Spark plug info

[Audax]

Aaah, I'd just their recommended and not bother with an "upgrade" as they usually turn out to not be. The BCPR7ES-11 are not the suggested plug for your car but will be fine, given how cheap they are just replace them every year.

[SwansSaab]

Thanks Quino ... Ive got to sort gearbox soon on her she`s getting more and more jumpy now so want to do it before it fails on me, Ive emailed Saabtech in Stevenage asking for a quote as they seem to have a good rep

[TomPaine]

Ive just ordered the 7es-11`s  from ebay for £8   as someone on this thread said they where for the Aero HOTs  .. I hope they are right

As quino says, the expensive (c£10 each) PFR6H-10 are the spec for the Aero.

[paolo]

Don't know which bit of their site you're looking at but their pdf catalogue says PFR6H-10 for the 9-5 Aero which is what Saab say too so I'd use them *unless* Hirsch say to use a different plug.

Hirsch say Do Not use the platinum 6's as per standard aero. The plug for this tune are the cheaply 7es gapped at 1.0.


Had plenty of email exchanges with them in the past!!

[TomPaine]

Hirsch say Do Not use the platinum 6's as per standard aero. The plug for this tune are the cheaply 7es gapped at 1.0.

Sure - I was just clarifying what the correct plug for the stock Aero is, in response to the quoted post which implied otherwise.

[SwansSaab]

Don't know which bit of their site you're looking at but their pdf catalogue says PFR6H-10 for the 9-5 Aero which is what Saab say too so I'd use them *unless* Hirsch say to use a different plug.

Hirsch say Do Not use the platinum 6's as per standard aero. The plug for this tune are the cheaply 7es gapped at 1.0.


Had plenty of email exchanges with them in the past!!

Ah nuts .. just ordered the 6H- 10`s  which where £30.00   are you sure the above is correct Paulo

[sgould]

Dealer still uses the PFR6H-10 on my current Hirsched Aero.

Whichever you have, I wouldn't worry too much.  The PFR6H are platinum coated for longer life.  The other plugs are fine, you may just need to change them more frequently.

[phoenix]

You can normally pick up the platinum ones for around £25 a set on eBay- here's some of the current listings:

http://www.ebay.co.uk/sch/i.html?_nkw=PFR6H-10

The electrode tip is actually solid platinum, not just coated. It's also a different shape and size to the BCPR7:

PFR6H-10


BCPR7ES-11

[SwansSaab]

Dealer still uses the PFR6H-10 on my current Hirsched Aero.

Whichever you have, I wouldn't worry too much.  The PFR6H are platinum coated for longer life.  The other plugs are fine, you may just need to change them more frequently.

  on a side note I am a very happy man today as I just came off the phone with Saabtech in Stevenage, they can uprate my autobox it will be £2000 but when I asked how much NM of torque I could put through the uprated box he said "put it like this .. you wont be able to build an engine with enough HP to get to its limit"   

Sounds like they up-rate all the internals and fit a bigger oil cooler


Regular re conned box fitted was £750 which I thought was reasonable

[paolo]

I asked hirsch 3 times to check, each time it was use 7 es and not plats.
P

[SwansSaab]

I put the es 7`s in man what a difference

[Grentarc]

Living is Oz with a tuned LPT I decided to change to 7es plugs,  made quite a difference - cooler plugs reducing onset of knock etc...

[sean treacy]

hi all,recently i had my my02 9-5 aero tuned and after reading this forum i am still unsure which is the correct plug for a tuned aero.before the tune i was usins the pfr,s and left them in with the tune and car runs great.after reading this topic i then tried the 7es 11,s as this thread seems to suggest and car again runs great,i am just looking for some clarity as to is there a specific plug for a tuned aero over a stock one.car seems to run the same whatever plugs i use.

[sgould]

My Hirsch Aero with 300hp runs on the standard platinum plug.

But I've heard two things, and I can't confirm the truth either way....

1. The only reason that the platinum plugs were used was to keep the service interval of the Aero the same as the other models.

2. That if you change the plugs more often, the normal plugs used in the other cars are OK.  I think Maptun use these.

[sean treacy]

thanks sgould,there seems to be no hard and fast rule on this one.i think i will stick with the non platinums for now as i do change them often and car seems to run well with these.