GSL-SE owners - NEW Pineapple Racing 6-port sleeves
12-09-01, 12:14 PM
#1
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GSL-SE owners - NEW Pineapple Racing 6-port sleeves
I belive this has been added to the must have list!
http://www.pineappleracing.com/Prod-pr6pi.html
and at $50 a pretty cheap mod!
http://www.pineappleracing.com/Prod-pr6pi.html
and at $50 a pretty cheap mod!
12-09-01, 04:22 PM
#3
Old [Sch|F]ool
I remember Blake Qualley whittled something similar out of some material and used it in the sleeves in his $2000 Challenge car... looks like they went commercial with the idea 
Too bad I don't have a 6 port engine to put 'em in.
Too bad I don't have a 6 port engine to put 'em in.
12-09-01, 06:13 PM
#5
Old [Sch|F]ool
No way!
If you want to make power without porting, remove the exhaust sleeves and re-shape them so that the exhaust port is the same cross-section all the way from port entrance to exit. THEN PUT THEM BACK IN. Seriously. Exhaust flow is "critical" as it goes through the port, and it acts like a stream of water. The port going from tiny to huge in such a short area will cause low pressure areas (bernoulli effect) which causes turbulence and disrupts flow. Removing the sleeves with no other changes will only make things worse.
Sometimes, for a port to flow better, you need to *add* material, not remove it!
edit: I just remembered, Paul Yaw's headers have/will have a tongue in them that does this for you... http://personal.riverusers.com/~yawpower/pic19.html
If you want to make power without porting, remove the exhaust sleeves and re-shape them so that the exhaust port is the same cross-section all the way from port entrance to exit. THEN PUT THEM BACK IN. Seriously. Exhaust flow is "critical" as it goes through the port, and it acts like a stream of water. The port going from tiny to huge in such a short area will cause low pressure areas (bernoulli effect) which causes turbulence and disrupts flow. Removing the sleeves with no other changes will only make things worse.
Sometimes, for a port to flow better, you need to *add* material, not remove it!
edit: I just remembered, Paul Yaw's headers have/will have a tongue in them that does this for you... http://personal.riverusers.com/~yawpower/pic19.html
Last edited by peejay; 12-09-01 at 06:15 PM.
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12-09-01, 08:30 PM
#8
Super Newbie
Originally posted by Max7
well when you find a way to port without a rebuild you let me know
well when you find a way to port without a rebuild you let me know
12-10-01, 01:47 PM
#10
Damn, it did start!
remove the intake manifold.
12-10-01, 04:33 PM
#11
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Its not really a hard job, just take your time. while you got it all apart (intake) a good time to send those injectors off for cleaning. and replace the old dead vac hoses with some new.
Just be carefull with the oil injection lines
Just be carefull with the oil injection lines
Originally posted by darisgin
So, really; how tough would it be to install the Pineapple sleeves?
So, really; how tough would it be to install the Pineapple sleeves?
12-11-01, 06:40 AM
#12
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Note from Rob@Pineapple
The install is somewhat complex, but if the
service manual is followed, good notes are taken, keep
everything clean, will result in a good job. If you
can find a friend who has taken the intake off their
gsl-se or 2gen(basicly the same) is the safest bet.
Typical gains are 6-8hp on the top end. The sleeves
don't open until hi rpm/load. The good low end the se
has will stay the same, no change in idle quality
either. Rob
service manual is followed, good notes are taken, keep
everything clean, will result in a good job. If you
can find a friend who has taken the intake off their
gsl-se or 2gen(basicly the same) is the safest bet.
Typical gains are 6-8hp on the top end. The sleeves
don't open until hi rpm/load. The good low end the se
has will stay the same, no change in idle quality
either. Rob
12-12-01, 09:23 AM
#15
Rotary Freak
thankx for the info.
I street port so many 6 port engines, and I like the use the sleeves for customers that complaine to much about there low rpm hp not being all there. This info. on Pineapple sleeves comes at a great time. From 1 Rotorhead to the rest.. Thankx...
12-13-01, 01:16 AM
#17
Originally posted by peejay
I remember Blake Qualley whittled something similar out of some material and used it in the sleeves in his $2000 Challenge car... looks like they went commercial with the idea Too bad I don't have a 6 port engine to put 'em in.
I remember Blake Qualley whittled something similar out of some material and used it in the sleeves in his $2000 Challenge car... looks like they went commercial with the idea
Too bad I don't have a 6 port engine to put 'em in.
Rob's been doing these sorts of things for many years. On the $2001 Challenge Car (read all about it in the February issue of Grassroots Motorsports), we removed the sleeves, pressed in a rod of Teflon, and reshaped it with a die grinder to a more desireable contour. This is great for high-end power as needed in a race car. The new modified 6-port sleeves, however, retain the functionality of the stock sleeves, so you retain the low end but get a nice bump in power up top (6-8 hp, as estimated from ETs). Power improvement is better than simply removing the sleeves and you get to keep the low-end torque.I talked to Rob today and he expect the first batch to come back from the machine shop on December 24th. Shoot him an email to reserve a set: rob@pineappleracing.com
12-13-01, 01:56 AM
#18
8krpm is not enough
<drool> <scribbles on list under "rest of clutch parts" and "finally getting around to re-wiring the ignition in such a way that doesn't involve masking tape" and "radiator that doesn't shoot water out of endtank seams">
heh, always something else. I might as well just get a damn turbo and be done with it
--matt
heh, always something else. I might as well just get a damn turbo and be done with it
--matt
12-13-01, 12:09 PM
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Blake - Good job on the GRM article! Better luck in 2002, wish I could go
Rob - In my application I have the ports wired open for the moment and have no problem with low end HP (1500lb car ).
So did I read correctly that using these sleeves in a constant open position will yeild higher HP than just removing the stock sleeves completly? I was going to pull the sleeves this winter, but if these give more HP I may have to get a set.
BTW - Great idea!!!
Rob - In my application I have the ports wired open for the moment and have no problem with low end HP (1500lb car
). So did I read correctly that using these sleeves in a constant open position will yeild higher HP than just removing the stock sleeves completly? I was going to pull the sleeves this winter, but if these give more HP I may have to get a set.
BTW - Great idea!!!
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