NEW 32V camshaft sets. - Page 9

terry91GT · 01-06-2010, 07:16 PM

WOW those welded cams look bad , what person in thier right mind would have paid money for them ??

maybe some one said they will buff right out with a little clean up .

Terry

Lizard · 01-07-2010, 12:06 PM

Erkka,

You are correct that it would be nice to be able to do that.
The cost of machining goes through the roof though (I checked). The other problem is that the 968 have less teeth on the cams to allow for the variocam.

928 GTS · 01-10-2010, 02:17 PM

Another great to have feature would be if chain gear(s) could be turned to different positions. This would allow intake cam adjustment in relation to exhaust cam and also gear replacement in case of problems in it. Didn't Sterling have removable gears in one previous setup?

Lizard · 01-10-2010, 04:57 PM

Erkka,
I do agree with you on this, But Sterlings attempts at this showed that it was not strong enough to be a good idea. That and the extra cost was not worth spending much time trying to reinvent the wheel so to speak.

However at this time, we have had a private party step up to the plate, and taken the 10 sets that were previously spoken for!

So the cams are a GO!
I will leave the buy in for anyone who wishes a set still open until Feb 1st. So if anyone else is interested in a set at the current price ($1600). Please contact me immediately.

However the casting process will commence shortly!

to all those who have participated and been patient with the minor delay.

Sterling · 01-10-2010, 08:09 PM

congrats for getting this off the ground~!

the flying scotsman · 01-10-2010, 08:40 PM

Hi Colin...............I'm new to this party and have some basic questions:

are the cams plug and play?

do we need new lifters?

what benefit is anticipated over stock S4 config?

cheers..............Malcolm

Lizard · 01-10-2010, 08:56 PM

Hey Malcolm,

Yes and no to your first question.

I would recommend stiffer valve springs with higher duration cams. This can be done with the heads left on the car.
I would also recommend replacing the lifters with the light weight VW lifters. But technically if yours are in good condition then they will not have a problem.

As to the benifit, that all depends on the cam grind. A GT+ grind will give a nice boost over stock power, while not killing much torque. Where as a wild grind like a .460" lift and 233 duration will result in a much greater top end power with a drop in bottom end power.

LostInSpace · 01-11-2010, 02:23 AM

Colin,

Great news and thanks once again for the time and effort put into this project

Looking forward to the updates and need to starting thinking about which grind to go for.....

hilton · 01-12-2010, 06:37 AM

Excellent news.

Glad you've pulled it off, and thanks to the invisible private individual with 10 sets! Your commitment is much appreciated.

Lizard · 01-13-2010, 01:10 PM

Agreed 100% Hilton!

And I know that we all are seriously looking forward to being able to hold these new jewels in our hands!

90 S-4 · 01-13-2010, 08:08 PM

Just thinking out loud here.. since the chain gears can't be made to be adjustable,
would there be any benefit in making a change to the Advance/Retard orientation of
the gear before it is machined into it's permanent setting.
I don't know what Sterling learned while he was making his adjustments, maybe he could
chime in as to whether or not a small increase in advance or retard shows any gains.
Rather than using the exact factory timing, maybe this could be a place we could pickup
a little extra performance ?

Lizard · 01-13-2010, 10:58 PM

90 S-4

I have considered the intake timing by adjusting the gears on the chain.
The timing selected will not hurt the upper power, and will raise the peak TQ number to a slightly higher range than a set of cams with less lobe seperation angle (LSA).
However running with the LSA of the S3 cams this will be good for all cars. The reason is that in wilder cam grinds the idle will be smoother as there will be less overlap. This will also help drivability. For cars running boost, esp SC cars these will be the cams to have as one can run wilder cams and cram more charge into the cylinders, with less overlap.

Running a shorter LSA with slightly more overlap can give slightly more mid-range power, but I had to make the call, and when it comes into trying to customise the cams, and changing the offset of the gears etc. This can lead to problems very quickly. And for most people this will be the best LSA.

90 S-4 · 01-14-2010, 03:15 PM

OK, makes good sense, Thanks..

