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Extra Flex CV Grind


 
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Black2001TJ
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Joined: 03 Jan 2004

PostPosted: Wed Jan 21, 2004 6:39 am    Post subject: Extra Flex CV Grind Reply with quote

Quote:
The Extra Flex CV Grind is entirely optional with your kit, it is
recommended for lifts above about 5" with a belly up style transfer case
skid plate. I only list this as I'm not sure what your future plans are, it
would not be required with your kit and is not required w/ a 4.5" RE Long
Arm for instance, only the 5.5" RE Long Arm.


This is a quote from Jason @ redrock4x4.com... He is very knowledgeable and this option seems to be something I'm curious about so that I can spend an extra <$70 now rather than having to spend way more later should I decide to go huge some time in the future. Anyone know anything about these? This is the first time I've heard about it... Is it OK to have on a 4" lift (I have the RE 3.5 SF, which netted over 4", even after 25K miles on the lift...)?

I definitely could see myself with a 4.5" long arm at some point, any bigger than that, prolly not, but who the F knows, right! So, basically, if it is OK to run now, I'd probably spend the extra dough to get it, if not, then screw it. TIA!
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'drack
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Joined: 01 Jan 2004
Location: points that way...

PostPosted: Wed Jan 21, 2004 9:36 am    Post subject: Reply with quote

With the 4.5" setup, you'll be more than fine for 35's. Do you plan on going bigger than 35's? If not, I wouldn't bother. I haven't seen/not familiar with this item, what exactly is it?
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Black2001TJ
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Joined: 03 Jan 2004

PostPosted: Wed Jan 21, 2004 10:37 am    Post subject: Reply with quote

Got a note from Jason I thought I could share to help others as well...

Quote:

The Extra Flex CV grind would work with your current lift. The only
difference between that shaft and the one w/ the Extra Flex CV Grind is that
Tom uses a different material for the CV joint and grinds it a bit to allow
for a greater range of motion. It operates the same, it just has more room
to flex if that helps make any sense of it. For your current needs it would
work the exact same as the regular shaft. Personally I don't care for the
5.5" RE LA kit as I used to have it on my TJ, I like the 4.5" MUCH better,
so unless you plan to go to a custom flat skid a 4.5"+ lift it's probably
something you wouldn't need. Personally I feel that anything over 4.5" of
lift on a TJ raises the center of gravity too much and it takes a real toll
on performance both on road and off.


Thanks for the response Drack!
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ehirner
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Joined: 01 Jan 2004
Location: Eastern PA

PostPosted: Wed Jan 21, 2004 1:32 pm    Post subject: Reply with quote

Keith, I'm not so sure you'd be able to use the same shaft anyway if you went higher. With the added height or the 4.5/5.5 versus the 3.5" you have now, you may or may not be close to the max expanded length of your shaft that you'll run with the 3.5 and SYE.

Does that make sense? Basically, you'd really want a longer shaft with the 4.5 & the 5.5 than you would with what you've got now.
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swamp boy
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Joined: 01 Jan 2004
Location: New Orleans LA.

PostPosted: Wed Jan 21, 2004 4:05 pm    Post subject: Reply with quote

Ive done this to my own stock shaft.. Thats how I am able to flex out totally with my stock shaftand 5.5.. Very Happy (HP 30 helped also) This is his name for grinding the space where the Joints would hit at full flex.. I have the double cardan shaft on mine and I grinded it out between the shafts..
I suck at the photoshop and If I took a picture you wouldnt be able to tell anyway.. Basicly.. Take your shaft and hold it up.. WHen it flops over.. THe part where the joint hits you grind a little bit... This will alow the joint to drop farther.. I took about 3/16 to 1/4 off mine.. It gave me a ton more room for flex without binding...

It worth it.. You never know when you are going to bind your shaft.. Its better to have a little more flex than you need.. than to bind and not be able to flex...
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Black2001TJ
Leopard Skin
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Joined: 03 Jan 2004

PostPosted: Wed Jan 21, 2004 6:06 pm    Post subject: Reply with quote

Thanks for the help guys.. Kinda torn Sad I'm gonna rest on this for a few days and see what I think. If anyone else has any input, it's greatly appreciated!
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