what exactly is the LMA do? are the prelude LMA better than the itr?

 

cheaper for damn sure

 

what does the lma do?

 

Damn i wish i still had the R cam that i got from a guy who used B16 lma's. It was destroyed from slapping around.
Its simple...
They are a nipple that sits under the rocker and absorbs the vibration of the rockers when the VTEC is not engaged (VTEC locks all 3 rockers together when it is activated otherwise the middle rocker arm sits on it's own when the 2 flanking nonVTEC rockers are in operation) so that the rocker arm isn't noisy and rattling around. The LMA is a noise suppressor which will keep the center rocker from destroying the rocker and cam while not in vtec. think of it as a shock.....

The ITR ones are the largest ones available and worth getting if you are getting big time cams...

 

^ thanks

 

http://www.superhonda.com/foru...01826

 

even better

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Rene M &raquo;</TD></TR><TR><TD CLASS="quote">The ITR ones are the largest ones available and worth getting if you are getting big time cams...
</TD></TR></TABLE>

I beg to differ on that. I use and have used the Prelude LMAs in mine with a shim for a while now. On Pro 1s and even Pro3s. Never had a scarring issue or anything like that. ITR ones have proved no better than the Prelude with shim. for the price, performance, and reliability, there is no reason to choose the ITR one for $40ish per over the the prelude one for $7ish per.

-Francisco

 

Im using prelude LMN's off a 1999 prelude. $7 each new I used a shim underneathe it.

 

I have heard that using prelude LMA and properly shiming them will work the best because they dont were out.

 

personally i'd rather pay the extra and know i have the real deal

 

real deal? How are the Prelude ones fake? If a h22 makes about 200hp stock, whats the problem with using them in a b series? They work.

 

any info on the shim...
what size
where to get it from?

 

there used to be a thread on here. but it looks as though its been deleted https://honda-tech.com/zerothread?id=1359677 is a reference thread to someone selling the shims.

 

didnt see any 1 selling any
but i guess its .040 from the posts

 

I'll be running the Prelude LMA's, and here's why I believe them to be a good idea. I had read omniman's old thread on it, he's used them on numerous race engines.

The problem I see with the integra LMA's (including ITR ones) is that their design is a three piece design. A base hollow cylinder, a spring (and small wire clip), and then the cylindrical "slug" that fits in the base cylinder.

binding occurs when either the force applied is no longer directly on the pad area (as occurs on high lift cams, the force is angular and therefore pushes the slug into the cylinder wall). Also, if there isn't sufficient oil inside the LMA assembly, it can dry out and no longer travel properly.

The Prelude LMA is simple and effective, a pad attached directly to the spring. The OD of the spring fits into the LMA bore in the head. No oiling problems, if a force is aplied at an angle, the spring will conform accordingly, and the pad area is quite large to maintain contact with the center rocker arm. Price had nothing to do with my decision, if I thought the ITR ones or any others were a better option, I would have bought them. It just so happens that they are significantly cheaper (due to the simpler design a eliminating the need for precisely machined components).

My $.02

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RPRacing &raquo;</TD></TR><TR><TD CLASS="quote">real deal? How are the Prelude ones fake? If a h22 makes about 200hp stock, whats the problem with using them in a b series? They work. </TD></TR></TABLE>


they may WORK but they weren't designed for that engine.


i'm paranoid about doing something to my car using parts that weren't designed for it just to save a few £££'s, on an engine thats used as a daily drive, and needs reliability

 

If you just use regular LMA's with larger cams than they will were out faster. This would be the only reason to use the prelude ones. You dont get any performance gain. It just saves timing on having to pull them out and swap again.

 

as i've got OEM cams i think i'll leave them as they are

 

" if one were to use type r lost motion assemblies they would need to shave that amount off of them for them to function correctly and sit at the correct height."


I didn't hear about this.

 

LOL. Dont listen to that crap.

its a 1/4" stainless washer .040" thick. It really doesnt matter for the height, honestly. There is still another .040" in height difference between a prelude LMA and 1996+ GSr/ITR LMA. Ace hardware has them.