No power gain from Underdrive Pulley?...

[Gelbster]

Originally Posted by Steve Tinker

I think there is some misunderstanding regarding the underdrive pulley.

There possibly is a 5hp gain with the reduced parasitic loss, but the gain is @ low to mid range rpm, not max rpm. A good dynamometer chart would show only a slight bump in HP @ 3,000 - 4,500rpm not @ 7,000rpm.
And dyno charts with compensation numbers "built in" for gearbox / transmission losses are pure nonsensical - who wants to prove that a gearbox soaks up 12% or 15% or 20% of the rated engine power output, let alone adding in different daytime barometric pressure, temperature and rolling road calibration changes.

Makes perfect sense.

[itsnotanova]

I wish Jake Raby was still allowed to comment on here. I'm sure he has a lot to say about this

[jaykay]

-parasitic engine torque load reduced.
-p/s pump damage pontential at a sustained 4K+ rpm reduced.
-measured net BHp change as a result of reduced parasitic torque load will vary.

[Lapister]

That UK guys video on his tip/Dyno after installing the UDP pretty much backs up Steve Tinkers post. It frees up HP but doesn't give you anymore than what you had. In his case before /after dynoed the same. Youtube- Road and race.

[Porsche9]

Originally Posted by itsnotanova

I wish Jake Raby was still allowed to comment on here. I'm sure he has a lot to say about this

Did I miss something?

[itsnotanova]

Originally Posted by Porsche9

Did I miss something?

Wayne doesn't want Jake on his forums anymore.

[jcslocum]

Originally Posted by particlewave

The flywheel has a lot of mass. I wonder what the supposed gains from a lightweight flywheel are? If the UDP beliefs are true (5-10hp), then the gains from a lightweight flywheel must be 5x more (since the flywheel has probably at least 5x the mass as the acc pulley). I doubt a lightweight flywheel adds 25-50hp, lol

A lighter flywheel will add no HP to the car at all. It will allow the engine to spin up quicker, essentially "waking" the engine up a bit. The lighter flywheel will also add to the engine braking because the less momentum it has.

I wish I had added a lighter flywheel to the Box when we did the clutch and IMS. The car feels a slow to rev...to me.

Just my .0002

[heliguy]

Has anyone seen this on Suncoast?

Boxster Performance Exhaust
Agency Power has developed and tested this exhaust system for the Porsche 986 Boxster. The all T304 stainless steel exhaust features a mirror polished finished, thick flanges, OEM fit, and an incredible sound. Producing an amazing sound which gives the Porsche a nice race tone, this exhaust is still comfortable for daily driving. As tested on a Mustang Dyno, the Agency Power Porsche 986 boxster exhaust produced an impressive 23HP and 11ft/lbs of torque.
Not Yet Rated | Write the First Review
#AP-986-170
$695.00


I'm not sure I believe their claimed HP increase.

[Nine8Six]

Originally Posted by heliguy

Has anyone seen this on Suncoast?
http://www.********************************************** ******.com/product/AP-986-170.html
I'm not sure I believe their claimed HP increase.

Blk on white bud: "...produced an impressive 23HP and 11ft/lbs of torque"

Just bought two; one for each side. Not sure how I'll install them yet but I'll get a total of +46HP when I do

[BrokenLinkage]

Wait a minute. This forum, the world's largest compendium of boxster knowledge and support, has uninvited Jake Raby, generally regarded as the world's foremost expert on the boxster engine? WTF?
Yes, he can be arrogant, brusque, tintillating, and self-serving, sometimes in the same post. But the same could be said of many of our participants. And unlike most of the others, he is also generous with knowledge and insight that took him years of intelligent, focused, and sustained effort to obtain.
Regardless of bruised feelings or inherent potential conflicts of interest due to products he helped develop, he never hawked his services here. I for one appreciated the fact that he cut through a lot of BS with observations based on actual experimental testing. When a thread was getting run over by people with a sample size of one relating their individual experience or personal opinions, it was refreshing to have him weigh in with factual data and observations based on a sample size of thousands of engines. This would often be data that No One else would ever be in a position to obtain, much less share.
I do not mean by this to discount the incredible contibution of other members, such as JFP and ByPro, that have shared proprietary information that represents equally hard-won business specific knowledge for them.
But most of us on this site are just duffers, and to exclude someone with Jake's wealth of experience hurts us all. When I chose a surgeon, I want someone with skills in the OR and good outcomes; bedside manner is optional. When I get advice on an engine, I want it to come from an expert on that engine, even if I don't always like or even agree with what he says or how he says it.
Wayne, I am eternally grateful for your beneficence in setting up this site, but to exclude Jake was a seriously bad move, and devalues the site.

