Found TSB for Load surging 911 turbo
 

Wish I had a scanner for this but anyway
Subject:Part -load surging
Model 911 turbo
group 25
part identifier 2587
number 77-03
engine surging at part throttle under load (similar to ignition misfiring) can be caused by a leaking intake minifold gasket.(total of 12 gaskets go above and below intermediate flange)
replace gasket or gaskets as required
part required:gasket part number 930 110 197 01
note: there are 12 identical gaskets-6 between intake manifold and intermediate flanges; 6 between intermidiate flanges and heads. any of these,if leaking ,could cause erratic engine performance.
Hope this my problem! and hope this clears up your problems!
Pete

Leaking phenolic blocks can cause a multitude of symptoms.
Check/tighten each injector block before going to the trouble of changing gaskets.

do they crack or get warped?

I recently purchased a carrera 3.2 with a bad missfire and it turned out to be inlet manifold gaskets...
This could be your problem however as advised above i would try and re-torque first and maybe test for leaks at each one before you go ahead and strip down!!
Link below is for 3.2 carrera engine.. Similar set up in the 930 apart from the injectors are located also in the blocks.
I believe they can crack,,not so sure they would warp though.

http://forums.pelicanparts.com/porsche-911-technical-forum/429121-1988-3-2-carrera-engine-bad-missfire-help.html

had some small cracks but nothing real bad, the valves in these heads are huge. no gaskets wiped and manifold was tight

what is this nonsense, doesnt look stockhttp://forums.pelicanparts.com/uploa...1229879538.jpg

Maybe some ancient boost controler?

should i delete this stuff

Yes, the phenolic blocks regularly crack with age/heat. If they are not loose and you have to tear it down then inspect each block for cracks larger than the typical small spider viens.

they do have some fractures in like 3 of them will this cause a problem under low boost? I will send pics after I clean them up. manifold and fuel meter in trunk to take to work for clean up tommorrow.

Can someone trace his IP and ban him?

Yeah you would possibly get a missfire on low boost,light throttle etc if the fractures are all the way through!

ok im gonna replace all blocks and gaskets . talked w/ a buddy of mine (retired porsche mechanic) and hes pretty good w/ 3.3turbos and said its probably in the fuel head . so its on its way to Jaytan not the other screwball w/ the additude. yah that guys post are annoying ,free advertisements for him.

Please do not quote their links!

Banned him.

His IP address is: 58.17.145.77

Nathan,
Got a little time on your hands? :)
I just noticed this thread is about a year old. Are the moderators going through the archives deleting spammers?

Good job Nathan,, and Dave is right,, the car must be away for the winter huh ? hahaha

Chuck reported the spam so I deleted it.

I haven't driven my 911 carrera for over a week now :(

Will have to try and get the 930 back together soon...

Thanks for reporting it Chuck.