 Quickie 2.0 Rebuild |
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| McMark |
 Oct 17 2016, 05:21 PM
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#1
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914 Freak!  Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None  |
One of my winter tasks is to build a stock 2.0 with my MicroSquirt fuel injection that I can install in my car and get it dyno tuned. That's been the missing piece of my MicroSquirt setup for the last few years.
Since there isn't much demand for a stock 2.0, I just plan on doing the minimum to build a solid motor. I plan on having the valves reground, cylinder surfaces machined and reringing the pistons. Regrinding the cam and rebuilding the rods and all new bearings as well. This should give me a motor that will last through the testing, and be worth something when I'm done to pass on to a new owner at a nice price. This thread does not represent my standard procedures for rebuilding engines. This is a special case and special circumstances. For those of you on a budget, but looking to refresh their motor should appreciate this writeup. Starting off with a core engine. The previous owner mentioned this engine had a 'knock', so I'll be on the lookout for what might have caused that. This is a 'GC' code engine with air injection ports in the heads. Attached image(s)  
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| McMark |
Oct 17 2016, 05:37 PM
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#2
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914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
And finally, it appears the cam was beginning to go flat. It was a reground stock cam (as far as I can tell), but this lobe has a very rough wear pattern on the nose and the associated lifters were looking pretty rough.
Attached image(s) 
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| rgalla9146 |
Aug 23 2017, 02:07 PM
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#3
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Advanced Member Group: Members Posts: 4,554 Joined: 23-November 05 From: Paramus NJ Member No.: 5,176 Region Association: None 
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QUOTE(McMark @ Oct 17 2016, 07:37 PM)  And finally, it appears the cam was beginning to go flat. It was a reground stock cam (as far as I can tell), but this lobe has a very rough wear pattern on the nose and the associated lifters were looking pretty rough. can you believe this ?.....VERY heavy wear. Attached image(s) 
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| Dave_Darling |
Aug 23 2017, 11:01 PM
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#4
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914 Idiot Group: Members Posts: 14,986 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California
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QUOTE(rgalla9146 @ Aug 23 2017, 01:07 PM) can you believe this ?.....VERY heavy wear. That is strange; it looks like part of the typical wear? I'm more used to seeing double-arch patterns with a flat-bottomed notch in the nose of the cam. That one looks like a single-arch pattern and the notch has an angled bottom. Am I remembering wrong, or is this odd wear? --DD |
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| rgalla9146 |
Aug 24 2017, 08:16 AM
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#5
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Advanced Member Group: Members Posts: 4,554 Joined: 23-November 05 From: Paramus NJ Member No.: 5,176 Region Association: None
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QUOTE(Dave_Darling @ Aug 24 2017, 01:01 AM) QUOTE(rgalla9146 @ Aug 23 2017, 01:07 PM) can you believe this ?.....VERY heavy wear. That is strange; it looks like part of the typical wear? I'm more used to seeing double-arch patterns with a flat-bottomed notch in the nose of the cam. That one looks like a single-arch pattern and the notch has an angled bottom. Am I remembering wrong, or is this odd wear? --DD Guys I wish I could offer more info on how this got so bad. I can't Dave I can't explain the pattern either. Valves adjuster to near coil bind ? .... no oil pump drive ? The cam came to me in a box of parts along with a car... long ago. |
