i know i should know this but....what are pineapple sleeves?

 

come on peeps let me in the on the know how.

 

they replace the 5th and 6th ports in N/A cars so that the air enters with less turbulance.

 

what do they look like? do they keep the 5th&6th ports open all the time?

 

They dont replace the 5th and 6th ports. All they are, are inserts that are placed into the 5th and 6th ports sleeves.

No, they do not keep the aux ports open all the time.

 

Only down side is that they will cause engine damage if not installed properly. If you do a search, you'll find the info. I had a set in my FC for 25k miles with no problems whatsoever. I did have Rob install them though. CJ

 

go to pineappleracing.com and you'll see 'em

 

thanks for all the info guys

 

I'd buy them, but have someone who's a prof. install them into the 6 port sleeves. I know Robs done alot, but I think Kevin landers (Rotary Resserection?) has done quite a few too. CJ

 

I had Rob install the inserts into my 6PI sleeves a couple years ago when I was installing a Mazda reman. Rob said that he uses Locktite as an adhesive. If I recall correctly, that the inserts have some radial curvature to them and wouldn't be able to enter the engine even if the did debond from the sleeve. This was one of my original concerns about the sleeves. I haven't had any problems with them since I put them in a couple years ago.

Hot_Dog
90 RX7 GXL
02 Acura RSX-S

 

The problem was that they would back out, towards the intake manifold. They would then hit the little 6 port rod, and vibrate around, peices would break off and go through the engine. Then, it would be rebuild time. CJ

 

what are the hp gains on those things anyway?

 

I dont think anyone really knows. I have heard as little as 1 to 2 hp up to noticable gains. I have them on my car but I have not been able to test them yet becasue I am still taking it easy on my engine.

 

1-2?!?!!?......thats not very much. i was goin to do that mod but now it seems like a waste of time

 

i dont think its worth the risk for just 1-2 hp

 

I was giving an example of what I have heard. Alot of people say they notice a nice increase, and if you have rebuilt an engine you will understand how these things help smooth the flow of the stock 6pi. It is very hard to really know how much is gained by these sleeves, I do know that I have heard that someone only found an increase of couple of hp, however no hard evidence was shown.

As for the "risk"...well I took apart one of my engines that I had installed the sleeves, one of the sleeves had backed away from where it was supposed to be installed, this was before all the news of the sleeves causing problems. If you goto pineapple they now have directions that should cure the problem.

I have my aux ports slightly ported and since I was rebuilding my engine I installed them. Are they worth it, I havent made up my mind yet, however I dont think they can hurt. In the end, I paid for them and I am going to be damn sure that I use them. If you have some cash to spend buy them, otherwise I would upgrade other parts of your car first.

 

i do wonder what the hp gains on those actually are. the only problem is that if you are going to tear apart your engine, you are usually doing more than just inserting pineapple sleeves, like porting or a rebuild, so you wouldn't exactly be able to dyno it before and after. regardless, look at your stock sleeves and the PR sleeves. doesn't it just make sense to put them in? i mean really. that ninety-degree angle just stops the air hard i'd think.

 

I felt a very noticable gain. Atleast, for a n/a car. The way that Rob explained it to me, is that at very high intake speeds, the intake charge will actually hit the end of a stock 6 port sleeve, and slow down the charge behind it.

I think it was Rotarygod, that said that the intake see's speeds in upwards of a couple hundred mph! CJ

 

damn! i guess the reason for them is to make the intake charge less turbulent?