Spark Plugs
- Thread starter berg944
- Start date
Guest
New member
If you look in the manual it'll state all 944 engine types and what sparks to use, on the S2 there BOSCH WR5DC. BOSCH also do the four earth ones to can't remember the part number. I'll check the packet later on tonight. Seems to start better with the BOSCH Super Four.
Was thinking about changing the HT leads to soon.
Was thinking about changing the HT leads to soon.
Veerzigzag
New member
I fitted NGK iridium plugs, runs fine but not noticeably better than before - they just last longer. The old copper ones looked like a textbook picture (the "correct" one!) when I took them out - I have never seen such clean and perfectly-coloured plugs, never mind after 30k miles in a 150k miles engine. I also use Shell V-Power; ordinary 95 octane works OK, but the system is always backing off the power (retards the ignition) to prevent detonation. She runs better on 99-octane V-Power and does about 10% more mpg when using it.
Copperman05
New member
I run Denso Iridium plugs and I think they are great. Could feel a difference, not massive but worth the premium for the set over standard plugs. This video highlights the difference. Our large capacity cylinders I believe can benefit from the extra spark an iridium plug can provide. The only way you will find out is to try them..
Edd
Edd
Copperman05
New member
MarkK
Active member
I used NGK iridiums in my 944 racecar,changed dizzy cap and rotor arms alot aswell.I think whatever you fit fresh will be good and change them regularish for optimum performance and smooth running.Have a great race at Snetterton the wheels off rule is being strictly enforced there!
Have a great season.
Have a great season.
Thanks Colin & Mark, I think I'll stick to some new Bosch.
Thanks for the warning, Mark, Tom & I are usually pretty tidy, slow maybe but tidy. [
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Thanks for the warning, Mark, Tom & I are usually pretty tidy, slow maybe but tidy. [
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MarkK
Active member
No worries,i was there the other day on a trackday and had a chat with the guys at race control,a wheel on the Kerb is ok,the bit that i find tricky is where there is just a white line its so easy to slip over and time penalties that could ruin a hard fought race are just my idea of hell,to get a result and have it taken away...[&:][&:]i am going to be giving this alot of thought this year so as not to slip up.Have fun and a great season any race reports or piccys would be great to read and look at[]
]Veerzigzag
New member
A good tip that I picked up on this forum was to get the best quality plugs that you don't mind throwing away regularly.
All is well Tom has found a trade discount and is getting some new Bosch WR5DC+ for £2 a pop, so he's on the job for 8.
Yes I know what you mean Mark, the old Sears corner was always difficult as the apex kerb had big cowpat in it and if you clipped it the Caterham would always fly out to the rough concrete overrun on the exit.
But Caterhams get very nervous when at the limit, all mechanical grip and sod all weight, the 944 is much better mannered.
With the 944 if you're going to quick you can always lift a little, the Caterham swaps ends if even think about lifting.
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Yes I know what you mean Mark, the old Sears corner was always difficult as the apex kerb had big cowpat in it and if you clipped it the Caterham would always fly out to the rough concrete overrun on the exit.
But Caterhams get very nervous when at the limit, all mechanical grip and sod all weight, the 944 is much better mannered.
With the 944 if you're going to quick you can always lift a little, the Caterham swaps ends if even think about lifting.
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Super_Marv
New member
You only need four spark plugs for a 944 [
]I've used a few sets of Bosch WR5DC+ sparkplugs in my 968 with no problems. The best thing is, they're very cheap!!
scam75
Well-known member
+1 for Bosch. I use WR7DC+ on my turbo, went to change them last week after 8k miles and they were still in top notch order and car has never missed a beat. Threw the new ones back on the shelf for use at a later date! Used to change my NGK's every 5k miles or so and would get poor spark symptoms even before 5k miles with them. I will be using Bosch from now on.
Stuart
Stuart
WR5DC+ for my S2. Always used to be a pound a pop - are you sure that £2 each is a good price Jerry?
Vauxhall dealers sell a vaux-boxed plug (plug 15 I think) which is a WR5DC+ - even branded 'Bosch' with the part number once you have it outside the box. I think these are still about a pound each.
Changing plugs often is a good recipe for minimal ignition problems. 5k miles is probably shorter than necessary but it's a sensible interval for me.
Oli.
Vauxhall dealers sell a vaux-boxed plug (plug 15 I think) which is a WR5DC+ - even branded 'Bosch' with the part number once you have it outside the box. I think these are still about a pound each.
Changing plugs often is a good recipe for minimal ignition problems. 5k miles is probably shorter than necessary but it's a sensible interval for me.
Oli.
Well Oli, Halfrauds want £22 for 4 Eurocarparts £8.64 + VAT so Tom's trade supplier via his work sounds about OKish.
I think the WR5DC+ is the cooler plug from the WR7DC+ so being a motorsport application will require the cooler WR5DC+
So that's it really, haven't got too much time driving down to Snetterton Friday 11th.
BTW you coming to Brands this year? It's 31st May.
Tickets available FOC.
I think the WR5DC+ is the cooler plug from the WR7DC+ so being a motorsport application will require the cooler WR5DC+
So that's it really, haven't got too much time driving down to Snetterton Friday 11th.
BTW you coming to Brands this year? It's 31st May.
Tickets available FOC.
Gerry,
Hmmmm, prices have gone up of late - I'm probably remembering prices from a number of years ago now. And yes, I do remember Halfords being very very expensive for spark plugs back when I had my old Golf. However Carparts4less still do them for a bit under £2 (with free delivery) if Tom's trade supplier doesn't come up with the goods - link here:
http://www.carparts4less.co.uk/cp4l/c/Porsche_944_3.0_1989/p/car-parts/car-service-parts/regular-service/spark-plugs/?408771840&1&00e3ed649910cd57bea15244840140aefa7befac&000301
Yes, the 5 is a cooler plug than the 7. There's a good explanation of the codes (in German) on the Bosch website here:
http://rb-aa.bosch.com/aa-uk/en/sparkplugs/start/media/zuendkerzen_typformeln.pdf
If you're offering Tickets for Brands again then the answer is a very firm 'Yes, thanks'! I've put it in the diary. Do I get to help with pit stops again?
Oli.
Hmmmm, prices have gone up of late - I'm probably remembering prices from a number of years ago now. And yes, I do remember Halfords being very very expensive for spark plugs back when I had my old Golf. However Carparts4less still do them for a bit under £2 (with free delivery) if Tom's trade supplier doesn't come up with the goods - link here:
http://www.carparts4less.co.uk/cp4l/c/Porsche_944_3.0_1989/p/car-parts/car-service-parts/regular-service/spark-plugs/?408771840&1&00e3ed649910cd57bea15244840140aefa7befac&000301
Yes, the 5 is a cooler plug than the 7. There's a good explanation of the codes (in German) on the Bosch website here:
http://rb-aa.bosch.com/aa-uk/en/sparkplugs/start/media/zuendkerzen_typformeln.pdf
If you're offering Tickets for Brands again then the answer is a very firm 'Yes, thanks'! I've put it in the diary. Do I get to help with pit stops again?
Oli.
Thanks Oli, if you're available for team duty then yes please, you know the drill.
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