928 GTS · 01-14-2010, 05:22 PM

Well. Most important thing is that group order moves forward. It just would have been nice to have everything imaginable included except maybe latest on the fly cam profile adjustments like new Porsche engines use. Hopefully these cams are at least as good as best factory sets.

hans14914 · 01-20-2010, 08:57 AM

Colin,

Any more info available yet about grinds and/or computer simulated results?

Thanks,
Hans

View Poll Results: Are you going to buy a set
Yes, put me down for 1 or more sets	11	40.74%
Nope, too expensive/complicated for me to consider	7	25.93%
On the fence about it.	9	33.33%
Voters: 27. You may not vote on this poll

01-10-2010, 02:17 PM	#123
928 GTS 928 Uber Alles Join Date: Oct 2008 Helsinki, Finland Posts: 52 Thanks: 0 Thanked 13 Times in 8 Posts	Another great to have feature would be if chain gear(s) could be turned to different positions. This would allow intake cam adjustment in relation to exhaust cam and also gear replacement in case of problems in it. Didn't Sterling have removable gears in one previous setup? __________________ Erkka *1992 928 GTS* 5-speed Oak Green Metallic 22L Classic Gray MX 1992 928 GTS automatic Amethyst Metallic 38A Magenta PZ**

01-10-2010, 08:09 PM	#125
Sterling Resident 928 Mod-aholic Join Date: Sep 2008 North Texas Posts: 137 Thanks: 16 Thanked 14 Times in 12 Posts	congrats for getting this off the ground~! __________________ Sterling 1990 928S4 5spd Cognac Metallic Brown 6.4 liter w/VarioCam Stage 2 coming soon! Custom Paul Champagne Interior & rear seat delete Koni/Eibach, GTS brakes GTS Quarterpanels & no side moldings GTS Mirrors & rear wing delete Fikse FM 10 Wheels "When you see the tree you're about to hit, it's called understeer. When you can only feel and hear it, it's oversteer."

01-10-2010, 08:40 PM	#126
the flying scotsman 928 enthusiast Join Date: Nov 2009 SW Alberta, Canada Posts: 114 Thanks: 0 Thanked 9 Times in 8 Posts	Hi Colin...............I'm new to this party and have some basic questions: are the cams plug and play? do we need new lifters? what benefit is anticipated over stock S4 config? cheers..............Malcolm __________________ Malcolm '88 928 S4 A/T Black/Ivory, 173k kms 928OC Alberta Chapter avatar: Neil Young Theo's diagnostic system for all '87 and newer 928s and other Porsche models.

01-12-2010, 06:37 AM	#129
hilton User Join Date: Oct 2008 Sydney, Oz Posts: 92 Thanks: 13 Thanked 16 Times in 11 Posts	Excellent news. Glad you've pulled it off, and thanks to the invisible private individual with 10 sets! Your commitment is much appreciated. __________________ Hilton 1989 Porsche 928 S4 - no sunroof, manual gearbox, Guards Red, black leather w/ red piping 1987 Porsche 928 S4 - manual gearbox, Grandprix White, black leather, flip-up wing 1987 Porsche 928 S4 - no sunroof, manual gearbox, Guards Red, black leather, flip-up wing

01-06-2010, 07:16 PM	#121
terry91GT User Join Date: Oct 2008 west vancouver b.c. Posts: 24 Thanks: 0 Thanked 0 Times in 0 Posts	WOW those welded cams look bad , what person in thier right mind would have paid money for them ?? maybe some one said they will buff right out with a little clean up . Terry

01-07-2010, 12:06 PM	#122
Lizard Sharkaholic Join Date: Oct 2008 Abbotsford B.C. Posts: 515 Thanks: 3 Thanked 49 Times in 39 Posts	Erkka, You are correct that it would be nice to be able to do that. The cost of machining goes through the roof though (I checked). The other problem is that the 968 have less teeth on the cams to allow for the variocam.

01-10-2010, 04:57 PM	#124
Lizard Sharkaholic Join Date: Oct 2008 Abbotsford B.C. Posts: 515 Thanks: 3 Thanked 49 Times in 39 Posts	Erkka, I do agree with you on this, But Sterlings attempts at this showed that it was not strong enough to be a good idea. That and the extra cost was not worth spending much time trying to reinvent the wheel so to speak. However at this time, we have had a private party step up to the plate, and taken the 10 sets that were previously spoken for! So the cams are a GO! I will leave the buy in for anyone who wishes a set still open until Feb 1st. So if anyone else is interested in a set at the current price ($1600). Please contact me immediately. However the casting process will commence shortly! to all those who have participated and been patient with the minor delay.

