 Advice needed: Dropped the engine...and found... |
|
|
|
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. |
|
|
| PBC914 |
 May 28 2011, 03:16 PM
Post
#1
|
|
Member  Group: Members Posts: 192 Joined: 30-December 10 From: Minneapolis Member No.: 12,545 Region Association: Upper MidWest  |
...a broken upper case! This is the first time I've had time to drop the engine and do some major work on the engine itself. I bought it this winter and was not able to view the engine closely because of all of the debris on it. It was not running at the time. It looks like the cylinder broke on top, and broker the case on the passenger side on top. I found a rusty connecting rod piece. Major bummer.
Question-is the case repairable? I want to keep the car original with the original engine. Any suggestions are greatly appreciated. |
   |
 
|
  |
Replies
| 70_914 |
May 28 2011, 04:38 PM
Post
#2
|
|
Member Group: Members Posts: 395 Joined: 4-December 09 From: Roy, WA Member No.: 11,096 Region Association: Pacific Northwest |
Take it to an aluminum welder and ask, don't take the opinions of people online who can't even see the engine...
|
|
|
|
| stewteral |
May 28 2011, 06:44 PM
Post
#3
|
|
Old Member Group: Members Posts: 384 Joined: 4-December 07 From: Camarillo, CA Member No.: 8,424 Region Association: Southern California |
QUOTE(70_914 @ May 28 2011, 03:38 PM)  Take it to an aluminum welder and ask, don't take the opinions of people online who can't even see the engine... Another Opinion: The "weldability" of the cases is dependent on the Aluminum alloy and the Germans do LOVE mixing Magnesium into their aluminum. I do NOT know what the alloy is, but know it could very problomatic welding. The best thing is to call a weld shop and ask them about their experience trying to save cases. The point that no one has mentioned: IF a case CAN be welded, there is NO doubt that any matting surfaces will have to be re-machined. It the break is around the bores, it may work OK. However, if the break involves the case mating surface to the other case half, the surface must be milled and THEN the cases, bolted together, will HAVE to be line-bored for bearing fit. The last question: What forces created the break in the case? Will you feel SURE that a weld repair will recreate the strength of the original casting? Lots of unknowns here! If it were MY engine, I'd find another engine and rebuild it...or....At the very least a replacement case and extensive rebuild ot the internals. A last (and probably distasteful choice to most 914ers) would be to go Straight VW, dump the EXPENSIVE Type IV engine and enjoy the volume pricing of building a 2200 cc Type II or type I engine. The parts are EVERYWHERE and they are cheap relative to 411!. I'm currently doing a complete bare-chassis restoration of a '73 and ended up putting $1000 in the engine rebuild. I must admit that the cost included being raped by AutoAtlanta on main bearing: $200, a Weber carb setup for $250 (used) and extra cost for BIG Bores (1.7l goes to 1.9l). BTW: I've been rebuilding street and race engines for 49 years) Hope this helps, but the decision is YOURS, Terry |
|
|
|
Posts in this topic
PBC914 Advice needed: Dropped the engine...and found... May 28 2011, 03:16 PM
john rogers Cases are generally not repairable and if the rod ... May 28 2011, 03:59 PM
Elliot Cannon
Take it to an aluminum welder and ask, don't ... May 28 2011, 04:44 PM vsg914 Damn.thats kinda harsh Kevin. most of the threads ... May 28 2011, 05:35 PM Richard Casto One of my previous 914s had a case that had been r... May 28 2011, 06:52 PM Jacob I am not an expert in these matters myself, but in... May 28 2011, 07:03 PM kg6dxn The problem is getting the case clean enough to we... May 28 2011, 07:05 PM
Derek Seymour Buy another engine, drop it in, enjoy your 914. Ke... May 28 2011, 07:17 PM stugray I was a welder for 13 years.
I DO NOT recommend tr... May 28 2011, 07:08 PM PBC914 Thanks everyone-I'll give the weld a try first... May 28 2011, 09:09 PM speed metal army Hey,any welder experienced in alloys will have no ... May 28 2011, 09:23 PM McMark The only question worth considering is how much mo... May 29 2011, 12:46 AM stugray For the cost of welding, machining the mating halv... May 29 2011, 02:40 PM speed metal army
For the cost of welding, machining the mating hal... May 29 2011, 04:48 PM Cap'n Krusty
For the cost of welding, machining the mating hal... May 31 2011, 07:11 AM DBCooper
For the cost of welding, machining the mating ha... May 31 2011, 07:24 AM r_towle It can be welded....its been done for years when t... May 29 2011, 08:29 PM 70_914
Take it to a pro and listen to the advice of a go... May 30 2011, 09:18 PM r_towle
Take it to a pro and listen to the advice of a g... May 31 2011, 06:54 AM Bleyseng it can be welded but you won't be saving time ... May 30 2011, 09:30 AM 9146986 New cases are fairly cheap compared to what you co... May 30 2011, 12:37 PM DBCooper "We need pictures" is right. A lot of s... May 31 2011, 04:41 AM 914 shifter post WTB engine in the classifieds section :blink... May 31 2011, 06:07 AM rick 918-S The piece of the block didn't just pop out on ... May 31 2011, 07:38 AM |
2 User(s) are reading this topic (2 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 8th June 2024 - 09:48 PM |
Invision Power Board
v9.1.4 © 2024 IPS, Inc.