84 Interstate

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GL1-242
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Re: 84 Interstate

#16

Post by GL1-242 »

I did a compression test on engine.
1= 150
2= 185
3= 42
4= 68
not much suction on finger when checking for TDC. My neighbor who is a true gearhead says if the valves where closing you would feel suction on finger.
Time to break into the heads and check the valves.

Paul
84 GL1200 STD
75 GL1000 #202
75 GL1000 (AKA, GL1-242)(AKA, Flipper)
76 LTD
76/77 CB750F
Bultaco's = 121, 152, 167, 188
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robin1731
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Re: 84 Interstate

#17

Post by robin1731 »

Actually it's time to do a leakdown test. You aren't done diagnosing yet.
1975 GL1000 parts bike (parts for sale)
1976 Goldwing Super Sport
1985 Honda Elite
1976 KZ900 Dragbike
1992 ZX7 Dragbike (KZ900 style motor w/NOS)
and a rotation of various purchases
Randakk approved Carb Rebuilder
DUGG
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Re: 84 Interstate

#18

Post by DUGG »

robin1731 wrote: Wed Sep 08, 2021 2:21 pm Actually it's time to do a leakdown test. You aren't done diagnosing yet.
What he said, or do a wet compression test
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NotSoLilCrippseys
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Re: 84 Interstate

#19

Post by NotSoLilCrippseys »

Rat wrote: Mon Aug 30, 2021 11:22 am You can save few bucks by taking the old cover off yourself and shaping the foam the way you want it.
Keep the cover though as they may want to measure it.

Gord
I agree with Gord. We took just this approach on an '83 build, and it came out pretty nice for the cost of some staples and some marine vinyl - and labor in the shop and at the dining room table. Given the shape we wanted, we didn't have to make a pattern, sew, or anything. 5000 miles in the saddle and it still looks like the day I put in the final staple.
Avatar is a summer '21 photo of the Blue Phoenix, our Winter '21 GL1100I gone naked.
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GL1-242
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Re: 84 Interstate

#20

Post by GL1-242 »

guy behind me has a leak down tester but not a 12mm adaptor. I'm pulling the heads and going to clean up the valves and cylinder walls.

Paul
84 GL1200 STD
75 GL1000 #202
75 GL1000 (AKA, GL1-242)(AKA, Flipper)
76 LTD
76/77 CB750F
Bultaco's = 121, 152, 167, 188
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gltriker
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Re: 84 Interstate

#21

Post by gltriker »

GL1-242 wrote: Mon Sep 13, 2021 8:54 pm guy behind me has a leak down tester but not a 12mm adaptor. I'm pulling the heads and going to clean up the valves and cylinder walls.

Paul

Motion Pro - 4-stroke Leak Down Tester Replacement 12mm Hose - 08-126Y

Paul,

I bought this Motion Pro 12mm adapter hose assy. on Amazon a couple of years ago. A real bargain at the time. $14 with Prime shipping. You really NEED one for diagnostic testing before disassembling an engine! tumb2
Can't locate just this single 12mm hose assembly in the Amazon listings now though.
It has Schrader type valve stem core threads already machined into the spark plug end of the Leak Down Testing hose assembly.

note: (a Schrader valve provision is not used anywhere in a Leak Down test rig)
It will quickly become a 12mm Compression Tester hose assembly, too, by simply installing a Schrader type valve stem core. Bonus! action1
Although it's difficult to see in the Motion Pro catalog picture, the air hose male adaptor fitting is already a permanent part of the hose assembly.
https://www.ridersdiscount.com/motion-p ... 2mm-172217
Readily plugs into my older Snap-On compression tester air coupler, my single gauge Kohler Engines cylinder leak down tester air coupler, and my shop air hose quick release couplers, too.

I will repeat......You really NEED one..... ;)
Cliff

Keep your eyes and ears open and you'll learn something new, everyday. tumb2

New users please visit our "Shop Talk" for common tips and help: <---jdvorchak
http://www.ngwclub.com/forum/page/ST
^^^^^^^click up here^^^^^ :oldies

RE: a thorough fuel tank cleaning
"And your carbs will thank you. They no longer live down stream from a sewage plant." -gregforesi tumb2
"Can't see the paint when your looking thru the handlebars..........." -Oldewing ;)
"I'd rather Ride than Shine" -RAT tumb2 Me Too!!

Cliff

'75 GL1000 home built trike; http://www.ngwclub.com/forum/viewtopic.php?f=30&t=39996
October,2017 BOTM :shock: https://nakedgoldwingsclub.com/forum/page/Welcome

previous rides:
1953 H-D Servi-car, naked, 1969-1978 (serial#53G1559 committed to memory!)
1980 CB900 Custom (triked) 1997-2003 .... R.I.P.
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GL1-242
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SUPER BIKER!!!!
Posts: 3991
Joined: Sun May 07, 2006 12:09 am
Location: Littleton, Colorado

Re: 84 Interstate

#22

Post by GL1-242 »

Sweet thanks for the link.

Paul
84 GL1200 STD
75 GL1000 #202
75 GL1000 (AKA, GL1-242)(AKA, Flipper)
76 LTD
76/77 CB750F
Bultaco's = 121, 152, 167, 188
User avatar
gltriker
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Joined: Fri Sep 24, 2010 9:11 pm
Location: Baldwinsville, NY (central NY)

Re: 84 Interstate

#23

Post by gltriker »

You are Welcome, Paul. tumb2

Although I haven't removed either cylinder head off my trike's engine , an occasional cylinder compression test and cylinder leak down test session is time well spent to keep an "eye " on my engine''s top end.
Cliff

Keep your eyes and ears open and you'll learn something new, everyday. tumb2

New users please visit our "Shop Talk" for common tips and help: <---jdvorchak
http://www.ngwclub.com/forum/page/ST
^^^^^^^click up here^^^^^ :oldies

RE: a thorough fuel tank cleaning
"And your carbs will thank you. They no longer live down stream from a sewage plant." -gregforesi tumb2
"Can't see the paint when your looking thru the handlebars..........." -Oldewing ;)
"I'd rather Ride than Shine" -RAT tumb2 Me Too!!

Cliff

'75 GL1000 home built trike; http://www.ngwclub.com/forum/viewtopic.php?f=30&t=39996
October,2017 BOTM :shock: https://nakedgoldwingsclub.com/forum/page/Welcome

previous rides:
1953 H-D Servi-car, naked, 1969-1978 (serial#53G1559 committed to memory!)
1980 CB900 Custom (triked) 1997-2003 .... R.I.P.
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