Pineapple Racing HD water seal ?

is it good?

Anybody here had them before ?

and is it the same as Mazda O-Ring set ?

I did a search, no answer to this.

 

Have them in my current engine. Been working great as far as I can tell.

These would be the water jacket seals that run along the outside of the engine, not sure what mazda calls them, but O-ring makes me think smaller, like the dowl seals, etc.

edit: looks like this is indeed comparable to the mazda o-ring set.

 

Im not so sure what the Mazda's "o-ring set" has, but from what I can tell, it has almost all of the O-rings in the engine, including Inner/Outer Water seal and O-rings for Dowel pins.

Im just not very sure if Pineapple's set has the same amount of seal as the Mazda's set. Mazda is a bit cheaper. but if Pineapple swears by it then ... I dunno, still thinking. maybe I should drop Rob an email and ask.

 

i prefer the square style mazda seal, though the pineapple ones are supposedly reusable.

 

I'm told pineapple and RA soft seals are THE ****.

Not **** as in bad but THE **** as in freakin awesome +1%%%%bbq would fap to again.

 

Im thinking that too. but Stock seal will most likely fail after one or 2 overheating (not like I should overheat the engine in anyway plus I have other things to concern like warp iron, etc etc)

O_O .... u sound like you're lying ...

 

My experience with these seals wasn't good. I lubed them up with vaseline, went to put them into their grooves in the irons, they were sitting fine, by the time I got the housing on the seals had moved.

I found these seals to be too small for the grooves they fit in, by the time I had the engine together a couple seals turned into plastigage, and I had to take the engine appart again.

Took it appart, saw the seals were destroyed... Got some square cut mazda seals, they fit in perfectly, and stayed where they put. Personally I wouldn't EVER buy them again, I have heard of similar experiences from a engine builder as well.

Pineapple racing is fantastic, but personally I didn't like this product.

 

We used them in our rebuild and had no problem installing them whatsoever.

We had both the Pineapple and OEM o-rings on hand and the Pineapple ones seemed more robust. We bought the Pineapple ones from a board member.

If I was building another 13B, I'd use em again. Rob really knows his stuff and stands behind his products and happily provides advice on the phone. Certainly no fly-by-night ebayer and his products IMHO reflect that.

 

Vaseline IMO is not a really good choice to keep the seals in place. it mean it would work, a lot of builders use it cuz its f-ing cheap, easy to get, and does the job fairly well. but I think over time its going to attack the seals. Just my opinion.

when im gonna rebuild mine Im gonna use stuff like hylomar (I think thats what Mazdatrix use too, correct me if im wrong)

I can buy Mazda's O-ring set for around 30 something bux cheaper than getting Pineapple racing's seals (assume that they both has the same amount of rings) so ... I might just stick with stock for now ? ...

 

IIRC I originally tried hylomar, but I found that they would not fit into the grooves at all. They were too small, vaseline helped expand them slightly so they actually sit in.

It's all going to be personal preference, but I would rather just use mazda seals, and replace them everytime.

 

I used a dab of permatex "right stuff" and smear it with my finger all the way around the inner groove (make sure it's super thin, dont want hydro-lock) that stuff is so extremely tacky, there was no popping out after the ring was laid down in it, hell, you would have to force it out even before the right stuff cured. tacky like tar. the only difference is i used mcmaster seals, from what i have read they are better (slightly thicker)and cheaper.

 

I guess its really a personal preference thing.

Gonna go for Mazda seals plus hylomar. Gonna order the parts in a week or 2.

Thx a bunch for the input guys

 

seals virtually never fail on their own. if a seal fails due to overheating it's because the housings are warped, or an iron breach allows the seal to pooch out. if either of these happens it doesn't matter what kind of seal you have..it's going to leak.

 

Iv used them and im about to reuse, very good!!!!

 

look for BDC's write up on em...

 

If I recall correctly, Vaseline is called out by the FSM for use in installing the water seals. It causes the seal to swell and fit tighter. That's why they are not reusable, they come out a lot bigger then when you install them.

 

square> round

also, the RA seals only last about 5 years at most, the pineapple seals may last longer but their sealing capability i still feel i doubt can compare to the surface traction that the OE seals offer. the RA seals for example, the teflon outer shell chafes on the irons with expansion/contraction and they will begin to leak internally much sooner than the OE seals often fail in. i only use round type of seals in racing applications where the engines are going to be disassembled much sooner than a DD engine would, and because they are reusable where the OEM seals tend to fall apart after one or 2 disassemblies.

these seals do offer the good points of resuability and much higher melting point, where the OE seals tend to liquify at around the 250-270*F range, but longevity is compromised in exchange.

if you do not plan to run the engine severely hot or tear it down in an early span then OEM seals>all others. add a little bit of ultra black to the sealing surface of the rotor housing and you have a solid seal better than any other for long periods of time.

 

+1 Karack. Wise advice.

B