- 1. Heads off, what next (score: 1)
- Author: "William M. Gilroy" <wmgilroy@lucent.com>
- Date: Thu, 26 Nov 1998 10:28:26 -0500
- Now that I got the head off my 77 Midget (1500cc) I have more than a few questions about what I am seeing. Just a recap, I took the head off because I had very low compress cylinders 2 & 3 (something
- /html/mgs/1998-11/msg01467.html (9,898 bytes)
- 2. Heads off, what next (score: 1)
- Author: "William M. Gilroy" <wmgilroy@lucent.com>
- Date: Thu, 26 Nov 1998 10:30:34 -0500
- Now that I got the head off my 77 Midget (1500cc) I have more than a few questions about what I am seeing. Just a recap, I took the head off because I had very low compress cylinders 2 & 3 (something
- /html/mgs/1998-11/msg01468.html (10,082 bytes)
- 3. Re: Heads off, what next (score: 1)
- Author: Trevor Boicey <tboicey@brit.ca>
- Date: Thu, 26 Nov 1998 14:58:45 -0500
- You can probably pin the problem down with some simple DIY tests. Take a small gas can to the corner station and buy a few liters of diesel fuel. Spin the engine until all the pistons are about the s
- /html/mgs/1998-11/msg01473.html (8,683 bytes)
- 4. Re: Heads off, what next (score: 1)
- Author: REwald9535@aol.com
- Date: Thu, 26 Nov 1998 15:03:39 EST
- few questions about what I am seeing. Just a recap, I took the head off because I had very low compress cylinders 2 & 3 (something like 40 & 60 psi dry) and about 120 psi dry in 1 & 4. I also had hig
- /html/mgs/1998-11/msg01475.html (13,247 bytes)
- 5. Re: Heads off, what next (score: 1)
- Author: H4aardvrk@aol.com
- Date: Thu, 26 Nov 1998 15:45:10 EST
- << What can I do myself, what should I check and re-check? Bill, It is quite obivious from your observations of the head and cylinder of your engine that a Complete tear down,inspection,and rebuild a
- /html/mgs/1998-11/msg01476.html (9,934 bytes)
- 6. Re: Heads off, what next (score: 1)
- Author: EricSsmc@aol.com
- Date: Thu, 26 Nov 1998 16:59:37 EST
- Sounds to me like a classic case of broken and/or stuck rings. The head seal is good but the compression just blows by the pistons due to lack of seal between the rings and cylinder wall. This create
- /html/mgs/1998-11/msg01477.html (7,936 bytes)
- 7. Re: Heads off, what next (score: 1)
- Author: "William M. Gilroy" <wmgilroy@lucent.com>
- Date: Fri, 27 Nov 1998 21:07:04 -0500
- I took Tevor's advice and gave it a try with the diesel fuel. I positioned the pistons 1/2 way up the bore and filled the rest with diesel fuel. The second cylinder drained in about 1.5 hours, follow
- /html/mgs/1998-11/msg01526.html (9,837 bytes)
- 8. Re: Heads off, what next (score: 1)
- Author: Trevor Boicey <tboicey@brit.ca>
- Date: Fri, 27 Nov 1998 23:32:59 -0500
- That certainly gives a valid comparison between cylinders, and might explain a bit if the drainage speeds match up to the cylinders with bad compression. However, I've used the diesel fuel test quite
- /html/mgs/1998-11/msg01527.html (11,410 bytes)
- 9. Re: Heads off, what next (score: 1)
- Author: H4aardvrk@aol.com
- Date: Fri, 27 Nov 1998 23:46:02 EST
- << Looks like I will be pulling the engine over the next couple of gentlemen, we are really out of control here...diesel fuel??gasoline in the cylinders???GET A GRIP HERE! One pulls the engine, repai
- /html/mgs/1998-11/msg01528.html (8,132 bytes)
- 10. Re: Heads off, what next (score: 1)
- Author: Trevor Boicey <tboicey@brit.ca>
- Date: Sat, 28 Nov 1998 00:01:26 -0500
- I think this is another example of the "rebuild the engine" crowd. I don't think we are, as a rule, made of money in this group. Spending $2000 rebuilding an engine every time it hiccups is a quick w
- /html/mgs/1998-11/msg01529.html (8,257 bytes)
- 11. Re: Heads off, what next (score: 1)
- Author: H4aardvrk@aol.com
- Date: Sat, 28 Nov 1998 00:30:46 EST
- << I don't think we are, as a rule, made of money in this group. Spending $2000 rebuilding an engine every time it hiccups is a quick way to scare people out of the MG hobby. >> Hickups?, a cylinder
- /html/mgs/1998-11/msg01530.html (8,172 bytes)
- 12. Re: Heads off, what next (score: 1)
- Author: Trevor Boicey <tboicey@brit.ca>
- Date: Sat, 28 Nov 1998 00:46:57 -0500
- Well, the ACTUAL reason the engine was inspected was because of oil coming from the dipstick, wasn't it? From what I can tell from here, I don't see overwhelming evidence that the bores are destroyed
- /html/mgs/1998-11/msg01531.html (10,097 bytes)
- 13. Re: Heads off, what next (score: 1)
- Author: "William M. Gilroy" <wmgilroy@lucent.com>
- Date: Sat, 28 Nov 1998 09:34:57 -0500
- I have taken a look at my shop manuals and Tyler's book. While they supply the correct tolerances, I lack the measuring equipment and experience in using it. I would questions my abilities to decide
- /html/mgs/1998-11/msg01544.html (10,721 bytes)
- 14. Re: Heads off, what next (score: 1)
- Author: "William M. Gilroy" <wmgilroy@lucent.com>
- Date: Sat, 28 Nov 1998 09:41:29 -0500
- Howard, All this cost me was a buck in diesel, and some of my time. Not having much experience in this area I would like to understand the problem and the cause before I fix it. The investment was sm
- /html/mgs/1998-11/msg01545.html (8,920 bytes)
- 15. Re: Heads off, what next (score: 1)
- Author: "William M. Gilroy" <wmgilroy@lucent.com>
- Date: Sat, 28 Nov 1998 09:57:36 -0500
- None were that bad. The rate they drained did corresponding with their compression level. While the rate may not be bad, the difference in the rate cannot be good. I would like them all be like numbe
- /html/mgs/1998-11/msg01546.html (11,734 bytes)
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