corner seal ?
#1
corner seal ?
What do all of you think about the atkins corner seals ? I have always used mazda , What would be the advantage of these corner seals . I bought an aluminum shifter bushing from atkins once(for my 79-80 sa trans ) and about 500 miles later the thing wedged site ways . So I am a little weary of atkins products .
#3
Moderator
iTrader: (3)
Join Date: Mar 2001
Location: https://www2.mazda.com/en/100th/
Posts: 30,802
Received 2,577 Likes
on
1,831 Posts
agreed, no point to going aftermarket.
#4
Junior Member
Join Date: Mar 2013
Location: Santa Rosa,Ca.
Posts: 36
Likes: 0
Received 0 Likes
on
0 Posts
Lets hear some more i just installed atkins solid corner seals in my half bridge 12A with FD springs and RA seals. Ok i am not na but still wondering any more input?
#6
Sharp Claws
iTrader: (30)
for bridged motors it will aid in sealing but it will also exponentially add wear at the extremeties.
even for bridged engines i just use OEM corner seals with no plugs.
i've built a small number of engines with solid corners and never had a problem but the OEM seals work and work well.
if you want the longest life from your engine just stick with OEM corners.
even for bridged engines i just use OEM corner seals with no plugs.
i've built a small number of engines with solid corners and never had a problem but the OEM seals work and work well.
if you want the longest life from your engine just stick with OEM corners.
Last edited by RotaryEvolution; 03-14-13 at 12:07 PM.
#7
Old [Sch|F]ool
Solid corner seals look like they'd be weaker than OEM rubber plug style seals. The OEM seals have no inside corners like solids do.
That said the biggest problem, for an N/A, is the side seal wearing into the corner seal. I've reused old side seals and just used new corner seals to close the gaps back up.
That said the biggest problem, for an N/A, is the side seal wearing into the corner seal. I've reused old side seals and just used new corner seals to close the gaps back up.
Trending Topics
#8
Sharp Claws
iTrader: (30)
solids work better at preventing breakage, but in almost every event that a corner seal had broken the apex seal is what took it out. so even if you saved the corner seal the apex seals were still already trashed, requiring the engine to come apart anyways. even solid corners will wear from the side seals, the added friction and density is likely what causes them to eat some end plates.
#11
Junior Member
Join Date: Mar 2013
Location: Santa Rosa,Ca.
Posts: 36
Likes: 0
Received 0 Likes
on
0 Posts
#13
Rallye RX7
iTrader: (11)
2. Ran it with no center plugs? hrmm. never thought of that - care to elaborate your reasoning/experience?
I would have figured for a bridgeport to enjoy the larger surface area on a solid corner seal.
#16
******
iTrader: (7)
Join Date: May 2009
Location: miami
Posts: 901
Likes: 0
Received 0 Likes
on
0 Posts
What do all of you think about the atkins corner seals ? I have always used mazda , What would be the advantage of these corner seals . I bought an aluminum shifter bushing from atkins once(for my 79-80 sa trans ) and about 500 miles later the thing wedged site ways . So I am a little weary of atkins products .
but i always use mazda , no issues at all
#17
Old [Sch|F]ool
I don't use them anymore, they just make it a PITA to assemble and don't seem to do anything useful anyway. Maybe they help at 750rpm, but who cares when even a street port idles at 1200?
#18
Moderator
iTrader: (3)
Join Date: Mar 2001
Location: https://www2.mazda.com/en/100th/
Posts: 30,802
Received 2,577 Likes
on
1,831 Posts
i replace em, but even on a stock engine they are missing sometimes
#20
Lapping = Fapping
iTrader: (13)
You mean the spring? The NF01 corner spring is the stock part number of the 20B and also came stock in the FD. I use them in earlier engines as long as they have nitrided side plates and are planned to be boosted. They're very stiff. If you want a less stiff spring for NA use, get the RX-8 spring.
#21
Rallye RX7
iTrader: (11)
You mean the spring? The NF01 corner spring is the stock part number of the 20B and also came stock in the FD. I use them in earlier engines as long as they have nitrided side plates and are planned to be boosted. They're very stiff. If you want a less stiff spring for NA use, get the RX-8 spring.
This is a screen shot from mazdaspeed motors sport comp catalog.
S is stock part
C is competition part
the racing flag is new comp part
#22
Moderator
iTrader: (3)
Join Date: Mar 2001
Location: https://www2.mazda.com/en/100th/
Posts: 30,802
Received 2,577 Likes
on
1,831 Posts
you mean ZR03? that is the 20B race engine, and not the JC cosmo street car engine. i think it will be for a 3mm apex seal as well
#24
Mountain Builder
iTrader: (1)
Good info in this thread. I built my last engine, a franken-NA application, without the plugs, but with 3mm OEM corner seals and FD corner springs. My irons checked out in-spec and I had no wear on the corner seals from the side seals. I guess the differences in experiences lie relative to the differences in assembly technique paired with the different combinations of parts.
My $0.02
Also, Fidelity, you're looking for piqued* there. Hahah
My $0.02
Also, Fidelity, you're looking for piqued* there. Hahah
#25
Rallye RX7
iTrader: (11)
Hey its the internet, everyone has their own opinion. Plus I like to play devil's advocate. There is a lot of witchcraft in these engines, everyone builds/cleans/ports/preps/assembles them all a little bit different, everyone has their own preferences.
Either way I have assembled a motor with each kind (SP = stock corner seals, half bridge = solid) but neither are torn down yet, application/injection is similar but it may be years before they are both apart. However the stock corner seal built engine had much shittier irons/housings to begin with.
Either way I have assembled a motor with each kind (SP = stock corner seals, half bridge = solid) but neither are torn down yet, application/injection is similar but it may be years before they are both apart. However the stock corner seal built engine had much shittier irons/housings to begin with.
Thread
Thread Starter
Forum
Replies
Last Post