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Performance Modifications for the NG900 / Old 9-3 This forum contains PERFORMANCE related Q&A's for the NG900 and 9-3. This may also include suspension.

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Topic Review (Newest First)
08-11-2009 11:34 AM
av_dumitrascu
Wossner pistons

Are the Wossner forged pistons made of alloy/aluminium?
If "yes", it might be because this way, if something goes wrong, the pistons get fucked, not the engine block...quite good ideea!
Any thoughts?
08-01-2009 01:22 PM
daveship
Quote:
Originally Posted by DrewP View Post
Let's be fair.

I know of plenty more than 10 which have failed while using other oils as well. That doesn't necessarily address the issue, is all anyone is saying.

You can correllate almost anything you want and draw conclusions about it, it doesn't necessarily mean the correllation is really there.

Best,
Drew
Agreed.
08-01-2009 10:27 AM
DrewP Let's be fair.

I know of plenty more than 10 which have failed while using other oils as well. That doesn't necessarily address the issue, is all anyone is saying.

You can correllate almost anything you want and draw conclusions about it, it doesn't necessarily mean the correllation is really there.

Best,
Drew
07-31-2009 08:06 PM
daveship
Quote:
Originally Posted by sleepy7666 View Post
Multiple areas of data in agreement constitutes proof. Eye witness is just that. One perspective.

If this was a trial... You would lose. Until you back up your perspective and claims with data and documentation...they're only that.... claims from 1 person.

I know of several cars (more than 10) who's engines have failed using mobil 1 0W-40.... enough evidence (areas of data in agreement) to make me think "hey, there may be a better alternative than mobil 1 0W-40...maybe I'll try something else." I get Mobil 1 for free and don't use it.

Of course, YOU, can choose whichever oil you want. Thank you for your valuable input Judge Judy.
07-31-2009 06:35 PM
Sleepy7666
Quote:
Originally Posted by daveship View Post
Amazing...another spun bearing using Mobil 0W-40.

It's amusing to see people condemning Tikka for choosing against 0W-40 based on what he has seen with his own car and what he has read or heard yet they, themselves, choose not to use 0W-40 in their own vehicles and instead use other "cheaper" "better" alternatives.

I would suggest going with a 40W oil as opposed to the 30W in which you are planning to use.

Good Luck,
Dave
Multiple areas of data in agreement constitutes proof. Eye witness is just that. One perspective.

If this was a trial... You would lose. Until you back up your perspective and claims with data and documentation...they're only that.... claims from 1 person.
07-31-2009 01:52 PM
daveship Amazing...another spun bearing using Mobil 0W-40.

It's amusing to see people condemning Tikka for choosing against 0W-40 based on what he has seen with his own car and what he has read or heard yet they, themselves, choose not to use 0W-40 in their own vehicles and instead use other "cheaper" "better" alternatives.

I would suggest going with a 40W oil as opposed to the 30W in which you are planning to use.

Good Luck,
Dave
07-31-2009 10:28 AM
av_dumitrascu
Quote:
Originally Posted by GenuineSaab View Post
I have run Mobil 5-30 7500 since build in my Viggen. Rev limiter has been 7200 and power 400-500 for most of its life. The oil is not the problem.

Piston ring break-in is tricky if the bore is not prepped right. You can glaze the rings or bore and then it is a problem. I will write a long version on trolltuner.

Pistons should not have been a problem at 280hp with a stock turbo.
Well, be fucked if I know what happened...As I already told here (on another topic), it was not my pistons, but a crankshaft bearing...so stock pistons: still good!
Will they be holding for 300 something HP? Dunno...I`m putting Wossners.
Next will be a B234 swap. As far as I hear, those are indistructible!

and yes, I am switching to 5W-30. Thanks for advise, Nick & Saab9-3Se!
You are SAAB saviours!

P.S. I am going to start a topic with B234 swap from B235...I`m waiting for your oppinions!

Lucian from over the Ocean!
(still learning from trial and error...even if that costs!)
07-28-2009 06:59 AM
Saab9-3se
Quote:
Originally Posted by GenuineSaab View Post
I have run Mobil 5-30 7500 since build in my Viggen. Rev limiter has been 7200 and power 400-500 for most of its life. The oil is not the problem.

In the racecar it ets 10-40 castrol GTX and the bearings have looked nice every time we pull it apart. We have steady state mapped it at 7000rpm on the dyno along with some high rpm 7k+ lifter durability for minutes.

