Mahle, Arias, Woessner or JE pistons best?
10-11-2011, 01:45 PM
#91
Three Wheelin'
Sorry 44 is to general ! I did mean the S2/968 blocks. It looks like it's just the 968 though and the squiters are in the block?
Last edited by schip43; 10-11-2011 at 02:38 PM.
10-11-2011, 01:53 PM
#92
Three Wheelin'
No squirters in the 44 Turbo block, they might be in the S2 block but I'm not 100% positive on that.
With the advent of thermal coatings are oil squirters still needed?
With the advent of thermal coatings are oil squirters still needed?
10-11-2011, 01:58 PM
#93
Nordschleife Master
Only the 968 block has the squirters (that's why I stated the difference).
It's always good to cool the pistons. Coating is just a thermal insulator while the oil actually cools. I have both in my engine
It's always good to cool the pistons. Coating is just a thermal insulator while the oil actually cools. I have both in my engine
10-11-2011, 02:27 PM
#95
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I haven't read this thread until now. It was exactly what I expected it to be. There's on just like it on EVERY forum for any car. YET, I still found myself reading it. I guess everyone loves drama.
BTW almost everyone had something useful to say none the less.
BTW almost everyone had something useful to say none the less.
10-11-2011, 02:35 PM
#96
Drifting
10-11-2011, 03:33 PM
#97
Drifting
Hi George
I can assure you that BMW did have problems with their Nikasil coated engines. We have a BMW specialist 2 doors down who has been in business since the eighties. He has told me that on more occasions then he cares to admit(being a BMW fanatic) that he was replacing Nikasil blocks in the M60 and M52's. He does mention that his owns opinion was that coolant was the culprit but as he says its his opinion. What is a fact though is that when the new sleeved blocks came back there were no more issues to be had with said engine. So who really knows, it may have even been the way the blocks were coated or the oil used or the coolant used. either way when the nikasil was removed it fixed the issue BMW had.
Was there a particular reason you chose Nikasil over Alusil, seems like a lot of work to get the block coated when you can get pistons to suit the alusil. To be absolutely truthful if we had the choice i would get custom Mahle pistons to suit but unlike Wossner you cannot order just 1 set. And the Wossners seem to be holding up just fine on 1.5bar(22 psi) on the track with E85 and vitesse
I can assure you that BMW did have problems with their Nikasil coated engines. We have a BMW specialist 2 doors down who has been in business since the eighties. He has told me that on more occasions then he cares to admit(being a BMW fanatic) that he was replacing Nikasil blocks in the M60 and M52's. He does mention that his owns opinion was that coolant was the culprit but as he says its his opinion. What is a fact though is that when the new sleeved blocks came back there were no more issues to be had with said engine. So who really knows, it may have even been the way the blocks were coated or the oil used or the coolant used. either way when the nikasil was removed it fixed the issue BMW had.
Was there a particular reason you chose Nikasil over Alusil, seems like a lot of work to get the block coated when you can get pistons to suit the alusil. To be absolutely truthful if we had the choice i would get custom Mahle pistons to suit but unlike Wossner you cannot order just 1 set. And the Wossners seem to be holding up just fine on 1.5bar(22 psi) on the track with E85 and vitesse
I don’t know who did BMW’s Nikasil coating work. Porsche used Mahle, and didn’t have issues like BMW. Here is a good article for those interested: http://www.electrosil.com.au/ElectrosilNikasil.pdf
10-11-2011, 04:14 PM
#98
Three Wheelin'
Tons of good information here and I got the basics...get a short block done form Lindsey or Chris White and let them sweat the details! No reflection on George's choice intended of course!
And aparently the sleeve thing seems to work out ok and I know Broadfoot Racing builds sleeved motors..but short of camping out on there lawn, I'd be cautious of actually getting the short block; if dealing with them!
If I can go slightly off top..The Chevy Vega used an Aluminum block, and it was a piece of crap, the motor wore out before the tires! Anybody know what was up with that!
And aparently the sleeve thing seems to work out ok and I know Broadfoot Racing builds sleeved motors..but short of camping out on there lawn, I'd be cautious of actually getting the short block; if dealing with them!
If I can go slightly off top..The Chevy Vega used an Aluminum block, and it was a piece of crap, the motor wore out before the tires! Anybody know what was up with that!
10-11-2011, 05:38 PM
#99
Drifting
Tons of good information here and I got the basics...get a short block done form Lindsey or Chris White and let them sweat the details! No reflection on George's choice intended of course!
And aparently the sleeve thing seems to work out ok and I know Broadfoot Racing builds sleeved motors..but short of camping out on there lawn, I'd be cautious of actually getting the short block; if dealing with them!
If I can go slightly off top..The Chevy Vega used an Aluminum block, and it was a piece of crap, the motor wore out before the tires! Anybody know what was up with that!
And aparently the sleeve thing seems to work out ok and I know Broadfoot Racing builds sleeved motors..but short of camping out on there lawn, I'd be cautious of actually getting the short block; if dealing with them!
If I can go slightly off top..The Chevy Vega used an Aluminum block, and it was a piece of crap, the motor wore out before the tires! Anybody know what was up with that!
Garrity probably would not build a short block for a 951 unless you were a current customer. They might do one custom 951 every other year. Most of their racing work is with the newer 911's, and other cars.
If I could go back in time, I would have purchased a 996 or 997 TT, done about 25K in mods and called it a day. The 996/997 TT cars will run 500whp all day long with more available, and are currently cheaper than making a 951 do the same.
10-11-2011, 07:12 PM
#100
Three Wheelin'
10-15-2011, 09:50 AM
#102
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10-22-2011, 06:25 PM
#104
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@George: Where do you put in the squirters on a 944 block? Anyone got pictures of how they have done this mod as I am very interested in being cautious with my new build :-)
Cheers
Niels
Cheers
Niels
10-22-2011, 07:25 PM
#105