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  #1336  
Old November 16th 2013, 17:15
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A hint of some of the parts that came in today

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  #1337  
Old November 16th 2013, 17:22
spannermanager spannermanager is offline
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finer thread pitch= more clamping force= use less torque for same clamping force.
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  #1338  
Old November 18th 2013, 05:48
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mmmmmmmmmmm pauter, engine jewelery at its best.
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  #1339  
Old November 18th 2013, 13:13
70Turbobug 70Turbobug is offline
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My guess this one is going to be quite a bit more aggressive? Will you be using the same Borg Warner twin scroll or are you going with a complete new set up?
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  #1340  
Old November 19th 2013, 14:13
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Quote:
Originally Posted by 70Turbobug View Post
My guess this one is going to be quite a bit more aggressive? Will you be using the same Borg Warner twin scroll or are you going with a complete new set up?
Good guess!

Yes, I will use the same twin scroll 'small' Borg turbo I still have left from the old engine.
The new engine will also be equipped with these newly developed billet heads from Thorsten Pieper. Should be done before years end




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  #1341  
Old November 20th 2013, 06:57
70Turbobug 70Turbobug is offline
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I have heard from Thorsten's T4 head project a couple of months ago, but didn't want to spill the beans. It is top quality for sure just like the oxyboxer heads. I would think 500-550hp with the same reliability as your previous engine is really possible.
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  #1342  
Old November 20th 2013, 14:35
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Drool....

Jason
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  #1343  
Old November 20th 2013, 22:55
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Originally Posted by Wally View Post
A hint of some of the parts that came in today

Congrats Walter.

Hay,I was looking at Pauters website,I noticed that he's making his rockers without needle bearings or bushings for shaft support; just aluminium rockers to shaft. I wonder why he has not stated why. This is a sharp turn from needle bearings, bushings, to nothing

What is your choice for rods?
How about cooling system, upright?
Nice work Walter
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  #1344  
Old November 21st 2013, 05:40
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Hay,I was looking at Pauters website,I noticed that he's making his rockers without needle bearings or bushings for shaft support; just aluminium rockers to shaft.
They are not without bushings and not 'just aluminium rockers to shaft' as you stated. What gave you that idea?



I already have the rods, they were a test set from R&R through Jake. Here coupled to a set of 77,50m pistons from the 1200T project (testfit for the 20mm pins):
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  #1345  
Old November 21st 2013, 07:40
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Quote:
Originally Posted by Wally View Post
They are not without bushings and not 'just aluminium rockers to shaft' as you stated. What gave you that idea?



I already have the rods, they were a test set from R&R through Jake. Here coupled to a set of 77,50m pistons from the 1200T project (testfit for the 20mm pins):
Good morning Walter, sorry I mis read pauters web site, only the rockers using needle bearings, will not have any bushing just hardened aluminum.

Those rods look plenty strong enough.
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  #1346  
Old November 21st 2013, 07:50
70Turbobug 70Turbobug is offline
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Nice parts! What cylinders will you be using? Interesting that you chose to go to a 98mm bore, I would have thought that the heads were made for a minimum 100mm bore. I can understand wanting to minimize knock but 98 is somewhat exotic, hence the question on what cylinders you will use. It's good to see you back, always loved your projects and inspirates me to keep miy project going!
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  #1347  
Old November 21st 2013, 09:02
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The yet-to-be-determined bore (98 or 100) is still up in the air, but best chance is indeed 98mm. Knock threshold isn't a consideration on that aspect, trust me. I am not convinced bore has that high a correlation with knock in our application anyways.
If it turns out to become 98mm bore, I'll tell the story behind why lateron
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  #1348  
Old November 21st 2013, 11:08
70Turbobug 70Turbobug is offline
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Knock threshold isn't a consideration on that aspect, trust me.I am not convinced bore has that high a correlation with knock in our application anyways.
I have the same opinion on that! There are so many other factors that cause knock that you canīt just pin point it on a large bore. An engine knocks in the low rpm range,so imho usually a poor head porting/cam combo and/or tuning will be the cause.Performance wise,I donīt think 2mm more or less bore will matter anyway.
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  #1349  
Old November 21st 2013, 11:16
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Originally Posted by 70Turbobug View Post
Performance wise,I donīt think 2mm more or less bore will matter anyway.
My thoughts exactly. The 100cc difference of the 2mm bore will make only a very small difference in spool, so the better/stronger cylinder (and costs) will play a more important role
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  #1350  
Old December 24th 2013, 05:16
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The new bare T4 billet heads are here!




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