projected vs non-projected plugs
 

can someone explain the difference plz.... thanks

https://img.photobucket.com/albums/v...parkplugs3.jpg

https://img.photobucket.com/albums/v...parkplugs4.jpg

Hide from the nitrous. LOL

You stick your arm out into the fire then you are gonna get burnt.

projected plug=torch!
friend of mine just burnt up #5 hole.
he was on full race gas and thought he would be ok, but got nabbed.
ive ran them before i knew any better.

tr6=br6ef
"tr7" br7ef if you need one a lil cooler.
the ngk's are very easy to read as well.

great pics btw!!

Projected, non projected. A true nitrous plug will not have a projected tip, like the TR6 which always gets the KUDOS around here. Why? I do not know. the recessed tipped plug can dissipate the heat quicker, where as the extended tip can and often does turn into a blow torch affair, like 2nd picture. extended tip and detonation is not the sprayer's friend.

http://www.robertsnitrousservice.com...7%20resize.JPG

http://www.robertsnitrousservice.com...no%20plugs.jpg
Robert

good info, thanks guys...sticky info?

ewwww, robert!
that looks severely nasty.
whats the piston and head look like?
bad tune up, or what?

Which ones, LOL? The top two are from the nasty LSx issue of oil ingestion. Which could lead to detonation...

The bottom set just needs to be cleaned up and good for another few hundred miles. Motor lost #7 only, and barely scored the wall, fixable. Combo of issues, one being the TR6...
Robert

so if you were spraying a smaller shot like 100-150 would you be better off with the non projected like the br6 or would the tr6 be fine?

IMO, for a small hit and a stock motor, the TR6 can work as a street/strip plug (not my personal choice). The shorter tip plug would be better, IMO, for longevity sake. The Br6 will likely foul out quicker and be more troublesome for a street/strip plug, but if I was forced to use a #6 it would be the choice for me. I have been running the #7 as a street/strip plug for some time and it doesn't seem to affect drivability, however, some report problems.

The problems for the most part seem to be idle issues and of course not a very long life. I run it when going 200hp or less in my street/strip mode. Once I hit 200 and above then the 8 and 9 start coming into play. Others may have ideas and uses a little different than mine. Some guys run the TR6 at 200hp shots and seem to do fine. With that said, they likely do not know that the plug is probably turning into a glow plug.

Get yourself a good lighted magnafier and see what your motor likes, that is the best advice someone can give. You will be fine with either plug choice at your level as the cylinder pressure increase is not that great with a 100 shot compared to say a 200 shot.


Get yourself one of these (below) from the drug store (old people use em) and it can go along ways toward learning what works.
http://www.robertsnitrousservice.com...0Light%20I.JPG
http://www.robertsnitrousservice.com...light%20II.JPG

This is the type of thing to be concerned with. Signs of detonation IE: plug heat range, fuel octane, timing or a combo... the light can see even sooner the signs... little specks of aluminum transfered from the piston...
http://www.robertsnitrousservice.com...n%20resize.jpg

Hope this helps.
Robert

Just to prove that the TR6 is not total junk, here some from a good running sprayed car. The car saw numerous 100/150 shot 1/4 runs. No signs of issues, IIRC.
http://www.robertsnitrousservice.com...d%20resize.jpg
Robert

what size jet(s) were you running when this happened?

IIRC, those were with 285rwhp jets in quad nozzles and dry of course. I did win a big Dyno Shoot Out trophy that day... Not 100% sure they are one and same as we have many collections of plug pictures and sometimes forget to note what/when/why.
Robert

what is that color on the ceramic?

If I'm changing plugs every bottle, would there be an advantage with goin to a br6ef (3177) over a tr6 (4177)?

Well you just gain the benefit of the shorter tip and it's attributes, which could be the safety blanket needed should something else go a miss IE: bad batch of gas, they put regular into the Premium tank at the gas station. That's why, IMO, having every safety issue covered from all angles, or more than one area slightly conservative is best. That type of thinking works well for the average street/strip car. Now dedicated race cars will be close to the ragged edge in comparison to the street/strip tune, but in reality will be safe as well, just different. :drive:
Robert

Honestly I don't know much about these as my notes were not very good. The brownish color is fine, IMO. We can see various colors from different fuels. Many can tell exactly what fuel you were running by the color it gives off. These did have some race gas on them, as well as pump gas, so actual color really tells us not a lot, except they are burning basically OK at the point they were pulled.
Robert

for 20 bucks, its worth seeing.
if you can keep the heat down, you might actually make a few more hp, not to mention the safety factor.

if you want to really get into tuning, you could try a 7 plug and see how the timing looks on it.
depends on the combo, but you might be able to get away with a degree or two of timing on the colder plug and go faster than with less timing and a hot plug. all while being easier on the motor.

:barf: He got off lucky with spraying only a 100-150 shot.