Valve Spring Replacement (910 Upgrade)
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Lead Driver
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From: Damon (South East Texas)
Valve Spring Replacement (910 Upgrade)
Here's a link to the write up, produced by Mark (Tailgate77478), of our Comp Cams 910 valve spring and valve seal replacement procedure. https://skydrive.live.com/P.mvc#!/vi...nsChanged=1&1=
I hope the link works.
I did modify the tool slightly after trying it on the first spring and will be tweaking it a little more before it does its next set of springs.
Thanks again
to Mark for the fine job and his & Frank's help with this project.
I hope the link works.
I did modify the tool slightly after trying it on the first spring and will be tweaking it a little more before it does its next set of springs.
Thanks again
to Mark for the fine job and his & Frank's help with this project.
Last edited by mueckster; Jul 11, 2011 at 10:14 PM. Reason: new version of write up
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Lead Driver
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From: Damon (South East Texas)
The tool is already being mass produced......to the tune of over $400. 
Ford Motorcraft 303-483 Valve Spring Compressor
That's why I built my own, using the head/valve spring measurements provided to me by Cory (Ziggy). Thanks, Cory!
The only thing I didn't factor in was the drop of the valve until it contacts the top of the piston. I didn't have that spec. I had to chop off some of the bottom of the tool to allow for more compression of the spring. This in turn causes a need to shorten the pipe that compresses it. I didn't shorten the pipe yet. It works okay like it is, but would be even better on the tigher spots once the changes are made. Overall height would then be shorter. I'll modify the the prototype and then build another to the new specs when more time allows.
Ford Motorcraft 303-483 Valve Spring CompressorThat's why I built my own, using the head/valve spring measurements provided to me by Cory (Ziggy). Thanks, Cory!
The only thing I didn't factor in was the drop of the valve until it contacts the top of the piston. I didn't have that spec. I had to chop off some of the bottom of the tool to allow for more compression of the spring. This in turn causes a need to shorten the pipe that compresses it. I didn't shorten the pipe yet. It works okay like it is, but would be even better on the tigher spots once the changes are made. Overall height would then be shorter. I'll modify the the prototype and then build another to the new specs when more time allows.
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Lead Driver
Joined: Jun 2003
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From: Damon (South East Texas)
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4000 rounds a min
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From: Albemarle NC
The valve only drops about 1/8'' or so (didn't measure the actual dimension). Most, who have done the valve spring replacement, do it this way. The drop has the advantage of shortening the overall length of the tool for better clearance on the driver's side rear valve and those by the a/c evaporator case on the passenger side.
Attachment 38569
Attachment 38569
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Lead Driver
Joined: Jun 2003
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From: Damon (South East Texas)
Post Valve Spring Replacement Impressions
Last night while revving my truck in park, I noticed that the engine seemed much smoother. Before, I had a bit of a surge while trying to hold it above 2000 rpms. Now, it was holding steady. I'm not sure if maybe I had some weak springs, or it was the fact that the 42 pin connnector had been disconnected & reconnected and was making better contact. There is definitely an improvement in the way it runs from idle on up through the rpm range. After driving to work today, I can say that I "feel" a difference as well and that it was well worth the time to do this project. 
I didn't get a chance to check the compression before or after the spring install. I need some fittings to adapt my compression tester for it to clear the rocker arm and injector at the glow plug hole and could not use it at this time. 
I didn't get a chance to check the compression before or after the spring install. I need some fittings to adapt my compression tester for it to clear the rocker arm and injector at the glow plug hole and could not use it at this time.
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Lead Driver
Joined: Jun 2003
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From: Damon (South East Texas)
I am going to try to find the time to revise my prototype McTool and also build an extra one, if time permits, before RRE. 
Cargo Master
Joined: Apr 2009
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From: Man Cave
little HJ here. but will this bugga work with our springs ????
Universal Overhead Valve Spring Compressor KDT2078 (eBay item 350135351087 end time 22-Jul-11 07:59:25 AEST) : eBay Motors
Universal Overhead Valve Spring Compressor KDT2078 (eBay item 350135351087 end time 22-Jul-11 07:59:25 AEST) : eBay Motors
Thread Starter
|
Lead Driver
Joined: Jun 2003
Posts: 8,298
Likes: 24
From: Damon (South East Texas)
little HJ here. but will this bugga work with our springs ????
Universal Overhead Valve Spring Compressor KDT2078 (eBay item 350135351087 end time 22-Jul-11 07:59:25 AEST) : eBay Motors
Universal Overhead Valve Spring Compressor KDT2078 (eBay item 350135351087 end time 22-Jul-11 07:59:25 AEST) : eBay Motors
Last edited by mueckster; Jul 11, 2011 at 10:51 PM. Reason: link to Chris' thread