Spark plugs

[Moggie47]

Hi, need to change plugs on my 82 gsx750 katana sz, took out NGK D7ea,s and have NGK D 8ea,s to go
Back in. Which are the correct plugs as I have online information saying both are correct? Thanks.

[Kryten]

Had a look at my Suzuki manual.

Either NGK D8EA for E-01, 24, 25, 30, 34

Or DR8ES for the others!

So if you have a Germany, Ireland, Croatia, Dunno, Bulgaria market bike then the book says D8EA.

But to be honest it probably wont make enough difference to worry about.

I would bung in the ‘8 as it’s the stated heat range.

[fossie]

I don't know why it's got 7's in ...has it been rejetted....for somewhere other than our climate?

[Kryten]

I don't know why it's got 7's in ...has it been rejetted....for somewhere other than our climate?

After I posted that, I looked at the NGK place.

They suggest ‘7 heat range. Just to confoose uz

But I’d still throw some ‘8s at it. Just like Skruffy Kat is running.

[fossie]

The NGK catalogue on line isn't usually UK , It's Yank ( spelling Timothy) .
Used to get issues when I worked in parts dept with people looking on line then ordering ....then complain about poor running , like it was our fault.

Personally I have always used DR8 ES L as it is a superceed to EA and easier to come by.

[Moggie47]

Thanks, I will put the “8,s in “. Bikes running standard air box etc so not known why it had D7ea in.
Ps was Italian import.

[katmarch]

I run the DR8EIX

Steve

[sparki]

was Italian import.

so engine number starts with R701 then? if it does its a nicer 750 than a GS75, better cams in it

[Moggie47]

Hi, yes the engine number is R701, and it’s running well with the d8eas in.
Thanks