 Engine GA000099, An early GA engine rebuild thread |
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| Superhawk996 |
 Jun 4 2019, 06:08 PM
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#1
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914 Guru  Group: Members Posts: 7,050 Joined: 25-August 18 From: Woods of N. Idaho Member No.: 22,428 Region Association: Galt's Gulch 
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Last week I bought engine GA000099 from Freezing914 in the hopes of picking up some spare parts to support rebuild of the engine that came with my vehicle.
During the teardown of my vehicles engine, it is quickly becoming clear that the engine was abused by some DAPO. Cooling flaps and thermostat had been removed. Rust in the sump. The crank was scored and already 0.010" undersized. The oil pump was torn up. This is just the tip of the iceberg on the engine that came with my vehicle. (IMG:style_emoticons/default/chair.gif) 14 hours of driving seems to have netted me an engine that might be worthy of a rebuild. (IMG:style_emoticons/default/piratenanner.gif) This engine appears to be bone stock. D-jet mostly complete. As an added bonus I discovered upon teardown that none of the cooling tin fasteners have ever been disturbed. No screwdriver marks! But . . . like any engine of this age and unknown origin, it absolutely needs to be gone though. |
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| Superhawk996 |
Aug 8 2019, 07:08 PM
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#2
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914 Guru Group: Members Posts: 7,050 Joined: 25-August 18 From: Woods of N. Idaho Member No.: 22,428 Region Association: Galt's Gulch
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Continuation of piston and cylinder measurement.
I've been measuring pistons and cylinders and not quite believing the results. A few days ago I was measuring cylinders and comparing between the new set of KolbenSchmidt Pistons and Cylinders (P&C's) and those from GA000099. I measured 1st with a Mitutoyo snap gauge and my Chinese micrometer. Coming up right on the money for the cylinder. Right around 94mm with no real taper.  So then I did a quick check of the snap gauge with a set of Mitutoyo calipers. Same result about 94.02mm. 0.02mm = .0008" so about 0.001" over size. New cylinder size is 94mm with tolerance of 0.02mm - 0.05mm for new parts per factory manual with a upper wear limit at 0.2mm which is about .008". Not quite believing this, I took the time to set up a bore gauge at 94mm. Sure enough, still coming in about 0.001" oversize to the 94mm gauge (sorry for swapping units back and forth).  This does align pretty well to the fact that the cylinders visually look good and I can still see some of the original hone / hatch marks. Pretty amazing that these are still in great shape and can probably be cleaned up with just a light re-hone. Here's a quick video https://www.youtube.com/watch?v=-ObzdlUJhhc |
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Posts in this topic
Superhawk996 Engine GA000099 Jun 4 2019, 06:08 PM
Superhawk996 One of the nice things about this engine is that t... Jun 4 2019, 06:20 PM
bbrock
After finally getting down to the bare tin, I was... Jun 4 2019, 06:47 PM barefoot
After finally getting down to the bare tin, I wa... Jun 5 2019, 06:15 AM Superhawk996 We'll have to see how this engine progresses a... Jun 4 2019, 06:27 PM Superhawk996 @bbrock
Now that I obtained this engine I will ... Jun 4 2019, 06:59 PM bbrock
I also think that the type of bracket is part of ... Jun 4 2019, 08:52 PM Superhawk996 Here is one more picture of why we teardown unknow... Jun 4 2019, 07:03 PM Superhawk996 Last night I began pulling pistons and cylinders. ... Jun 9 2019, 11:36 AM Tdskip Thank you for documenting this.
How did you clea... Jun 9 2019, 08:09 PM Superhawk996 Oil cooler not cleaned yet.
The problem with oi... Jun 9 2019, 08:32 PM bbrock It's been 30+ years but when I tore down my en... Jun 9 2019, 10:05 PM Superhawk996 It has been forever since I've worked on the 9... Jul 13 2019, 06:04 PM bbrock
It has been forever since I've worked on the ... Jul 13 2019, 07:29 PM Tdskip “This is a toaster from the era before the Lawye... Jul 13 2019, 06:06 PM Superhawk996 Oh, and I did at least get the engine case for goo... Jul 13 2019, 06:14 PM Superhawk996 As an added bonus, this engine came complete with ... Jul 13 2019, 06:31 PM Superhawk996 And the final good news for the day is that the cr... Jul 13 2019, 06:41 PM porschetub Will be following this build :popcorn: as I'a... Jul 14 2019, 02:37 PM Superhawk996 Not a very productive 914 weekend. In addition to... Jul 15 2019, 07:33 PM Superhawk996 I did notice some differences in this early 099 ca... Jul 15 2019, 08:03 PM Superhawk996
There also appears to be an error in machining t... Oct 20 2019, 04:32 PM Jake Raby Early GA cases have given me lots of issues. The c... Jul 18 2019, 10:43 PM Superhawk996
Early GA cases have given me lots of issues. The ... Jul 27 2019, 03:35 AM Superhawk996 Time has come to tear down the heads to see if the... Jul 27 2019, 03:49 AM 76-914 I like clean. I've always said that your going... Jul 27 2019, 09:02 AM Superhawk996
What's your timetable for this project?
