Quad Built - Build Thread
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The transmission and diff need to be offset so the needle bearings in the u-joints spin properly. Unless the driveshaft contacts something when it's installed, I don't see a problem.
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Senior Member
Keep in mind the drive shaft itself that will go through the driveshaft loop in the frame is only 3" in diameter and not the same diameter as the mating surface on the differential. I think you'll be fine.
Jim
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Senior Member
Yes! Offset is required for proper u-joint operation. All OEM factory vehicles with a driveshaft are offset.
33 Hot Rod Stage 1, Gen.2 ordered 11/11/2021 started June 12, 2022, LS3 E-Rod crate engine, Tremec TKX, 8.8 WITH 3.55 Ratio and limited slip with 31 spline axles.17X8 and18x10 Race Star wheels wrapped in Conti Extreme contact DWS tires, Mustang Cobra brakes all around. Electric PS and AC. Hard top, electric windows and bike fenders. First Start 5/31/2023. Go-Kart 6/2/2023.
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Senior Member
Same configuration (Gen 1.5 chassis and IRS), no issue. Yes it ends up tighter on one side but still lots of clearance.
Steve
Gen 1 '33 Hot Rod #1104
347 with Holley Sniper & Hyperspark, TKO600, IRS, 245/40R18 & 315/30R18, DRL, Digital Guard Dog keyless Ignition
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Post Thanks / Like - 1 Thanks, 0 Likes
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Consummate Learner
Originally Posted by
FF33rod
Same configuration (Gen 1.5 chassis and IRS), no issue. Yes it ends up tighter on one side but still lots of clearance.
Steve
Thanks Steve! This is the response I was hoping for.
-- Mike -- TxMike64 -- @TxMGarage
Gen1.5 Hot Rod '33 #1094 (Stage 1) - 302/AOD '15 IRS - Quad Built - Build Thread