Glow plugs

Intlwaters

Help Support Intlwaters:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
Ran standard OD287's for years but the dyno said a colder plug made more HP so I've switched to the 289.

The 287 and even the 277 work better when the air temps get below 10C/50F.
NOW THAT IS GOOD INFORMATION
Based on objective data.

Very interested in other findings from dyno testing.
 
NOW THAT IS GOOD INFORMATION
Based on objective data.

Very interested in other findings from dyno testing.

Gonna crank it up again soon after trimming another 1/4" off the wheel and might have some info to share then.

Any changes in reliability or tuning?

The only difference I found was that you havta be extra careful with the needle, the heavier element will hang in and you can hurt stuff where the hotter plugs will act as a fuse.
 
Last edited:
Plugs in general Joe, big engines or small.
I have 91RS not 101's
Yes the plug is But the Packing used & the wire Is Not, Odonnell 289 289T Has a Double wad packing & can stand a lot of abuse before failure, MC8 is no were as stable on the wire as a MC9. Small motors dont seem to care. BIG BLOCK 91 & 101 Motors do.
 
Gonna crank it up again soon after trimming another 1/4" off the wheel and might have some info to share then.



The only difference I found was that you havta be extra careful with the needle, the heavier element will hang in and you can hurt stuff where the hotter plugs will act as a fuse.
Fuse, :confused: pow.....
 
Back
Top