[steved0x]

Originally Posted by itsnotanova

Wayne doesn't want Jake on his forums anymore.

Bummer... Jake has helped me 3-4 times both on and off this forum.

[heliguy]

Originally Posted by heliguy

Has anyone seen this on Suncoast?

Boxster Performance Exhaust
Agency Power has developed and tested this exhaust system for the Porsche 986 Boxster. The all T304 stainless steel exhaust features a mirror polished finished, thick flanges, OEM fit, and an incredible sound. Producing an amazing sound which gives the Porsche a nice race tone, this exhaust is still comfortable for daily driving. As tested on a Mustang Dyno, the Agency Power Porsche 986 boxster exhaust produced an impressive 23HP and 11ft/lbs of torque.
Not Yet Rated | Write the First Review
#AP-986-170
$695.00


I'm not sure I believe their claimed HP increase.

[edc]

Looks just like the usual exhausts which you see on eBay and are sourced via alibaba. Even the stock picture is the same. Buy enough and you can brand and stamp what we logo you want on there.

[rfuerst911sc]

I have a few comments to ad , I will preface that I am a Jake raby fan for many reasons . Jake does not do well with idiots and because of that comes across as brash and arrogant . To talk to him in person and to deal with him on a daily basis is quite different .
I have told Jake many times he is a nut , but I mean that as a compliment . He is 150 percent driven on taking something that is weak , abuse the heck out of it to break it and then come up with a solution. In many cases we can repair our cars because of him. No I am not a paid spokesman just a very happy customer .
I actually talked to Jake after " the ban " and I was quite surprised . I have been a long time customer and fan of pelican parts . Great forums , completive pricing it is a great combo . But by banning competition seems petty to me but it is not my forum . I can contact Jake any time and get a reply generally within hours.
There are exhausts out there that can add HP/torque but most are overated . I base this on real world data on Jake's dyno using OEM , dansk , ghl on my 3.2 and 3.6 beast . I have an under drive pulley on mine also , installed by Jake . I was never promised any HP increase but was told quicker throttle response would be a result and easier on all the ancillary belt driven parts .
Ok end of my speech but I believe this forum is now less useful than it could be because of the ban . Go falcons !!!

[Gilles]

Originally Posted by steved0x

Bummer... Jake has helped me 3-4 times both on and off this forum.

+ 1

Hopefully someone will realize the value that Jake has added to all of our forum members and does the right thing.

It may not be easy, but sometimes we must think above ourselves for everyone's benefit and the continuous growth of this awesome community.

[Jake Raby]

To be clear:

I was the one that made the decision to no longer post here. This was done after I helped to create a company that can be considered a rival of Pelican Parts, who of course does own this forum. I decided not to come back this this forum after that exchange, as it was the most courteous way to move forward.

The word "ban" was never stated by anyone, and it was a peaceful exchange between all parties involved.

This is the first post that I have made here since that exchange, and I felt that the air needed to be cleared before things went downhill.

"Wacko- out!"

[Gelbster]

This Thread is a perfect example of what happens without Jake. Or someone to quote him. Lots of well-intentioned opinion or 1 time anecdotes. Collectively ,if we had hundreds of Posts on the same issue,maybe the consensus (there never is one !) may be useful.
By contrast ,Jake usually has a dyno test or some other data to contribute.That gets us back on the right track.Until some argumentative type starts accusing him of greed/arrogance/whatever. Then he gets mad and it all falls apart. The problem isn't Jake, it is lack of a Moderator to just delete Posts that are focused on baiting Jake.
This Forum is a much poorer resource as a result of excluding him. Before you dump the best player, doesn't the smart Team Manager line up a replacement? Any suggestions? Right. There isn't anybody.
And by the way ,I have never bought anything from him. But I could not have rebuilt my engine without his Posts.And neither can any one else. His work is a huge part of the collective knowledge on the M96.Nobody else comes close.
Like it or not, we need him way more than he needs us.
Jake thank you for your many useful contributions here.

