NGK BPR7 or BPR6's? Sorry i'll delete it later on

[Race94]

Ok,
i just rebuilt a 6-bolt and i am swapping it into my 2g, i was using bpr7's on my last engine wich is basically stock.

This is my engine now:
1g 6-bolt block, removed B/S, 1g rods w/ 2g pistons, clevite bearings, new pumps etc.
14b turbo @16psi with a 255lph fuel pump, all bolt ons related to air(exhasut intake UICP etc.)

Should i go with bpr7's or bpr6's? why?

Thanks

 

[psychlow]

If the 7's were working well in your old setup (good cold starts, ran fine, no knock) use those. They're a step colder which is desirable for modded DSMs (prevents preignition by running a bit cooler).

 

[Generation1JeY]

it doesnt really make a difference, the 7s are more expensive and will probably last longer. i think theyre made for colder conditions so running high boost u would want the 7s, but at 16 psi u would be fine with the 6s.

 

[ryanman]

Just use the stock 6's. You don't have near enough mods to even need the 7's.

 

[Race94]

ok still undecided, uhm well i really don't know the difference of how the car worked since i changed them the second day i had it. I live in puerto rico so the weather is always hot.

Anyways there are my mods i usually run 16-18psi on my 14b and that's about it, would using the bpr7's or 6's cause any performance downside??

Thanks!

 

[psychlow]

ok still undecided, uhm well i really don't know the difference of how the car worked since i changed them the second day i had it. I live in puerto rico so the weather is always hot.

In that case, use the 7's.

The only reason you'd want 6's is if you lived in a climate that got cold in the winter. 7's are a little harder to get the car started in the winter when it's cold, but in your case, it's a non-issue.

It can make a difference of another PSI or so you can run on the stock sidemount without knocking issues.