BKR7E -vs- PFR6B-11

[NismoPC]

Ok here is the question. If using copper NGK plugs in place of the platinum NGKs in the US spec SR20DE is this the cross reference I should be using:

PFR6B-11 (gap .035 - .044)
to
BKR7E (gap .031 - .035)

OR should I be using the

BKR7E-11 (gap .031 - .035)

OR

What copper NGK plug can be used in place of the platinum NGKs.

Thanks in advance!

[P10DET]

Originally posted by NismoPC
Ok here is the question. If using copper NGK plugs in place of the platinum NGKs in the US spec SR20DE is this the cross reference I should be using:

PFR6B-11 (gap .035 - .044)
to
BKR7E (gap .031 - .035)

OR should I be using the

BKR7E-11 (gap .031 - .035)

OR

What copper NGK plug can be used in place of the platinum NGKs.

Thanks in advance!

OK......

First you are mixing heat ranges. The 6 and the 7 are heat ranges. When swapping from plats to copper, keep the same heat range unless you are simultaneously changing something else that requires you to change heat ranges.

The last number is the the gap in milimeters with on decimal place assumed, i.e. 11= 1.1mm gap, or 0.039-0.043". That said, the FSM recommends a gap of 0.8-0.9mm or 0.031-0.035" for the copper plugs. So, you would not want the -11 plugs in copper. If there is a number at the end, you would want a -9.

All of that said, the FSM recommends:

BKR6E (copper) or
PFR6B-11 (plats)

[NismoPC]

Originally posted by P10DET
All of that said, the FSM recommends:

BKR6E (copper) or
PFR6B-11 (plats)

Thanks George.

I was showing the different heat ranges was because I searched all the posts here and on www.sr20deforum.com and it seemed like the ones who were switching were usually running NOS or Turbo'd. I am of course NA for now, but they were always showing the PFR6B-11 to BKR7E swaps. So, with that said...

...got a little lost and since I didn't have an FSM to go by, I hoped somone like yourself would give me some direction.

I actually have a box of 4 of the BKR6E-11's sitting in front of me right now. Will be exchanging them for the BKR6E's tomorrow.

Reason for question: I have Autolites in there now and well, enough said. And figured the coppers would get me by for $6.36 until the platinums arrive. Or atleast for 30,000 miles.

Any reason to why the auto parts stores do not cross reference the coppers with the platinums in the SR20's. I thought that was a little strange. Only show OEM recommended which is the plats. Atleast Advance Auto and Pep Boys did.

[P10DET]

Originally posted by NismoPC
Any reason to why the auto parts stores do not cross reference the coppers with the platinums in the SR20's. I thought that was a little strange. Only show OEM recommended which is the plats. Atleast Advance Auto and Pep Boys did.

Well, interestingly enough, the NGK Master Catalog lists only the plats for the G20 and only the copper for the SE-R.

I don't know if the fault lies with NGK or Nissan. There are only a very small handful of companies providing cataloging for aftermarket replacement parts. They all use the same data to prepare their catalogs basically. So, if the info they get is wrong, they are all wrong.

I have no idea why they don't have a general plat to copper cross reference though.

[jprimera]

Hi I use the bkr6e ,they work fine .changing every 3000miles,they are very cheap 6 dollars,(Chile)all package.(4)

[NismoPC]

Originally posted by jprimera
Hi I use the bkr6e ,they work fine .changing every 3000miles,they are very cheap 6 dollars,(Chile)all package.(4)

Thanks!
Just went today at lunchtime and exchanged the BKR6E-11's for the BKR6E's.

Just some more info:
I also found out today that the BKR6E-11's are for the GA16.