I am making reproduction Porsche engine cases!
08-11-2017, 08:40 PM
#50
Addict
I believe a substantially improved 944 engine is already in production...
Later on the 57 there is construction and back up. Rolling in second as the construction lets up and traffic starts to flow I punch it. As the back of the car yaws to the right and a blood curdling screech echoes off the K-rail the Vette next to me vanishes in my mirrors. WTF just happened? This thing is so much more a monster than it was last year it's insane. My brother was behind me and said it fishtailed all over while it was laying down rubber.....I just figured it was tramlining....
08-11-2017, 08:57 PM
#51
Banned
Thread Starter
Nope, owned 2 944s and 1 951, my days of working in that horrible engine bay are over, LOL. There are way smarter 944 folks than I; Dave Lindsey comes to mind.
08-11-2017, 10:20 PM
#52
Banned
Thread Starter
While I wait for the machinist to finish constructing the fixtures that will hold the case in place for machining, I am putting my 3.2 short stroke motor back together. It started life as a 3.0 in my 1983 SC, and was just tired all the way around.
Although I had the case halves soda blasted and hot tanked, it is still very hard to clean out the oil galleries. It is clear to me that Porsche never paid any thought to rebuilding these. Here is what you will NOT be doing on my cases:
1. Taking JB weld and coating the outsides of all the aluminum plugs so they don't leak. Not only is this a totally hack solution to an easily solvable problem, it looks like crap. My case has hex head plugs that can be removed and replaced. A little loctite will keep them in place and leak free.
2. Want to clean out your piston squirters, or verify they work? You need a tool like the (excellent) one from Stomski racing that fits in the case through bolt hole and shoots a jet of air up into the squirter. Alternately, you can rig something up, but it is still a hassle. How about just using removable squirters that unscrew???? Yeah, that's what I said too.
3. Regardless of what the case looks like from the outside, there is no good way of ensuring the oil galleries are clean and clear without removing the plugs, which is a hassle. Usually you wind up spraying a gallon of carb cleaner through every hole you can see, then say a little prayer, and hope for the best. See point #1.
Also working on a new feature that will make it easy to separate the case halves without hammering or prying. My case should last forever, but if you need to open the motor because you a) dropped something in there b) forgot an oil pump seal, c) forgot to put the chains on the lay shaft and don't want to use a master link, you'll be able to split the case easily.
Most of the ideas I came up with were directly borne from building a ton of these engines myself. I hope that shows through.
Although I had the case halves soda blasted and hot tanked, it is still very hard to clean out the oil galleries. It is clear to me that Porsche never paid any thought to rebuilding these. Here is what you will NOT be doing on my cases:
1. Taking JB weld and coating the outsides of all the aluminum plugs so they don't leak. Not only is this a totally hack solution to an easily solvable problem, it looks like crap. My case has hex head plugs that can be removed and replaced. A little loctite will keep them in place and leak free.
2. Want to clean out your piston squirters, or verify they work? You need a tool like the (excellent) one from Stomski racing that fits in the case through bolt hole and shoots a jet of air up into the squirter. Alternately, you can rig something up, but it is still a hassle. How about just using removable squirters that unscrew???? Yeah, that's what I said too.
3. Regardless of what the case looks like from the outside, there is no good way of ensuring the oil galleries are clean and clear without removing the plugs, which is a hassle. Usually you wind up spraying a gallon of carb cleaner through every hole you can see, then say a little prayer, and hope for the best. See point #1.
Also working on a new feature that will make it easy to separate the case halves without hammering or prying. My case should last forever, but if you need to open the motor because you a) dropped something in there b) forgot an oil pump seal, c) forgot to put the chains on the lay shaft and don't want to use a master link, you'll be able to split the case easily.
Most of the ideas I came up with were directly borne from building a ton of these engines myself. I hope that shows through.
08-11-2017, 11:35 PM
#53
Initially the Toyota Cart engines experienced oil gallery contamination from the Zues production methods and eliminated it after much consternation by the Extrude Honing processes.
regards
regards
08-12-2017, 12:17 AM
#54
Banned
Thread Starter
I'm talking more about oil gallery contamination over time, from simply running the motor; the sludge and crap that accumulates inside there. Of course then there is a catastrophic failure situation where you have metal in the engine and need to clean it out (aka the track rat's biennial problem).
08-13-2017, 05:56 PM
#55
Addict
Rennlist Member
Rennlist Member
A solid 2.7 case would be amazing! Not that this is not.
I was going to be looking for a 3.0 for my 914 next year, but if you are on to 2.7s after this I will wait.
While I like the 3.6 in my 993, nothing sounds as good as a 2.7.
I was going to be looking for a 3.0 for my 914 next year, but if you are on to 2.7s after this I will wait.
While I like the 3.6 in my 993, nothing sounds as good as a 2.7.
08-13-2017, 09:00 PM
#56
Banned
Thread Starter
2,7 with webers is the perfect motor for a 914. It is what I have in my 914, and the sound is literally the best out of all the cars I have. I don't know what it is about the harmonics of the 2.7 but its amazing.
08-14-2017, 07:00 AM
#57
Racer
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So impressed by the work done so far. Well done for taking the technology available today and making these cases available again. I had a 2.3 liter four cylinder built for my own 914 simply because there arent any 6's left at prices that I could see myself paying.
It may not have the pedigree of a -6 but it doesnt sound too bad...
It may not have the pedigree of a -6 but it doesnt sound too bad...
