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1968 40+ Compression
Posted: Mon Dec 21, 2009 11:30 pm
by SeagullGuyUSA
Going to look at a 1968 40+ this week as I wasn't able to get out Sunday due to 20+ inches of snow in my location, and I am wondering what sort of compression should a good 40+ have to run well?
Re: 1968 40+ Compression
Posted: Tue Dec 22, 2009 4:04 am
by Hugz
http://www.saving-old-seagulls.co.uk/fo ... sion#p5199
Checked service sheets 1 - 30. No mention of compression what-so-ever.
Regards Hugo.
Re: 1968 40+ Compression
Posted: Tue Dec 22, 2009 2:55 pm
by SeagullGuyUSA
Thanks!
Re: 1968 40+ Compression
Posted: Wed Dec 23, 2009 3:37 am
by Hugz
Having a bit of a chuckle: Clymer Publications. British Seagull Service.Repair Manual.
page 29 "Compression may be checked at sea by pulling the starter cord and noting that an adequate resistance is felt, or by removing sparkplug, placing a finger over the plug hole, and feeling for pressure."
Re: 1968 40+ Compression
Posted: Thu Dec 24, 2009 10:46 pm
by SeagullGuyUSA
I got it today and it has 100 psi even.
Re: 1968 40+ Compression
Posted: Sat Dec 26, 2009 12:35 pm
by phil
The 40 series will run fine with 80, 100 is good+, best I've seen is 117. I'm quite happy with 90 or more. The Century series a different story, they will run well with suprisingly low compression, 50 is very normal for them, best I've seen is 70+
Re: 1968 40+ Compression
Posted: Sun Jan 24, 2010 3:08 am
by rosbullterier