NGK PFR7B or PFR8B???
#1
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Hi All,
I read this:
"My PFR7's lasted no time at all -having put in racing 8's the advance has actually been turned up as a result..... cheap MOD!!"
At what time to You guys thing it will be better to change to 8īs over the seven?.
I hope soon to get a 06/20G and i was wondering if itīs better to run 8īs to get advance or more power,or do you thing that the 7īs are fine.
I hope to get around 370-380 hp without octanebooster with this turbo.
All info would be great
Skassa
I read this:
"My PFR7's lasted no time at all -having put in racing 8's the advance has actually been turned up as a result..... cheap MOD!!"
At what time to You guys thing it will be better to change to 8īs over the seven?.
I hope soon to get a 06/20G and i was wondering if itīs better to run 8īs to get advance or more power,or do you thing that the 7īs are fine.
I hope to get around 370-380 hp without octanebooster with this turbo.
All info would be great
Skassa
#2
My comment
At the sort of power your running you may be ok with the 7's - that was just my experience and results along with a few other owners I know who are now on Racing 8's
At the sort of power your running you may be ok with the 7's - that was just my experience and results along with a few other owners I know who are now on Racing 8's
#4
All you are doing is running a cooler temp plug, which may give some pre ignition problems if the fuel octane is too high.
Cold starts nay be better, but should be fun if engine gets really hot.
Cold starts nay be better, but should be fun if engine gets really hot.
#5
The plugs get rid of the pre-ignition problems that you have with the likes of the non-race plugs like PFR7's - they dont increase them
Cold start has not been a problem at all. Then again I have a fully mappable ECU so the map can be tweaked for the slightly colder plugs
Didnt want the end of the plug falling off into the chamber - didnt that happen to either Bob Rawle or Harvey
Regarding Boost - I was running at 1.8 Bar - now I'm running at 1.5 Bar - the spark plugs made a big difference on the mapping session with Bob
Cold start has not been a problem at all. Then again I have a fully mappable ECU so the map can be tweaked for the slightly colder plugs
Didnt want the end of the plug falling off into the chamber - didnt that happen to either Bob Rawle or Harvey
Regarding Boost - I was running at 1.8 Bar - now I'm running at 1.5 Bar - the spark plugs made a big difference on the mapping session with Bob
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I too, am now on NGK R7235-8 from www.spark-plugs.co.uk as I too had a problem with the Iridium plugs after 6k miles.
I have a suspicion that when adjusting the gap, it may be that the "tool" fouls on the centre ceramic insulation causing a tiny crack which then deteriorates under stress until it cracks right across, allowing the cylindrical ceramic insulator to move to the gap, (which was the result in my failed plug) which caused massive det under any boost at all.
Stan
[Edited by StanS - 11/19/2003 7:28:59 PM]
I have a suspicion that when adjusting the gap, it may be that the "tool" fouls on the centre ceramic insulation causing a tiny crack which then deteriorates under stress until it cracks right across, allowing the cylindrical ceramic insulator to move to the gap, (which was the result in my failed plug) which caused massive det under any boost at all.
Stan
[Edited by StanS - 11/19/2003 7:28:59 PM]
#12
best of luck - I had to get the 7119's at Ģ144 as the 7235's were out of stock in the UK - they should have some now though!!
Stan - what power is your engine kicking out now after the debacle at Well Lane?
Stan - what power is your engine kicking out now after the debacle at Well Lane?
#14
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Hmm,
Both the R7119-8 and the R7235-8 can not be purchased in Denmark,
So i think i will start with the PRF7B,as i have a new set in stock.
Then i must see how it goes or how long they will last.
Skassa
Both the R7119-8 and the R7235-8 can not be purchased in Denmark,
So i think i will start with the PRF7B,as i have a new set in stock.
Then i must see how it goes or how long they will last.
Skassa
#15
I always found that colder running plugs were less likely to cause pre-ignition since the heat conducts away from the points more quickly. Of course this also makes them more likely to oil or soot up.
Les
Les
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I would have said 7s for 370-380.
Rob ran 7s on his and that was at 410bhp and that was only 1.5 bar. He was actually running 1.8 round town but for some reason it would get rolling roaded on 1.8
Rob ran 7s on his and that was at 410bhp and that was only 1.5 bar. He was actually running 1.8 round town but for some reason it would get rolling roaded on 1.8
#17
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Location: Leeds - It was 562.4bhp@28psi on Optimax, How much closer to 600 with race fuel and a bigger turbo?
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I would disagree with the above...
but its IMHO.
seek advice of the person who is mapping your car..
I wouldnt really go above 350 with 7's
but its IMHO.
seek advice of the person who is mapping your car..
I wouldnt really go above 350 with 7's
#20
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Location: Leeds - It was 562.4bhp@28psi on Optimax, How much closer to 600 with race fuel and a bigger turbo?
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each to their own..
"Daily driver" getting fed up of hearing that
whats a daily driver? one that doesnt break gearboxes?
Nah in my book a daily driver is one that you only ever open the bonnet when theres a problem..
our 307HDI is a daily driver..
David
"Daily driver" getting fed up of hearing that
whats a daily driver? one that doesnt break gearboxes?
Nah in my book a daily driver is one that you only ever open the bonnet when theres a problem..
our 307HDI is a daily driver..
David
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Hello Dave
Daily Driver.
To me.
Everyones different.
Can jump in. Starts OK. Idles fine.
Trundle to work.
Take bairn to child minders/nursery.
Can turn off A/B. roads and be XS. fun thru backroads.
Be rest assured MY car looks anything but.
Yet. It can be used, any time.
All time out has been due to application of Mods.
Other than that did 20,000 miles last Yr.
Will be lot less this Yr.
Have never Tracked or 1/4rd (No intension)
Don't think they were built for that!
Steve.
Daily Driver.
To me.
Everyones different.
Can jump in. Starts OK. Idles fine.
Trundle to work.
Take bairn to child minders/nursery.
Can turn off A/B. roads and be XS. fun thru backroads.
Be rest assured MY car looks anything but.
Yet. It can be used, any time.
All time out has been due to application of Mods.
Other than that did 20,000 miles last Yr.
Will be lot less this Yr.
Have never Tracked or 1/4rd (No intension)
Don't think they were built for that!
Steve.
#23
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440bhp on 7's Weekend driver Tried HKS Iridium 35i's but had misfires at full boost within 1000 miles so refitted my old 7's again
SG's car is a daily driver. It's a kitten to drive off boost despite 400+bhp.
Andy
ps Steve - Have you got rid of that IHI turbo sticker yet
SG's car is a daily driver. It's a kitten to drive off boost despite 400+bhp.
Andy
ps Steve - Have you got rid of that IHI turbo sticker yet
#24
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Top marks Andy.
Can't beat that ol' TD 05 /06 20g.
Bairn swears by it.
'fact. Sure , he's grown 2". Since fittin'a fortnight ago.LOL!
Still have an IHI Turbo Andy ('t's in a box marked "FOR SALE").
Car was Beaut' Today!
Steve.
Can't beat that ol' TD 05 /06 20g.
Bairn swears by it.
'fact. Sure , he's grown 2". Since fittin'a fortnight ago.LOL!
Still have an IHI Turbo Andy ('t's in a box marked "FOR SALE").
Car was Beaut' Today!
Steve.
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