| [ Total Views: 532 | Total Replies: 4 | Thread Id: 29939 ] |
|
|
 AdrianH
Officially Full-On Dubber
Posts: 257
Threads: 20
Registered: March 5th, 2004
Member Is Offline
Location: New Zealand
Theme: UltimaBB Pro Blue ( Default )
Mood: rebuilding again
|
| posted on October 12th, 2004 at 05:05 PM |
|
|
Total Seal rings question ??
Im interested in peoples opinions. I was reading a book on the weekend that stated that unless you were running nitro or methanol (or anything that
rich) they were possibly causing more harm than good.
Opinions ??
|
|
|
fullnoise
Fahrvergnugen
Posts: 964
Threads: 103
Registered: September 21st, 2002
Member Is Offline
Location: Sydney
Theme: UltimaBB Pro Blue ( Default )
Mood: Middle of the road.
|
| posted on October 19th, 2004 at 07:56 AM |
|
|
Anyone, anyone, anyone? I'd like an answer to this one too. Perhaps Cal-look.com?
esratrams
|
|
|
PurpleT3
Fahrvergnugen
Posts: 880
Threads: 55
Registered: April 8th, 2003
Member Is Offline
Location: Knox, Melbourne
Theme: UltimaBB Pro Blue ( Default )
Mood: knackered
|
| posted on October 19th, 2004 at 08:55 AM |
|
|
I know they are very expensive relative to conventional rings, so they will damage your wallet. Not that I have personal experience with them, but
considering how they work, I cann't understand why they would damage your engine. They just eliminate the gap by having overlaping sections at the
joint. Unless they are harder then regular, or have more outward spring on them, what harm do they cause?
I was told that they were a complete waste of time & money on a stock engine, but a race engine would be different
Ain't nothin' like the wind in your hair.
|
|
|
AdrianH
Officially Full-On Dubber
Posts: 257
Threads: 20
Registered: March 5th, 2004
Member Is Offline
Location: New Zealand
Theme: UltimaBB Pro Blue ( Default )
Mood: rebuilding again
|
| posted on October 29th, 2004 at 07:43 PM |
|
|
Heres what I read in an abbreviated form.
The rings act as a heat sink passing the heat from the crown of the piston to the cylinder wall.
In normal ring operation when the piston is heading up the compression rings are forced against the ring land, on the power stroke the expanding
gasses force the ring to stay seated on the land. In normal operation the rings (once warm) have very little if any gap left for gasses to escape past
as long as the ring is firmly seated against the land.
Total seals stop any blowby, so what can happen is gas gets past the first ring, the Total seal stops it. If the pressure between the first and second
rings exceeds the pressure in the combustion chamber the top ring can move away from the land, once it does this it isnt transferring heat and you
could melt a piston or experience detonantion due to it (worst case scenarios).
In saying that Im using them, and a lot of others do to, I just wonder weather they actually rob a bit of HP ??
It does make you think about vacuum pumps on the crankcase and how they could add power. If you provide a vacuum at the rear of the piston the rings
would have no chance of leaving the land, it would have to increase efficiency.
|
|
|
tassupervee
A.k.a.: Knob Jockey
Custom Title Time!
That really hurts doesnt it!
Posts: 1171
Threads: 25
Registered: September 21st, 2003
Member Is Offline
Location: Huon Valley SouthernTasmania
Theme: UltimaBB Psyche Blue
Mood: Moody!
|
| posted on October 29th, 2004 at 11:05 PM |
|
|
I use Perfect Circle gapless 2nd rings in my F-Vee engines.
These are a 2 piece ring rather than an overlapping ring end
The gapless rings can be re-used many times.
I have notice increased smoking from the engines tho. I dont bother with this however. Smoke means oil, oil means lubrication!
Im not a complete idiot, quite a few parts are missing....
|
|
|
