 914-4 compared to a VW motor of the same year |
|
|
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
|
  |
| CTDan914 |
 May 27 2013, 04:26 AM
Post
#1
|
|
Newbie  Group: Members Posts: 46 Joined: 23-April 12 Member No.: 14,415 Region Association: North East States  |
How does a 75 914 4 cylinder motor compare to a 75 VW motor? How do they differ if at all?
Dan |
   |
 
|
| smveril |
May 27 2013, 06:43 AM
Post
#2
|
|
Mikey Group: Members Posts: 50 Joined: 6-December 04 From: Cincinnati, OH Member No.: 3,232 Region Association: Upper MidWest |
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.
|
|
|
|
| morph |
May 27 2013, 07:38 AM
Post
#3
|
|
quality parts builder Group: Members Posts: 1,828 Joined: 25-November 03 From: oregon coast Member No.: 1,389 Region Association: Pacific Northwest |
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. |
|
|
|
| CTDan914 |
May 28 2013, 06:13 PM
Post
#4
|
|
Newbie Group: Members Posts: 46 Joined: 23-April 12 Member No.: 14,415 Region Association: North East States |
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 |
|
|
|
| Dave_Darling |
May 28 2013, 07:03 PM
Post
#5
|
|
914 Idiot Group: Members Posts: 14,986 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California 
|
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 |
|
|
|
| CTDan914 |
May 29 2013, 06:46 AM
Post
#6
|
|
Newbie Group: Members Posts: 46 Joined: 23-April 12 Member No.: 14,415 Region Association: North East States |
QUOTE(Dave_Darling @ May 28 2013, 09:03 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 Thanks DD. I very new to the 914 world and have a lot to learn about them. |
|
|
|
| Bleyseng |
Jun 3 2013, 09:28 AM
Post
#7
|
|
Aircooled Baby! Group: Members Posts: 13,034 Joined: 27-December 02 From: Seattle, Washington (for now) Member No.: 24 Region Association: Pacific Northwest |
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. |
|
|
|
| nathansnathan |
Jun 3 2013, 12:00 PM
Post
#8
|
|
Senior Member Group: Members Posts: 1,052 Joined: 31-May 10 From: Laguna Beach, CA Member No.: 11,782 Region Association: None |
QUOTE(Bleyseng @ Jun 3 2013, 08:28 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. 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. |
|
|
|
| aircooledtechguy |
Jun 3 2013, 04:05 PM
Post
#9
|
|
The Aircooledtech Guy Group: Members Posts: 1,966 Joined: 8-November 08 From: Anacortes, WA Member No.: 9,730 Region Association: Pacific Northwest |
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. |
|
|
|
| patssle |
Jun 3 2013, 06:03 PM
Post
#10
|
|
Senior Member Group: Members Posts: 981 Joined: 28-August 09 From: Houston, TX Member No.: 10,741 Region Association: None |
QUOTE(smveril @ May 27 2013, 04:43 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. What's your engine code? I have a '76 dual carbs bus motor with a GD engine code. |
|
|
|
|
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 16th May 2024 - 07:28 PM |
Invision Power Board
v9.1.4 © 2024 IPS, Inc.