MPS rebuild, mission accomplished |
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MPS rebuild, mission accomplished |
emerygt350 |
Oct 27 2021, 12:07 PM
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#21
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Advanced Member Group: Members Posts: 2,410 Joined: 20-July 21 From: Upstate, NY Member No.: 25,740 Region Association: North East States |
I just used Chris Foley's excellent rebuild kit on my leaky MPS. After removing the spider webs and varnish it all went together nicely. Chris gave me some great tips on getting an initial set. I think it is there but I don't have any experience with how a well tuned djet 2.0 914 should run. I suspect there is probably 150k or so on this engine although it could be lower, I doubt higher unless it was cared for very very well. Impossible to know with the dead odometer. Compression is great on all cylinders with no variability.
I took a little video of a drive, start up, corners, and two pulls to 60 (of various quality). After the first 40 seconds I opened my sliding rear window so you can hear the engine sounds better. https://youtu.be/Fi4vFCWhlCw |
emerygt350 |
Dec 5 2021, 01:35 PM
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#22
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Advanced Member Group: Members Posts: 2,410 Joined: 20-July 21 From: Upstate, NY Member No.: 25,740 Region Association: North East States |
I thought I would close this thread up with my results. So after the Dyno tune (posted elsewhere) I put my own afr on it and did some further tweaking. Everything looks good at partial, WOT, and idle. Runs better now than I could have ever hoped. I took my inductance values just in case anyone might find them useful. 850 feet above sea level. 0inhg is 0.87. 4inhg is 83. And 15inhg is 0.61. these were taken with a szbj bm4070 lcr. The cheap one on Amazon. All tuning was done using the Dyno and my afr. Obviously these values look nothing like what pbanders has up.
It is running between 13 and 14 (more towards 13) at partial loads. 11 to 13 at wot (more towards 12). And 12 at idle. Idle smells fine and it is idling at 850 rpm. I still have room to lean it out on the ECU but I'm going to leave it for the time being. Engine oil is running very cool even after spirited driving. Getting a spark plug head temp sensor next week to verify temps. |
BeatNavy |
Dec 5 2021, 02:15 PM
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#23
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Certified Professional Scapegoat Group: Members Posts: 2,933 Joined: 26-February 14 From: Easton, MD Member No.: 17,042 Region Association: MidAtlantic Region |
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emerygt350 |
Dec 5 2021, 03:48 PM
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#24
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Advanced Member Group: Members Posts: 2,410 Joined: 20-July 21 From: Upstate, NY Member No.: 25,740 Region Association: North East States |
Obviously these values look nothing like what pbanders has up. Wow. You're not kidding. If you ever get your hands on a stock, unmolested MPS, take some readings to compare. I did check my original before I started working on it. Those readings were much like these (but it wouldn't hold vacuum). |
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