Compression numbers????

  • NovaNewfie
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Compression numbers????

09 Apr 2013 18:59 - 09 Apr 2013 19:53
#581447
Hello again,

I'm still bored as my parts haven't come in yet.

I did a compression test on my '79 KZ1000E-1 ST 34'000kms or 20'000miles. Keep in mind this engine was started once the other day since it sat since 2002, then I took my carbs off and have been waiting impatiently for my parts. I took them first dry then after adding a teaspoon of engine oil in each cylinder.

#1-128lbs dry 150 after adding oil
#2-115lbs 130
#3-118lbs 130
#4-130lbs 165

I'm waiting for my manual as well.
Are these numbers acceptable considering the long time setting? Will it run decent with these numbers?
I know I'm going to have to redo at least the top end in the future.
Thanks

Additional note. Numbers were taken with carbs off bike. All spark plugs removed and engine cold around 34 degrees F.
1979 KZ1000E-1 ST
Last edit: 09 Apr 2013 19:53 by NovaNewfie. Reason: Additional note

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  • baldy110
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Re: Compression numbers????

09 Apr 2013 19:50
#581455
Yes it should start and run ok with those numbers. After it gets run for a bit you should see an increase and some of those numbers may stabilize and be consistent with each other.
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  • gdprather
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Re: Compression numbers????

10 Apr 2013 12:50
#581614
my 1983 1100 spectre has 180 to 195 so you are not far off really. should run fair.
1985 Kawasaki Vucan vn700A1
1983 Kawasaki KZ1100D2 Spectre

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  • steell
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Re: Compression numbers????

10 Apr 2013 13:35
#581624
Have you adjusted the valves yet? If not then you'll probably get a big boost in compression after doing so.
KD9JUR
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  • NovaNewfie
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Re: Compression numbers????

11 Apr 2013 00:51
#581753
No I haven't taken the cover off to look at the valve clearance yet. I'm trying to decide if I should order a gasket and end caps before or after. If I wait till after I could order the shims I need. I really hate waiting for parts. I ordered parts from 4 different stores on e-bay on the 22nd of march and have so far only gotten one item.
1979 KZ1000E-1 ST

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  • badrhino
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Re: Compression numbers????

11 Apr 2013 01:04
#581755
Check with Z1Enterprises they usually have everything you will need.
1980 KZ1000 with a 1982 KZ1000J motor with 1100 pistons and heads, Vance & Hines, 29MM Smooth Bores, Work in Progress
Franken Z!

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