Does anyone know if there is a difference between the LSJ and the LNF throw-out bearing. I am about to change out my 05 ss/sc clutch (to a SPEC 2+ with flywheel) and what to know if the LNF is a better part and will it fit my LSJ

thanks

 

search button. LNF= better stronger cheapet.WTF

 

Doesn't LNF have a slightly longer stroke to it? I think I read that.

 

yes 10% longer throw.

 

lnf is the same exact size, i have a new lsj and lnf out of the box at home and sitting on the table they are identical heights, when compressed they are the same way

the spring on the lnf is a bit thicker from the way it looks, but i haven't measured it

i'm not sure where the whole thing about lnf being longer came from

 

Thought so.

Without micrometer to properly measure, you'd never know for sure.

 

i can assure you that it's not 10% difference on the throw, i was just referring to the spring

 

GM state that it is 10% longer in travel bsed on drawings. You wanna doubt it? go figure

i guess I will pull them off the shelf and measure them...

 

i'd be interested in seeing the results, i'm working all weekend and can't get into the garage. if not i can check them on tuesday

 

yes i did doubt and i am 100% correct. wherever this whole "10% longer" thing started is a load of crap, i'm guessing someone measured a used 05-07 TOB, against a brand new 08-09 TOB. was able to get back in the garage this morning and measured both of them:

my brand new LNF TOB is 0.0094" SHORTER than my brand new LSJ TOB.

those are extremely small tolerances and are numbers that would be completely irrelevant to the operations of the unit.

 

with my lsj TOB and my exedy. the car would creep forward when putting it into gear like the clutch was not completely coming off.

i swapped to an LNF TOB and this issue was gone. i dont have any fancy tools or testing equipment to record this but it is a real life experience to attest to it having more of a throw

 

Thanks for that, its what I have found as well. I have an LNF TOB on my desk here. I keep them in stock. I am trying to work out in my mind why I would bother to hunt around for an old LSJ one to do a measured comparison? Not working for me at the moment.

So there you go. LNF CSC has 10% more throw than an equivalent LSJ.... I guess you have to look at the system in its totality? Interesting concept.


Oh and even if it is 100% the same IT IS A LOT CHEAPER. so whats the problem?

 

So where do you buy this LNF? I just bought an ACT clutch kit and I need a new tob, I would rather get the lnf because of obvious reasons.

 

there is no problem, you just said i was wrong, when i was sitting there physically looking at both of them and couldn't see a single difference.

sometimes when you're wrong, you just have to say "damn, i was wrong" and not try to justify the claims by expanding the criteria from which the statement was based

 

dont know havent measured the devices in a hydrualic motion.If I do I will let you know. And I never did measure it, GM say its 10% longer throw...who are they anyway?

Try Gene Culley at GM parts house, or Tom at Crate engine Depot both are very good to deal with....

 

I have measured the difference in actual in car operation between the LSJ CSC and the LNF........

The LNF has just over .030" more throw than the LSJ in operation. The LSJ has an average throw of 8mm......you do the math, I already did.

 

they're the same people that wrote in my owner's manual that i am only supposed to put 5 quarts of oil in the LSJ

8mm? seems it needs alot more than 8mm to me. once we get the stuff together, i'll measure that

 

well you got an oddball because mine says 6.x i can't remember exactly.

Are you looking in the area that DOESN'T include changing the filter? Because that makes a difference.

 

i got one of the first ones, all of our early 05 books say 5 quarts of oil

 

GM doesnt print the manuals


Nope its only 8mm the LNF is a little more. The CSC has alot more(probably 3times) movement if youre playing withit in your hand, but installed and during operation it doesnt move anywhere near as far as the physical limits of the piece would make you think.

 

yeah i've never looked at a compressed pp, guess it really depends on the design of them how far it needs to go

 

Yeah a while back Maven did a project on this (at my request) I forgot about that. I dont know how it is in Kentucky, but up here it can happen when you point fingers, sometimes it points right back at you. So maybe you should re-read your posts.

 

i didn't say he was wrong, i said it seems like it would be more than that. if i said he was wrong i would've been like, "there's no effin way it's only 8mm"

your semantics based arguments are feeble to say the most.

 

Have we all gotten so tangled up in the postings and chatting that we forgot how to check the dipstick??...no not the one you walk around with in your hand all day..sorry couldn't resist

 

wow that's a great idea, i never even thought to check the dipstick! thanks pal