... Jul 27 2019, 09:15 AM Superhawk996 Restoration work is like a roller coaster ride.
... Jul 27 2019, 11:10 AM Superhawk996 I also have a tip for those of you with sand blast... Jul 27 2019, 11:19 AM bbrock
I also have a tip for those of you with sand blas... Jul 27 2019, 12:57 PM Tdskip You nailed it when you said all of this is a rolle... Jul 27 2019, 11:31 AM Superhawk996 Sure . . . rub it in. :DRUNK:
Someday I'll r... Jul 27 2019, 05:00 PM Superhawk996 OK -- so I got the head set up in the mill and was... Jul 27 2019, 05:05 PM bbrock
OK -- so I got the head set up in the mill and wa... Jul 27 2019, 05:09 PM Superhawk996 Now onto the last PITA on the other head. The stu... Jul 27 2019, 05:18 PM nathanxnathan
Now onto the last PITA on the other head. The st... Jul 29 2019, 04:16 PM 76-914
Now onto the last PITA on the other head. The s... Jul 29 2019, 05:03 PM Superhawk996
BTW, you couldn't have the mill delivered fo... Jul 29 2019, 06:38 PM Tdskip Thanks for the update Jul 29 2019, 06:35 AM jd74914 Gotta ask...what kind of knee mill is that? Jul 29 2019, 06:54 AM Superhawk996
Gotta ask...what kind of knee mill is that?
@j... Jul 29 2019, 10:15 AM jd74914 Very cool! Strange taper for a little mill but... Jul 29 2019, 01:41 PM Superhawk996 :blink:
Doh! :headbang:
It's definat... Jul 29 2019, 06:28 PM Superhawk996 I started cleaning up the stock pistons from this ... Jul 29 2019, 06:58 PM Superhawk996 Still working on GA000099 slowly but surely.
I... Aug 4 2019, 11:15 AM 914_7T3 Phil, Keep posting on your progress. Of course it... Aug 4 2019, 10:40 PM Superhawk996 Received a new pair of HAM prepared AA Performance... Aug 17 2019, 12:56 PM barefoot
Received a new pair of HAM prepared AA Performanc... Oct 9 2019, 06:11 PM Superhawk996 Other than the exciting arrival of heads, my 914 w... Aug 17 2019, 01:02 PM Superhawk996 The stork dropped off some more parts for GA000099... Aug 21 2019, 06:09 PM bbrock
Can't wait to get to the 2nd surgery on 9/17 ... Aug 21 2019, 07:23 PM Superhawk996 It's been a while since I've updated this ... Oct 9 2019, 05:30 PM Superhawk996 Have you ever noticed how one project leads to ano... Oct 9 2019, 06:27 PM 76-914 A few years back I bought the KS main bearings fro... Oct 11 2019, 06:56 PM Superhawk996 GA000099 galley Plugs pulled.
For those not c... Oct 27 2019, 10:54 AM Superhawk996 Check of cylinder deck shows that we have some fla... Oct 27 2019, 11:05 AM 914werke Nice! following..
not to :hijacked: but thoug... Oct 27 2019, 12:06 PM Superhawk996 :headbanger: Right on.
Earlier in the year I ha... Oct 27 2019, 01:16 PM Superhawk996
Earlier in the year I had someone PM me about an... Nov 4 2019, 07:03 PM Superhawk996 So I spent some time to make sure my mill was set ... Oct 27 2019, 07:12 PM cassmcentee Thank you for this thread!
I'm breaking do... Oct 28 2019, 08:54 AM Superhawk996 Burning the late night oil.
So many other oblig... Nov 2 2019, 10:30 PM wndsrfr When you get the cylinder base shims, order in tw... Nov 5 2019, 07:33 AM Superhawk996
When you get the cylinder base shims, order in t... Nov 5 2019, 06:46 PM Superhawk996 Here's a continuation of the case machine work... Nov 16 2019, 11:48 PM Superhawk996 Work on the galley plugs continues . . . .
Sim... Nov 18 2019, 07:52 PM Superhawk996 Started stacking up some parts in anticipation of ... Nov 18 2019, 08:01 PM Superhawk996 And what looks to be the best surprise I found on ... Nov 18 2019, 08:11 PM Superhawk996 While I'm waiting on my garage to heat up this... Nov 24 2019, 09:18 AM Superhawk996 Hasn't been a lot of action on the engine fron... Jan 14 2020, 07:21 PM |
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