Thank you guys
BPR6ES are on the way
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| Spark plugs with boost /nitrous https://slantsix.org/forum/viewtopic.php?t=61042 |
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| Author: | MOUSETRAP [ Wed Apr 19, 2017 10:04 pm ] |
| Post subject: | Spark plugs with boost /nitrous |
After all the posts I have read one of the most recommended sparkplugs is the NGK 3459 ZFR5N Then all my research on boosted or nitrous says mild boost 1 range cooler plug Lot of boost 2 ranges cooler plug I am not seeing a cooler plug listed for NGK ZFR5N so I contacted NGK Tech support and asked them what would be 1 cooler and 2 cooler plug starting at ZRF5N specs 1 cooler = NGK 4291 ZFR6F-11 2 cooler = NGK 5913 ZFR7F And -11 is .043 gap and would need to be adjusted per ignition and boost Any advise here as to ZFR5N with 7-8 lbs boost thanks |
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| Author: | Dart270 [ Thu Apr 20, 2017 3:26 am ] |
| Post subject: | |
I believe that is the extended reach plug. I would recommend NOT using that type of plug for a boosted application. Based on some experience with turbo cars (increased detonation and at least one blown head gasket and melted piston), these are not good with boost. I cannot say for sure as these (2) were not my cars, but I trust the folks who made the observations (Drakes and Sam Powell) and so that is enough for me to avoid them. I would get one of the following (or compatible equivalent): NGK GR6, GR7, BPR6ES Autolite 63 Champion RN9YC NGKs might be hard to find, but maybe their tech support could recommend a crossover? I like NGK plugs, but am running Autolite 63s in my turbo Dart now and they have been fine. That is what I could buy at a local parts store last time I wanted to try new plugs and was on the road. I have been running a 0.038-0.040" gap, but as I go up in boost I plan to close this up to 0.030-0.032". Hope this helps, Lou |
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| Author: | MOUSETRAP [ Thu Apr 20, 2017 6:24 pm ] |
| Post subject: | |
Thanks I had no luck looked all over Not seeing gr6 or gr7 any chance you know the full ngk# ? |
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| Author: | DusterIdiot [ Thu Apr 20, 2017 7:21 pm ] |
| Post subject: | Yep... |
Quote: Not seeing gr6 or gr7 any chance you know the full ngk# ?
Looks like NGK only has these in the platinum plugs now...Quote: BPR6ES
I know that these are sometimes used by guys running NA High Compression...
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| Author: | MOUSETRAP [ Fri Apr 21, 2017 3:24 am ] |
| Post subject: | |
Thank you guys BPR6ES are on the way
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| Author: | BUCKET 636 [ Wed Jun 21, 2017 12:46 pm ] |
| Post subject: | |
Would these plug recommendations apply to a supercharged slant running low PSI ? I am currently running the NGK ZFR5N plugs with a gap of 0.04" and HEI . |
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| Author: | terrylittlejohn [ Sat Aug 05, 2017 11:04 am ] |
| Post subject: | |
I have ran bpr7es lot # 5534 now I am using bpr9es lot #7788, I think they cross reference to champion rn63y and rn65y race plugs. with 10 to 14 psi I gap them at .025". seems too work. |
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| Author: | MadScientistMatt [ Wed Nov 06, 2019 8:29 am ] |
| Post subject: | Re: Spark plugs with boost /nitrous |
Did a bit of poking around that I thought I'd add to this thread: NGK BR7ES is a non-projected tip plug with the correct sizing to fit a slant six and a cold heat range. |
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