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Re: 265 Hemi to efi
Posted: Wed Nov 20, 2019 11:22 am
by Holden202T
i cant remember the plug number now but i use a br7efs maybe ? its a non projected tip .... but probably not recommended if your streeting it.
Re: 265 Hemi to efi
Posted: Wed Nov 20, 2019 12:55 pm
by Gampy
For the street I would go with bpr7es ... Same plug as the bp5es except Resisted and 2 heat ranges colder.
Off road, bp7es ... Same plug except 2 heat ranges colder.
Re: 265 Hemi to efi
Posted: Wed Nov 20, 2019 6:55 pm
by heff0018
Charlescrown wrote:Agree with everyone. Just a question. Was the detonation damage to the head gasket on the opposite side to the spark plug?
Same side as the spark plug
Re: 265 Hemi to efi
Posted: Wed Nov 20, 2019 6:57 pm
by heff0018
Holden202T wrote:i cant remember the plug number now but i use a br7efs maybe ? its a non projected tip .... but probably not recommended if your streeting it.
I don’t drive it much on the street so not a problem
Re: 265 Hemi to efi
Posted: Wed Nov 20, 2019 9:50 pm
by Gampy
Just to be clear, prevent bad things and wasted money.
efs is not the same body as the es, it is a tapered seat plug ... the es is a gasket seat.
f = tapered seat.
Re: 265 Hemi to efi
Posted: Thu Nov 21, 2019 6:00 am
by heff0018
Re: 265 Hemi to efi
Posted: Thu Nov 21, 2019 9:52 am
by Gampy
Sure hope you're yanking my chain, if not ...
Your money, Your heads, IMO Purchasing those plugs would be a fail ...
They are a different body style from what you
posted in this image.
The plugs you posted in that image are of Gasket Seat style.
The BR7EF plug you posted a link to on modularheadshop.com is of a Tapered Seat style.
They are NOT interchangeable.
Unless of course it had the wrong style in it in the first place ... I do not know what style your heads use, Tapered Seat or Gasket Seat.
Re: 265 Hemi to efi
Posted: Thu Nov 21, 2019 2:24 pm
by Charlescrown
I use BP7ES in both street and track cars with no issues with RFI. The std Valiant is a BP5ES which uses a gasket and yes those BPR7EF won't fit. Looking at the damage to the plug I think it's pre-ignition not detonation that eroded the plug. Are you tightening them tight enough so they can transfer the heat from the plug properly?
Oh and if I'm correct it will blow the asre out of your engine like a hand grenade.
Re: 265 Hemi to efi
Posted: Thu Nov 21, 2019 6:47 pm
by heff0018
Thanks all, yes those were the wrong plugs. I need the gasket type es.
Re: 265 Hemi to efi
Posted: Tue Dec 03, 2019 7:41 pm
by heff0018
Finally got the skin back on the tailgate frame. Hopefully I will be able to get a full skim coat of filler on this weekend