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Posted by: CTDan914 May 27 2013, 04:26 AM

How does a 75 914 4 cylinder motor compare to a 75 VW motor? How do they differ if at all?
Dan

Posted by: smveril May 27 2013, 06:43 AM

The heads are different. The bus motor has the oil filler tube in a different location. My 76 bus motor has 85 horsepower and 85 ft-lbs trackback torque (measured via a dyno) and my 73 914 2 liter is rated at 95 horsepower.

Posted by: morph May 27 2013, 07:38 AM

I put a bus motor in my car to get by for awile.
it had no top end..i had to block off the oil fill at the base of the motor.i also had to drill a new dip stick hole at the top of the block.you can use a type 1 throttle tube that goes though the fan shroud.as a dip stick tube.

Posted by: CTDan914 May 28 2013, 06:13 PM

cool, good to know. different heads and more HP.

I was wondering what Porsche would have done if anything to make the motor different than a standard VW motor. I cam from a family that had two bugs and I had a 61 Karmann Ghia and this 914 2.0 motor isn't the same but I didn't know how it was different.

Dan

Posted by: Dave_Darling May 28 2013, 07:03 PM

The Ghia had a Type I, or possibly a Type III if it was a T3 Ghia. (Very different looking than the standard T1 Ghia.)

The 914 and the later Buses used Type IV engines. Larger, heavier-duty all around than the Type I and Type III.

--DD

Posted by: CTDan914 May 29 2013, 06:46 AM

Thanks DD. I very new to the 914 world and have a lot to learn about them.

Posted by: Bleyseng Jun 3 2013, 09:28 AM

Yes, the bus type 4 have a cam that tops out at 4500rpms so trying to rev it is hard. The 914 2.0 has a better cam that wants to rev to 5500rpms.
The 914 2.0l heads are the big difference in making the hp with bigger valves and different plug angle.

Posted by: nathansnathan Jun 3 2013, 12:00 PM

Again, the 914 book says they are all the same cam - they all have the djet cam. All the type 4 buses had the same djet cam, carbed or not, as did all 914's. There may be a mythical "early carb cam" in very early 411's(?) -they are the same other than that. -A lot of misinformation on stock cam specs out there.

Posted by: aircooledtechguy Jun 3 2013, 04:05 PM

The only heads that are different then a VW head are the Porsche 914 2.0L heads. The 1.7/1.8L heads are virtually identical in every aspect, (including valve size), but Porsche's (and 411/412 VWs) were drilled and had nipples installed for head breathers. Buses never had these, but the boss on the rocker box is there in the casting.

Porsche's and the 411/412 VWs also had oil windage trays installed. Buses never did.

Posted by: patssle Jun 3 2013, 06:03 PM

What's your engine code?

I have a '76 dual carbs bus motor with a GD engine code.