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Rennlist Top 10 HP/TQ

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Old 09-19-2012, 05:16 PM
  #1051  
333pg333
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Originally Posted by Paulyy
Not sure what you're talking about?
Just pointing out that it does have C.O.P. in the picture.
As for the looks of it, I agree, the intake has been well made, I just don't like the look of the plenum on a purely cosmetic level and I don't like the colour of the cam covers. The intake looks well built but I had thought the t/b looked decidedly small in the pics.

ps..."Sinking the Slipper" is Aussie for kicking a man when he's down. I was meaning that after the usual jokes about the 928 I was being serious in that I didn't want to seem like I was criticising the car continuously. Also, agree with Duke re the power levels being a little down and that's what I meant about halving the motor, pistons, valves, turbos etc...it's making 400whp as a i4 8v. Of course that's a rudimentary calculation.

I'm also curious how they go about curing our normal issues with headgaskets?
Old 09-20-2012, 02:36 PM
  #1052  
blown 944
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Patrick, my guess on the head gaskets is that they have a more substantial amount of material to keep the block from flexing as bad.

After analyzing many bad head gaskets my conclusion is block flex and cylinder movement are the problems.

My .02
Old 09-20-2012, 06:43 PM
  #1053  
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Neat read. I'll stick with my dependable 280-ish HP.
Old 09-21-2012, 05:01 PM
  #1054  
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Originally Posted by Duke
Sorry to pick on words but the LS coils are by definition CNP

When they are connected by a short coil wire yes. But they are technically here a COP as they are directly connected to the Beru plug piece.
Old 09-21-2012, 05:07 PM
  #1055  
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Originally Posted by Thom
Well yes, this is in this context that I am idly wondering about how long the bottom end will last, and will follow your progress with interest.

If you don't mind me asking, what plugs are you using with the LS coils?
To Clarify this is a gentleman named Todd's car. I know him personally, and can answer somewhat specifically on the Spark plugs -

They are BR8 plugs but with a VERY short resistor, and I believe they normally go into snow mobiles. NGK units.
Old 09-21-2012, 05:09 PM
  #1056  
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Originally Posted by blown 944
I am always sceptical. I've seen too many claims of big power turn out to not put down any mph. I'm not sure of your plans with the car but I'd love to see how much mph you can get.

It sounds like an awesome ride.

I have to ask though, why 21 psi on a 4v. Hell I only run 20ish psi on a home done 8v head and have made over 500 rwhp (determined by trap speed)

Not me - Todd - he is posting in that thread on the 928 forum. Why? Because he can? He also had a 300hp supercharged motorcycle with a VW TypeIV motor in it.

I think when he does go to a strip, it will be difficult to go again, as it will be under 10, and I think thats when you need a cage? I don't know. I have never really pursued the 1/4mile as I like turning and going fast better.
Old 09-21-2012, 05:10 PM
  #1057  
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Originally Posted by blown 944
Patrick, my guess on the head gaskets is that they have a more substantial amount of material to keep the block from flexing as bad.

After analyzing many bad head gaskets my conclusion is block flex and cylinder movement are the problems.

My .02
Stock head gaskets.

Head gaskets break and cylinders move from detonation and uneven combustion. When that is solved, the head gaskets can go back to doing their real job - sealing the combustion chamber for water and oil.
Old 09-21-2012, 05:13 PM
  #1058  
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Originally Posted by BC
Not me - Todd - he is posting in that thread on the 928 forum. Why? Because he can? He also had a 300hp supercharged motorcycle with a VW TypeIV motor in it.

I think when he does go to a strip, it will be difficult to go again, as it will be under 10, and I think thats when you need a cage? I don't know. I have never really pursued the 1/4mile as I like turning and going fast better.


I seriously doubt it'll run faster than a mid 11.

I'd love to be proven wrong though.
Old 09-21-2012, 05:16 PM
  #1059  
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Originally Posted by BC
Stock head gaskets.

Head gaskets break and cylinders move from detonation and uneven combustion. When that is solved, the head gaskets can go back to doing their real job - sealing the combustion chamber for water and oil.
I don't agree. When you really tweak the 4's stuff moves around. Even when the tune is extremely safe I've seen cylinder walk. The v8 will be more resilient due to more structural material.
Old 09-21-2012, 11:25 PM
  #1060  
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Originally Posted by blown 944
I don't agree. When you really tweak the 4's stuff moves around. Even when the tune is extremely safe I've seen cylinder walk. The v8 will be more resilient due to more structural material.
Your 944 blocks have more material, even, at the bottom of the towers.
Old 07-21-2013, 02:34 PM
  #1061  
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Here's one recent pull, not quite on the top of the list:

Old 07-24-2013, 10:39 PM
  #1062  
Richard S
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Todd does it again.... 941rwhp/751tq

https://rennlist.com/forums/928-foru...ar-wheels.html



Rich
Old 07-28-2013, 11:35 AM
  #1063  
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Here's the dyno graph from Todd Tremel's turbo 928:

Old 07-28-2013, 06:16 PM
  #1064  
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That is pretty impressive indeed. Especially as he's running quite a few stock components and did I hear right, the stock gearbox??
Old 07-30-2013, 10:25 PM
  #1065  
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Love Todd's build! Amazing!


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