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| worn |
Aug 24 2017, 06:51 PM
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#6
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can't remember Group: Members Posts: 3,156 Joined: 3-June 11 From: Madison, WI Member No.: 13,152 Region Association: Upper MidWest
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QUOTE(rgalla9146 @ Aug 24 2017, 06:16 AM) QUOTE(Dave_Darling @ Aug 24 2017, 01:01 AM) QUOTE(rgalla9146 @ Aug 23 2017, 01:07 PM) can you believe this ?.....VERY heavy wear. That is strange; it looks like part of the typical wear? I'm more used to seeing double-arch patterns with a flat-bottomed notch in the nose of the cam. That one looks like a single-arch pattern and the notch has an angled bottom. Am I remembering wrong, or is this odd wear? --DD Guys I wish I could offer more info on how this got so bad. I can't Dave I can't explain the pattern either. Valves adjuster to near coil bind ? .... no oil pump drive ? The cam came to me in a box of parts along with a car... long ago. The tap pet has worn hollow so that a ball would stand in it end on. The dished tap pet is wearing evenly across its width, scooping away at the edges at the lobe. I am guessing that the tap pet was still rotating in its bore, which was probably pretty durn worn. Worn. |
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Posts in this topic
McMark Quickie 2.0 Rebuild Oct 17 2016, 05:21 PM
McMark Pulled the heads and found the first issue. I thi... Oct 17 2016, 05:28 PM Bartlett 914 :popcorn: Oct 17 2016, 05:29 PM McMark Another issue that I found was that the cam instal... Oct 17 2016, 05:33 PM McMark Still on the cam, the end plug was installed backw... Oct 17 2016, 05:35 PM
McMark And finally, it appears the cam was beginning to g... Aug 23 2017, 03:35 PM
worn Darn spell check. Not talking about pet animals. B... Aug 24 2017, 06:54 PM McMark So now that my quickie 2.0 rebuild is torn down, I... Oct 17 2016, 05:42 PM napasteve As Chance the gardener said "I like to watch... Oct 17 2016, 07:26 PM 76-914 :popcorn: I'm sure this isn't the first ti... Oct 17 2016, 08:15 PM Vacca Rabite I would not worry about the cam bolt to oil pump c... Oct 19 2016, 11:50 AM Mueller thanks for the thread Mark, always nice to learn f... Oct 19 2016, 11:54 AM ottox914 I have a set of 2.0 flat top pistons and cyls that... Oct 19 2016, 01:09 PM JOEPROPER :popcorn: This looks to be the makings of a grea... Oct 19 2016, 02:43 PM Kansas 914
:popcorn: This looks to be the makings of a gre... Oct 20 2016, 08:12 AM McMark Got a PM from a member who has stock 2.0 pistons t... Oct 20 2016, 08:55 AM Mblizzard
Got a PM from a member who has stock 2.0 pistons ... Aug 22 2017, 06:55 AM blackmoon :Qarl: I appreciated the build with the explanati... Oct 20 2016, 09:20 AM McMark FINALLY got caught up enough to jump back into thi... Aug 20 2017, 01:49 PM pichu Nice thread and idea! Not all of us are rich ... Aug 21 2017, 10:34 PM Phoenix914
[b]FINALLY got caught up enough to jump back into... Aug 23 2017, 05:10 AM moorepower
FINALLY got caught up enough to jump back into th... Aug 23 2017, 09:14 AM McMark Many people don't understand that glass beads ... Aug 23 2017, 09:53 AM cary subscribed Aug 22 2017, 06:59 AM 76-914 Tambien. Aug 22 2017, 09:23 PM Toast Mark,
I know it's not your norm but I'm v... Aug 23 2017, 07:19 AM McMark
There's no real secrets in engine building, I... Aug 23 2017, 09:56 AM Phoenix914 Thanks for taking the time to respond with such a ... Aug 23 2017, 02:00 PM 914_teener :agree:
Let's assume that when a cam looks l... Aug 24 2017, 07:22 PM McMark Working on assembling the crank finally. This isn... Oct 2 2017, 06:11 AM 76-914 Good info :beer2: Oct 2 2017, 09:22 AM 90quattrocoupe It is the little things that are important in a re... Oct 2 2017, 01:20 PM Mblizzard I have done a number of complete rebuilds in my da... Oct 2 2017, 03:09 PM DM_2000 A few things on this thread. I've repaired / ... Oct 2 2017, 05:34 PM McMark Everyone's got their ways, that's part of ... Oct 2 2017, 08:19 PM McMark Getting ready to finally finish this project. :wac... Feb 1 2018, 11:16 AM JOEPROPER Looks like you're ready to go! I'll b... Feb 1 2018, 11:48 AM gothspeed Looks good so far, can't wait until the micros... Feb 1 2018, 03:08 PM |
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