which plug

[Ross Northcott]

Hi i have a OS.50SX-H Ringed Hyper Engine and would like to know the best glow plug to replace the original ? dont want a cheap crappy one.
thx in advance

[sacko]

Os 8

[Mart61]

I think many use the OS No.8.

[Smoothound]

Or Enya 3 as far as I can remember from my Nitro days...

[chris jones2.4]

used to use enya 3 but have changed to o.s. 8 because of the cost, my engine goes through em weekly

[sacko]

Enya runs hotter I think.

[adieuk]

i use os no8 mate and had no problems with them

[pchristy]

OS 8 and Enya 3 are roughly equivalent. Both are good.

IIRC, Enyas get colder as the number gets higher (ie a 5 is colder than a 3) whereas OS are the opposite.

Chris - if you're knocking out plugs weekly, you are probably running too hot a plug. Either try a cooler one, or put some shims under the head to reduce the compression ratio.

A bearing breaking up will also knock out plugs!

--
Pete

[David Drew]

There was a bad batch of Enya 3s. I got a couple that just blew PDQ.

[chris jones2.4]

Chris - if you're knocking out plugs weekly, you are probably running too hot a plug. Either try a cooler one, or put some shims under the head to reduce the compression ratio.

checked the bearings in the engine, seem sweet, we found the pin that stops the piston ring from turning was slowly discintegrating, might mean a new engine soon. 75 hours old, probably in excess of 15 plugs