How's this grab you? Elective surgery. - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 23 (permalink) Old 03-19-2014, 07:29 AM Thread Starter
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How's this grab you? Elective surgery.

I removed my upper Timing chain tensioner springs today and stretched them about a quarter of an inch longer. My reasoning being after 28 years of heat and compressive forces, they are likely to be a bit sagged, like an old actresses Tits.
So I can't see any harm in a little elective surgery, apparently valve springs can also get sagged and cause little flutters and spits through the pipes at idle. So if you have your heads off at any stage, have them checked or replaced,nothing lasts for ever.

Who walks into the Lions Den, and comes out alive?
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12 inch apes
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Replaced CDI
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post #2 of 23 (permalink) Old 03-19-2014, 07:34 AM
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Let us know how that works for you.

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post #3 of 23 (permalink) Old 03-19-2014, 09:49 PM
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Yer talkin about that single big spring, right ?...Ive often wondered if the ACCTs would last longer with that one replaced or modded...



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post #4 of 23 (permalink) Old 03-20-2014, 12:14 AM
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I stacked washers under mine and noticed no change.

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post #5 of 23 (permalink) Old 03-20-2014, 04:29 AM Thread Starter
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Top single springs.

These are the ones I stretched, though I had to change out the front one for a spare as it was a little deformed on the business end.
Might help, can't hurt I don't think.
I also got some VN 1500 Timing chain adjusters,I'm thinking of shimming them out and fitting them. A 10 mm shim will still allow them to penetrate 9 mm deeper than stock, and have the advantage of their trick double locking system.
I have attached a picture of the two ACCT side by side, the 1500 models have a secondary locking mechanism, that uses the principles, of a Chinese finger stall.
The primary locking system uses a spring loaded pall, that meshes on the fine jaws machined into the tensioning shaft. Looks real stout to me.
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Who walks into the Lions Den, and comes out alive?
The Lion!
12 inch apes
1986 A3 series 750
Slash cut stainless mufflers
170 rear tyre
Custom cyane blue paint, wheels included
Relocated regulator rectifier
Solo mod
Stainless washable oil filter
Six pack rack
LED indicators and flasher unit.
Replaced CDI
Coasters
Penrite 10/50
Oil pressure hot at 1000 rpm 20 psi, 4000 rpm 60 psi
Shows 67000 kms
Jets 38 idle Mains 120 changed to 40 idle 135 main.
Big Nick is offline  
post #6 of 23 (permalink) Old 03-20-2014, 10:09 AM
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Quote:
Originally Posted by Big Nick View Post
These are the ones I stretched, though I had to change out the front one for a spare as it was a little deformed on the business end.
Might help, can't hurt I don't think.
I also got some VN 1500 Timing chain adjusters,I'm thinking of shimming them out and fitting them. A 10 mm shim will still allow them to penetrate 9 mm deeper than stock, and have the advantage of their trick double locking system.
I have attached a picture of the two ACCT side by side, the 1500 models have a secondary locking mechanism, that uses the principles, of a Chinese finger stall.
The primary locking system uses a spring loaded pall, that meshes on the fine jaws machined into the tensioning shaft. Looks real stout to me.
I would like you to further investigate. Is the bolt pattern the same?
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post #7 of 23 (permalink) Old 03-20-2014, 11:18 AM Thread Starter
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The bolt pattern is the same, by measure of the distance between the two mounting holes, on each model, though now I think of it there may be a hurdle removing the securing studs in the 750 to either use longer bolts, or fit longer studs to accommodate the later model tensioners and spacing blocks. I'll consider that at length.

Who walks into the Lions Den, and comes out alive?
The Lion!
12 inch apes
1986 A3 series 750
Slash cut stainless mufflers
170 rear tyre
Custom cyane blue paint, wheels included
Relocated regulator rectifier
Solo mod
Stainless washable oil filter
Six pack rack
LED indicators and flasher unit.
Replaced CDI
Coasters
Penrite 10/50
Oil pressure hot at 1000 rpm 20 psi, 4000 rpm 60 psi
Shows 67000 kms
Jets 38 idle Mains 120 changed to 40 idle 135 main.
Big Nick is offline  
post #8 of 23 (permalink) Old 03-20-2014, 12:16 PM
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Bore diameter?
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post #9 of 23 (permalink) Old 03-20-2014, 09:30 PM Thread Starter
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Bore.

The shaft diameter,is very close, at the hilt on the 1500 it's 22 mm, the 750 at the hilt is 21 mm. In the photo's you can see the 1500 tensioner goes in as far as required, allowing for a spacer.
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Who walks into the Lions Den, and comes out alive?
The Lion!
12 inch apes
1986 A3 series 750
Slash cut stainless mufflers
170 rear tyre
Custom cyane blue paint, wheels included
Relocated regulator rectifier
Solo mod
Stainless washable oil filter
Six pack rack
LED indicators and flasher unit.
Replaced CDI
Coasters
Penrite 10/50
Oil pressure hot at 1000 rpm 20 psi, 4000 rpm 60 psi
Shows 67000 kms
Jets 38 idle Mains 120 changed to 40 idle 135 main.
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post #10 of 23 (permalink) Old 03-20-2014, 10:30 PM
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I figured you meant those other springs....

But hay...leave it to a bloke who's technically upside down to delve into it....I thought for sure a New Zealander would mess with it first....

(A very good female friend lives in Rotorua, North Island)...just bustin yer chops brother...



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