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The Magic 200 HP for NA?

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Old 04-20-2015, 03:05 PM
  #166  
mattipuh
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Yep, here's mod list
- Wössner 11.5:1 Pistons
- 944 Turbo forged rods
- 2.5ltr engine block with steel sleeves
- Balanced FW and crankS.
- vibration balancers removed from the engine
- Jenvey ITB's (Pipercross 4-1 foam filter, airbox was removed)
- Tatech 32Lite engine management
- Custom camshaft
- Some kind of afterm. exhaust manifold + exhaust, dunno what it is (from prev. owner)
- new fuel injectors, just because didn't want to use old ones..
- Adjustable cam gear

All things short - you can make lots of hp with good cam, ITB and adjustable engine management.
All extra stuff is for engine longeivity. without ITB I'd say you would get 183-185hp, ITB gives you an additional 10hp.
there might be still some hp's left in engine - who knows..
Old 04-20-2015, 11:36 PM
  #167  
333pg333
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Pics of motor please!
Old 04-21-2015, 03:05 AM
  #168  
mattipuh
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Check our FB, there's lots of pics.
Old 04-21-2015, 08:58 AM
  #169  
Per vers
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Hello Matti
I think you are right on the spot. about the 183 hp.
That is about the same number that i got. With 280* cam, Port job and some adjustments.

Regards Per
Old 04-21-2015, 09:19 AM
  #170  
mattipuh
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Discussed today with one race team mech. that has stock intake, but modded head + cam + engine mgmt. they've got 195hp, that's without ITB. Maybe head modding is for benefit too..`??

Measurement has been done in different dyno so dunno how comparable the results are though...
Old 04-21-2015, 12:19 PM
  #171  
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I cut my plenum chamber open. and spent 4 hours with a grinder.
The inside of the runners look like somthing casted in Russia, during the coold war ;-)
The runner for cyl. 1 has a very sharp turn. I cut it more open. And widened all the runners (1,5 mm.) and made them more conical.
At last i tig welded the plenumchamber back together.

My head modding was done after a weeks of surfing on the net, for Pictures of 8v heads.
The head casting is as bad as the intakemanifold. My head had a 1mm. offset, betwen valve seat and indtake. and the casting was wery rough.

Regards Per
Old 04-21-2015, 05:20 PM
  #172  
333pg333
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400+ bhp from 16v n/a motor.

https://rennlist.com/forums/924-931-...r-400hp-8.html
Old 04-22-2015, 03:22 AM
  #173  
mattipuh
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Patrick - that's heavy off topic as we were discussing how to reach 200hp.
Cool build anyways. 3.0ltr 16V gives more, of course..
Old 04-22-2015, 03:48 AM
  #174  
333pg333
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Always nice to see what can be achieved Matti! We're hoping for about 700bhp from our 2.5ltr 8v @ 8000rpm. Always good to push the envelope. :-)
Old 04-22-2015, 03:54 AM
  #175  
mattipuh
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it is. ,)
Old 04-22-2015, 05:55 AM
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333pg333
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...

Last edited by 333pg333; 04-22-2015 at 01:20 PM.
Old 04-22-2015, 09:31 AM
  #177  
Noahs944
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Originally Posted by mattipuh
Yep, here's mod list
- Wössner 11.5:1 Pistons
- 944 Turbo forged rods
- 2.5ltr engine block with steel sleeves
- Balanced FW and crankS.
- vibration balancers removed from the engine
- Jenvey ITB's (Pipercross 4-1 foam filter, airbox was removed)
- Tatech 32Lite engine management
- Custom camshaft
- Some kind of afterm. exhaust manifold + exhaust, dunno what it is (from prev. owner)
- new fuel injectors, just because didn't want to use old ones..
- Adjustable cam gear

All things short - you can make lots of hp with good cam, ITB and adjustable engine management.
All extra stuff is for engine longeivity. without ITB I'd say you would get 183-185hp, ITB gives you an additional 10hp.
there might be still some hp's left in engine - who knows..

Sounds great man. I like your car.

Q: -What did you do to "plug" the bores after removing the balance shafts?
-Any chance you would be willing to share the part numbers of the ITB components you used?
Old 04-22-2015, 08:43 PM
  #178  
Noahs944
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Why does ITBs give the best power?

What about atomization, is it improved over stock?
Old 04-22-2015, 09:09 PM
  #179  
odurandina
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there's always the 968 engine option.

but if you're going to go to that much trouble,

maybe just do like with the Chevy Veeega of old.....
Old 04-22-2015, 11:39 PM
  #180  
shakazulu720
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Im just caching up but If we really did treat these cars like hondas there would be a big bottle of NOS in every one, as far as a 200 hp n/a thats probabablly the quickest (and cheapist in the short run) way to do it, pull a few degrees of timing and add 75 hp shot of Nitrous oxide


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