Replacing the booster is a headache, and does suck... but might not be necessary. IF you get the old MC off there and find any leakage or corrosion just replace it. If the car was a 4 banger swap, put in the larger one.
This is how I ran my lines with those pieces.
I feel like I should apologize to you. I'm sorry for my clean bottom. Hah!Dammit. Your pic makes me want to rip out my undercarriage and do this.
I did POR15 on my underside, but I didn't go into this level of detail.
I finally got a quote from a reputable shop and I nearly choked when I heard the estimate, $1256.50!! This is for a new 3.73 ring and pinion, new bearings, seals and rebuild trac lok, etc. WTF? I can do this myself, purchase a HF press, gauges, and perform this gear change 3x and still be under that quote.As long as you have the tools (indicator, mag base, and an in/lb torque wrench) it's actually a decently simple job. Trickiest part is getting pinion pre-load right (hence the need for the in/lb wrench). Getting the carrier bearings off is also a pita, but there's usually no huge need to change them.
Wow! I purchased a frpp 31sp diff,3.73 gears and installation kit,diff cover,moser axles,and had it all installed for just a little bit more than that! Is it a lot more labor intensive due to the cobra irs?I finally got a quote from a reputable shop and I nearly choked when I heard the estimate, $1256.50!! This is for a new 3.73 ring and pinion, new bearings, seals and rebuild trac lok, etc. WTF? I can do this myself, purchase a HF press, gauges, and perform this gear change 3x and still be under that quote.
LMR has their rebuild kit for about $250, new track lok for another $100. Seems like this is the way to go if I can't find somebody reasonable.
I think I'm getting hosed on the price. I have yet to see a post w/ pictures or video that details the Cobra IRS gear install. From what I've read so far the only difference between the IRS and SRA is you need a case spreader to get correct preload for the IRS. The reason behind it is that the IRS diff is aluminum and expands more that an iron SRA so you need to set preload with the aluminum case "expanded" a certain amount to mimic a heated environment. Other than that it's the exact same as your typical SRA 8.8 rear end.Wow! I purchased a frpp 31sp diff,3.73 gears and installation kit,diff cover,moser axles,and had it all installed for just a little bit more than that! Is it a lot more labor intensive due to the cobra irs?
I have done one ( my own) swapped to 373. Didn't use a case spreader and didn't have any problems either. I could have just been lucky. I've done a lot of ford rears and I set this one up just like any other 8.8... I did set it without the ring gear installed. Its not difficult. If you were here in Maryland you'd have to order me a needed part for my car and I'd help you out. Nothing big....let's say a set of crystal clear 6 piece headlights [emoji106] or...around 150- 200 bucks... Lol. Don't let them get over on you man. Sounds like they're just scared to touch it.I think I'm getting hosed on the price. I have yet to see a post w/ pictures or video that details the Cobra IRS gear install. From what I've read so far the only difference between the IRS and SRA is you need a case spreader to get correct preload for the IRS. The reason behind it is that the IRS diff is aluminum and expands more that an iron SRA so you need to set preload with the aluminum case "expanded" a certain amount to mimic a heated environment. Other than that it's the exact same as your typical SRA 8.8 rear end.
@bird_dog0347 @RacEoHolic330 @90sickfox do you guys have anything to add to this?
Thanks for that offer! Too bad I'm so far away up in the Pacific Northwest though. I did however find a helpful website forum post after some creative searching and got what I was looking for.I have done one ( my own) swapped to 373. Didn't use a case spreader and didn't have any problems either. I could have just been lucky. I've done a lot of ford rears and I set this one up just like any other 8.8... I did set it without the ring gear installed. Its not difficult. If you were here in Maryland you'd have to order me a needed part for my car and I'd help you out. Nothing big....let's say a set of crystal clear 6 piece headlights [emoji106] or...around 150- 200 bucks... Lol. Don't let them get over on you man. Sounds like they're just scared to touch it.
Ummm, wut? lol... Did you install that or it was already under the trunk carpet?
I think I'm getting hosed on the price. I have yet to see a post w/ pictures or video that details the Cobra IRS gear install. From what I've read so far the only difference between the IRS and SRA is you need a case spreader to get correct preload for the IRS. The reason behind it is that the IRS diff is aluminum and expands more that an iron SRA so you need to set preload with the aluminum case "expanded" a certain amount to mimic a heated environment. Other than that it's the exact same as your typical SRA 8.8 rear end.
@bird_dog0347 @RacEoHolic330 @90sickfox do you guys have anything to add to this?
That trunk floor cut out was what another person did to gain access to their fuel pump when it failed after their IRS swap.Ummm, wut? lol... Did you install that or it was already under the trunk carpet?
My gears were also done with the carrier out of the car and it was $150 for the labor, and they didn't have to spread the carrier like that. No problems with my gears whatsoever, just like any normal 8.8 gear install once it is out of the subframe.