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Post by captaincodfish on Apr 22, 2017 14:05:24 GMT -5
Interesting input pistonguy , thanks for the wisdom. I actually just tried the compression test with a tester from AutoZone and it reads about 150 psi. So Harbor Freight makes a TERRIBLE (no surprise there) compression tester. I just left my spark plug adapter at my apartment in Long Beach and Harbor has a great return policy and sells a compression tester set that comes with the proper adapter. So there you have it, I found the missing 100+ psi (though it still isn't *perfect). Now we are going to play around with the carb to see if we can enhance performance. |
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Post by captaincodfish on Apr 22, 2017 3:34:06 GMT -5
Why would it matter new valves old seats? I can't replace the whole cylinder head. The grinding compound made the valves sit real nice and I followed directions from several sources. I don't know how else you would expect to seat them if you didn't use compound. The cylinder wasn't bored out, we did a measurement to check and the new rings fit. Also put some oil in the chamber when doing a compression test and it only increased the pressure by 5psi. The only thing I didn't do was get new gaskets so that is the next step. Stupid of me to forget to order them. Also I am using a crap compression reader from Harbor Freight so I am going to rent one from AutoZone tomorrow. Thanks for the input. I'll get some pictures.
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Post by captaincodfish on Apr 19, 2017 18:50:45 GMT -5
Hey everybody. I bought the 91 Honda Elite 80 for $200 from a dude and man has it had problems.
Currently, I am working on my power/compression. Manual says it should be around 199psi, my gauge is reading about 45psi. It will reach 45mph, but it really seems like it should have a little more kick to it. Kinda slow with two people.
I replaced both valves a month ago and grinded them with compound to (hopefully) seat well. I just replaced the piston rings with a new set. I have moved the timing chain over one tooth and it didn't make a difference. My gaskets are old but seem to not have any cracks or problems. It is also an old spark plug but it still works. Tomorrow I am planning on taking the cylinder apart again to see what I can find but I don't really know where all that pressure is going.
Any ideas?
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Honda Aero 50