Bee_R

[MINTER]

ive seen a few of these for sale on various sites now and was wondering how they affect engines in the long run..
ive a power fc in the car and im aware these have grounding issues with the Bee_r..
was wondering does anyone have one installed and what they like for drag use etc? and is the installation easy enough?
Ciaran.

[L18M]

bee r, i thought they do several products..?!
the only bee r i kno of cut the sparks at a limit which u can set it at and the fuel keeps getting fed.
i dunt see much poiint in bee r if u have a pfc as the pfc can do the same along with launch control.

[MINTER]

hmmm tell me more!!

[chrisJDM]

what is a Bee R mate? i thought they were a jap tuning company that specialise in skylines

[MINTER]

sorry should have said its the Bee_r rev limiter....coming from skyline ownership we tended just to call it the Bee_r...

[RedRummy]

I looked into getting one a year or so ago... would\'ve loved to but heard they can damage the engine

Basically, I think when it cuts the spark, the excess fuel is dumped down the exhaust, which then ignites and explodes... trouble is, the shock wave travels all the way back up into the engine and puts massive pressure on the seals..

or something like that... never did undestand it properly... and didn\'t risk it.

not sure if its any more damaging than on a normal piston engine, but the rotary is more delicate

[RedRummy]

http://uk.youtube.com/watch?v=C3ykv9csPus&feature=related

[L18M]

I looked into getting one a year or so ago... would\'ve loved to but heard they can damage the engine

Basically, I think when it cuts the spark, the excess fuel is dumped down the exhaust, which then ignites and explodes... trouble is, the shock wave travels all the way back up into the engine and puts massive pressure on the seals..

or something like that... never did undestand it properly... and didn\'t risk it.

not sure if its any more damaging than on a normal piston engine, but the rotary is more delicate

i thought it just helps prevent the engin goin lean when the fuel is cut.
i didnt kno about the shock waves travelling back up into the engin.. but then its got to get past the turbo 1st.

dont see much point in this unless u want to make flames. besides the launch control feature.. if ur a gd driver then u dont need it as a gd right foot can do just as well :3gears-rh
besides.. how often u gonna launch off the lights..? (thinking about it.. quite alot actually haha)

[BlitzBoy]

bee r, i thought they do several products..?!
the only bee r i kno of cut the sparks at a limit which u can set it at and the fuel keeps getting fed.
i dunt see much poiint in bee r if u have a pfc as the pfc can do the same along with launch control.

The standard Apexi Power FC does not have launch control you have to upgrade to the Pro version of the chip like Ed is selling

[SiH]

Just to clarify - I don\'t know how they work on a rotary, but...
On the SR20 piston engine, they don\'t work in a very sympathetic way - they don\'t actually cut the spark or ignition directly.

What they do do (According to tuning Guru Jez Horsham) is ground the CAS as random intervals! Hence teh ECU has no idea where in the combustion cycle the engine is, cueing random fuelling, ignition, and other nasty events.

On the SR they are often cited as being responsible for sending bits of rocker arm around the engine...

[RedRummy]

What they do do (According to tuning Guru Jez Horsham) is ground the CAS as random intervals! Hence teh ECU has no idea where in the combustion cycle the engine is, cueing random fuelling, ignition, and other nasty events.

On the SR they are often cited as being responsible for sending bits of rocker arm around the engine...

that does sound pretty nasty!  :eek

[SiH]

I\'m not saying I know about it, just what was said by a man who knows a LOT abotu how the SR20 works.
This may be intersting to some:
http://www.sxoc.com/vbb/showthread.php?t=212318&highlight=jez+bee


Of particular interest, this quote from the man himself:

I\'ve had a look at the beer rev limiters and if they work the way I think they do, then I\'m surprised any engine has survived.

All this talk of them only stopping the ignition is, IMO, rubbish. They only connect to the CAS signals and do not intercept any signal lines.

So theres only really one thing that can do: mess about with the CAS signal.

I\'m guessing here: I expect they monitor rpm on the fast pulse signal and then just ground the other CAS signal when a certain rpm is reached. This basically makes the ECU really confused and fire the injectors and plugs probably randomly.

If anyone has a beer limiter and is interested in helping me find out how they work then let me know and I\'ll get a scope on it

and

I reckon it\'ll just pulse one of the CAS signals to ground - making the ECU think the engine is spinning at a different rpm - this will cause injection and ignition events to be essentially random with actual ignition of the fuel occur all over the place

I can\'t find the thread with the final conclusion though

Either way, i\'m fcuked if i\'m fitting one to one of my cars.

IMHO, it\'s nothing but a JDM tyte flamer kit, as that\'s what most people use them for...

[MINTER]

although the flamers dont really give the loud "Shotgun" bangs which is pretty desirable,,bad for your exhaust etc..but looks and sounds the business as well as helping in launch?!

[rx jamie]

On the SR they are often cited as being responsible for sending bits of rocker arm around the engine...

that is true but only on the gtir version of the engine. the silvia type engines use hydraulic followers so they are ok to be used with the bee r limiter.
however the gtir uses rocker arms and shims. so a rocker can bounce off leaving a shim to jump off, and land in the sump. hence cracking the arm with the cam the next time the lobe comes round to the rocker. but this can happen even if you hit the stock rev limit on the gtir anyway.
a rocker stopper can help cure this.

my bee r does work on my gtir but, yes it is very strange and the rev counter doesnt like it. i have removed it as i didnt like it. and thats how it works on all engines by disrupting the two cas 1 degree and 180 degree signals. so its no different on the sr to any engine.  its more suited to \'cruises\'lol but mine did make .3 bar boost in neutral when i used it on the strip for launching.

[SiH]

that is true but only on the gtir version of the engine. the silvia type engines use hydraulic followers so they are ok to be used with the bee r limiter.
however the gtir uses rocker arms and shims. so a rocker can bounce off leaving a shim to jump off, and land in the sump. hence cracking the arm with the cam the next time the lobe comes round to the rocker. but this can happen even if you hit the stock rev limit on the gtir anyway.
a rocker stopper can help cure this.

my bee r does work on my gtir but, yes it is very strange and the rev counter doesnt like it. i have removed it as i didnt like it. and thats how it works on all engines by disrupting the two cas 1 degree and 180 degree signals. so its no different on the sr to any engine.  its more suited to \'cruises\'lol but mine did make .3 bar boost in neutral when i used it on the strip for launching.

They also destroy rockers on the SR on the S14/Silvia SR20 dude :nod: That\'s what the thread i linked to is about.

To me how it works jsut seems ridiculous - People jsut buy them for the visual effect. If you are going to do something like this, do it properly with an Omex rev limiter or RLTC/PFC pro(think this has it?)