strenthing my IRS

TwirtleNutZ270 · November 18th, 2009, 09:57 PM

Originally Posted by Lefty

You'll see a HUGE difference w/ the 4:10's in there.

yeah great mod!

Mr.Soup · November 18th, 2009, 11:04 PM

Originally Posted by CobraVert69

i did some research on the cost of having bushings installed and its about 800 dollars so i was wondering if its a bad idea to put the 4.10 gears in w/o a bushing kit and maybe just with an irs brace. atleast for a little while. i dont really launch the car so im not sure what i can do. i really want to get some AFS wheels for it but i dont think ill be able too with the bushing kit. whats your input on it guys?

thanks!

yes you can just do the 4:10 swap, however the torque multiplication will amplify the wheel hop (in theory)

M.P. Cobra Fan · November 19th, 2009, 06:34 AM

I get less hop now with the 4.10's. More spin though.

CobraVert69 · November 19th, 2009, 05:45 PM

i guess what im trying to ask is do i really need bushings to put my 4.10 in and if i dont would i have to worry more about breaking IRS?

M.P. Cobra Fan · November 19th, 2009, 06:10 PM

No, you really don't need bushings, but it is a very smart move. You might as well replace atleast the IRS Differential bushings while you have the diff out of the car though. This will only add a couple of minutes to the total install time, and the ones from MM are not a bad price either. I would HIGHLY recommend atleast doing that. FTB or MM your choice, but do atleast on of them. I would also highly recommend getting one of the braces installed at the same time. Putting it in later is just going to cost more money in the long run.

As far as breakage, you will only have to worry about it if you are dirving the car hard.

CammedMysticCobra · November 20th, 2009, 12:02 AM

Best Cobras to buy 90 percent of time are old guy Cobra owners lol. Than theres the 10 percent which are just like the young people who buy it from the old guy.

Mr.Soup · November 20th, 2009, 01:10 AM

Originally Posted by CobraVert69

i guess what im trying to ask is do i really need bushings to put my 4.10 in and if i dont would i have to worry more about breaking IRS?

If you read the article on Full Tilt Boogie Racing Homepage they attribute most if not all the breakage to wheel hop. if you're careful to not stay in the throttle while it's hopping you shouldn't have to much to worry about.

M.P. Cobra Fan · November 20th, 2009, 08:55 AM

It's not just wheel hop. You can control wheel hop with the right set of springs and throttle control. However, if you have sloppy diff bushings, your diff will still shake like Oprahs thighs. Your diff shaking is bad bad bad.

November 19th, 2009, 06:34 AM	#23
M.P. Cobra Fan It's in the details Mod! 01 Cobra Vert Nov 09/10 ROTM! Join Date: Mar 2009 Location: Ft Stewart/Naples/Hampton/Tampa Posts: 11,013 iTrader: 1 reviews	I get less hop now with the 4.10's. More spin though. __________________ Pinup in signature by loish.net Modded Mustangs Cobra Club#007 Military Crew E5 VOTED MM's BEST SIGNATURE 2010. THANKS STANGGTR07

November 19th, 2009, 05:45 PM	#24
CobraVert69 Newbie 1999 Mustang Cobra n/a Join Date: May 2009 Location: MI Posts: 17 iTrader: 0 reviews	i guess what im trying to ask is do i really need bushings to put my 4.10 in and if i dont would i have to worry more about breaking IRS? __________________ what seems to be the officer problem?

November 19th, 2009, 06:10 PM	#25
M.P. Cobra Fan It's in the details Mod! 01 Cobra Vert Nov 09/10 ROTM! Join Date: Mar 2009 Location: Ft Stewart/Naples/Hampton/Tampa Posts: 11,013 iTrader: 1 reviews	No, you really don't need bushings, but it is a very smart move. You might as well replace atleast the IRS Differential bushings while you have the diff out of the car though. This will only add a couple of minutes to the total install time, and the ones from MM are not a bad price either. I would HIGHLY recommend atleast doing that. FTB or MM your choice, but do atleast on of them. I would also highly recommend getting one of the braces installed at the same time. Putting it in later is just going to cost more money in the long run. As far as breakage, you will only have to worry about it if you are dirving the car hard. __________________ Pinup in signature by loish.net Modded Mustangs Cobra Club#007 Military Crew E5 VOTED MM's BEST SIGNATURE 2010. THANKS STANGGTR07

November 20th, 2009, 12:02 AM	#26
CammedMysticCobra Regular Mustang MystiqueCobra2004 Join Date: Nov 2009 Location: Florida Posts: 380 iTrader: 0 reviews	Best Cobras to buy 90 percent of time are old guy Cobra owners lol. Than theres the 10 percent which are just like the young people who buy it from the old guy. __________________ Full bolt ons Fully built Teksid Block Custom Comp Stage 10s missing JLT, Acufab TB and 2.8 Kenne http://www.youtube.com/user/MysticCobra04 Sold not lost and will never be forgotten.

November 20th, 2009, 08:55 AM	#28
M.P. Cobra Fan It's in the details Mod! 01 Cobra Vert Nov 09/10 ROTM! Join Date: Mar 2009 Location: Ft Stewart/Naples/Hampton/Tampa Posts: 11,013 iTrader: 1 reviews	It's not just wheel hop. You can control wheel hop with the right set of springs and throttle control. However, if you have sloppy diff bushings, your diff will still shake like Oprahs thighs. Your diff shaking is bad bad bad. __________________ Pinup in signature by loish.net Modded Mustangs Cobra Club#007 Military Crew E5 VOTED MM's BEST SIGNATURE 2010. THANKS STANGGTR07

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