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first full ITB mock up, and getting closer to dropping the motor in

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first full ITB mock up, and getting closer to dropping the motor in

 
Old 03-18-2019, 09:09 AM
  #16  
Strosek Ultra
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Originally Posted by SwayBar View Post
How is the pictured engine running?

I see it has a stock oil-pan, what sort of oil-control does it utilize?
If you are referring to the yellow Havik car I do not know much. The Belgium team were active in road racing a number of years ago. I do not think the race anymore.
Ňke
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Old 03-18-2019, 10:05 AM
  #17  
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There will certainly be room for longer runners insidse the airbox. Louie and Don Hansen ran different lengths in similar engines as mine with little to no differences. Adam B is going to run factory S62 runners with a similar strokeir engine, and I can investigate this as well. However some of the BMW racing crowd actually replaced the stock S62 intake with aftermarket ITB's and shorter runners and made more power.....
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Old 03-18-2019, 10:51 AM
  #18  
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Sterling, for best flow straight runners is the optimum but it is a problem to find room under the hood. Another question is at what rpm shall the intake duct be tuned? I do not know how high you expect to spin your engine? Peak power probably at around 7500 rpm, peak torque probably at 6000 rpm. For a hot street engine I would tune for peak torque which will be a tuned length of 38 cm or 15 inches. Shorter length will add peak power but shorter than 33 cm or 13 inches will probably not bring anything more.
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Old 03-18-2019, 11:45 AM
  #19  
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once the engine is in and I know how much room I have to work with for my airbox, I will decide based on tuning which runners I will use.
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Old 03-18-2019, 03:02 PM
  #20  
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Wow, just wow.
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Old 03-19-2019, 11:56 AM
  #21  
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Put Greg's oil pan gasket on before you button it all up
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Old 03-19-2019, 09:48 PM
  #22  
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Originally Posted by Tony View Post
Put Greg's oil pan gasket on before you button it all up
Unfortunately timing won't work out, and I'm on a tight timeline.
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Old 03-20-2019, 12:48 AM
  #23  
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What Itb's are they ? What brand?
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Old 03-20-2019, 05:23 AM
  #24  
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That looks amazing, the headers are making me jealous. Iím looking forward to hearing how it drives once youíve got it installed

Ive got a modified S62 engine and Iíve followed some of the developments made. I havenít seen anyone post dyno results with short runners fitted, except when supercharging. Not being any kind of expert I stand to be corrected, it seems most S62 engines even when tuned and modified still keep the longer runners.
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Old 03-20-2019, 07:07 AM
  #25  
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We turbocharged a bone stock S62 engine using a custom single TB intake with much shorter than stock runners and made 500 hp / 830 N.m on E85 and 5psi of boost.
The engine might have made more torque with stock length runners but may also have melted its chocolate rods, and 830 N.m was already more than enough for an emptied car run in drift events.
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Old 03-20-2019, 09:58 AM
  #26  
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Originally Posted by justaguy View Post
What Itb's are they ? What brand?
They are made by TWM which is now Borla Induction. Not sure of the model. I'm wanting to say 3000 series.
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Old 03-20-2019, 12:53 PM
  #27  
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FWIW you can still make a lot of power with practically *no* runner length.
its just that longer runners can help the overall engine make more power in certain rpm ranges (which can be balanced against other things to raise and broaden the power curve).

FWIW look at the early 90s GM LT1 engine...total length from valve seat to "plenum" was maybe 8".
but due to the decent heads, mild cam and big displacement it still makes a nice power output (below is at the wheels).
any 928 with another 50+ CFM in the heads over the LT1 will be a beast.

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Old 03-20-2019, 11:41 PM
  #28  
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Cam covers buttoned up, and sump bits arrive tomorrow. Planning on closing up sump tomorrow night. Engine should be going in on Saturday. Fingers crossed.
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Old 03-22-2019, 02:23 PM
  #29  
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sump bits arrived today. If they fit and I can get the loctite set on the pan stud's then I can button it up tomorrow and get it into the car finally.
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Old 03-23-2019, 12:04 PM
  #30  
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Pan spacer installed, and loctited the studs in yesterday. Drilled and tapped pan for sump bits, and some clearancing followed by cleaning and more cleaning should result in an engine ready to drop in this afternoon.
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