Zd29s vs Zd9s...for the inquiring mind...

[ttman4]

I asked above.....Do the 80034 plugs go ahead and seat well in our 7.3's?

What I meant was that somewhere before it had been mentioned that someone has machined or dressed off part on the hex so the 80034 or the 60 G plugs would seat into the head.
I never was clear if they meant about seating farther into the chamber or rather they meant seating and sealing into the head.

 

[IDIBRONCO]

Did some google searching, and everything I came up with, is the 24 is for my 86 F-250.
The 34 is not compatible with my truck.

80034 is for 1994 - 2004 GM
Chevy 6.2L & 6.5L

Yes the 34s are for the GM engines. The biggest difference is that the spade is narrower than on the ZD1As.

What I meant was that somewhere before it had been mentioned that someone has machined or dressed off part on the hex so the 80034 or the 60 G plugs would seat into the head.

I think that the Boschs will work are they are, but the AC Delcos won't seat correctly.

 

[Black dawg]

The 80034 fits without modifying plugs or engine. Has narrow spade terminal, and gets hot slower than oe plugs for ford idi. Great for manual control.

 

[Booyah45828]

80024 interchange to 12g. IIRC the 12g was self limiting but in 6.9 plug size, no modification required. On paper they would have been great, but when I bench tested a set of 8, all failed after a few lights with 2 blowing off the tips. I read at the time that it was because they sat on the shelf too long and absorbed moisture, not sure if I believe it, but that's the story.

 

[Old Goat]

Just ordered 16 of the Bosch 80034 GP`s from...
https://www.boschsparkplugs.net/bosch-0250202126-80034-glow-plug

They had 16 and ordered all them all.
$8.80 better than the $10+ Amazon show`s, which I wouldn`t buy from them anyway.

The 80024 I ordered in post 87, are made in Japan.
Be interesting to see where the 34`s are made.

Notice on Amazon the 80034 are made in China.

Goat