PorKens Cam Timing Tool Rocks
#1
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PorKens Cam Timing Tool Rocks
I just bought one of PorKen's cam timing tool and checked the cams on my '89 GT. The right side was retarded about 2.3 degrees and the left was advanced 4 degrees! That's a difference of 12.6 degrees of crank rotation between the two sides! While I realize unless I index the cams according to the WSM I don't exactly know where they're set I was amazed at the difference between them. BTW, I think he only has a few sets left. ****** them up while you can.
#2
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Agreed on how well Ken's cam timing indicator tool works.
I adjusted my cams with the factory tools and WSM method to factory spec-big PIA. Seemingly minute adjustments between the cam gear and cam make a large change on the dial indicator.
When I checked the readings on Ken's tool after the factory type adjustment procedure, it showed my passenger side was .5 degrees retarded, and the drivers side was 1 degree advanced. Those two numbers are now my baselines for those cams for matching the factory 0 degree setup and making any changes later on. Much easier than pulling the cam covers to make any changes later on.
Jim
I adjusted my cams with the factory tools and WSM method to factory spec-big PIA. Seemingly minute adjustments between the cam gear and cam make a large change on the dial indicator.
When I checked the readings on Ken's tool after the factory type adjustment procedure, it showed my passenger side was .5 degrees retarded, and the drivers side was 1 degree advanced. Those two numbers are now my baselines for those cams for matching the factory 0 degree setup and making any changes later on. Much easier than pulling the cam covers to make any changes later on.
Jim
#5
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Keith,
No before/after dyno or g-tech, but the car pulls harder since the adjustment. I was way off before adjustment-I think it was close to 5 degrees advanced on one bank and about 5 retarded on the other. Much harder pull now, and boost starts building earlier in the rev range. As for a NA car, don't know, but it has to help.
Jim
No before/after dyno or g-tech, but the car pulls harder since the adjustment. I was way off before adjustment-I think it was close to 5 degrees advanced on one bank and about 5 retarded on the other. Much harder pull now, and boost starts building earlier in the rev range. As for a NA car, don't know, but it has to help.
Jim
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#9
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I have the PorKen tool & adjustable timing conversion for the early cars... but I bought it right after changing the T-belt. When it's time for a t-belt I'll go with HTD parts and make it adjustable.
#10
Inventor
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Thanks y'all!
I have (2) 32V tools left, and (0) 16V conversions.
When I sell this last batch, I will have (in theory) come out even on the development costs.
I am still deciding whether to make any more. (I have to order at least 20 at a time from the laser cutter).
Here's the manual if you haven't seen it before: 32VCamSetup1_0.pdf (380Kb)
PM or email me for more details.
When I sell this last batch, I will have (in theory) come out even on the development costs.
I am still deciding whether to make any more. (I have to order at least 20 at a time from the laser cutter).
Here's the manual if you haven't seen it before: 32VCamSetup1_0.pdf (380Kb)
PM or email me for more details.
Last edited by PorKen; 12-13-2005 at 10:44 PM. Reason: 32V tool count
#12
Drifting
Originally Posted by cfc928gt
I just bought one of PorKen's cam timing tool and checked the cams on my '89 GT. The right side was retarded about 2.3 degrees and the left was advanced 4 degrees! That's a difference of 12.6 degrees of crank rotation between the two sides!
While I realize unless I index the cams according to the WSM I don't exactly know where they're set I was amazed at the difference between them.
While I realize unless I index the cams according to the WSM I don't exactly know where they're set I was amazed at the difference between them.
I thought the tool was only good for precisely relocating the cams from the WSM calibrated settings
borland
90' S4, Slate Metallic
#14
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So far, I've only heard of the cams measuring +-1 cam degree when set with a dial indicator. 4 cam/8 crank degrees would be unusual, I would hazard.
Originally Posted by borland
Without calibrating the PorKen tool using the WSM procedure, how can you tell the two sides differ in adjustment?
I thought the tool was only good for precisely relocating the cams from the WSM calibrated settings
I thought the tool was only good for precisely relocating the cams from the WSM calibrated settings
#15
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Thread Starter
Mine were off over 6 cam degrees, over 12.5 crank degrees, from each other. In reviewing my PO workorders I noticed at the last TB change that the mechanic had 'advanced cams 5 degrees for more HP'. But I don't see anything that shows the cam covers were removed to properly determine the advance and I haven't the faintest idea how he could have determined what 5 degrees advanced would have been. Thus I've always suspected the cams were out of sync, PorKen's tool confirmed it. Someday when I haven't anything better to do I'll index the cams, but until then I know I'm closer to spec than I was before thanks to Ken's awesome tool. Word to the wise, get one while you still can...