apex seals.

[blargonator]

who makes the most reliable 2mm apex seals for a N/A 13B? about how much will they cost me. i already know i would need 2mm because they can be reliable up until 9,000 rpms and i would never rev the engine that far.

[FC_RAUL]

You might want to ask this question at www.teamfc3s.org or www.rx7club.com

[su_maverick]

I would go with hurley, have heard nothing but good things about their 2 piece 2mm seals.

[JunpoweR]

Or go with Rotary Aviation

Im going with 3mm apex seals from them and Hurley duplex sideseals and conner seals..

RB goodies ;

hardened stationary gears,aluminum side housings,,ECT

[blargonator]

i thought you only use 3mm seals on crazy cars that are tuned to the point where you can barely drive them on the street.

[JunpoweR]

Originally posted by blargonator
i thought you only use 3mm seals on crazy cars that are tuned to the point where you can barely drive them on the street.

Well I will drive it on the Streets.=)
with about 350+RWHP =)

[theflatlander]

Originally posted by blargonator
i thought you only use 3mm seals on crazy cars that are tuned to the point where you can barely drive them on the street.

or the 2mm apex seal grooves have been worn too much and have to be machined for for 3mm.

[JunpoweR]

yes flatlander is right also

people have diffrent reasons for upgrades..
weather it be more power or the stock groves are worn too much
it's just better no matter how u drive since it's thicker, it's stronger, so this means it will probably last longer.

using racing parts under the same driving style you have, the motor will last longer because the upgraded parts are stronger in construction and materials it's made of.

Like a high output motor has gobs of power so u only use about 20% of throttle were as a geo metro you probably use 90% of throttle to keep up with the faster car meaning youre using more power and wearing it out faster while the performance engine is working at 20% of its capacity..I'm sure the high performance engine working at 20% wil llast longer than a lower output motor at 90%.

[turbo23]

atkins rotary makes great seals. They set pretty quickly after a rebuild. A guy i know makes 768hp on his Drag FD and uses stock mazda seals with a large street port. So 3mm arent always needed, it all comes down to tuning.

[blargonator]

yeah. i know this guy who had a 300ZX and he sold it but now he has a geo storm! a big upgrade.....hahah geos are about as nice as for festivas.

[JunpoweR]

3mm isnt needed but they will last longer and withstand higher heat and boost better no matter what people say.

Yes proper tuning is mandatory on high hp but also the parts work with the tuning I bet if that guy used 3mm he could probably squeese out 2-5 psi more..=)

[Ghost of Duluth]

Actually, it all boils down to preference. Some tuners swear on 2mm and some swear on 3mm. Some say 2mm will hold better boost and some say 3mm.

Depends on who you ask.

[JunpoweR]

Originally posted by Ghost of Duluth
Actually, it all boils down to preference. Some tuners swear on 2mm and some swear on 3mm. Some say 2mm will hold better boost and some say 3mm.

Depends on who you ask.

Honestly what do you think..
isnt something thicker stronger??

Physics and engineering
its a flat piece of metal so I guess Just depending on the materials used
But if its the same materials ill use 3mm

[f8ldzz]

Hurleys are JUNK.
Atkins doesn't recommend high boost with their seals.
I stick with stock Mazda.

[theflatlander]

if you want the ultimate apex seal you could go with Ianetti apex seals.

[PhoPower]

Originally posted by theflatlander
if you want the ultimate apex seal you could go with Ianetti apex seals.

Or you can just go to a piston engine

[SC_erritos]

what are seals (sorry for the stupidity of the question)

[f8ldzz]

Originally posted by theflatlander
if you want the ultimate apex seal you could go with Ianetti apex seals.

Stock Mazda is about $60 / each.
Atkins are $40 / each.
Rotary Aviation are $182 / set of 6.
Last time I checked, the Ianetti's were easily over $1,000 / set of 6.

For those who don't know rotary engines, you need 6 per engine.
Even with the stock Mazda seals, $360 is not bad compared to $1,600.

The Ianetti seals do not seal as well as the stock Mazda units.
The ceramic seals, when they do fail, will trash everything internally.
I wouldn't call them "ultimate".

[f8ldzz]

Originally posted by SC_erritos
what are seals (sorry for the stupidity of the question)

Apex seals in the rotary engine is about as equivalent to piston rings in a piston engine.
They are used to seal the combustion chambers.
If they fail, you get low compression and a poorly running engine, if it does run at all.

[Ripper]

Originally posted by SC_erritos
what are seals (sorry for the stupidity of the question)

apex seals are what holds the pressure for the a/f mixture compresses.

[kaosman]

Originally posted by JunpoweR
Honestly what do you think..
isnt something thicker stronger??

Physics and engineering
its a flat piece of metal so I guess Just depending on the materials used
But if its the same materials ill use 3mm

There's a lot of misinformation regarding apex seal sizing. All a 3mm seal allows you to do, for a fact, is reuse old worn rotors. Everything else is a myth. While 3mm apex seals are thicker, they will only tolerate a few seconds more of detonation than the 2mm seals. The end result will still be a broken engine. Detonation can create pressures on order of 150,000 psi...1 extra mm is not going to save your seal. Your desire for durability needs to be addressed by the tuning, not the apex seal.

The negative aspect of the 3mm apex seal is weight. 3mm apex seals are known to have sealing problems at low revs and chatter at high revs. 2mm apex seals can actually net more power than 3mm, and in the hands of a good tuner the setup can last just as long.