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timstar92404 · Joined: 22 Sep 2004 Posts: 2075 Location: richmond BC

okay from my last thread I already stated that I went to the mechanic to do my timing and fuel mixture and he charged me 90 dollars for that and he screwed it up really badly and my car barely ran so then I brought it back today and it runs alright but the car still doesn't sound like it did before I brought it in to the mechanic, it is noiser now and the exhaust is louder....

he says there are no holes inthe exhaust.......

but kinof strange how setting the timing and mixture would caust he exhaust to get louder.

the mechanic now says your exhuast has those popping sounds etc because you need a new intake manifold gasket and a bunch of other gaskets I think on the exhuast.

I asked him how he knows this and he says he knows from experience.....

I don't know......

he says I will need the manifold gasket etc to go for the smog test.

he says air is probably leaking in and causing my car too run too lean.

he said after he replaces those the exhaust will sound better and the performance will also be better.

my car also suddenly accerates it has always done this but I feel it more now after he has done the tuneup...

what do you guys think should i just let him do this repair ..... he says the gaskets cost 19 dollars each dont' know how many he said need replacement and the rest is labour...

he also says I need a new starter because mine just "clicks" sometimes.

I'm just thinking of leaving the starter for now and replacing it myself later on.
_________________
78 924 sold.
85.5 944

Ozzie · Posted: Tue Jun 21, 2005 5:50 pm Post subject:

Paragon have an intake manifold gasket for $3.50.
I think you need 4.
Part no? I think it is 047.133.227
It is an easy replacement even for the inexperienced.

The exhaust mainifold is harder only because of its position.
Paragon don't list them but they are about $5 each. You need 4.
Part no. 048.129.589.A
You may want a downpipe gasket as well.
Part no 477.253.115.E
About $10.

Simple enough repairs you could tackle yourself.
_________________
Porsche 924 1984 (UK import) NA
Its AUTO and its BLACK
Montego Black on black/red
Engineer of Electro/Mechanical Systems Maintenance

timstar92404 · Joined: 22 Sep 2004 Posts: 2075 Location: richmond BC

how hard is it to replace the intak manifold gasket.

I have to ask him what other ones need replacement.....

yeah that sound too expensive to replace gaskets.

he said it takes time to remoove the intake manifold etc.
_________________
78 924 sold.
85.5 944

Ozzie · Posted: Tue Jun 21, 2005 6:00 pm Post subject:

I haven't done it myself but I would just disconnect the air pipes to the throttle body, accelerator cable, wiring and cold start valve fuel line.
Unbolt and remove manifold,
Clean off old gasket.
Instal being reverse.
No adjustments need to be made to anything.
The haynes may describe it in more detail.
_________________
Porsche 924 1984 (UK import) NA
Its AUTO and its BLACK
Montego Black on black/red
Engineer of Electro/Mechanical Systems Maintenance

timstar92404 · Joined: 22 Sep 2004 Posts: 2075 Location: richmond BC

alright I'll look into haynes and check out the porsche parts place to see how much it cost. Not sure if haynes would have a part on replacing this specific gasket....

not sure what other gaskets he said need replacing, I can't do the exhuast gaskets for sure.

is the intake manifold just one gasket?

or I can just pay the money and get he mechanic to do it......

It will take me really long ot do it....
_________________
78 924 sold.
85.5 944

Ozzie · Posted: Tue Jun 21, 2005 6:29 pm Post subject:

Haynes would tell you how to remove the manifold etc.
Give you heaps of experience in the process.
Shouldn't take more than a few hours or take your time over a weekend.

_________________
Porsche 924 1984 (UK import) NA
Its AUTO and its BLACK
Montego Black on black/red
Engineer of Electro/Mechanical Systems Maintenance

Ozzie · Posted: Tue Jun 21, 2005 6:32 pm Post subject:

according to PET it is one gasket
part no
477 133 227
_________________
Porsche 924 1984 (UK import) NA
Its AUTO and its BLACK
Montego Black on black/red
Engineer of Electro/Mechanical Systems Maintenance

leadfoot · Posted: Tue Jun 21, 2005 6:45 pm Post subject:

The intake manifold gasket is a one piece item, but first check that you have a leak, no point in taking it off if you dont have to.
You can spray carburetor cleaner around the intake manifold when the car is idling, a change in the idle becoming smoother will verify that you have a leak.
BTW taking the manifold off is not that hard, it just is fiddely as there are a few other components that need to come off to gain access. But if you were to attemp doing it yourself it would be a good learning curve. It is one of the first jobs I learned to do.
You would need a set of sockets a flat plastic scraper and a flat head screwdriver tool wise, but get some liquid gasket to apply to the gaskets for better sealing. You can also use the liquid gasket on the PCV crossover pipe and the rubber boots that attach to the fuel dissy and throttle body. Just do it all when the car is cold as there are two fuel lines for the WUR that need to be disconnected. They will dribble a little when you first remove the bolts but wrap them in a little plastic and elevate them to stop fuel escaping.
See if doing this this cures your rough running problem.
Job takes about 1 hour if you are familiar, 2 hours if you aren't and give or take an hour to clean things up.
Change the intake manifold bolts at the same time as they tend to weaken with the heat the engine puts out. Don't change the studs but change the nuts for the studs.
If you have a set of allen keys you can take off the throttle body and change its gasket and remove the cold start valve and apply some liquid gasket for better sealing.
Leadfoot
_________________
1981 ROW 924 Turbo -
carbon fiber GT mish mash
LS1 conversion in progress...

john h · Posted: Tue Jun 21, 2005 9:53 pm Post subject:

The intake manifold is real easy to take off.
Should be off in under 30 minutes.
Remove rubber belows from Fuel Injection unit, under throttle cable, unplug any electrical leads.
then under the fuel lines to the warm up regultor leave the lines to the 4 main injectors.
Then undo the 8 bolts holding the manifold on (13 mm ring spanner) and it should just almost fall off. (there is also a bracket holding the manifold onto the block - this is on the under side and is by the oil dipstick

Note there will be a few other vacuum lines but if your only changing a gasket then you just have to remove these as you can then move the manifold away from the motor a little way and slip the new gasket in.

Exhaust not so easy but at least you don't have steering shaft in the way like those of us who have the steering wheel on the right (correct) side of the car
_________________
Remember a Porsche is not just for Christmas,

if you take it to pieces slowly it can provide anguish all year long!