Originally Posted by
tc5 man
i have a question (i bought a used rb c5, from a racer that i know) and (it still needs to be, broken in its pretty tight.)im gone to (run 20% nitro there was no glow plug in, the cooling head.) so i have some (nova #5 plugs, will they fit the rb head?) is that the, right plug for that? percentage of nitro.
The Nova #5 plugs should work just fine in that engine with 20%. Do you know if it is a C5 or a C5BB?? The C5 is older and does not have quite the bottom end power of the C5BB or the C6 or B9. Do you have the box it came with or even the serial number can help determine.