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Posted by: ThinAir914 Feb 16 2004, 11:02 PM

Well I've gotten started on rebuilding the 2.0L 4 cylinder engine that was in the car when I got it. I got it all torn down last week and on Saturday I got the case in to Competition Engineering to have them ensure that when the lifters went bad they didn't damage the case.

So looking ahead... what would you do to the heads to help with creating a solid daily driver that gets the most output (both horsepower and mpg) out of a stock FI 2.0L with Euro pistons in it?

Posted by: Jake Raby Feb 16 2004, 11:12 PM

Stock rebuild

12mm plug modifcation

42x36 valves

single H/D springs

Posted by: Bleyseng Feb 16 2004, 11:13 PM

Send them to HeadflowMasters and have them rebuilt and ported.

Geoff

Posted by: ThinAir914 Feb 16 2004, 11:29 PM

http://www.audiracvws.com/914porscheracingheads.htm is this the right address for HeadflowMasters?

Posted by: swood Feb 17 2004, 12:02 AM

Yup.

Posted by: Mike9142.0 Feb 17 2004, 09:22 PM

Why 12 spark plugs?

Posted by: Jake Raby Feb 17 2004, 09:28 PM

It reduces the chamber cracks by 90% easily... Its standard for all my 2.0 heads. The 2.0 chamber is terriable for cracks. Get it hot once and its cracked-

Posted by: ChrisReale Feb 17 2004, 09:28 PM

Jake has all the poop on this, but I believe it has something to do with making the spark plug holes stronger so they dont crack as easily, as the 2.0L heads are known to

Posted by: ThinAir914 Feb 17 2004, 10:19 PM

So just exactly what is this? Does this mean you are using a larger size spark plug or is it more like an insert in the head so that the spark plug isn't directly threaded into the head?

Posted by: Dave_Darling Feb 17 2004, 10:37 PM

Smaller spark plug. Weld up the hole in the head, drill and tap for a smaller spark plug. Smaller hole == more material around the hole == less chance of cracking.

Doesn't do jack for the short radius of the exhaust port, which is the other place where 2.0 914 heads like to crack...

--DD

Posted by: ThinAir914 Feb 17 2004, 10:43 PM

Does the smaller hole limit your selection of plugs or are you still able to get plugs in the correct temperature range?

Posted by: Jake Raby Feb 17 2004, 11:54 PM

A Ducati motorcycle uses the exact same heat range as my engines do... They are 12mm and available in NGK

Posted by: Zeke Feb 18 2004, 12:19 AM

There isn't one part of the type4 that Jake hasn't fooled with. Ducati plugs. Next thing will be Volvo pistons, Mecedes rods, an oil pump from a Caterpillar, heads from a 911 and EFI from some GM machine.

Posted by: Jake Raby Feb 18 2004, 12:31 AM

There are TONS of things that we have not learned yet.. I learn atleast one big thing a week on average... When you stop learning- its because you are dead or dying!

The TIV has many mysteries- just wait till my new heads are done and the key to the power door will be opened really wide- and they'll cool too!