When I recently took my lim off(engine in the car lol) the apv's were really gunked up with oily/carbon residue. Is that blow back doing that, is it normal, it is side seals-- wtf???
On recip engines i know it would be the valves.
My primarys and secondarys look really, really good.
olddragger

 

you have a catch can? even if you have a catch can, is it still routed back into the intake?

 

yea have a catch can--no route back to the intake..
I have seen pics of other engines that have the same gunked up apv's.
why just the apv's?
olddragger

 

The APV does get pretty gunked-up, but so does the SSV (at least the couple I've seen).

 

Cause they are often closed...must be reversion carrying fuel/OMP residue in there and then it gets cooked to the walls

Funny thing is that my engine at 93K Km was really clean in the APV...likely from all the hot track time and the water cleaning I did every now and then

 

well i do track........... and i have a water meth system.........................
guess i am not hot or wet enough?
damn --did i say that?
OD

 

/\ yes you did - wash your mouth out

 

Silly question here, would there be a need to clean the ssv and apv? I've always cleaned the throttle body (and plenum chamber) on all the cars l've had, keeps the car running smoothly l believe.

EDIT: Anyone want to do a DIY if there is???

 

If too much carbon/sludge builds-up, it can seize the valves.
I've seen this occur on the SSV valve.

I thought about making one for the SSV since that can be removed without pulling the motor/intake manifold.
The APV is a different story, OD managed to get the APV valves out without removing the intake manifold or engine, but it required a lot of work (and patience) and I probably wouldn't recommend this as a DIY for the basic user.
Might be easier to just remove the intake manifold to reach the APV valves.

 

Uh --i think you meant that i gotr the lim off(and the apvs) without pulling the engine. And yep--it was work. If you dont have a little experience-- dont try it. You have to know a LOT of cuss words.
OD

 

DIY would be handy. I've seen the APV's and it looks like abit of work. Might "forget" about that one

Haha, cuss words l know! I don't think l'll try anything like that however. I've had plenty of expirence with V6's and V8's but this is my first rotary.. just learning as l go.

 

this has been a problem with auxiliary ports since 1983.

 

well if it hasnt been solved in 26 yrs--i probably wont do it this month.
OD

 

I bet that is why they have an electric motor to move them also.

Bumped your old thread looking for a pic of your LIM

 

u mean ever since they "introduce" the 6 port idea ?

 

try this http://www.vimeo.com/7093611

 

That is the SSV, not APV
But thanks for linking my video anyway.

 

Are you referring to these pics?

 

^Dang thats nasty

 

wow, can the lim be broken down any more then that?? do the tubes come out of the lim?

 

im taking this one sunday/monday, any tips that would save me some time would be great! did you have to lift on side of the motor to slid it out?

 

Yeah... you can remove the APV barrels.
You can see a tiny 8mm bolt securing each one to the rack gear.
Then you can remove the rack and pinion gear... but not much else other than that.

 

You'll have to remove the motor mounts to allow the motor to sway side to side.
The motor will need to be pushed all the way towards the driver's side to a unbolt the LIM.
Getting the tiny 8mm bolts, practically blinded, will be a PITA because the APV barrels need to be removed first.
I'm sure OD can tell you more from his personal experience... but it'll be easier to just remove the whole motor.

 

bad seals, bad seals
whatcha gonna do?
whatcha gonna do
when they fail on you?

https://web.pa.msu.edu/people/nila/wavs/badboys.wav

.

 

if i had to do it over again---i would unhook the ppf/driveshaft/exhaust/gasline.motor mounts and with a lift just swig the engine forward enought to get it straight off.
You shouldnt have to move much wiring? Only needs to come forward about 6 inches or so.

All renny street driven engines must have bad seals at some point.
I have never seen a clean set of apv barrels on an engine with over 20K.
OD