Piston ring break-in is tricky if the bore is not prepped right. You can glaze the rings or bore and then it is a problem. I will write a long version on trolltuner.

Pistons should not have been a problem at 280hp with a stock turbo.
Thanks Nick, always enjoy hearing about tear downs as they truly show how an engine is holding up.

As per what oil i am using. Well, the best oil analysis I had was with Motul 5w40 (posted at bobistheoilguy.com) although the Redline 0w40 I ran during the winter months held up very well also. Currently I am running Redline 10w40 and will do an analysis on it in a month or so.

It all depends on what you are looking for in a oil. Do you want long oil change intervals, cheapest with most protection etc. Then you can decide on what oil to use.
07-28-2009 06:31 AM
GenuineSaab I have run Mobil 5-30 7500 since build in my Viggen. Rev limiter has been 7200 and power 400-500 for most of its life. The oil is not the problem.

In the racecar it ets 10-40 castrol GTX and the bearings have looked nice every time we pull it apart. We have steady state mapped it at 7000rpm on the dyno along with some high rpm 7k+ lifter durability for minutes.

Piston ring break-in is tricky if the bore is not prepped right. You can glaze the rings or bore and then it is a problem. I will write a long version on trolltuner.

Pistons should not have been a problem at 280hp with a stock turbo.
07-28-2009 06:25 AM
av_dumitrascu
what, then?

Quote:
Originally Posted by Tikka View Post
Yeah, I was using 0w-40 up until the last oil change when it poured out like water...I'm never going back to that.
so what are you using now, better than Mobil 1 0W-40?
or this is off-topic?
07-28-2009 03:33 AM
Saab9-3se
Quote:
Originally Posted by Tikka View Post
Unsure, I don't have a gauge.
So you're basing the quality of the oil by how it looks visually when it comes out, no UOA, no oil pressure readings etc.... I wouldnt bash an oil when there is lots of documentation to say its a great oil

Anyways, sorry to the OP for getting off topic, I wont be discussing oil in this thread anymore.
07-27-2009 06:12 PM
Tikka Unsure, I don't have a gauge.
07-27-2009 04:49 PM
Saab9-3se What was your oil pressure gauge reading when you ran the oil?
07-27-2009 04:34 PM
Tikka This was fairly warm, but oil needs some viscosity to provide proper lubrication.

I'm not sure there is any conclusive evidence the oil destroyed the engines but there's quite the correlation between blown engines and mobil 1 0w-40. I know of two or three including that one jak built a couple years ago from the internet alone. I'm sure others with more shop experience will chime in. But like I said, I swore by it until i saw how thin it got from heat degradation.
07-27-2009 03:43 PM
Saab9-3se Any proof that mobil 0w40 destroyed the engine? Lots of UOA to show mobil 0w40 is a great oil. It is a factory fill for Porsche 911 turbo... I don't use the oil myself as I get better oil for cheaper but I highly doubt the oil destroyed the engine.

As for it pouring out like water, was this when hot or cold. Being a 0 wt you want itnto be as thin as possible when at ambient temps, less cold start wear. All oils pour out like water, even the 20w50 in my mgb
07-27-2009 03:33 PM
Tikka
Quote:
Originally Posted by daveship View Post
not the first engine to fry using 0w-40....and won't be the last.
Yeah, I was using 0w-40 up until the last oil change when it poured out like water...I'm never going back to that.
07-27-2009 03:29 PM
daveship
Quote:
Originally Posted by av_dumitrascu View Post
0W40 full synthetic, some 1000 km before changed. I cannot blame the oil. Just my 2 cents, though!
Lucian (from over the Ocean)
not the first engine to fry using 0w-40....and won't be the last.
07-27-2009 12:23 PM
Saab9-3se Very highly doubt it was the oil, just curious.
07-27-2009 12:14 PM
av_dumitrascu
best

Quote:
Originally Posted by Saab9-3se View Post
out of curiosity AV dumitrascu, what oil were you running and oil change interval when your pistons fried ?
0W40 full synthetic, some 1000 km before changed. I cannot blame the oil. Just my 2 cents, though!
Lucian (from over the Ocean)
07-27-2009 11:09 AM
Saab9-3se out of curiosity AV dumitrascu, what oil were you running and oil change interval when your pistons fried ?
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