Originally Posted by BrokenLinkage

Wait a minute. This forum, the world's largest compendium of boxster knowledge and support, has uninvited Jake Raby, generally regarded as the world's foremost expert on the boxster engine? WTF?
Yes, he can be arrogant, brusque, tintillating, and self-serving, sometimes in the same post. But the same could be said of many of our participants. And unlike most of the others, he is also generous with knowledge and insight that took him years of intelligent, focused, and sustained effort to obtain.
Regardless of bruised feelings or inherent potential conflicts of interest due to products he helped develop, he never hawked his services here. I for one appreciated the fact that he cut through a lot of BS with observations based on actual experimental testing. When a thread was getting run over by people with a sample size of one relating their individual experience or personal opinions, it was refreshing to have him weigh in with factual data and observations based on a sample size of thousands of engines. This would often be data that No One else would ever be in a position to obtain, much less share.
I do not mean by this to discount the incredible contibution of other members, such as JFP and ByPro, that have shared proprietary information that represents equally hard-won business specific knowledge for them.
But most of us on this site are just duffers, and to exclude someone with Jake's wealth of experience hurts us all. When I chose a surgeon, I want someone with skills in the OR and good outcomes; bedside manner is optional. When I get advice on an engine, I want it to come from an expert on that engine, even if I don't always like or even agree with what he says or how he says it.
Wayne, I am eternally grateful for your beneficence in setting up this site, but to exclude Jake was a seriously bad move, and devalues the site.

[10/10ths]

Wow! I'm late to this party.

Jake,
Thanks for posting and clearing this up.

If you read my post history, you will discover that I'm a middle aged guy who bought his dream car about two years ago. That car was a 2004 Boxster S "50 Years of 550 Spyder Edition."

I bought THAT car on purpose. I wanted THAT specific car.

One reason I settled on a 2004 Boxster, forget the SE stuff, was that it was the last car with a spare tire, a dip stick, and it had an IMS bearing that can be serviced with Jake's "Solution" for a permanent fix.

Also, I spoke with Judd, one of Jake's associates, for an HOUR on the phone before purchasing the car. He didn't know me from Shinola, and he was NOT getting a dime, yet he spoke to me for an HOUR on the phone before I had even bought a Porsche.

He helped me understand the failure points of these cars and the services they provide to owners.

I bought the car. I then chose to immediately ship my car to Jake and have them perform a list of preventative maintenance services.

I have previously posted how wonderful that experience was and won't rehash it here. If anyone is interested, please search my post history and read about it.

Jake Raby has made my life better. My life is more fun. I have more knowledge about machinery. I owe a lot to Mr. Raby.

To discover that Jake Raby is no longer posting on this forum and sharing his invaluable knowledge with all of us in the Porsche world makes me very sad.

Censorship is wrong. Self-censorship is a slippery slope.

I get the "business" aspect of all of this. I do. But as a car guy, who loves my Boxster, I just want to share the joy of ownership I experience every day with everyone on the planet who wants to own one of these cars.

Jake Raby makes owning these cars better, safer, more fun, and saves us all a lot of money, time, and walking home from a steaming pile at 3am, in the rain, a thousand miles from nowhere.

Thank you, Jake Raby.

[Gelbster]

Agreed. The Jake-baiters won. We lost. Jake has a Facebook page that he seldom promotes on Forums because he respects the Forum hosts. Lots of Tech info there.
All Pelican will achieve is to redirect Boxster people there and to Rennlist/RennTech.A little more Moderation may have prevented this? That is not censorship.This is Pelican's Forum .They have the right to eliminate nasty comments. And " nasty" is just whatever they wish to say it is.I'm O.K. with that -it is just respect of Pelican's Property Rights.
I write this with great regret. And I think I may hold the record for linking Pelican Parts and articles in my posts here and on Rennlist.
If you want a sample of how bad a Porsche Forum is without someone like Jake, read posts by some(not all)"experts" at 6Speedonline. They sound convincing but are often just wind bags.By contrast I find RennTech faultless for any technical subject.yes, -Tech, not list.

Quote from 10/10ths above:
"To discover that Jake Raby is no longer posting on this forum and sharing his invaluable knowledge with all of us in the Porsche world makes me very sad.

Censorship is wrong. Self-censorship is a slippery slope.

I get the "business" aspect of all of this. I do. But as a car guy, who loves my Boxster, I just want to share the joy of ownership I experience every day with everyone on the planet who wants to own one of these cars.

Jake Raby makes owning these cars better, safer, more fun, and saves us all a lot of money, time, and walking home from a steaming pile at 3am, in the rain, a thousand miles from nowhere.

Thank you, Jake Raby."

[Nine8Six]

Originally Posted by Jake Raby

I helped to create a company.

Wish you all the best for your future plans Jake. Both yourself and your knowledge will certainly be missed by a lot of members here. We know where to find you is what matters most I guess. Long life to the company

f.