littlebill31
Smells of Raw Fuel
Compression rates.
under- 100 psi poor
100/125 psi good
125/150 psi excellent
under- 100 psi poor
100/125 psi good
125/150 psi excellent
-
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'81 motor wont fire but turns over - any help in Eastern NC?
smokenjoep01
Motorcycle Freak
I just seen this thread. I live over in Wilmington if I can be of help. I can get ya hardtailed as well!
I'm not sure which manual you have. Most have a list of bike specs, these list include engine specs, such as compression.
In my Clymers book starting on page 153 it lists most of the bikes specs and it says 145 psi. Thats a minimum for a new engine, most report 150+ on a fresh rebuild. My 750 kit has about 195 psi.
If your bike hasn't run in a few years even if your compression reads lower, it may be ok. As long as it reads above about 100 psi and within 10% between sides. You should be able to get it to run.
There are reports of lower psi readings improving after the bike runs awhile. Many come up to the 150 psi range after a few hundred miles of running.
Leo
In my Clymers book starting on page 153 it lists most of the bikes specs and it says 145 psi. Thats a minimum for a new engine, most report 150+ on a fresh rebuild. My 750 kit has about 195 psi.
If your bike hasn't run in a few years even if your compression reads lower, it may be ok. As long as it reads above about 100 psi and within 10% between sides. You should be able to get it to run.
There are reports of lower psi readings improving after the bike runs awhile. Many come up to the 150 psi range after a few hundred miles of running.
Leo
wildbill
XS650 Enthusiast
Things have been slow ... but progress update: exhaust from Scott (GordonScott Engineering) came and it looks awesome - he's a great guy to work with!
Q Tip
mad bomber
Just have seen this thread. I live in NE Wilson Co. I did the wiring on my bike with a lot of help from this site. I am in Greenville every day going to and from work.
wildbill
XS650 Enthusiast
I have the Haynes manual - is it worth getting the Clymer?
wildbill
XS650 Enthusiast
I just answered my own question by going out on eBay and picking up a Clymer Repair manual...