The Definitive S2 Spark Plug Thread

[dubmeister]

Here's something quoted word for word from a Bosch resource I have on the subject of tightening plugs..... Firstly it confirms the torque setting for new plugs in an alloy head to be 20-30Nm... And we know that 30Nm is where they need to be, however - what do you do if you havent got a torque wrench to hand. Here's the official word on that --->

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In practice, spark plugs are often fitted without a torque wrench. Consequently, they are usually overtightened. Bosch therefore recommends the following rule=of-thumb procedure:

1. Screw the spark plug by hand into the clean thread as far as it will go. Then apply the spark plug wrench and observe the following procedure (for our plugs with captive gasket and flat seat).

New plugs - Using the wrench, turn the new spark plug until first resistance is felt and then turn the wrench 90 degrees (a quarter circle)

Used plugs - Turn these 30 degrees after resistance is first felt with the plug wrench.


2. When tightening or loosening the spark plug, the wrench should not be held at an angle - the insulator will otherwise be broken off or pushed to the side and the spark plug destroyed.

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Spot on!!!

I never use a torque wrench on plugs- had too many break or damage the head, even after the torque wrench has been calibrated!!!
and always hand tight, then finish off with a 6" 3/8 breaker bar..

Always found Bosch plugs to work loose over time, poor gasket design as stated earlier- I Always use the NGK equivalent (NGK PFR7B for the 3b/aby/adu)

But each to their own.....

[S2central.net]

COstan - please try them and report back your findings.... They are cheap after all.

[CoCaine]

Did someone got Bosch F6DTC? Some guy told me it's also good for s2.
I would go for F5DPOR but is so difficult to get them in Romania,only from Bosch and I need to wait 2 weeks to get them from Germany
I've founded F6DTC much cheaper than F5DPOR and delivery time is 2 days,but need to be sure that my car will run good with them.
Anybody?
Thanks,
Costan.

[blues n 2s]

i was thinkin of using denso iridium power platinum any thoughts anybody?seems APITA to tighten plugs up every so often,can only just remember my name sometimes

[Nik0las]

What about NGK BKR7EIX ?

[S2central.net]

Here's something quoted word for word from a Bosch resource I have on the subject of tightening plugs..... Firstly it confirms the torque setting for new plugs in an alloy head to be 20-30Nm... And we know that 30Nm is where they need to be, however - what do you do if you havent got a torque wrench to hand. Here's the official word on that --->

-----------------------------------------------

In practice, spark plugs are often fitted without a torque wrench. Consequently, they are usually overtightened. Bosch therefore recommends the following rule=of-thumb procedure:

1. Screw the spark plug by hand into the clean thread as far as it will go. Then apply the spark plug wrench and observe the following procedure (for our plugs with captive gasket and flat seat).

New plugs - Using the wrench, turn the new spark plug until first resistance is felt and then turn the wrench 90 degrees (a quarter circle)

Used plugs - Turn these 30 degrees after resistance is first felt with the plug wrench.


2. When tightening or loosening the spark plug, the wrench should not be held at an angle - the insulator will otherwise be broken off or pushed to the side and the spark plug destroyed.

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[M_GORDON]

I just see this
http://www.oscaro.es/lista.asp?ID_GE...OSC_LEVELS=824

here, we can buy differents sparks

[M_GORDON]

Bravo!

My meca mount me ones Champion spark and in low vel. into the city, the car was a tractor JAJAJAJAJA. The rpms goes down and up everytime!

Rocco has one problem with the repro when the car pass from 1.1bar and his problem was the SPARK!
He have 2 spark with 2 electrodes, other 2 with 4 and only one the Bosch F5DP0R. When, he change all Sparks and the turbo runs to 1,7bar

[S2central.net]

An Audi dealer, VAGparts, Bosch outlet, GSF, ECP, quattro corner ...

[Heat Seeking Missile]

Good work Steve

Any idea where these magical plugs can be obtained from?

Mark

[Audi_CQ]

Uses std F5DP0R in my 2.5 both daily use and on track days without a problem. 500+++ hp dep. on boost

[steve1234]

Thanks for the heads up steve, you learn something everyday. all the best steve D.

[GT500]

[Jamo]

Its a trait prone to only the Bosch spark plug in my experience. When i used to run the NGK plugs in my S2, i NEVER had one come loose. Since changin over to Bosch plugs (NGK's dont like the high boost), they work loose. The washer is the fault of the design. They are junk. A torque is all well and good, but if you change plugs every day, you learn to "feel" when a plug is tight

There are a few threads about

[Rusty]

Moi

Anyhoo, back to sparky plugs.