01-10-2010, 08:56 PM	#127
Lizard Sharkaholic Join Date: Oct 2008 Abbotsford B.C. Posts: 515 Thanks: 3 Thanked 49 Times in 39 Posts	Hey Malcolm, Yes and no to your first question. I would recommend stiffer valve springs with higher duration cams. This can be done with the heads left on the car. I would also recommend replacing the lifters with the light weight VW lifters. But technically if yours are in good condition then they will not have a problem. As to the benifit, that all depends on the cam grind. A GT+ grind will give a nice boost over stock power, while not killing much torque. Where as a wild grind like a .460" lift and 233 duration will result in a much greater top end power with a drop in bottom end power.

01-11-2010, 02:23 AM	#128
LostInSpace New User Join Date: Aug 2009 London (ex NZ) Posts: 2 Thanks: 0 Thanked 0 Times in 0 Posts	Colin, Great news and thanks once again for the time and effort put into this project Looking forward to the updates and need to starting thinking about which grind to go for.....

01-13-2010, 01:10 PM	#130
Lizard Sharkaholic Join Date: Oct 2008 Abbotsford B.C. Posts: 515 Thanks: 3 Thanked 49 Times in 39 Posts	Agreed 100% Hilton! And I know that we all are seriously looking forward to being able to hold these new jewels in our hands!

01-13-2010, 08:08 PM	#131
90 S-4 New User Join Date: Nov 2009 Posts: 4 Thanks: 0 Thanked 0 Times in 0 Posts	Just thinking out loud here.. since the chain gears can't be made to be adjustable, would there be any benefit in making a change to the Advance/Retard orientation of the gear before it is machined into it's permanent setting. I don't know what Sterling learned while he was making his adjustments, maybe he could chime in as to whether or not a small increase in advance or retard shows any gains. Rather than using the exact factory timing, maybe this could be a place we could pickup a little extra performance ?

01-13-2010, 10:58 PM	#132
Lizard Sharkaholic Join Date: Oct 2008 Abbotsford B.C. Posts: 515 Thanks: 3 Thanked 49 Times in 39 Posts	90 S-4 I have considered the intake timing by adjusting the gears on the chain. The timing selected will not hurt the upper power, and will raise the peak TQ number to a slightly higher range than a set of cams with less lobe seperation angle (LSA). However running with the LSA of the S3 cams this will be good for all cars. The reason is that in wilder cam grinds the idle will be smoother as there will be less overlap. This will also help drivability. For cars running boost, esp SC cars these will be the cams to have as one can run wilder cams and cram more charge into the cylinders, with less overlap. Running a shorter LSA with slightly more overlap can give slightly more mid-range power, but I had to make the call, and when it comes into trying to customise the cams, and changing the offset of the gears etc. This can lead to problems very quickly. And for most people this will be the best LSA.

01-14-2010, 03:15 PM	#133
90 S-4 New User Join Date: Nov 2009 Posts: 4 Thanks: 0 Thanked 0 Times in 0 Posts	OK, makes good sense, Thanks..

01-14-2010, 05:22 PM	#134
928 GTS 928 Uber Alles Join Date: Oct 2008 Helsinki, Finland Posts: 52 Thanks: 0 Thanked 13 Times in 8 Posts	Well. Most important thing is that group order moves forward. It just would have been nice to have everything imaginable included except maybe latest on the fly cam profile adjustments like new Porsche engines use. Hopefully these cams are at least as good as best factory sets. __________________ Erkka *1992 928 GTS* 5-speed Oak Green Metallic 22L Classic Gray MX 1992 928 GTS automatic Amethyst Metallic 38A Magenta PZ**

01-20-2010, 08:57 AM	#135
hans14914 User Join Date: Sep 2009 Posts: 26 Thanks: 0 Thanked 7 Times in 1 Post	Colin, Any more info available yet about grinds and/or computer simulated results? Thanks, Hans

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