Q ?? 4,5L turbo vs 4,5L-S the same heads
#16
Former Vendor
Here's my version and 5.3 liters worth.. LN Engineering Nickies. I have yet to build a single Cayenne engine using stock technology, or even a stock bore size. My very first one went straight to 5.1L and I never looked back.
While the block of the S may be Alusil as I mistakenly posted as Lokasil earlier (had my head up my *** in M96 engines) the S engines do have significant wear issues that do not impact the Turbo engines. We find this mostly in colder climates and a couple of Canadian dealerships have sought out our development to solve the issues that not even new crate engines could solve in the Canadian climate.
Want 100 extra HP? This is the package, it has a ton of torque across the entire RPM range and screams in the top end, too :-)
While the block of the S may be Alusil as I mistakenly posted as Lokasil earlier (had my head up my *** in M96 engines) the S engines do have significant wear issues that do not impact the Turbo engines. We find this mostly in colder climates and a couple of Canadian dealerships have sought out our development to solve the issues that not even new crate engines could solve in the Canadian climate.
Want 100 extra HP? This is the package, it has a ton of torque across the entire RPM range and screams in the top end, too :-)
#18
Drifting
#19
Drifting
How big do you believe the scoring issue to be? There are close to 300,000 M48 engines out there and not too many unique internet posts on the problem which also seems to be mainly on 2004s. If you google any marque along with "bore score" you will find something.
How many real world issues have you seen?
#20
Drifting
OK. But why is the turbos holding up better than the -S if it is the same... Here is where i would like to send a block http://www.928motorsports.com/services/uschrome.php .. Oh look the cylinder plating is 3 times thicker than the oem.
Tommy
Tommy
Why would a manufacturer go to the expense of producing a monolithic hyper eutectic alloy block and then coat it? Alusil blocks can be repaired by boring, honing and finally lapping to undercut the aluminium and expose the silicon.
#21
Drifting
How big do you believe the scoring issue to be? There are close to 300,000 M48 engines out there and not too many unique internet posts on the problem which also seems to be mainly on 2004s. If you google any marque along with "bore score" you will find something.
How many real world issues have you seen?
How many real world issues have you seen?
#22
Former Vendor
The vast majority of scoring issues are found in the S engines and in colder climates. One thing that adds to this is the fact that there's only one piston offset in the engine, which puts one bank of cylinders more susceptible to skirt wear. The other issue is running clearances that were not altered for the introduction or forged pistons that have different expansion rates than their cast counterparts.
The Canadian dealerships we have done the work for all say that the replacement engines exhibit the same issues as the OE engines and can lead to a similar condition in what is sometimes a fairly short period of time.
I've never assembled a single Cayenne engine and retained the stock bores, OE alusil or not, I always strive to use our own technology when solving problems. When building S engines I equip them with piston squirters like the Turbo engine would have and upgrade much more while I am inside. Of all the modern Porsche engines we have developed NOTHING is as well built as the Cayenne engine, in fact its the only modern Porsche foundation that impresses me in factory form.
The Canadian dealerships we have done the work for all say that the replacement engines exhibit the same issues as the OE engines and can lead to a similar condition in what is sometimes a fairly short period of time.
I've never assembled a single Cayenne engine and retained the stock bores, OE alusil or not, I always strive to use our own technology when solving problems. When building S engines I equip them with piston squirters like the Turbo engine would have and upgrade much more while I am inside. Of all the modern Porsche engines we have developed NOTHING is as well built as the Cayenne engine, in fact its the only modern Porsche foundation that impresses me in factory form.
#23
As an engine builder, can you comment on the wear state of the internal engine components regarding engines that used Mobil 1 or other brands of oil.
#24
Former Vendor
So I am completely biased on the topic and my insight only causes conflicts in open forums.
#25
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AAAh . Great input about the scooring -S Engines. I ordered one of these today just trying to save my -S block a Little longer . http://www.lnengineering.com/revisedspofa.JPG ... A while ago i changed from Mob 1 5-50 .and bought a big jug 5,3 Gallon Mob 1 0-40 .
My change interval has Always been 16500 miles .. Maby ill change brand then. Always thought M 1 was the top of the line ?? I even bought an boore scope just to have Control of the scooring issue. But i Think its hard to see exactly whats going on on the walls . I took it to the Porsche chop and got a new Engine software ,and asked them to check the Engine with a boore scope. They said that they didnt have the experiense to determine if it was scooring or oil lines from the pistone rings. eehh . The Cayenne Engines they have changed was no misstake about what was going on because of the big knocking sound when the customer came in with the car..
reg Tommy
My change interval has Always been 16500 miles .. Maby ill change brand then. Always thought M 1 was the top of the line ?? I even bought an boore scope just to have Control of the scooring issue. But i Think its hard to see exactly whats going on on the walls . I took it to the Porsche chop and got a new Engine software ,and asked them to check the Engine with a boore scope. They said that they didnt have the experiense to determine if it was scooring or oil lines from the pistone rings. eehh . The Cayenne Engines they have changed was no misstake about what was going on because of the big knocking sound when the customer came in with the car..
reg Tommy
Last edited by tommyS; 11-27-2013 at 04:41 PM.