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Install New Flexplate and Verify Starter Engagement

6:29
33:52
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At 6:29 in

Budget Turbo Yukon XL 4L80 Conversion (Part 3): Sticking It In! Swap Tips + HD Transfer Case Hunt!

What happens here

Install the new flexplate onto the engine. The presenter notes the instructions call for 12 ft-lbs with blue Loctite for Boninfante bolts, while factory specs are 74 ft-lbs. He decides to use a torque of 65 ft-lbs with Loctite, preferring to err on the side of slightly tighter. After threading the bolts in by hand, he uses a digital torque wrench to tighten them. He pauses the process to verify starter engagement and clearance.

Goal: Secure the new flexplate and ensure proper starter functionality

Tools and materials

  • New Flexplate ProTorque — The flexplate being installed
  • Screwdriver — Checking starter Bendix engagement
  • Blue Loctite — Securing flexplate bolts

What they say

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handyman on the side right here is a series unit you're not going to break this let's see here are you actually going to read it i am going to throw it over your shoulder i'm going to read it uh i'm basically just looking for a torque spec on here pretty much uh the instructions say 12 foot pounds with blue loctite but it says with bonnet font bolts i don't have bonnefont both i just have the ones that came out of it and the factory torque spec for those is 74 foot-pounds so i think i'm just going to go with a solid 55 and still use the loctite because i'd rather make it too tight than not tight enough and have it come off i know i tighten the bolts on the escalades flex plate to the factory number of 74 and it's doing just fine so i foresee no no difference here yeah so it says it has transmission side lasered into here i don't know that it really makes a difference but there's like a little hole here and a hole in the crank i'm gonna line those up anyway just because i can't probably should uh it wants you to check the starter engagement before you do everything else i feel like there's a reason for that so we're not going to put the loctite in yet we're just going to throw a couple bolts in tighten it down and then knock the starter back up to see where the teeth are at once it pushes out because if for some reason this doesn't work i would hate to have to pull the transmission back out and do that so we're taking the easy way so in line with the instructions we're verifying the uh starter to flex plate clearance real quick i guess i'll just do that so i'm taller uh you can stick a little thingy in this hole here and kind of get the bendix to pop out and do it that way you can see it does engage it's not super tight it's kind of where it needs to be and i guess it's going to be stupid to come back out i don't know why it doesn't want to roll back that way and when it is not engaged uh the teeth have enough space in there away from the flex plate so we're good to go it says anything from 0.1 to 0.04 which i don't know exactly what that is but it looks good to me i've never actually validated this i've always put stuff together and it's always worked so i'm just gonna assume this is fine if there was a problem it would be apparent at this point so we're gonna take this back off and finish bolting all the rest of these things down here all right now i didn't impact these down i just used it enough to get it to where it was touching and we'll go here with…

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