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PostPosted: Tue May 04, 2010 5:11 am 
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Joined: Fri Feb 16, 2007 2:43 pm
Posts: 8
Location: Athens
Hey everyone,
I am running a 1.6 8v efi vitara engine in my Samurai, and I want to calculate lengths and diameters for a tuned (4-2-1) exhaust.
What I need are the stock numbers for the camshafts (1.3 8v efi 1298CC) and (1.6 8v efi 1590cc)
I have found somewhere else lift and duration from superfly, but I need more specific things, that is for the exhaust BBDC and ATDC.
I know that the other way would be to measure these on the engine, but considering the fact that measurement=error, I would prefer to have them from a trustworthy source.
Also if anyone has any suggestions on formulas/sites that will help with calculating the actual length/diameter of the exhaust they would be most welcome!

It is a sensitive issue, (I cannot find that info anywhere on the net especially for the 8v vitara) so I am hoping someone here has allready done this HW!

Thank you all!


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PostPosted: Tue May 04, 2010 7:00 am 
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Joined: Sun Feb 23, 2003 4:16 am
Posts: 8033
Location: Ontario, Canada
The intake centerline is 110 degrees, and the lobe centers are 110 degrees.
I told you what the duration is, so calculate back to determine the numbers you want.

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PostPosted: Tue May 04, 2010 9:51 am 
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Joined: Fri Feb 16, 2007 2:43 pm
Posts: 8
Location: Athens
That's for the 1.6 8v efi, right?!
thank you!


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